./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i -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 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 23:49:42,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:49:42,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:49:42,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:49:42,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:49:42,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:49:42,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:49:42,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:49:42,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:49:42,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:49:42,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:49:42,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:49:42,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:49:42,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:49:42,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:49:42,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:49:42,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:49:42,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:49:42,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:49:42,381 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:49:42,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:49:42,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:49:42,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:49:42,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:49:42,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:49:42,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:49:42,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:49:42,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:49:42,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:49:42,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:49:42,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:49:42,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:49:42,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:49:42,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:49:42,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:49:42,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:49:42,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:49:42,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:49:42,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:49:42,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:49:42,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:49:42,417 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:49:42,441 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:49:42,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:49:42,442 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:49:42,442 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:49:42,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:49:42,443 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:49:42,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:49:42,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:49:42,444 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:49:42,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:49:42,445 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:49:42,445 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:49:42,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:49:42,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:49:42,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:49:42,446 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:49:42,446 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:49:42,446 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:49:42,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:49:42,446 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:49:42,447 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:49:42,447 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:49:42,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:49:42,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:49:42,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:49:42,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:49:42,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:49:42,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:49:42,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:49:42,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:49:42,448 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:49:42,448 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:49:42,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:49:42,449 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:49:42,449 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:49:42,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:49:42,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:49:42,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:49:42,710 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:49:42,710 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:49:42,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i [2023-08-31 23:49:43,685 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:49:43,872 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:49:43,873 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i [2023-08-31 23:49:43,889 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2b320ad3/13eb01f6807f46ff91ad7b5f5cdd3245/FLAG8ad72ab17 [2023-08-31 23:49:43,901 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2b320ad3/13eb01f6807f46ff91ad7b5f5cdd3245 [2023-08-31 23:49:43,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:49:43,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:49:43,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:49:43,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:49:43,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:49:43,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:49:43" (1/1) ... [2023-08-31 23:49:43,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21ca5f7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:49:43, skipping insertion in model container [2023-08-31 23:49:43,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:49:43" (1/1) ... [2023-08-31 23:49:43,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:49:43,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:49:44,043 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-31 23:49:44,316 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i[75009,75022] [2023-08-31 23:49:44,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:49:44,358 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) [2023-08-31 23:49:44,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@32c23ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:49:44, skipping insertion in model container [2023-08-31 23:49:44,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:49:44,359 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-31 23:49:44,360 INFO L158 Benchmark]: Toolchain (without parser) took 456.42ms. Allocated memory was 67.1MB in the beginning and 94.4MB in the end (delta: 27.3MB). Free memory was 36.6MB in the beginning and 66.2MB in the end (delta: -29.6MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2023-08-31 23:49:44,361 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 67.1MB. Free memory is still 45.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:49:44,362 INFO L158 Benchmark]: CACSL2BoogieTranslator took 453.10ms. Allocated memory was 67.1MB in the beginning and 94.4MB in the end (delta: 27.3MB). Free memory was 36.4MB in the beginning and 66.2MB in the end (delta: -29.8MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2023-08-31 23:49:44,363 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 67.1MB. Free memory is still 45.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 453.10ms. Allocated memory was 67.1MB in the beginning and 94.4MB in the end (delta: 27.3MB). Free memory was 36.4MB in the beginning and 66.2MB in the end (delta: -29.8MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1691]: 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/ldv-races/race-3_2-container_of-global.i -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 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 23:49:45,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:49:45,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:49:45,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:49:45,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:49:45,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:49:45,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:49:45,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:49:45,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:49:45,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:49:45,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:49:45,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:49:45,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:49:45,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:49:45,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:49:45,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:49:45,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:49:45,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:49:45,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:49:45,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:49:45,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:49:45,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:49:45,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:49:45,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:49:45,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:49:45,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:49:45,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:49:45,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:49:45,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:49:45,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:49:45,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:49:45,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:49:45,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:49:45,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:49:45,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:49:45,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:49:45,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:49:45,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:49:45,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:49:45,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:49:45,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:49:45,627 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-31 23:49:45,643 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:49:45,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:49:45,643 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:49:45,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:49:45,644 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:49:45,644 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:49:45,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:49:45,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:49:45,645 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:49:45,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:49:45,645 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:49:45,645 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:49:45,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:49:45,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:49:45,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:49:45,646 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:49:45,646 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:49:45,646 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:49:45,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:49:45,646 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:49:45,646 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-31 23:49:45,646 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-31 23:49:45,646 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:49:45,647 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:49:45,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:49:45,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:49:45,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:49:45,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:49:45,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:49:45,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:49:45,648 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-31 23:49:45,648 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-31 23:49:45,648 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:49:45,648 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:49:45,648 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:49:45,648 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-31 23:49:45,648 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:49:45,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:49:45,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:49:45,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:49:45,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:49:45,894 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:49:45,894 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:49:45,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i [2023-08-31 23:49:46,785 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:49:47,026 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:49:47,026 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i [2023-08-31 23:49:47,043 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b70ceb42d/8301eeebb22340ba976e94c96a7a0fdf/FLAG8b44d4914 [2023-08-31 23:49:47,054 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b70ceb42d/8301eeebb22340ba976e94c96a7a0fdf [2023-08-31 23:49:47,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:49:47,057 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:49:47,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:49:47,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:49:47,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:49:47,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:49:47" (1/1) ... [2023-08-31 23:49:47,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@622d9385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:49:47, skipping insertion in model container [2023-08-31 23:49:47,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:49:47" (1/1) ... [2023-08-31 23:49:47,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:49:47,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:49:47,246 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-31 23:49:47,532 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i[75009,75022] [2023-08-31 23:49:47,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:49:47,583 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-31 23:49:47,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:49:47,597 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-31 23:49:47,627 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i[75009,75022] [2023-08-31 23:49:47,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:49:47,644 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:49:47,650 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-31 23:49:47,671 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i[75009,75022] [2023-08-31 23:49:47,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:49:47,758 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:49:47,759 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:49:47,759 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:49:47,764 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:49:47,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:49:47 WrapperNode [2023-08-31 23:49:47,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:49:47,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:49:47,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:49:47,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:49:47,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:49:47" (1/1) ... [2023-08-31 23:49:47,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:49:47" (1/1) ... [2023-08-31 23:49:47,806 INFO L138 Inliner]: procedures = 472, calls = 52, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 133 [2023-08-31 23:49:47,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:49:47,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:49:47,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:49:47,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:49:47,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:49:47" (1/1) ... [2023-08-31 23:49:47,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:49:47" (1/1) ... [2023-08-31 23:49:47,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:49:47" (1/1) ... [2023-08-31 23:49:47,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:49:47" (1/1) ... [2023-08-31 23:49:47,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:49:47" (1/1) ... [2023-08-31 23:49:47,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:49:47" (1/1) ... [2023-08-31 23:49:47,832 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:49:47" (1/1) ... [2023-08-31 23:49:47,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:49:47" (1/1) ... [2023-08-31 23:49:47,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:49:47,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:49:47,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:49:47,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:49:47,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:49:47" (1/1) ... [2023-08-31 23:49:47,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:49:47,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:49:47,864 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) [2023-08-31 23:49:47,865 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 [2023-08-31 23:49:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:49:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:49:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-31 23:49:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-31 23:49:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:49:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:49:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-31 23:49:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:49:47,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:49:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-31 23:49:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-31 23:49:47,887 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-31 23:49:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:49:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-31 23:49:47,888 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 23:49:48,144 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:49:48,146 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:49:48,545 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:49:48,564 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:49:48,566 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:49:48,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:49:48 BoogieIcfgContainer [2023-08-31 23:49:48,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:49:48,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:49:48,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:49:48,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:49:48,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:49:47" (1/3) ... [2023-08-31 23:49:48,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ea2816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:49:48, skipping insertion in model container [2023-08-31 23:49:48,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:49:47" (2/3) ... [2023-08-31 23:49:48,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ea2816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:49:48, skipping insertion in model container [2023-08-31 23:49:48,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:49:48" (3/3) ... [2023-08-31 23:49:48,573 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2023-08-31 23:49:48,584 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:49:48,584 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2023-08-31 23:49:48,584 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:49:48,660 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 23:49:48,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 212 transitions, 440 flow [2023-08-31 23:49:48,764 INFO L130 PetriNetUnfolder]: 10/262 cut-off events. [2023-08-31 23:49:48,764 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 23:49:48,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 262 events. 10/262 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 623 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 151. Up to 4 conditions per place. [2023-08-31 23:49:48,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 212 transitions, 440 flow [2023-08-31 23:49:48,778 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 210 transitions, 432 flow [2023-08-31 23:49:48,780 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:49:48,789 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 208 places, 210 transitions, 432 flow [2023-08-31 23:49:48,791 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 208 places, 210 transitions, 432 flow [2023-08-31 23:49:48,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 210 transitions, 432 flow [2023-08-31 23:49:48,832 INFO L130 PetriNetUnfolder]: 10/262 cut-off events. [2023-08-31 23:49:48,832 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 23:49:48,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 262 events. 