./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 AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/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 AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:56:16,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:56:16,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:56:16,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:56:16,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:56:16,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:56:16,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:56:16,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:56:16,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:56:16,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:56:16,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:56:16,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:56:16,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:56:16,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:56:16,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:56:16,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:56:16,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:56:16,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:56:16,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:56:16,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:56:16,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:56:16,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:56:16,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:56:16,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:56:16,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:56:16,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:56:16,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:56:16,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:56:16,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:56:16,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:56:16,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:56:16,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:56:16,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:56:16,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:56:16,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:56:16,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:56:16,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:56:16,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:56:16,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:56:16,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:56:16,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:56:16,273 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 20:56:16,293 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:56:16,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:56:16,294 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:56:16,294 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:56:16,294 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:56:16,295 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:56:16,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:56:16,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:56:16,295 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:56:16,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:56:16,296 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:56:16,296 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:56:16,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:56:16,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:56:16,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:56:16,297 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:56:16,297 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:56:16,297 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:56:16,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:56:16,298 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:56:16,298 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:56:16,298 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:56:16,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:56:16,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:56:16,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:56:16,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:56:16,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:56:16,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:56:16,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 20:56:16,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 20:56:16,300 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:56:16,300 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:56:16,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:56:16,300 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:56:16,300 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:56:16,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:56:16,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:56:16,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:56:16,644 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:56:16,644 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:56:16,645 INFO L432 ainManager$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 [2023-08-29 20:56:17,801 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:56:18,154 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:56:18,155 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i [2023-08-29 20:56:18,179 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2af3f9209/93e65562153b440aa79d32e3e6751a5e/FLAG19ed681d1 [2023-08-29 20:56:18,201 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2af3f9209/93e65562153b440aa79d32e3e6751a5e [2023-08-29 20:56:18,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:56:18,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:56:18,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:56:18,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:56:18,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:56:18,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:56:18" (1/1) ... [2023-08-29 20:56:18,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55bc361c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:56:18, skipping insertion in model container [2023-08-29 20:56:18,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:56:18" (1/1) ... [2023-08-29 20:56:18,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:56:18,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:56:18,415 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-29 20:56:18,923 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] [2023-08-29 20:56:18,963 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:56:18,974 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-08-29 20:56:18,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@20780476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:56:18, skipping insertion in model container [2023-08-29 20:56:18,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:56:18,975 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-29 20:56:18,977 INFO L158 Benchmark]: Toolchain (without parser) took 771.80ms. Allocated memory is still 75.5MB. Free memory was 49.5MB in the beginning and 49.5MB in the end (delta: 37.8kB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2023-08-29 20:56:18,977 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 54.5MB. Free memory is still 31.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:56:18,978 INFO L158 Benchmark]: CACSL2BoogieTranslator took 766.98ms. Allocated memory is still 75.5MB. Free memory was 49.5MB in the beginning and 49.5MB in the end (delta: 37.8kB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2023-08-29 20:56:18,979 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 54.5MB. Free memory is still 31.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 766.98ms. Allocated memory is still 75.5MB. Free memory was 49.5MB in the beginning and 49.5MB in the end (delta: 37.8kB). Peak memory consumption was 19.3MB. 