10/262 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 622 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 151. Up to 4 conditions per place. [2023-08-31 23:49:48,836 INFO L119 LiptonReduction]: Number of co-enabled transitions 4260 [2023-08-31 23:51:01,159 WARN L222 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 164 DAG size of output: 143 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:51:14,026 WARN L222 SmtUtils]: Spent 9.65s on a formula simplification. DAG size of input: 170 DAG size of output: 149 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:51:20,883 WARN L222 SmtUtils]: Spent 6.86s on a formula simplification that was a NOOP. DAG size: 149 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:51:27,568 WARN L222 SmtUtils]: Spent 6.68s on a formula simplification. DAG size of input: 178 DAG size of output: 157 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:51:37,315 WARN L222 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 184 DAG size of output: 163 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:51:55,031 WARN L222 SmtUtils]: Spent 8.19s on a formula simplification. DAG size of input: 179 DAG size of output: 158 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:52:48,900 WARN L222 SmtUtils]: Spent 50.01s on a formula simplification. DAG size of input: 221 DAG size of output: 200 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:53:11,208 WARN L222 SmtUtils]: Spent 22.31s on a formula simplification that was a NOOP. DAG size: 193 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:54:14,082 WARN L222 SmtUtils]: Spent 1.05m on a formula simplification. DAG size of input: 227 DAG size of output: 206 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:54:38,104 WARN L222 SmtUtils]: Spent 24.02s on a formula simplification that was a NOOP. DAG size: 199 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:54:49,978 WARN L222 SmtUtils]: Spent 11.85s on a formula simplification that was a NOOP. DAG size: 224 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:55:02,342 WARN L222 SmtUtils]: Spent 12.36s on a formula simplification that was a NOOP. DAG size: 224 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:55:13,041 WARN L222 SmtUtils]: Spent 10.70s on a formula simplification that was a NOOP. DAG size: 230 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:55:23,445 WARN L222 SmtUtils]: Spent 10.40s on a formula simplification that was a NOOP. DAG size: 230 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:56:58,493 WARN L222 SmtUtils]: Spent 1.58m on a formula simplification. DAG size of input: 266 DAG size of output: 259 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:57:44,867 WARN L222 SmtUtils]: Spent 46.37s on a formula simplification that was a NOOP. DAG size: 251 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:59:25,438 WARN L222 SmtUtils]: Spent 1.68m on a formula simplification. DAG size of input: 272 DAG size of output: 265 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:00:17,560 WARN L222 SmtUtils]: Spent 52.12s on a formula simplification that was a NOOP. DAG size: 257 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:00:17,647 INFO L134 LiptonReduction]: Checked pairs total: 17410 [2023-09-01 00:00:17,647 INFO L136 LiptonReduction]: Total number of compositions: 266 [2023-09-01 00:00:17,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 00:00:17,660 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;@3a8f564b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:00:17,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-09-01 00:00:17,661 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 00:00:17,661 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:00:17,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:17,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 00:00:17,662 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:00:17,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:17,665 INFO L85 PathProgramCache]: Analyzing trace with hash 762, now seen corresponding path program 1 times [2023-09-01 00:00:17,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:17,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402277045] [2023-09-01 00:00:17,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:00:17,674 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:17,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:17,677 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:00:17,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-09-01 00:00:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:00:17,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-09-01 00:00:17,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:17,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:17,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:17,799 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:17,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402277045] [2023-09-01 00:00:17,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402277045] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:17,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:17,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 00:00:17,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955865502] [2023-09-01 00:00:17,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:17,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 00:00:17,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:17,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 00:00:17,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 00:00:17,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 478 [2023-09-01 00:00:17,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 172 flow. Second operand has 2 states, 2 states have (on average 194.5) internal successors, (389), 2 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:17,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:17,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 478 [2023-09-01 00:00:17,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:00:19,233 INFO L130 PetriNetUnfolder]: 1026/2094 cut-off events. [2023-09-01 00:00:19,233 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-09-01 00:00:19,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3828 conditions, 2094 events. 1026/2094 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 14318 event pairs, 1025 based on Foata normal form. 0/1179 useless extension candidates. Maximal degree in co-relation 3652. Up to 1710 conditions per place. [2023-09-01 00:00:19,247 INFO L137 encePairwiseOnDemand]: 460/478 looper letters, 44 selfloop transitions, 0 changer transitions 0/62 dead transitions. [2023-09-01 00:00:19,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 62 transitions, 224 flow [2023-09-01 00:00:19,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 00:00:19,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 00:00:19,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 450 transitions. [2023-09-01 00:00:19,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4707112970711297 [2023-09-01 00:00:19,270 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 450 transitions. [2023-09-01 00:00:19,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 450 transitions. [2023-09-01 00:00:19,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:00:19,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 450 transitions. [2023-09-01 00:00:19,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 225.0) internal successors, (450), 2 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:19,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 478.0) internal successors, (1434), 3 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:19,281 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 478.0) internal successors, (1434), 3 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:19,282 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 172 flow. Second operand 2 states and 450 transitions. [2023-09-01 00:00:19,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 62 transitions, 224 flow [2023-09-01 00:00:19,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 216 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 00:00:19,287 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 128 flow [2023-09-01 00:00:19,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=128, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2023-09-01 00:00:19,291 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -18 predicate places. [2023-09-01 00:00:19,291 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 128 flow [2023-09-01 00:00:19,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 194.5) internal successors, (389), 2 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:19,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:19,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 00:00:19,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-09-01 00:00:19,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:19,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:00:19,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:19,501 INFO L85 PathProgramCache]: Analyzing trace with hash 24758, now seen corresponding path program 1 times [2023-09-01 00:00:19,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:19,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051174703] [2023-09-01 00:00:19,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:00:19,502 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:19,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:19,503 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:00:19,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-09-01 00:00:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:00:19,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 00:00:19,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:19,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:19,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:19,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:19,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051174703] [2023-09-01 00:00:19,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051174703] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:19,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:19,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:00:19,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125492787] [2023-09-01 00:00:19,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:19,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:00:19,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:19,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:00:19,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:00:19,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 478 [2023-09-01 00:00:19,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:19,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:19,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 478 [2023-09-01 00:00:19,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:00:21,657 INFO L130 PetriNetUnfolder]: 1026/2054 cut-off events. [2023-09-01 00:00:21,657 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 00:00:21,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3770 conditions, 2054 events. 1026/2054 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 13689 event pairs, 1025 based on Foata normal form. 0/1178 useless extension candidates. Maximal degree in co-relation 3767. Up to 1706 conditions per place. [2023-09-01 00:00:21,667 INFO L137 encePairwiseOnDemand]: 473/478 looper letters, 43 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-09-01 00:00:21,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 220 flow [2023-09-01 00:00:21,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:00:21,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:00:21,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 621 transitions. [2023-09-01 00:00:21,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4330543933054393 [2023-09-01 00:00:21,671 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 621 transitions. [2023-09-01 00:00:21,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 621 transitions. [2023-09-01 00:00:21,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:00:21,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 621 transitions. [2023-09-01 00:00:21,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:21,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:21,676 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:21,676 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 128 flow. Second operand 3 states and 621 transitions. [2023-09-01 00:00:21,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 220 flow [2023-09-01 00:00:21,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 63 transitions, 220 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 00:00:21,678 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 144 flow [2023-09-01 00:00:21,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2023-09-01 00:00:21,679 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -15 predicate places. [2023-09-01 00:00:21,679 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 144 flow [2023-09-01 00:00:21,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:21,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:21,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 00:00:21,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-09-01 00:00:21,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:21,885 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:00:21,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:21,886 INFO L85 PathProgramCache]: Analyzing trace with hash 764167, now seen corresponding path program 1 times [2023-09-01 00:00:21,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:21,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331129057] [2023-09-01 00:00:21,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:00:21,887 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:21,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:21,890 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:00:21,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-09-01 00:00:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:00:22,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 00:00:22,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:22,099 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-09-01 00:00:22,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-09-01 00:00:22,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:22,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:22,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:22,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331129057] [2023-09-01 00:00:22,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331129057] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:22,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:22,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:00:22,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689280233] [2023-09-01 00:00:22,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:22,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:00:22,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:22,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:00:22,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:00:22,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 478 [2023-09-01 00:00:22,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:22,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:22,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 478 [2023-09-01 00:00:22,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:00:23,604 INFO L130 PetriNetUnfolder]: 1016/2041 cut-off events. [2023-09-01 00:00:23,604 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2023-09-01 00:00:23,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3894 conditions, 2041 events. 1016/2041 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 13550 event pairs, 895 based on Foata normal form. 0/1178 useless extension candidates. Maximal degree in co-relation 3889. Up to 1484 conditions per place. [2023-09-01 00:00:23,612 INFO L137 encePairwiseOnDemand]: 467/478 looper letters, 54 selfloop transitions, 9 changer transitions 0/81 dead transitions. [2023-09-01 00:00:23,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 306 flow [2023-09-01 00:00:23,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:00:23,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:00:23,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 634 transitions. [2023-09-01 00:00:23,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421199442119944 [2023-09-01 00:00:23,618 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 634 transitions. [2023-09-01 00:00:23,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 634 transitions. [2023-09-01 00:00:23,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:00:23,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 634 transitions. [2023-09-01 00:00:23,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:23,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:23,623 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:23,623 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 144 flow. Second operand 3 states and 634 transitions. [2023-09-01 00:00:23,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 306 flow [2023-09-01 00:00:23,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 304 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:00:23,626 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 169 flow [2023-09-01 00:00:23,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2023-09-01 00:00:23,627 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -15 predicate places. [2023-09-01 00:00:23,627 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 169 flow [2023-09-01 00:00:23,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:23,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:23,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 00:00:23,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-09-01 00:00:23,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:23,834 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:00:23,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:23,835 INFO L85 PathProgramCache]: Analyzing trace with hash 764168, now seen corresponding path program 1 times [2023-09-01 00:00:23,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:23,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39017577] [2023-09-01 00:00:23,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:00:23,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:23,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:23,838 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:00:23,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-09-01 00:00:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:00:23,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 00:00:23,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:24,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:00:24,016 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 [2023-09-01 00:00:24,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:24,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:24,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:24,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39017577] [2023-09-01 00:00:24,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39017577] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:24,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:24,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:00:24,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532252687] [2023-09-01 00:00:24,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:24,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:00:24,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:24,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:00:24,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:00:24,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 478 [2023-09-01 00:00:24,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:24,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:24,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 478 [2023-09-01 00:00:24,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:00:25,422 INFO L130 PetriNetUnfolder]: 1006/2015 cut-off events. [2023-09-01 00:00:25,423 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-09-01 00:00:25,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3935 conditions, 2015 events. 1006/2015 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 13339 event pairs, 1005 based on Foata normal form. 0/1170 useless extension candidates. Maximal degree in co-relation 3929. Up to 1672 conditions per place. [2023-09-01 00:00:25,431 INFO L137 encePairwiseOnDemand]: 474/478 looper letters, 40 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-09-01 00:00:25,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 60 transitions, 249 flow [2023-09-01 00:00:25,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:00:25,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:00:25,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 615 transitions. [2023-09-01 00:00:25,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42887029288702927 [2023-09-01 00:00:25,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 615 transitions. [2023-09-01 00:00:25,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 615 transitions. [2023-09-01 00:00:25,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:00:25,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 615 transitions. [2023-09-01 00:00:25,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:25,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:25,438 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:25,438 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 169 flow. Second operand 3 states and 615 transitions. [2023-09-01 00:00:25,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 60 transitions, 249 flow [2023-09-01 00:00:25,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:00:25,440 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 160 flow [2023-09-01 00:00:25,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2023-09-01 00:00:25,441 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -16 predicate places. [2023-09-01 00:00:25,441 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 160 flow [2023-09-01 00:00:25,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:25,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:25,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 00:00:25,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-09-01 00:00:25,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:25,652 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:00:25,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:25,653 INFO L85 PathProgramCache]: Analyzing trace with hash 764184, now seen corresponding path program 1 times [2023-09-01 00:00:25,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:25,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122063986] [2023-09-01 00:00:25,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:00:25,653 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:25,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:25,654 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:00:25,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-09-01 00:00:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:00:25,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 00:00:25,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:25,766 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 [2023-09-01 00:00:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:25,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:25,772 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:25,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122063986] [2023-09-01 00:00:25,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122063986] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:25,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:25,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:00:25,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69134832] [2023-09-01 00:00:25,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:25,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:00:25,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:25,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:00:25,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:00:25,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 478 [2023-09-01 00:00:25,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:25,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:25,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 478 [2023-09-01 00:00:25,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:00:27,363 INFO L130 PetriNetUnfolder]: 747/1578 cut-off events. [2023-09-01 00:00:27,363 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-09-01 00:00:27,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3027 conditions, 1578 events. 747/1578 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 9963 event pairs, 635 based on Foata normal form. 0/1042 useless extension candidates. Maximal degree in co-relation 3021. Up to 1112 conditions per place. [2023-09-01 00:00:27,374 INFO L137 encePairwiseOnDemand]: 466/478 looper letters, 51 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2023-09-01 00:00:27,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 79 transitions, 322 flow [2023-09-01 00:00:27,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:00:27,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:00:27,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 632 transitions. [2023-09-01 00:00:27,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407252440725244 [2023-09-01 00:00:27,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 632 transitions. [2023-09-01 00:00:27,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 632 transitions. [2023-09-01 00:00:27,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:00:27,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 632 transitions. [2023-09-01 00:00:27,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:27,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:27,384 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:27,384 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 160 flow. Second operand 3 states and 632 transitions. [2023-09-01 00:00:27,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 79 transitions, 322 flow [2023-09-01 00:00:27,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 79 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:00:27,389 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 216 flow [2023-09-01 00:00:27,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2023-09-01 00:00:27,391 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -13 predicate places. [2023-09-01 00:00:27,391 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 216 flow [2023-09-01 00:00:27,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:27,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:27,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 00:00:27,405 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 [2023-09-01 00:00:27,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:27,601 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:00:27,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:27,601 INFO L85 PathProgramCache]: Analyzing trace with hash 765980, now seen corresponding path program 1 times [2023-09-01 00:00:27,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:27,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693314147] [2023-09-01 00:00:27,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:00:27,602 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:27,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:27,603 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:00:27,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-09-01 00:00:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:00:27,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 00:00:27,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:27,709 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 [2023-09-01 00:00:27,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:27,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:27,721 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:27,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693314147] [2023-09-01 00:00:27,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693314147] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:27,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:27,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:00:27,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476292444] [2023-09-01 00:00:27,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:27,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:00:27,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:27,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:00:27,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:00:27,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 478 [2023-09-01 00:00:27,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:27,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:27,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 478 [2023-09-01 00:00:27,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:00:28,772 INFO L130 PetriNetUnfolder]: 627/1391 cut-off events. [2023-09-01 00:00:28,772 INFO L131 PetriNetUnfolder]: For 306/306 co-relation queries the response was YES. [2023-09-01 00:00:28,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2917 conditions, 1391 events. 627/1391 cut-off events. For 306/306 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9146 event pairs, 384 based on Foata normal form. 26/1153 useless extension candidates. Maximal degree in co-relation 2910. Up to 588 conditions per place. [2023-09-01 00:00:28,778 INFO L137 encePairwiseOnDemand]: 468/478 looper letters, 53 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2023-09-01 00:00:28,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 77 transitions, 368 flow [2023-09-01 00:00:28,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:00:28,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:00:28,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 612 transitions. [2023-09-01 00:00:28,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42677824267782427 [2023-09-01 00:00:28,781 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 612 transitions. [2023-09-01 00:00:28,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 612 transitions. [2023-09-01 00:00:28,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:00:28,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 612 transitions. [2023-09-01 00:00:28,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:28,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:28,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:28,786 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 216 flow. Second operand 3 states and 612 transitions. [2023-09-01 00:00:28,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 77 transitions, 368 flow [2023-09-01 00:00:28,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 77 transitions, 348 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:00:28,790 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 225 flow [2023-09-01 00:00:28,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2023-09-01 00:00:28,792 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2023-09-01 00:00:28,792 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 225 flow [2023-09-01 00:00:28,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:28,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:28,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 00:00:28,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-09-01 00:00:28,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:28,998 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:00:28,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:28,999 INFO L85 PathProgramCache]: Analyzing trace with hash 765979, now seen corresponding path program 1 times [2023-09-01 00:00:28,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:28,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819950613] [2023-09-01 00:00:28,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:00:28,999 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:28,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:29,000 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:00:29,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-09-01 00:00:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:00:29,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 00:00:29,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:29,117 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 [2023-09-01 00:00:29,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:29,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:29,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:29,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819950613] [2023-09-01 00:00:29,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819950613] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:29,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:29,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:00:29,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999291072] [2023-09-01 00:00:29,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:29,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:00:29,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:29,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:00:29,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:00:29,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 478 [2023-09-01 00:00:29,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:29,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:29,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 478 [2023-09-01 00:00:29,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:00:30,406 INFO L130 PetriNetUnfolder]: 627/1375 cut-off events. [2023-09-01 00:00:30,406 INFO L131 PetriNetUnfolder]: For 339/339 co-relation queries the response was YES. [2023-09-01 00:00:30,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3053 conditions, 1375 events. 627/1375 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8776 event pairs, 512 based on Foata normal form. 0/1126 useless extension candidates. Maximal degree in co-relation 3045. Up to 815 conditions per place. [2023-09-01 00:00:30,411 INFO L137 encePairwiseOnDemand]: 471/478 looper letters, 46 selfloop transitions, 7 changer transitions 0/69 dead transitions. [2023-09-01 00:00:30,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 347 flow [2023-09-01 00:00:30,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:00:30,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:00:30,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 581 transitions. [2023-09-01 00:00:30,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405160390516039 [2023-09-01 00:00:30,415 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 581 transitions. [2023-09-01 00:00:30,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 581 transitions. [2023-09-01 00:00:30,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:00:30,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 581 transitions. [2023-09-01 00:00:30,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:30,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:30,419 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:30,419 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 225 flow. Second operand 3 states and 581 transitions. [2023-09-01 00:00:30,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 347 flow [2023-09-01 00:00:30,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 69 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:00:30,424 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 218 flow [2023-09-01 00:00:30,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2023-09-01 00:00:30,424 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -14 predicate places. [2023-09-01 00:00:30,424 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 218 flow [2023-09-01 00:00:30,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:30,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:30,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 00:00:30,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-09-01 00:00:30,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:30,637 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:00:30,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:30,637 INFO L85 PathProgramCache]: Analyzing trace with hash 764185, now seen corresponding path program 1 times [2023-09-01 00:00:30,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:30,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212792480] [2023-09-01 00:00:30,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:00:30,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:30,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:30,638 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:00:30,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-09-01 00:00:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:00:30,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 00:00:30,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:30,758 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 [2023-09-01 00:00:30,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:30,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:30,777 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:30,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212792480] [2023-09-01 00:00:30,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212792480] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:30,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:30,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:00:30,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096847833] [2023-09-01 00:00:30,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:30,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:00:30,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:30,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:00:30,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:00:30,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 478 [2023-09-01 00:00:30,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:30,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:30,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 478 [2023-09-01 00:00:30,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:00:32,331 INFO L130 PetriNetUnfolder]: 387/890 cut-off events. [2023-09-01 00:00:32,331 INFO L131 PetriNetUnfolder]: For 223/223 co-relation queries the response was YES. [2023-09-01 00:00:32,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1987 conditions, 890 events. 387/890 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5199 event pairs, 278 based on Foata normal form. 98/838 useless extension candidates. Maximal degree in co-relation 1979. Up to 514 conditions per place. [2023-09-01 00:00:32,335 INFO L137 encePairwiseOnDemand]: 472/478 looper letters, 51 selfloop transitions, 4 changer transitions 1/73 dead transitions. [2023-09-01 00:00:32,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 73 transitions, 358 flow [2023-09-01 00:00:32,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:00:32,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:00:32,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 628 transitions. [2023-09-01 00:00:32,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43793584379358436 [2023-09-01 00:00:32,338 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 628 transitions. [2023-09-01 00:00:32,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 628 transitions. [2023-09-01 00:00:32,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:00:32,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 628 transitions. [2023-09-01 00:00:32,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:32,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:32,341 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:32,341 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 218 flow. Second operand 3 states and 628 transitions. [2023-09-01 00:00:32,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 73 transitions, 358 flow [2023-09-01 00:00:32,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 73 transitions, 344 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:00:32,343 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 220 flow [2023-09-01 00:00:32,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2023-09-01 00:00:32,344 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -13 predicate places. [2023-09-01 00:00:32,344 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 220 flow [2023-09-01 00:00:32,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:32,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:32,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 00:00:32,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-09-01 00:00:32,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:32,545 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:00:32,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:32,546 INFO L85 PathProgramCache]: Analyzing trace with hash 23690237, now seen corresponding path program 1 times [2023-09-01 00:00:32,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:32,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923476249] [2023-09-01 00:00:32,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:00:32,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:32,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:32,547 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:00:32,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-09-01 00:00:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:00:32,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 00:00:32,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:32,669 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 [2023-09-01 00:00:32,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:32,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:32,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:32,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923476249] [2023-09-01 00:00:32,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923476249] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:32,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:32,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 00:00:32,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006961122] [2023-09-01 00:00:32,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:32,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 00:00:32,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:32,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 00:00:32,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 00:00:33,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-09-01 00:00:33,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:33,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:33,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-09-01 00:00:33,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:00:34,902 INFO L130 PetriNetUnfolder]: 411/923 cut-off events. [2023-09-01 00:00:34,902 INFO L131 PetriNetUnfolder]: For 251/251 co-relation queries the response was YES. [2023-09-01 00:00:34,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2194 conditions, 923 events. 