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 AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:56:20,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:56:20,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:56:20,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:56:20,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:56:20,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:56:20,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:56:20,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:56:20,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:56:20,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:56:20,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:56:20,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:56:20,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:56:20,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:56:20,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:56:20,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:56:20,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:56:20,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:56:20,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:56:20,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:56:20,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:56:20,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:56:20,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:56:20,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:56:20,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:56:20,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:56:20,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:56:20,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:56:20,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:56:20,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:56:20,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:56:20,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:56:20,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:56:20,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:56:20,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:56:20,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:56:20,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:56:20,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:56:20,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:56:20,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:56:20,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:56:20,669 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-29 20:56:20,699 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:56:20,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:56:20,700 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:56:20,700 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:56:20,701 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:56:20,701 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:56:20,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:56:20,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:56:20,702 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:56:20,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:56:20,703 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:56:20,703 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:56:20,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:56:20,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:56:20,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:56:20,704 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:56:20,704 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:56:20,704 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:56:20,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:56:20,704 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:56:20,704 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-29 20:56:20,705 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-29 20:56:20,705 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:56:20,705 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:56:20,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:56:20,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:56:20,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:56:20,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:56:20,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:56:20,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:56:20,706 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-29 20:56:20,706 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-29 20:56:20,706 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:56:20,707 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:56:20,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:56:20,707 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-29 20:56:20,707 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:56:20,707 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:56:20,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:56:20,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:56:20,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:56:20,996 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:56:20,996 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:56:20,998 INFO L432 ainManager$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 [2023-08-29 20:56:22,106 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:56:22,411 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:56:22,411 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i [2023-08-29 20:56:22,425 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c056bcd6c/0b0c21876752453cacce3c929b96cf2b/FLAG69979c8d5 [2023-08-29 20:56:22,438 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c056bcd6c/0b0c21876752453cacce3c929b96cf2b [2023-08-29 20:56:22,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:56:22,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:56:22,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:56:22,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:56:22,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:56:22,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:56:22" (1/1) ... [2023-08-29 20:56:22,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@463d84b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:56:22, skipping insertion in model container [2023-08-29 20:56:22,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:56:22" (1/1) ... [2023-08-29 20:56:22,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:56:22,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:56:22,611 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-29 20:56:23,011 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] [2023-08-29 20:56:23,070 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:56:23,089 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-29 20:56:23,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:56:23,111 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-29 20:56:23,144 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] [2023-08-29 20:56:23,169 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:56:23,176 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:56:23,185 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-29 20:56:23,215 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] [2023-08-29 20:56:23,240 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:56:23,370 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:56:23,370 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:56:23,371 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:56:23,376 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:56:23,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:56:23 WrapperNode [2023-08-29 20:56:23,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:56:23,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:56:23,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:56:23,378 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:56:23,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:56:23" (1/1) ... [2023-08-29 20:56:23,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:56:23" (1/1) ... [2023-08-29 20:56:23,454 INFO L138 Inliner]: procedures = 472, calls = 52, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 133 [2023-08-29 