411/923 cut-off events. For 251/251 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5464 event pairs, 102 based on Foata normal form. 0/774 useless extension candidates. Maximal degree in co-relation 2185. Up to 434 conditions per place. [2023-09-01 00:00:34,906 INFO L137 encePairwiseOnDemand]: 470/478 looper letters, 66 selfloop transitions, 10 changer transitions 1/92 dead transitions. [2023-09-01 00:00:34,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 92 transitions, 475 flow [2023-09-01 00:00:34,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 00:00:34,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 00:00:34,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 819 transitions. [2023-09-01 00:00:34,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428347280334728 [2023-09-01 00:00:34,911 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 819 transitions. [2023-09-01 00:00:34,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 819 transitions. [2023-09-01 00:00:34,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:00:34,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 819 transitions. [2023-09-01 00:00:34,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 204.75) internal successors, (819), 4 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:34,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:34,915 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:34,915 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 220 flow. Second operand 4 states and 819 transitions. [2023-09-01 00:00:34,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 92 transitions, 475 flow [2023-09-01 00:00:34,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 92 transitions, 468 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:00:34,917 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 283 flow [2023-09-01 00:00:34,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=283, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2023-09-01 00:00:34,917 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -9 predicate places. [2023-09-01 00:00:34,918 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 283 flow [2023-09-01 00:00:34,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:34,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:34,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 00:00:34,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-09-01 00:00:35,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:35,129 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:00:35,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:35,129 INFO L85 PathProgramCache]: Analyzing trace with hash 23690236, now seen corresponding path program 1 times [2023-09-01 00:00:35,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:35,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095503644] [2023-09-01 00:00:35,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:00:35,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:35,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:35,131 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:00:35,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-09-01 00:00:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:00:35,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2023-09-01 00:00:35,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:35,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:35,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:35,250 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:35,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095503644] [2023-09-01 00:00:35,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095503644] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:35,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:35,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 00:00:35,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276431294] [2023-09-01 00:00:35,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:35,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:00:35,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:35,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:00:35,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:00:35,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 478 [2023-09-01 00:00:35,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 283 flow. Second operand has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:35,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:35,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 478 [2023-09-01 00:00:35,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:00:37,636 INFO L130 PetriNetUnfolder]: 458/1007 cut-off events. [2023-09-01 00:00:37,636 INFO L131 PetriNetUnfolder]: For 562/562 co-relation queries the response was YES. [2023-09-01 00:00:37,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2579 conditions, 1007 events. 458/1007 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6215 event pairs, 160 based on Foata normal form. 0/832 useless extension candidates. Maximal degree in co-relation 2568. Up to 537 conditions per place. [2023-09-01 00:00:37,641 INFO L137 encePairwiseOnDemand]: 466/478 looper letters, 57 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2023-09-01 00:00:37,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 84 transitions, 475 flow [2023-09-01 00:00:37,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:00:37,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:00:37,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2023-09-01 00:00:37,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4316596931659693 [2023-09-01 00:00:37,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2023-09-01 00:00:37,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2023-09-01 00:00:37,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:00:37,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2023-09-01 00:00:37,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:37,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:37,658 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:37,658 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 283 flow. Second operand 3 states and 619 transitions. [2023-09-01 00:00:37,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 84 transitions, 475 flow [2023-09-01 00:00:37,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 84 transitions, 461 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:00:37,661 INFO L231 Difference]: Finished difference. Result has 75 places, 68 transitions, 338 flow [2023-09-01 00:00:37,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=75, PETRI_TRANSITIONS=68} [2023-09-01 00:00:37,662 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -7 predicate places. [2023-09-01 00:00:37,662 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 68 transitions, 338 flow [2023-09-01 00:00:37,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:37,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:37,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 00:00:37,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-09-01 00:00:37,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:37,873 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:00:37,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:37,873 INFO L85 PathProgramCache]: Analyzing trace with hash 736149436, now seen corresponding path program 1 times [2023-09-01 00:00:37,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:37,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730156939] [2023-09-01 00:00:37,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:00:37,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:37,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:37,876 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:00:37,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-09-01 00:00:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:00:38,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 00:00:38,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:38,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 45 [2023-09-01 00:00:38,101 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 00:00:38,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 93 [2023-09-01 00:00:38,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:38,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:38,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:38,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730156939] [2023-09-01 00:00:38,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1730156939] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:38,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:38,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 00:00:38,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263585942] [2023-09-01 00:00:38,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:38,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:00:38,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:38,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:00:38,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:00:38,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 478 [2023-09-01 00:00:38,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 68 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:38,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:38,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 478 [2023-09-01 00:00:38,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:00:40,697 INFO L130 PetriNetUnfolder]: 504/1169 cut-off events. [2023-09-01 00:00:40,697 INFO L131 PetriNetUnfolder]: For 1617/1635 co-relation queries the response was YES. [2023-09-01 00:00:40,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3286 conditions, 1169 events. 504/1169 cut-off events. For 1617/1635 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7682 event pairs, 294 based on Foata normal form. 0/985 useless extension candidates. Maximal degree in co-relation 3274. Up to 817 conditions per place. [2023-09-01 00:00:40,704 INFO L137 encePairwiseOnDemand]: 469/478 looper letters, 51 selfloop transitions, 11 changer transitions 0/79 dead transitions. [2023-09-01 00:00:40,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 79 transitions, 516 flow [2023-09-01 00:00:40,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:00:40,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:00:40,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2023-09-01 00:00:40,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41143654114365413 [2023-09-01 00:00:40,707 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2023-09-01 00:00:40,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2023-09-01 00:00:40,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:00:40,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2023-09-01 00:00:40,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:40,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:40,710 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:40,710 INFO L175 Difference]: Start difference. First operand has 75 places, 68 transitions, 338 flow. Second operand 3 states and 590 transitions. [2023-09-01 00:00:40,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 79 transitions, 516 flow [2023-09-01 00:00:40,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 79 transitions, 488 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:00:40,713 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 414 flow [2023-09-01 00:00:40,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=414, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2023-09-01 00:00:40,714 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -5 predicate places. [2023-09-01 00:00:40,714 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 414 flow [2023-09-01 00:00:40,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:40,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:40,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 00:00:40,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-09-01 00:00:40,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:40,915 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:00:40,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:40,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1345796653, now seen corresponding path program 1 times [2023-09-01 00:00:40,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:40,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067731300] [2023-09-01 00:00:40,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:00:40,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:40,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:40,917 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:00:40,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-09-01 00:00:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:00:41,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 00:00:41,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:41,114 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:00:41,114 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:00:41,115 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:00:41,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 41 [2023-09-01 00:00:41,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:41,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:41,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:41,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067731300] [2023-09-01 00:00:41,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1067731300] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:41,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:41,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 00:00:41,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709274301] [2023-09-01 00:00:41,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:41,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:00:41,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:41,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:00:41,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:00:41,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 478 [2023-09-01 00:00:41,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 414 flow. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:41,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:41,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 478 [2023-09-01 00:00:41,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:00:43,514 INFO L130 PetriNetUnfolder]: 636/1379 cut-off events. [2023-09-01 00:00:43,514 INFO L131 PetriNetUnfolder]: For 2419/2437 co-relation queries the response was YES. [2023-09-01 00:00:43,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4493 conditions, 1379 events. 636/1379 cut-off events. For 2419/2437 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 8884 event pairs, 338 based on Foata normal form. 0/1211 useless extension candidates. Maximal degree in co-relation 4480. Up to 1020 conditions per place. [2023-09-01 00:00:43,520 INFO L137 encePairwiseOnDemand]: 470/478 looper letters, 60 selfloop transitions, 14 changer transitions 0/90 dead transitions. [2023-09-01 00:00:43,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 90 transitions, 670 flow [2023-09-01 00:00:43,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:00:43,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:00:43,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2023-09-01 00:00:43,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121338912133891 [2023-09-01 00:00:43,523 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2023-09-01 00:00:43,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2023-09-01 00:00:43,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:00:43,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2023-09-01 00:00:43,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:43,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:43,527 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:43,527 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 414 flow. Second operand 3 states and 591 transitions. [2023-09-01 00:00:43,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 90 transitions, 670 flow [2023-09-01 00:00:43,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 90 transitions, 634 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:00:43,530 INFO L231 Difference]: Finished difference. Result has 78 places, 85 transitions, 534 flow [2023-09-01 00:00:43,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=534, PETRI_PLACES=78, PETRI_TRANSITIONS=85} [2023-09-01 00:00:43,531 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -4 predicate places. [2023-09-01 00:00:43,531 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 85 transitions, 534 flow [2023-09-01 00:00:43,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:43,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:43,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 00:00:43,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-09-01 00:00:43,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:43,743 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:00:43,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:43,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1291002750, now seen corresponding path program 1 times [2023-09-01 00:00:43,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:43,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175565162] [2023-09-01 00:00:43,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:00:43,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:43,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:43,745 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:00:43,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-09-01 00:00:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:00:43,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 00:00:43,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:43,960 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-09-01 00:00:43,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-09-01 00:00:43,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:43,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:43,991 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:43,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175565162] [2023-09-01 00:00:43,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175565162] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:43,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:43,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:00:43,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721593373] [2023-09-01 00:00:43,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:43,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:00:43,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:43,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:00:43,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:00:44,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 478 [2023-09-01 00:00:44,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 85 transitions, 534 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:44,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:44,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 478 [2023-09-01 00:00:44,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:00:45,389 INFO L130 PetriNetUnfolder]: 589/1305 cut-off events. [2023-09-01 00:00:45,390 INFO L131 PetriNetUnfolder]: For 2823/2835 co-relation queries the response was YES. [2023-09-01 00:00:45,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4547 conditions, 1305 events. 589/1305 cut-off events. For 2823/2835 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8467 event pairs, 323 based on Foata normal form. 0/1153 useless extension candidates. Maximal degree in co-relation 4533. Up to 746 conditions per place. [2023-09-01 00:00:45,396 INFO L137 encePairwiseOnDemand]: 468/478 looper letters, 60 selfloop transitions, 15 changer transitions 0/92 dead transitions. [2023-09-01 00:00:45,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 92 transitions, 718 flow [2023-09-01 00:00:45,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:00:45,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:00:45,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2023-09-01 00:00:45,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4316596931659693 [2023-09-01 00:00:45,398 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2023-09-01 00:00:45,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2023-09-01 00:00:45,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:00:45,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2023-09-01 00:00:45,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:45,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:45,402 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:45,402 INFO L175 Difference]: Start difference. First operand has 78 places, 85 transitions, 534 flow. Second operand 3 states and 619 transitions. [2023-09-01 00:00:45,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 92 transitions, 718 flow [2023-09-01 00:00:45,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 92 transitions, 704 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:00:45,405 INFO L231 Difference]: Finished difference. Result has 78 places, 83 transitions, 532 flow [2023-09-01 00:00:45,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=532, PETRI_PLACES=78, PETRI_TRANSITIONS=83} [2023-09-01 00:00:45,406 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -4 predicate places. [2023-09-01 00:00:45,406 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 83 transitions, 532 flow [2023-09-01 00:00:45,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:45,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:45,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 00:00:45,417 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 (14)] Ended with exit code 0 [2023-09-01 00:00:45,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:45,617 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:00:45,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:45,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1291002751, now seen corresponding path program 1 times [2023-09-01 00:00:45,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:45,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303265866] [2023-09-01 00:00:45,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:00:45,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:45,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:45,619 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:00:45,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-09-01 00:00:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:00:45,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 00:00:45,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:45,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:00:45,846 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 [2023-09-01 00:00:45,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:45,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:45,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:45,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303265866] [2023-09-01 00:00:45,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303265866] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:45,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:45,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:00:45,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578538258] [2023-09-01 00:00:45,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:45,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:00:45,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:45,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:00:45,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:00:46,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 478 [2023-09-01 00:00:46,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 83 transitions, 532 flow. Second operand has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:46,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:46,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 478 [2023-09-01 00:00:46,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:00:46,831 INFO L130 PetriNetUnfolder]: 558/1235 cut-off events. [2023-09-01 00:00:46,831 INFO L131 PetriNetUnfolder]: For 2914/2930 co-relation queries the response was YES. [2023-09-01 00:00:46,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4240 conditions, 1235 events. 558/1235 cut-off events. For 2914/2930 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7889 event pairs, 325 based on Foata normal form. 0/1099 useless extension candidates. Maximal degree in co-relation 4226. Up to 998 conditions per place. [2023-09-01 00:00:46,838 INFO L137 encePairwiseOnDemand]: 475/478 looper letters, 62 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-09-01 00:00:46,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 81 transitions, 642 flow [2023-09-01 00:00:46,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:00:46,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:00:46,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-09-01 00:00:46,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42608089260808923 [2023-09-01 00:00:46,842 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-09-01 00:00:46,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-09-01 00:00:46,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:00:46,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-09-01 00:00:46,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:46,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:46,845 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:46,845 INFO L175 Difference]: Start difference. First operand has 78 places, 83 transitions, 532 flow. Second operand 3 states and 611 transitions. [2023-09-01 00:00:46,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 81 transitions, 642 flow [2023-09-01 00:00:46,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 81 transitions, 612 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:00:46,848 INFO L231 Difference]: Finished difference. Result has 77 places, 81 transitions, 488 flow [2023-09-01 00:00:46,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=488, PETRI_PLACES=77, PETRI_TRANSITIONS=81} [2023-09-01 00:00:46,848 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -5 predicate places. [2023-09-01 00:00:46,849 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 81 transitions, 488 flow [2023-09-01 00:00:46,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:46,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:46,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 00:00:46,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-09-01 00:00:47,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:47,059 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:00:47,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:47,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1291003930, now seen corresponding path program 1 times [2023-09-01 00:00:47,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:47,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518940533] [2023-09-01 00:00:47,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:00:47,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:47,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:47,061 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:00:47,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-09-01 00:00:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:00:47,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 00:00:47,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:47,230 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 [2023-09-01 00:00:47,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:47,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:47,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:47,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518940533] [2023-09-01 00:00:47,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518940533] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:47,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:47,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 00:00:47,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465299857] [2023-09-01 00:00:47,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:47,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 00:00:47,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:47,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 00:00:47,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 00:00:47,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-09-01 00:00:47,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 81 transitions, 488 flow. Second operand has 4 states, 4 states have (on average 187.5) internal successors, (750), 4 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:47,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:47,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-09-01 00:00:47,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:00:49,631 INFO L130 PetriNetUnfolder]: 570/1215 cut-off events. [2023-09-01 00:00:49,631 INFO L131 PetriNetUnfolder]: For 2749/2766 co-relation queries the response was YES. [2023-09-01 00:00:49,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4216 conditions, 1215 events. 570/1215 cut-off events. For 2749/2766 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7517 event pairs, 114 based on Foata normal form. 94/1246 useless extension candidates. Maximal degree in co-relation 4202. Up to 768 conditions per place. [2023-09-01 00:00:49,636 INFO L137 encePairwiseOnDemand]: 472/478 looper letters, 90 selfloop transitions, 11 changer transitions 1/117 dead transitions. [2023-09-01 00:00:49,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 117 transitions, 934 flow [2023-09-01 00:00:49,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 00:00:49,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 00:00:49,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 811 transitions. [2023-09-01 00:00:49,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42416317991631797 [2023-09-01 00:00:49,644 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 811 transitions. [2023-09-01 00:00:49,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 811 transitions. [2023-09-01 00:00:49,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:00:49,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 811 transitions. [2023-09-01 00:00:49,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 202.75) internal successors, (811), 4 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:49,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:49,649 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:49,649 INFO L175 Difference]: Start difference. First operand has 77 places, 81 transitions, 488 flow. Second operand 4 states and 811 transitions. [2023-09-01 00:00:49,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 117 transitions, 934 flow [2023-09-01 00:00:49,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 117 transitions, 932 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:00:49,653 INFO L231 Difference]: Finished difference. Result has 81 places, 84 transitions, 557 flow [2023-09-01 00:00:49,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=557, PETRI_PLACES=81, PETRI_TRANSITIONS=84} [2023-09-01 00:00:49,653 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -1 predicate places. [2023-09-01 00:00:49,653 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 84 transitions, 557 flow [2023-09-01 00:00:49,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 187.5) internal successors, (750), 4 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:49,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:49,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 00:00:49,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-09-01 00:00:49,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:49,864 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:00:49,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:49,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1291003929, now seen corresponding path program 1 times [2023-09-01 00:00:49,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:49,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608538151] [2023-09-01 00:00:49,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:00:49,865 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:49,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:49,865 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:00:49,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-09-01 00:00:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:00:50,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjunts are in the unsatisfiable core [2023-09-01 00:00:50,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:50,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:50,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:50,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:50,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608538151] [2023-09-01 00:00:50,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608538151] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:50,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:50,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 00:00:50,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846699907] [2023-09-01 00:00:50,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:50,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:00:50,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:50,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:00:50,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:00:50,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 478 [2023-09-01 00:00:50,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 84 transitions, 557 flow. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:50,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:50,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 478 [2023-09-01 00:00:50,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:00:51,807 INFO L130 PetriNetUnfolder]: 641/1267 cut-off events. [2023-09-01 00:00:51,807 INFO L131 PetriNetUnfolder]: For 3540/3566 co-relation queries the response was YES. [2023-09-01 00:00:51,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4811 conditions, 1267 events. 641/1267 cut-off events. For 3540/3566 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7353 event pairs, 173 based on Foata normal form. 101/1294 useless extension candidates. Maximal degree in co-relation 4795. Up to 755 conditions per place. [2023-09-01 00:00:51,819 INFO L137 encePairwiseOnDemand]: 466/478 looper letters, 80 selfloop transitions, 20 changer transitions 0/115 dead transitions. [2023-09-01 00:00:51,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 115 transitions, 966 flow [2023-09-01 00:00:51,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:00:51,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:00:51,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 615 transitions. [2023-09-01 00:00:51,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42887029288702927 [2023-09-01 00:00:51,824 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 615 transitions. [2023-09-01 00:00:51,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 615 transitions. [2023-09-01 00:00:51,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:00:51,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 615 transitions. [2023-09-01 00:00:51,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:51,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:51,832 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:51,832 INFO L175 Difference]: Start difference. First operand has 81 places, 84 transitions, 557 flow. Second operand 3 states and 615 transitions. [2023-09-01 00:00:51,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 115 transitions, 966 flow [2023-09-01 00:00:51,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 115 transitions, 961 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:00:51,836 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 706 flow [2023-09-01 00:00:51,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=706, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2023-09-01 00:00:51,838 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 2 predicate places. [2023-09-01 00:00:51,838 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 706 flow [2023-09-01 00:00:51,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:51,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:51,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:00:51,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-09-01 00:00:52,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:52,048 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:00:52,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:52,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1366380303, now seen corresponding path program 1 times [2023-09-01 00:00:52,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:52,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767813992] [2023-09-01 00:00:52,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:00:52,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:52,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:52,049 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:00:52,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-09-01 00:00:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:00:52,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 00:00:52,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:52,250 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 [2023-09-01 00:00:52,256 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 [2023-09-01 00:00:52,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:00:52,318 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 [2023-09-01 00:00:52,327 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-09-01 00:00:52,327 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 13 treesize of output 13 [2023-09-01 00:00:52,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:52,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:52,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:52,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767813992] [2023-09-01 00:00:52,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767813992] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:52,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:52,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 00:00:52,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025616247] [2023-09-01 00:00:52,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:52,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 00:00:52,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:52,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 00:00:52,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 00:00:52,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 478 [2023-09-01 00:00:52,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 706 flow. Second operand has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:52,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:52,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 478 [2023-09-01 00:00:52,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:00:53,954 INFO L130 PetriNetUnfolder]: 583/1169 cut-off events. [2023-09-01 00:00:53,954 INFO L131 PetriNetUnfolder]: For 5154/5192 co-relation queries the response was YES. [2023-09-01 00:00:53,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5017 conditions, 1169 events. 583/1169 cut-off events. For 5154/5192 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6570 event pairs, 279 based on Foata normal form. 10/1137 useless extension candidates. Maximal degree in co-relation 5000. Up to 832 conditions per place. [2023-09-01 00:00:53,959 INFO L137 encePairwiseOnDemand]: 466/478 looper letters, 65 selfloop transitions, 19 changer transitions 1/102 dead transitions. [2023-09-01 00:00:53,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 102 transitions, 932 flow [2023-09-01 00:00:53,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 00:00:53,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 00:00:53,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 810 transitions. [2023-09-01 00:00:53,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236401673640167 [2023-09-01 00:00:53,962 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 810 transitions. [2023-09-01 00:00:53,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 810 transitions. [2023-09-01 00:00:53,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:00:53,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 810 transitions. [2023-09-01 00:00:53,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 202.5) internal successors, (810), 4 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:53,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:53,965 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:53,965 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 706 flow. Second operand 4 states and 810 transitions. [2023-09-01 00:00:53,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 102 transitions, 932 flow [2023-09-01 00:00:53,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 102 transitions, 883 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 00:00:53,970 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 691 flow [2023-09-01 00:00:53,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=691, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2023-09-01 00:00:53,970 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 0 predicate places. [2023-09-01 00:00:53,970 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 691 flow [2023-09-01 00:00:53,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:53,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:53,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:00:53,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-09-01 00:00:54,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:54,191 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:00:54,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:54,192 INFO L85 PathProgramCache]: Analyzing trace with hash -432987915, now seen corresponding path program 1 times [2023-09-01 00:00:54,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:54,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091087674] [2023-09-01 00:00:54,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:00:54,192 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:54,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:54,193 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:00:54,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-09-01 00:00:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:00:54,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 00:00:54,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:54,428 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 [2023-09-01 00:00:54,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:00:54,485 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 [2023-09-01 00:00:54,494 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-09-01 00:00:54,494 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 13 treesize of output 13 [2023-09-01 00:00:54,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:54,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:54,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:54,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091087674] [2023-09-01 00:00:54,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091087674] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:54,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:54,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 00:00:54,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287655651] [2023-09-01 00:00:54,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:54,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 00:00:54,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:54,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 00:00:54,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 00:00:55,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 478 [2023-09-01 00:00:55,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 691 flow. Second operand has 5 states, 5 states have (on average 180.6) internal successors, (903), 5 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:55,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:55,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 478 [2023-09-01 00:00:55,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:00:56,930 INFO L130 PetriNetUnfolder]: 648/1318 cut-off events. [2023-09-01 00:00:56,931 INFO L131 PetriNetUnfolder]: For 4854/4884 co-relation queries the response was YES. [2023-09-01 00:00:56,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5437 conditions, 1318 events. 