20:56:23,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:56:23,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:56:23,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:56:23,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:56:23,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:56:23" (1/1) ... [2023-08-29 20:56:23,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:56:23" (1/1) ... [2023-08-29 20:56:23,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:56:23" (1/1) ... [2023-08-29 20:56:23,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:56:23" (1/1) ... [2023-08-29 20:56:23,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:56:23" (1/1) ... [2023-08-29 20:56:23,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:56:23" (1/1) ... [2023-08-29 20:56:23,485 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:56:23" (1/1) ... [2023-08-29 20:56:23,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:56:23" (1/1) ... [2023-08-29 20:56:23,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:56:23,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:56:23,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:56:23,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:56:23,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:56:23" (1/1) ... [2023-08-29 20:56:23,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:56:23,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:56:23,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 20:56:23,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 20:56:23,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:56:23,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:56:23,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-29 20:56:23,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-29 20:56:23,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:56:23,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:56:23,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 20:56:23,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:56:23,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:56:23,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-29 20:56:23,588 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-29 20:56:23,588 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-29 20:56:23,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:56:23,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-29 20:56:23,589 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 20:56:23,951 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:56:23,954 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:56:24,387 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:56:24,402 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:56:24,402 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:56:24,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:56:24 BoogieIcfgContainer [2023-08-29 20:56:24,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:56:24,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:56:24,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:56:24,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:56:24,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:56:22" (1/3) ... [2023-08-29 20:56:24,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ad09b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:56:24, skipping insertion in model container [2023-08-29 20:56:24,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:56:23" (2/3) ... [2023-08-29 20:56:24,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ad09b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:56:24, skipping insertion in model container [2023-08-29 20:56:24,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:56:24" (3/3) ... [2023-08-29 20:56:24,411 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2023-08-29 20:56:24,424 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:56:24,425 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2023-08-29 20:56:24,425 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:56:24,499 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 20:56:24,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 212 transitions, 440 flow [2023-08-29 20:56:24,631 INFO L130 PetriNetUnfolder]: 10/262 cut-off events. [2023-08-29 20:56:24,631 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 20:56:24,637 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. [2023-08-29 20:56:24,638 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 212 transitions, 440 flow [2023-08-29 20:56:24,647 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 210 transitions, 432 flow [2023-08-29 20:56:24,652 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:56:24,667 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 208 places, 210 transitions, 432 flow [2023-08-29 20:56:24,673 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 208 places, 210 transitions, 432 flow [2023-08-29 20:56:24,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 210 transitions, 432 flow [2023-08-29 20:56:24,726 INFO L130 PetriNetUnfolder]: 10/262 cut-off events. [2023-08-29 20:56:24,727 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 20:56:24,728 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. [2023-08-29 20:56:24,732 INFO L119 LiptonReduction]: Number of co-enabled transitions 4260 [2023-08-29 20:57:42,606 WARN L222 SmtUtils]: Spent 6.17s 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) [2023-08-29 20:57:56,014 WARN L222 SmtUtils]: Spent 10.03s 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) [2023-08-29 20:58:03,288 WARN L222 SmtUtils]: Spent 7.27s 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) [2023-08-29 20:58:10,384 WARN L222 SmtUtils]: Spent 7.09s 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) [2023-08-29 20:58:20,572 WARN L222 SmtUtils]: Spent 6.49s 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) [2023-08-29 20:58:39,332 WARN L222 SmtUtils]: Spent 8.82s 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) [2023-08-29 20:59:38,707 WARN L222 SmtUtils]: Spent 55.34s 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) [2023-08-29 21:00:03,394 WARN L222 SmtUtils]: Spent 24.68s 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) [2023-08-29 21:01:11,631 WARN L222 SmtUtils]: Spent 1.14m 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) [2023-08-29 21:01:36,367 WARN L222 SmtUtils]: Spent 24.73s 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) [2023-08-29 21:01:48,454 WARN L222 SmtUtils]: Spent 12.06s 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) [2023-08-29 21:02:01,017 WARN L222 SmtUtils]: Spent 12.56s 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) [2023-08-29 21:02:11,936 WARN L222 SmtUtils]: Spent 10.92s 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) [2023-08-29 21:02:22,450 WARN L222 SmtUtils]: Spent 10.51s 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) [2023-08-29 21:03:59,152 WARN L222 SmtUtils]: Spent 1.61m 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) [2023-08-29 21:04:46,244 WARN L222 SmtUtils]: Spent 47.09s 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) [2023-08-29 21:06:31,202 WARN L222 SmtUtils]: Spent 1.75m 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) [2023-08-29 21:07:27,574 WARN L222 SmtUtils]: Spent 56.37s 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) [2023-08-29 21:07:27,663 INFO L134 LiptonReduction]: Checked pairs total: 17410 [2023-08-29 21:07:27,664 INFO L136 LiptonReduction]: Total number of compositions: 266 [2023-08-29 21:07:27,675 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 21:07:27,679 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;@36c1ba53, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 21:07:27,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-08-29 21:07:27,681 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 21:07:27,681 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:07:27,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:07:27,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 21:07:27,682 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)] === [2023-08-29 21:07:27,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:07:27,686 INFO L85 PathProgramCache]: Analyzing trace with hash 762, now seen corresponding path program 1 times [2023-08-29 21:07:27,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:07:27,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73483376] [2023-08-29 21:07:27,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:07:27,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:27,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:07:27,705 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:07:27,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-29 21:07:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:07:27,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-29 21:07:27,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:07:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:07:27,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:07:27,828 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:07:27,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73483376] [2023-08-29 21:07:27,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73483376] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:07:27,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:07:27,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 21:07:27,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353676932] [2023-08-29 21:07:27,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:07:27,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 21:07:27,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:07:27,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 21:07:27,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 21:07:27,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 478 [2023-08-29 21:07:27,859 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) [2023-08-29 21:07:27,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:07:27,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 478 [2023-08-29 21:07:27,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:07:29,459 INFO L130 PetriNetUnfolder]: 1026/2094 cut-off events. [2023-08-29 21:07:29,459 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-29 21:07:29,463 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. [2023-08-29 21:07:29,478 INFO L137 encePairwiseOnDemand]: 460/478 looper letters, 44 selfloop transitions, 0 changer transitions 0/62 dead transitions. [2023-08-29 21:07:29,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 62 transitions, 224 flow [2023-08-29 21:07:29,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 21:07:29,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 21:07:29,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 450 transitions. [2023-08-29 21:07:29,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4707112970711297 [2023-08-29 21:07:29,504 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 450 transitions. [2023-08-29 21:07:29,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 450 transitions. [2023-08-29 21:07:29,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:07:29,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 450 transitions. [2023-08-29 21:07:29,515 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) [2023-08-29 21:07:29,519 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) [2023-08-29 21:07:29,520 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) [2023-08-29 21:07:29,522 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 172 flow. Second operand 2 states and 450 transitions. [2023-08-29 21:07:29,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 62 transitions, 224 flow [2023-08-29 21:07:29,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 216 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 21:07:29,531 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 128 flow [2023-08-29 21:07:29,533 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} [2023-08-29 21:07:29,537 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -18 predicate places. [2023-08-29 21:07:29,538 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 128 flow [2023-08-29 21:07:29,538 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) [2023-08-29 21:07:29,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:07:29,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 21:07:29,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-08-29 21:07:29,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:29,749 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)] === [2023-08-29 21:07:29,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:07:29,749 INFO L85 PathProgramCache]: Analyzing trace with hash 24758, now seen corresponding path program 1 times [2023-08-29 21:07:29,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:07:29,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503319974] [2023-08-29 21:07:29,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:07:29,750 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:29,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:07:29,752 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:07:29,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-29 21:07:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:07:29,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 21:07:29,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:07:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:07:29,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:07:29,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:07:29,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503319974] [2023-08-29 21:07:29,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503319974] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:07:29,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:07:29,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:07:29,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614973906] [2023-08-29 21:07:29,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:07:29,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:07:29,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:07:29,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:07:29,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:07:29,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 478 [2023-08-29 21:07:29,974 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) [2023-08-29 21:07:29,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:07:29,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 478 [2023-08-29 21:07:29,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:07:32,164 INFO L130 PetriNetUnfolder]: 1026/2054 cut-off events. [2023-08-29 21:07:32,165 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 21:07:32,167 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. [2023-08-29 21:07:32,177 INFO L137 encePairwiseOnDemand]: 473/478 looper letters, 43 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-08-29 21:07:32,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 220 flow [2023-08-29 21:07:32,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:07:32,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:07:32,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 621 transitions. [2023-08-29 21:07:32,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4330543933054393 [2023-08-29 21:07:32,181 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 621 transitions. [2023-08-29 21:07:32,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 621 transitions. [2023-08-29 21:07:32,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:07:32,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 621 transitions. [2023-08-29 21:07:32,184 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) [2023-08-29 21:07:32,189 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) [2023-08-29 21:07:32,190 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) [2023-08-29 21:07:32,190 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 128 flow. Second operand 3 states and 621 transitions. [2023-08-29 21:07:32,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 220 flow [2023-08-29 21:07:32,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 63 transitions, 220 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 21:07:32,192 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 144 flow [2023-08-29 21:07:32,192 