648/1318 cut-off events. For 4854/4884 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7849 event pairs, 127 based on Foata normal form. 8/1230 useless extension candidates. Maximal degree in co-relation 5421. Up to 715 conditions per place. [2023-09-01 00:00:56,935 INFO L137 encePairwiseOnDemand]: 463/478 looper letters, 108 selfloop transitions, 25 changer transitions 2/148 dead transitions. [2023-09-01 00:00:56,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 148 transitions, 1328 flow [2023-09-01 00:00:56,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 00:00:56,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 00:00:56,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1351 transitions. [2023-09-01 00:00:56,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40376569037656906 [2023-09-01 00:00:56,938 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1351 transitions. [2023-09-01 00:00:56,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1351 transitions. [2023-09-01 00:00:56,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:00:56,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1351 transitions. [2023-09-01 00:00:56,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:56,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:56,943 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:56,943 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 691 flow. Second operand 7 states and 1351 transitions. [2023-09-01 00:00:56,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 148 transitions, 1328 flow [2023-09-01 00:00:56,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 148 transitions, 1300 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:00:56,948 INFO L231 Difference]: Finished difference. Result has 87 places, 94 transitions, 805 flow [2023-09-01 00:00:56,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=805, PETRI_PLACES=87, PETRI_TRANSITIONS=94} [2023-09-01 00:00:56,948 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 5 predicate places. [2023-09-01 00:00:56,948 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 94 transitions, 805 flow [2023-09-01 00:00:56,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 180.6) internal successors, (903), 5 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:56,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:56,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:00:56,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-09-01 00:00:57,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:57,160 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:00:57,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:57,161 INFO L85 PathProgramCache]: Analyzing trace with hash -590582320, now seen corresponding path program 1 times [2023-09-01 00:00:57,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:57,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829478406] [2023-09-01 00:00:57,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:00:57,162 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:57,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:57,167 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:00:57,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-09-01 00:00:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:00:57,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 00:00:57,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:57,382 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 [2023-09-01 00:00:57,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:00:57,449 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 [2023-09-01 00:00:57,458 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-09-01 00:00:57,458 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 13 treesize of output 13 [2023-09-01 00:00:57,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:57,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:57,466 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:57,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829478406] [2023-09-01 00:00:57,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829478406] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:57,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:57,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 00:00:57,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097456703] [2023-09-01 00:00:57,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:57,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 00:00:57,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:57,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 00:00:57,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 00:00:57,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 478 [2023-09-01 00:00:57,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 94 transitions, 805 flow. Second operand has 5 states, 5 states have (on average 180.6) internal successors, (903), 5 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:57,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:57,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 478 [2023-09-01 00:00:57,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:01:00,777 INFO L130 PetriNetUnfolder]: 676/1454 cut-off events. [2023-09-01 00:01:00,778 INFO L131 PetriNetUnfolder]: For 5731/5762 co-relation queries the response was YES. [2023-09-01 00:01:00,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6069 conditions, 1454 events. 676/1454 cut-off events. For 5731/5762 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9119 event pairs, 167 based on Foata normal form. 22/1387 useless extension candidates. Maximal degree in co-relation 6052. Up to 703 conditions per place. [2023-09-01 00:01:00,782 INFO L137 encePairwiseOnDemand]: 463/478 looper letters, 112 selfloop transitions, 31 changer transitions 2/158 dead transitions. [2023-09-01 00:01:00,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 158 transitions, 1555 flow [2023-09-01 00:01:00,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 00:01:00,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 00:01:00,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1349 transitions. [2023-09-01 00:01:00,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4031679617453676 [2023-09-01 00:01:00,785 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1349 transitions. [2023-09-01 00:01:00,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1349 transitions. [2023-09-01 00:01:00,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:01:00,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1349 transitions. [2023-09-01 00:01:00,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 192.71428571428572) internal successors, (1349), 7 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:00,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:00,790 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:00,791 INFO L175 Difference]: Start difference. First operand has 87 places, 94 transitions, 805 flow. Second operand 7 states and 1349 transitions. [2023-09-01 00:01:00,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 158 transitions, 1555 flow [2023-09-01 00:01:00,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 158 transitions, 1521 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 00:01:00,795 INFO L231 Difference]: Finished difference. Result has 91 places, 106 transitions, 1039 flow [2023-09-01 00:01:00,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1039, PETRI_PLACES=91, PETRI_TRANSITIONS=106} [2023-09-01 00:01:00,796 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 9 predicate places. [2023-09-01 00:01:00,796 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 106 transitions, 1039 flow [2023-09-01 00:01:00,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 180.6) internal successors, (903), 5 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:00,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:01:00,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:01:00,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-09-01 00:01:01,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:01:01,009 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:01:01,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:01:01,009 INFO L85 PathProgramCache]: Analyzing trace with hash -591883065, now seen corresponding path program 2 times [2023-09-01 00:01:01,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:01:01,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110444193] [2023-09-01 00:01:01,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 00:01:01,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:01:01,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:01:01,011 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:01:01,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-09-01 00:01:01,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 00:01:01,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 00:01:01,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 00:01:01,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:01:01,262 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 [2023-09-01 00:01:01,266 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 [2023-09-01 00:01:01,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:01:01,309 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 [2023-09-01 00:01:01,326 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-09-01 00:01:01,326 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 13 treesize of output 13 [2023-09-01 00:01:01,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:01:01,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:01:01,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:01:01,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110444193] [2023-09-01 00:01:01,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110444193] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:01:01,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:01:01,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 00:01:01,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455031082] [2023-09-01 00:01:01,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:01:01,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 00:01:01,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:01:01,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 00:01:01,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 00:01:01,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 478 [2023-09-01 00:01:01,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 106 transitions, 1039 flow. Second operand has 5 states, 5 states have (on average 185.6) internal successors, (928), 5 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:01,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:01:01,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 478 [2023-09-01 00:01:01,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:01:03,719 INFO L130 PetriNetUnfolder]: 610/1316 cut-off events. [2023-09-01 00:01:03,720 INFO L131 PetriNetUnfolder]: For 5836/5881 co-relation queries the response was YES. [2023-09-01 00:01:03,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5772 conditions, 1316 events. 610/1316 cut-off events. For 5836/5881 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8193 event pairs, 115 based on Foata normal form. 14/1260 useless extension candidates. Maximal degree in co-relation 5754. Up to 741 conditions per place. [2023-09-01 00:01:03,725 INFO L137 encePairwiseOnDemand]: 464/478 looper letters, 93 selfloop transitions, 46 changer transitions 2/156 dead transitions. [2023-09-01 00:01:03,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 156 transitions, 1605 flow [2023-09-01 00:01:03,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 00:01:03,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 00:01:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1196 transitions. [2023-09-01 00:01:03,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41701534170153415 [2023-09-01 00:01:03,728 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1196 transitions. [2023-09-01 00:01:03,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1196 transitions. [2023-09-01 00:01:03,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:01:03,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1196 transitions. [2023-09-01 00:01:03,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.33333333333334) internal successors, (1196), 6 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:03,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:03,732 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:03,732 INFO L175 Difference]: Start difference. First operand has 91 places, 106 transitions, 1039 flow. Second operand 6 states and 1196 transitions. [2023-09-01 00:01:03,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 156 transitions, 1605 flow [2023-09-01 00:01:03,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 156 transitions, 1567 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 00:01:03,736 INFO L231 Difference]: Finished difference. Result has 90 places, 105 transitions, 1102 flow [2023-09-01 00:01:03,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1102, PETRI_PLACES=90, PETRI_TRANSITIONS=105} [2023-09-01 00:01:03,737 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 8 predicate places. [2023-09-01 00:01:03,737 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 105 transitions, 1102 flow [2023-09-01 00:01:03,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 185.6) internal successors, (928), 5 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:03,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:01:03,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:01:03,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-09-01 00:01:03,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:01:03,942 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:01:03,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:01:03,943 INFO L85 PathProgramCache]: Analyzing trace with hash -591882460, now seen corresponding path program 2 times [2023-09-01 00:01:03,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:01:03,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528509551] [2023-09-01 00:01:03,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 00:01:03,943 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:01:03,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:01:03,945 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:01:03,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-09-01 00:01:04,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 00:01:04,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 00:01:04,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 00:01:04,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:01:04,190 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 [2023-09-01 00:01:04,195 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 [2023-09-01 00:01:04,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:01:04,234 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 [2023-09-01 00:01:04,241 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-09-01 00:01:04,241 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 13 treesize of output 13 [2023-09-01 00:01:04,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:01:04,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:01:04,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:01:04,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528509551] [2023-09-01 00:01:04,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528509551] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:01:04,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:01:04,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 00:01:04,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588867785] [2023-09-01 00:01:04,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:01:04,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 00:01:04,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:01:04,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 00:01:04,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 00:01:04,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 478 [2023-09-01 00:01:04,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 105 transitions, 1102 flow. Second operand has 5 states, 5 states have (on average 185.6) internal successors, (928), 5 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:04,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:01:04,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 478 [2023-09-01 00:01:04,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:01:06,496 INFO L130 PetriNetUnfolder]: 610/1305 cut-off events. [2023-09-01 00:01:06,496 INFO L131 PetriNetUnfolder]: For 5758/5803 co-relation queries the response was YES. [2023-09-01 00:01:06,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5829 conditions, 1305 events. 610/1305 cut-off events. For 5758/5803 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7923 event pairs, 110 based on Foata normal form. 22/1263 useless extension candidates. Maximal degree in co-relation 5812. Up to 729 conditions per place. [2023-09-01 00:01:06,501 INFO L137 encePairwiseOnDemand]: 464/478 looper letters, 91 selfloop transitions, 47 changer transitions 2/153 dead transitions. [2023-09-01 00:01:06,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 153 transitions, 1656 flow [2023-09-01 00:01:06,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 00:01:06,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 00:01:06,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1194 transitions. [2023-09-01 00:01:06,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41631799163179917 [2023-09-01 00:01:06,504 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1194 transitions. [2023-09-01 00:01:06,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1194 transitions. [2023-09-01 00:01:06,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:01:06,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1194 transitions. [2023-09-01 00:01:06,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:06,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:06,508 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:06,508 INFO L175 Difference]: Start difference. First operand has 90 places, 105 transitions, 1102 flow. Second operand 6 states and 1194 transitions. [2023-09-01 00:01:06,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 153 transitions, 1656 flow [2023-09-01 00:01:06,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 153 transitions, 1570 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-09-01 00:01:06,520 INFO L231 Difference]: Finished difference. Result has 89 places, 104 transitions, 1110 flow [2023-09-01 00:01:06,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1110, PETRI_PLACES=89, PETRI_TRANSITIONS=104} [2023-09-01 00:01:06,521 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 7 predicate places. [2023-09-01 00:01:06,521 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 104 transitions, 1110 flow [2023-09-01 00:01:06,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 185.6) internal successors, (928), 5 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:06,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:01:06,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:01:06,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-09-01 00:01:06,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:01:06,725 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:01:06,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:01:06,725 INFO L85 PathProgramCache]: Analyzing trace with hash 525305147, now seen corresponding path program 1 times [2023-09-01 00:01:06,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:01:06,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044531943] [2023-09-01 00:01:06,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:01:06,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:01:06,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:01:06,727 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:01:06,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-09-01 00:01:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:01:06,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 00:01:06,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:01:07,023 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_259| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_259|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_259| (_ bv0 1)) |c_#valid|))) is different from true [2023-09-01 00:01:07,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:01:07,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:01:07,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:01:07,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044531943] [2023-09-01 00:01:07,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044531943] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:01:07,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:01:07,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 00:01:07,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834776374] [2023-09-01 00:01:07,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:01:07,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 00:01:07,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:01:07,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 00:01:07,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-09-01 00:01:07,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 478 [2023-09-01 00:01:07,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 104 transitions, 1110 flow. Second operand has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:07,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:01:07,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 478 [2023-09-01 00:01:07,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:01:08,719 INFO L130 PetriNetUnfolder]: 972/1894 cut-off events. [2023-09-01 00:01:08,719 INFO L131 PetriNetUnfolder]: For 7439/7439 co-relation queries the response was YES. [2023-09-01 00:01:08,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8107 conditions, 1894 events. 972/1894 cut-off events. For 7439/7439 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 11309 event pairs, 422 based on Foata normal form. 0/1710 useless extension candidates. Maximal degree in co-relation 8092. Up to 1167 conditions per place. [2023-09-01 00:01:08,726 INFO L137 encePairwiseOnDemand]: 460/478 looper letters, 92 selfloop transitions, 30 changer transitions 5/129 dead transitions. [2023-09-01 00:01:08,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 129 transitions, 1548 flow [2023-09-01 00:01:08,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 00:01:08,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 00:01:08,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 587 transitions. [2023-09-01 00:01:08,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3070083682008368 [2023-09-01 00:01:08,728 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 587 transitions. [2023-09-01 00:01:08,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 587 transitions. [2023-09-01 00:01:08,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:01:08,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 587 transitions. [2023-09-01 00:01:08,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:08,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:08,732 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:08,732 INFO L175 Difference]: Start difference. First operand has 89 places, 104 transitions, 1110 flow. Second operand 4 states and 587 transitions. [2023-09-01 00:01:08,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 129 transitions, 1548 flow [2023-09-01 00:01:08,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 129 transitions, 1509 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-09-01 00:01:08,736 INFO L231 Difference]: Finished difference. Result has 91 places, 114 transitions, 1250 flow [2023-09-01 00:01:08,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1250, PETRI_PLACES=91, PETRI_TRANSITIONS=114} [2023-09-01 00:01:08,738 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 9 predicate places. [2023-09-01 00:01:08,738 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 114 transitions, 1250 flow [2023-09-01 00:01:08,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:08,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:01:08,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:01:08,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-09-01 00:01:08,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:01:08,939 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:01:08,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:01:08,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1929325578, now seen corresponding path program 1 times [2023-09-01 00:01:08,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:01:08,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656407528] [2023-09-01 00:01:08,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:01:08,940 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:01:08,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:01:08,941 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:01:08,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-09-01 00:01:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:01:09,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 00:01:09,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:01:09,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:01:09,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:01:09,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:01:09,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656407528] [2023-09-01 00:01:09,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656407528] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:01:09,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:01:09,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 00:01:09,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975351641] [2023-09-01 00:01:09,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:01:09,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:01:09,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:01:09,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:01:09,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:01:09,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 478 [2023-09-01 00:01:09,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 114 transitions, 1250 flow. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:09,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:01:09,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 478 [2023-09-01 00:01:09,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:01:10,437 INFO L130 PetriNetUnfolder]: 96/334 cut-off events. [2023-09-01 00:01:10,437 INFO L131 PetriNetUnfolder]: For 1161/1161 co-relation queries the response was YES. [2023-09-01 00:01:10,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1401 conditions, 334 events. 96/334 cut-off events. For 1161/1161 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1675 event pairs, 72 based on Foata normal form. 16/316 useless extension candidates. Maximal degree in co-relation 1386. Up to 235 conditions per place. [2023-09-01 00:01:10,439 INFO L137 encePairwiseOnDemand]: 475/478 looper letters, 52 selfloop transitions, 5 changer transitions 1/67 dead transitions. [2023-09-01 00:01:10,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 67 transitions, 761 flow [2023-09-01 00:01:10,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:01:10,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:01:10,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 609 transitions. [2023-09-01 00:01:10,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246861924686193 [2023-09-01 00:01:10,440 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 609 transitions. [2023-09-01 00:01:10,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 609 transitions. [2023-09-01 00:01:10,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:01:10,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 609 transitions. [2023-09-01 00:01:10,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:10,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:10,443 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:10,443 INFO L175 Difference]: Start difference. First operand has 91 places, 114 transitions, 1250 flow. Second operand 3 states and 609 transitions. [2023-09-01 00:01:10,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 67 transitions, 761 flow [2023-09-01 00:01:10,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 67 transitions, 480 flow, removed 29 selfloop flow, removed 17 redundant places. [2023-09-01 00:01:10,447 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 340 flow [2023-09-01 00:01:10,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2023-09-01 00:01:10,447 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -18 predicate places. [2023-09-01 00:01:10,448 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 340 flow [2023-09-01 00:01:10,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:10,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:01:10,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:01:10,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-09-01 00:01:10,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:01:10,657 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:01:10,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:01:10,657 INFO L85 PathProgramCache]: Analyzing trace with hash 218178047, now seen corresponding path program 1 times [2023-09-01 00:01:10,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:01:10,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55306123] [2023-09-01 00:01:10,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:01:10,658 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:01:10,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:01:10,659 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:01:10,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-09-01 00:01:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:01:10,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 00:01:10,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:01:10,848 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 [2023-09-01 00:01:10,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:01:10,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:01:10,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:01:10,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55306123] [2023-09-01 00:01:10,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55306123] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:01:10,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:01:10,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 00:01:10,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135023231] [2023-09-01 00:01:10,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:01:10,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:01:10,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:01:10,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:01:10,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:01:11,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 478 [2023-09-01 00:01:11,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:11,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:01:11,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 478 [2023-09-01 00:01:11,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:01:12,544 INFO L130 PetriNetUnfolder]: 96/327 cut-off events. [2023-09-01 00:01:12,545 INFO L131 PetriNetUnfolder]: For 353/353 co-relation queries the response was YES. [2023-09-01 00:01:12,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 327 events. 96/327 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1579 event pairs, 60 based on Foata normal form. 4/306 useless extension candidates. Maximal degree in co-relation 956. Up to 138 conditions per place. [2023-09-01 00:01:12,546 INFO L137 encePairwiseOnDemand]: 469/478 looper letters, 27 selfloop transitions, 28 changer transitions 0/62 dead transitions. [2023-09-01 00:01:12,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 458 flow [2023-09-01 00:01:12,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:01:12,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:01:12,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 600 transitions. [2023-09-01 00:01:12,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41841004184100417 [2023-09-01 00:01:12,550 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 600 transitions. [2023-09-01 00:01:12,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 600 transitions. [2023-09-01 00:01:12,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:01:12,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 600 transitions. [2023-09-01 00:01:12,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:12,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:12,553 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:12,553 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 340 flow. Second operand 3 states and 600 transitions. [2023-09-01 00:01:12,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 458 flow [2023-09-01 00:01:12,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 62 transitions, 448 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:01:12,554 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 382 flow [2023-09-01 00:01:12,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=382, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2023-09-01 00:01:12,555 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -21 predicate places. [2023-09-01 00:01:12,555 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 382 flow [2023-09-01 00:01:12,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:12,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:01:12,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:01:12,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-09-01 00:01:12,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:01:12,756 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:01:12,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:01:12,756 INFO L85 PathProgramCache]: Analyzing trace with hash 488104228, now seen corresponding path program 1 times [2023-09-01 00:01:12,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:01:12,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258686188] [2023-09-01 00:01:12,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:01:12,757 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:01:12,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:01:12,758 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:01:12,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-09-01 00:01:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:01:12,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 00:01:12,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:01:12,972 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 [2023-09-01 00:01:12,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:01:12,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:01:12,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:01:12,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258686188] [2023-09-01 00:01:12,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258686188] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:01:12,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:01:12,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 00:01:12,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790692610] [2023-09-01 00:01:12,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:01:12,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:01:12,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:01:12,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:01:12,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:01:13,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 478 [2023-09-01 00:01:13,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 382 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:13,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:01:13,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 478 [2023-09-01 00:01:13,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:01:14,407 INFO L130 PetriNetUnfolder]: 96/312 cut-off events. [2023-09-01 00:01:14,407 INFO L131 PetriNetUnfolder]: For 359/359 co-relation queries the response was YES. [2023-09-01 00:01:14,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 956 conditions, 312 events. 96/312 cut-off events. For 359/359 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1443 event pairs, 60 based on Foata normal form. 4/291 useless extension candidates. Maximal degree in co-relation 949. Up to 138 conditions per place. [2023-09-01 00:01:14,408 INFO L137 encePairwiseOnDemand]: 469/478 looper letters, 27 selfloop transitions, 28 changer transitions 0/60 dead transitions. [2023-09-01 00:01:14,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 500 flow [2023-09-01 00:01:14,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:01:14,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:01:14,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2023-09-01 00:01:14,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121338912133891 [2023-09-01 00:01:14,410 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2023-09-01 00:01:14,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2023-09-01 00:01:14,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:01:14,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2023-09-01 00:01:14,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:14,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:14,417 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:14,417 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 382 flow. Second operand 3 states and 591 transitions. [2023-09-01 00:01:14,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 500 flow [2023-09-01 00:01:14,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 60 transitions, 444 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:01:14,419 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 378 flow [2023-09-01 00:01:14,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2023-09-01 00:01:14,419 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -23 predicate places. [2023-09-01 00:01:14,419 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 378 flow [2023-09-01 00:01:14,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:14,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:01:14,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:01:14,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-09-01 00:01:14,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:01:14,633 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:01:14,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:01:14,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1049639630, now seen corresponding path program 1 times [2023-09-01 00:01:14,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:01:14,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949501518] [2023-09-01 00:01:14,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:01:14,634 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:01:14,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:01:14,635 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:01:14,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-09-01 00:01:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:01:15,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 33 conjunts are in the unsatisfiable core [2023-09-01 00:01:15,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:01:15,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2023-09-01 00:01:15,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 69 [2023-09-01 00:01:15,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 69 [2023-09-01 00:01:15,342 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-09-01 00:01:15,342 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 13 treesize of output 13 [2023-09-01 00:01:15,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-09-01 00:01:15,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:01:15,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:01:15,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:01:15,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949501518] [2023-09-01 00:01:15,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949501518] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:01:15,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:01:15,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 00:01:15,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373446313] [2023-09-01 00:01:15,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:01:15,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 00:01:15,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:01:15,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 00:01:15,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-09-01 00:01:16,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 478 [2023-09-01 00:01:16,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 378 flow. Second operand has 9 states, 9 states have (on average 151.77777777777777) internal successors, (1366), 9 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:16,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:01:16,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 478 [2023-09-01 00:01:16,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:01:21,462 INFO L130 PetriNetUnfolder]: 128/387 cut-off events. [2023-09-01 00:01:21,462 INFO L131 PetriNetUnfolder]: For 439/439 co-relation queries the response was YES. [2023-09-01 00:01:21,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 387 events. 