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} [2023-08-29 21:07:32,193 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -15 predicate places. [2023-08-29 21:07:32,193 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 144 flow [2023-08-29 21:07:32,194 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) [2023-08-29 21:07:32,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:07:32,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:07:32,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-08-29 21:07:32,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:32,401 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)] === [2023-08-29 21:07:32,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:07:32,402 INFO L85 PathProgramCache]: Analyzing trace with hash 764167, now seen corresponding path program 1 times [2023-08-29 21:07:32,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:07:32,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824682390] [2023-08-29 21:07:32,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:07:32,403 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:32,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:07:32,404 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:07:32,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-29 21:07:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:07:32,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 21:07:32,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:07:32,662 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-29 21:07:32,663 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 [2023-08-29 21:07:32,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:07:32,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:07:32,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:07:32,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824682390] [2023-08-29 21:07:32,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824682390] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:07:32,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:07:32,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:07:32,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114089889] [2023-08-29 21:07:32,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:07:32,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:07:32,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:07:32,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:07:32,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:07:33,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 478 [2023-08-29 21:07:33,019 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) [2023-08-29 21:07:33,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:07:33,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 478 [2023-08-29 21:07:33,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:07:34,386 INFO L130 PetriNetUnfolder]: 1016/2041 cut-off events. [2023-08-29 21:07:34,386 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2023-08-29 21:07:34,388 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. [2023-08-29 21:07:34,395 INFO L137 encePairwiseOnDemand]: 467/478 looper letters, 54 selfloop transitions, 9 changer transitions 0/81 dead transitions. [2023-08-29 21:07:34,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 306 flow [2023-08-29 21:07:34,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:07:34,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:07:34,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 634 transitions. [2023-08-29 21:07:34,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421199442119944 [2023-08-29 21:07:34,398 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 634 transitions. [2023-08-29 21:07:34,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 634 transitions. [2023-08-29 21:07:34,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:07:34,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 634 transitions. [2023-08-29 21:07:34,400 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) [2023-08-29 21:07:34,403 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) [2023-08-29 21:07:34,403 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) [2023-08-29 21:07:34,403 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 144 flow. Second operand 3 states and 634 transitions. [2023-08-29 21:07:34,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 306 flow [2023-08-29 21:07:34,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 304 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:07:34,405 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 169 flow [2023-08-29 21:07:34,405 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} [2023-08-29 21:07:34,406 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -15 predicate places. [2023-08-29 21:07:34,406 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 169 flow [2023-08-29 21:07:34,406 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) [2023-08-29 21:07:34,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:07:34,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:07:34,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-29 21:07:34,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:34,607 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)] === [2023-08-29 21:07:34,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:07:34,608 INFO L85 PathProgramCache]: Analyzing trace with hash 764168, now seen corresponding path program 1 times [2023-08-29 21:07:34,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:07:34,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109652730] [2023-08-29 21:07:34,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:07:34,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:34,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:07:34,611 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:07:34,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-29 21:07:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:07:34,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-29 21:07:34,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:07:34,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:07:34,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:07:34,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:07:34,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:07:34,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:07:34,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109652730] [2023-08-29 21:07:34,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [109652730] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:07:34,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:07:34,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:07:34,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952532583] [2023-08-29 21:07:34,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:07:34,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:07:34,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:07:34,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:07:34,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:07:35,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 478 [2023-08-29 21:07:35,141 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) [2023-08-29 21:07:35,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:07:35,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 478 [2023-08-29 21:07:35,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:07:36,359 INFO L130 PetriNetUnfolder]: 1006/2015 cut-off events. [2023-08-29 21:07:36,359 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-08-29 21:07:36,361 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. [2023-08-29 21:07:36,370 INFO L137 encePairwiseOnDemand]: 474/478 looper letters, 40 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-08-29 21:07:36,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 60 transitions, 249 flow [2023-08-29 21:07:36,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:07:36,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:07:36,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 615 transitions. [2023-08-29 21:07:36,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42887029288702927 [2023-08-29 