128/387 cut-off events. For 439/439 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1939 event pairs, 2 based on Foata normal form. 0/354 useless extension candidates. Maximal degree in co-relation 1208. Up to 126 conditions per place. [2023-09-01 00:01:21,463 INFO L137 encePairwiseOnDemand]: 462/478 looper letters, 56 selfloop transitions, 50 changer transitions 0/110 dead transitions. [2023-09-01 00:01:21,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 110 transitions, 859 flow [2023-09-01 00:01:21,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 00:01:21,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 00:01:21,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1736 transitions. [2023-09-01 00:01:21,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3301635602890833 [2023-09-01 00:01:21,467 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1736 transitions. [2023-09-01 00:01:21,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1736 transitions. [2023-09-01 00:01:21,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:01:21,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1736 transitions. [2023-09-01 00:01:21,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 157.8181818181818) internal successors, (1736), 11 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:21,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 478.0) internal successors, (5736), 12 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:21,475 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 478.0) internal successors, (5736), 12 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:21,475 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 378 flow. Second operand 11 states and 1736 transitions. [2023-09-01 00:01:21,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 110 transitions, 859 flow [2023-09-01 00:01:21,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 110 transitions, 781 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:01:21,477 INFO L231 Difference]: Finished difference. Result has 70 places, 79 transitions, 685 flow [2023-09-01 00:01:21,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=685, PETRI_PLACES=70, PETRI_TRANSITIONS=79} [2023-09-01 00:01:21,478 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2023-09-01 00:01:21,478 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 79 transitions, 685 flow [2023-09-01 00:01:21,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 151.77777777777777) internal successors, (1366), 9 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:21,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:01:21,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:01:21,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-09-01 00:01:21,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:01:21,693 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:01:21,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:01:21,693 INFO L85 PathProgramCache]: Analyzing trace with hash 152350123, now seen corresponding path program 1 times [2023-09-01 00:01:21,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:01:21,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158314994] [2023-09-01 00:01:21,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:01:21,694 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:01:21,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:01:21,695 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:01:21,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-09-01 00:01:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:01:21,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 00:01:21,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:01:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:01:22,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:01:22,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:01:22,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158314994] [2023-09-01 00:01:22,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158314994] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:01:22,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:01:22,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 00:01:22,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607743131] [2023-09-01 00:01:22,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:01:22,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 00:01:22,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:01:22,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 00:01:22,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 00:01:22,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 478 [2023-09-01 00:01:22,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 79 transitions, 685 flow. Second operand has 5 states, 5 states have (on average 179.2) internal successors, (896), 5 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:22,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:01:22,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 478 [2023-09-01 00:01:22,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:01:24,242 INFO L130 PetriNetUnfolder]: 154/461 cut-off events. [2023-09-01 00:01:24,243 INFO L131 PetriNetUnfolder]: For 1025/1025 co-relation queries the response was YES. [2023-09-01 00:01:24,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 461 events. 154/461 cut-off events. For 1025/1025 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2510 event pairs, 54 based on Foata normal form. 6/446 useless extension candidates. Maximal degree in co-relation 1637. Up to 276 conditions per place. [2023-09-01 00:01:24,244 INFO L137 encePairwiseOnDemand]: 465/478 looper letters, 72 selfloop transitions, 22 changer transitions 0/97 dead transitions. [2023-09-01 00:01:24,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 97 transitions, 1004 flow [2023-09-01 00:01:24,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 00:01:24,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 00:01:24,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1110 transitions. [2023-09-01 00:01:24,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38702928870292885 [2023-09-01 00:01:24,246 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1110 transitions. [2023-09-01 00:01:24,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1110 transitions. [2023-09-01 00:01:24,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:01:24,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1110 transitions. [2023-09-01 00:01:24,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:24,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:24,250 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:24,250 INFO L175 Difference]: Start difference. First operand has 70 places, 79 transitions, 685 flow. Second operand 6 states and 1110 transitions. [2023-09-01 00:01:24,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 97 transitions, 1004 flow [2023-09-01 00:01:24,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 97 transitions, 972 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-09-01 00:01:24,252 INFO L231 Difference]: Finished difference. Result has 73 places, 79 transitions, 787 flow [2023-09-01 00:01:24,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=787, PETRI_PLACES=73, PETRI_TRANSITIONS=79} [2023-09-01 00:01:24,253 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -9 predicate places. [2023-09-01 00:01:24,253 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 79 transitions, 787 flow [2023-09-01 00:01:24,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 179.2) internal successors, (896), 5 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:24,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:01:24,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:01:24,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-09-01 00:01:24,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:01:24,454 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:01:24,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:01:24,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1670878672, now seen corresponding path program 1 times [2023-09-01 00:01:24,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:01:24,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757993832] [2023-09-01 00:01:24,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:01:24,455 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:01:24,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:01:24,456 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:01:24,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-09-01 00:01:24,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:01:24,947 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:01:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:01:25,223 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-09-01 00:01:25,224 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:01:25,224 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK (58 of 59 remaining) [2023-09-01 00:01:25,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (57 of 59 remaining) [2023-09-01 00:01:25,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 59 remaining) [2023-09-01 00:01:25,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 59 remaining) [2023-09-01 00:01:25,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 59 remaining) [2023-09-01 00:01:25,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 59 remaining) [2023-09-01 00:01:25,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 59 remaining) [2023-09-01 00:01:25,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 59 remaining) [2023-09-01 00:01:25,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (50 of 59 remaining) [2023-09-01 00:01:25,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 59 remaining) [2023-09-01 00:01:25,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 59 remaining) [2023-09-01 00:01:25,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (47 of 59 remaining) [2023-09-01 00:01:25,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 59 remaining) [2023-09-01 00:01:25,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 59 remaining) [2023-09-01 00:01:25,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 59 remaining) [2023-09-01 00:01:25,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 59 remaining) [2023-09-01 00:01:25,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 59 remaining) [2023-09-01 00:01:25,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 59 remaining) [2023-09-01 00:01:25,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 59 remaining) [2023-09-01 00:01:25,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 59 remaining) [2023-09-01 00:01:25,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 59 remaining) [2023-09-01 00:01:25,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 59 remaining) [2023-09-01 00:01:25,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 59 remaining) [2023-09-01 00:01:25,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 59 remaining) [2023-09-01 00:01:25,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 59 remaining) [2023-09-01 00:01:25,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 59 remaining) [2023-09-01 00:01:25,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 59 remaining) [2023-09-01 00:01:25,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 59 remaining) [2023-09-01 00:01:25,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK (30 of 59 remaining) [2023-09-01 00:01:25,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 59 remaining) [2023-09-01 00:01:25,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 59 remaining) [2023-09-01 00:01:25,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 59 remaining) [2023-09-01 00:01:25,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 59 remaining) [2023-09-01 00:01:25,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK (25 of 59 remaining) [2023-09-01 00:01:25,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 59 remaining) [2023-09-01 00:01:25,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 59 remaining) [2023-09-01 00:01:25,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK (22 of 59 remaining) [2023-09-01 00:01:25,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 59 remaining) [2023-09-01 00:01:25,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 59 remaining) [2023-09-01 00:01:25,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 59 remaining) [2023-09-01 00:01:25,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 59 remaining) [2023-09-01 00:01:25,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 59 remaining) [2023-09-01 00:01:25,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 59 remaining) [2023-09-01 00:01:25,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 59 remaining) [2023-09-01 00:01:25,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 59 remaining) [2023-09-01 00:01:25,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 59 remaining) [2023-09-01 00:01:25,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 59 remaining) [2023-09-01 00:01:25,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 59 remaining) [2023-09-01 00:01:25,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 59 remaining) [2023-09-01 00:01:25,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 59 remaining) [2023-09-01 00:01:25,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 59 remaining) [2023-09-01 00:01:25,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 59 remaining) [2023-09-01 00:01:25,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 59 remaining) [2023-09-01 00:01:25,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 59 remaining) [2023-09-01 00:01:25,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 59 remaining) [2023-09-01 00:01:25,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 59 remaining) [2023-09-01 00:01:25,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 59 remaining) [2023-09-01 00:01:25,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 59 remaining) [2023-09-01 00:01:25,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 59 remaining) [2023-09-01 00:01:25,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-09-01 00:01:25,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:01:25,434 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:01:25,438 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 00:01:25,438 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 00:01:25,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 12:01:25 BasicIcfg [2023-09-01 00:01:25,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 00:01:25,476 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 00:01:25,477 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 00:01:25,477 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 00:01:25,477 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:49:48" (3/4) ... [2023-09-01 00:01:25,479 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-09-01 00:01:25,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 00:01:25,479 INFO L158 Benchmark]: Toolchain (without parser) took 698422.06ms. Allocated memory was 83.9MB in the beginning and 161.5MB in the end (delta: 77.6MB). Free memory was 57.6MB in the beginning and 42.8MB in the end (delta: 14.9MB). Peak memory consumption was 93.8MB. Max. memory is 16.1GB. [2023-09-01 00:01:25,480 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 83.9MB. Free memory is still 61.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:01:25,480 INFO L158 Benchmark]: CACSL2BoogieTranslator took 706.01ms. Allocated memory was 83.9MB in the beginning and 109.1MB in the end (delta: 25.2MB). Free memory was 57.4MB in the beginning and 69.1MB in the end (delta: -11.7MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. [2023-09-01 00:01:25,480 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.18ms. Allocated memory is still 109.1MB. Free memory was 69.1MB in the beginning and 66.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 00:01:25,480 INFO L158 Benchmark]: Boogie Preprocessor took 31.28ms. Allocated memory is still 109.1MB. Free memory was 66.0MB in the beginning and 62.3MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 00:01:25,481 INFO L158 Benchmark]: RCFGBuilder took 729.57ms. Allocated memory is still 109.1MB. Free memory was 62.3MB in the beginning and 53.6MB in the end (delta: 8.8MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2023-09-01 00:01:25,481 INFO L158 Benchmark]: TraceAbstraction took 696906.78ms. Allocated memory was 109.1MB in the beginning and 161.5MB in the end (delta: 52.4MB). Free memory was 52.9MB in the beginning and 42.8MB in the end (delta: 10.2MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. [2023-09-01 00:01:25,481 INFO L158 Benchmark]: Witness Printer took 2.64ms. Allocated memory is still 161.5MB. Free memory is still 42.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:01:25,482 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 83.9MB. Free memory is still 61.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 706.01ms. Allocated memory was 83.9MB in the beginning and 109.1MB in the end (delta: 25.2MB). Free memory was 57.4MB in the beginning and 69.1MB in the end (delta: -11.7MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.18ms. Allocated memory is still 109.1MB. Free memory was 69.1MB in the beginning and 66.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.28ms. Allocated memory is still 109.1MB. Free memory was 66.0MB in the beginning and 62.3MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 729.57ms. Allocated memory is still 109.1MB. Free memory was 62.3MB in the beginning and 53.6MB in the end (delta: 8.8MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. * TraceAbstraction took 696906.78ms. Allocated memory was 109.1MB in the beginning and 161.5MB in the end (delta: 52.4MB). Free memory was 52.9MB in the beginning and 42.8MB in the end (delta: 10.2MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. * Witness Printer took 2.64ms. Allocated memory is still 161.5MB. Free memory is still 42.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 628.9s, 208 PlacesBefore, 82 PlacesAfterwards, 210 TransitionsBefore, 80 TransitionsAfterwards, 4260 CoEnabledTransitionPairs, 8 FixpointIterations, 158 TrivialSequentialCompositions, 83 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 266 TotalNumberOfCompositions, 17410 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5816, independent: 5410, independent conditional: 0, independent unconditional: 5410, dependent: 406, dependent conditional: 0, dependent unconditional: 406, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2190, independent: 2093, independent conditional: 0, independent unconditional: 2093, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5816, independent: 3317, independent conditional: 0, independent unconditional: 3317, dependent: 309, dependent conditional: 0, dependent unconditional: 309, unknown: 2190, unknown conditional: 0, unknown unconditional: 2190] , Statistics on independence cache: Total cache size (in pairs): 293, Positive cache size: 264, Positive conditional cache size: 0, Positive unconditional cache size: 264, Negative cache size: 29, Negative conditional cache size: 0, Negative unconditional cache size: 29, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 1675]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1675. Possible FailurePath: [L1676] 0 pthread_t t1,t2; [L1688] 0 struct device *my_dev; [L1733] CALL, EXPR 0 my_drv_init() [L1727] 0 return 0; [L1733] RET, EXPR 0 my_drv_init() [L1733] 0 int ret = my_drv_init(); [L1734] COND TRUE 0 ret==0 [L1735] 0 int probe_ret; [L1736] 0 struct my_data data; [L1737] CALL, EXPR 0 my_drv_probe(&data) [L1705] 0 data->shared.a = 0 [L1706] 0 data->shared.b = 0 [L1707] EXPR 0 data->shared.a [L1707] CALL 0 ldv_assert(data->shared.a==0) [L1675] COND FALSE 0 !(!expression) [L1707] RET 0 ldv_assert(data->shared.a==0) [L1708] EXPR 0 data->shared.b [L1708] CALL 0 ldv_assert(data->shared.b==0) [L1675] COND FALSE 0 !(!expression) [L1708] RET 0 ldv_assert(data->shared.b==0) [L1709] 0 int res = __VERIFIER_nondet_int(); [L1710] COND FALSE 0 !(\read(res)) [L1712] 0 my_dev = &data->dev [L1713] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, ((void *)0)) VAL [arg={0:0}, data={-2147483648:0}, data={-2147483648:0}, my_dev={-2147483648:24}, pthread_create(&t1, ((void *)0), my_callback, ((void *)0))=0, res=0, t1={3:0}, t2={4:0}] [L1714] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, ((void *)0)) VAL [arg={0:0}, data={-2147483648:0}, data={-2147483648:0}, my_dev={-2147483648:24}, pthread_create(&t2, ((void *)0), my_callback, ((void *)0))=1, res=0, t1={3:0}, t2={4:0}] [L1715] 0 return 0; [L1737] RET, EXPR 0 my_drv_probe(&data) [L1690] 1 struct my_data *data; [L1691] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (my_dev); [L1691] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (my_dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1693] 1 data->shared.a = 1 VAL [__mptr={-2147483648:24}, arg={0:0}, arg={0:0}, data={-2147483648:0}, my_dev={-2147483648:24}, t1={3:0}, t2={4:0}] [L1696] EXPR 1 data->shared.b [L1696] 1 int lb = data->shared.b; [L1690] 2 struct my_data *data; [L1691] 2 const typeof( ((struct my_data *)0)->dev ) *__mptr = (my_dev); [L1691] 2 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (my_dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1693] 2 data->shared.a = 1 VAL [__mptr={-2147483648:24}, arg={0:0}, arg={0:0}, data={-2147483648:0}, lb=0, my_dev={-2147483648:24}, t1={3:0}, t2={4:0}] [L1696] EXPR 2 data->shared.b [L1696] 2 int lb = data->shared.b; [L1737] 0 probe_ret = my_drv_probe(&data) [L1738] COND TRUE 0 probe_ret==0 [L1739] CALL 0 my_drv_disconnect(&data) [L1721] 0 void *status; VAL [__mptr={-2147483648:24}, arg={0:0}, arg={0:0}, data={-2147483648:0}, data={-2147483648:0}, data={-2147483648:0}, lb=0, my_dev={-2147483648:24}, status={7:0}, t1={3:0}, t2={4:0}] [L1699] 1 data->shared.b = lb + 1 [L1701] 1 return 0; [L1722] 0 \read(t1) VAL [\read(t1)=0, \result={0:0}, __mptr={-2147483648:24}, arg={0:0}, arg={0:0}, data={-2147483648:0}, data={-2147483648:0}, data={-2147483648:0}, lb=0, my_dev={-2147483648:24}, status={7:0}, t1={3:0}, t2={4:0}] [L1699] 2 data->shared.b = lb + 1 [L1701] 2 return 0; [L1722] FCALL, JOIN 1 pthread_join(t1, &status) VAL [\read(t1)=0, \result={0:0}, __mptr={-2147483648:24}, arg={0:0}, arg={0:0}, data={-2147483648:0}, data={-2147483648:0}, data={-2147483648:0}, lb=0, my_dev={-2147483648:24}, pthread_join(t1, &status)={0:0}, status={7:0}, t1={3:0}, t2={4:0}] [L1723] 0 \read(t2) VAL [\read(t2)=1, \result={0:0}, __mptr={-2147483648:24}, arg={0:0}, arg={0:0}, data={-2147483648:0}, data={-2147483648:0}, data={-2147483648:0}, lb=0, my_dev={-2147483648:24}, status={7:0}, t1={3:0}, t2={4:0}] [L1723] FCALL, JOIN 2 pthread_join(t2, &status) VAL [\read(t2)=1, \result={0:0}, __mptr={-2147483648:24}, arg={0:0}, arg={0:0}, data={-2147483648:0}, data={-2147483648:0}, data={-2147483648:0}, lb=0, my_dev={-2147483648:24}, pthread_join(t2, &status)={0:0}, status={7:0}, t1={3:0}, t2={4:0}] [L1739] RET 0 my_drv_disconnect(&data) [L1740] EXPR 0 data.shared.a [L1740] CALL 0 ldv_assert(data.shared.a==1) [L1675] COND FALSE 0 !(!expression) [L1740] RET 0 ldv_assert(data.shared.a==1) [L1741] EXPR 0 data.shared.b [L1741] CALL 0 ldv_assert(data.shared.b==2) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, __mptr={-2147483648:24}, arg={0:0}, arg={0:0}, data={-2147483648:0}, expression=0, lb=0, my_dev={-2147483648:24}, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 1732]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 222 locations, 59 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 696.8s, OverallIterations: 28, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 54.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 629.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6046 SdHoareTripleChecker+Valid, 50.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3364 mSDsluCounter, 967 SdHoareTripleChecker+Invalid, 47.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 149 IncrementalHoareTripleChecker+Unchecked, 601 mSDsCounter, 275 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7003 IncrementalHoareTripleChecker+Invalid, 7427 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 275 mSolverCounterUnsat, 366 mSDtfsCounter, 7003 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1250occurred in iteration=22, InterpolantAutomatonStates: 109, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 199 NumberOfCodeBlocks, 199 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 154 ConstructedInterpolants, 7 QuantifiedInterpolants, 1775 SizeOfPredicates, 114 NumberOfNonLiveVariables, 4396 ConjunctsInSsa, 271 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-09-01 00:01:25,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample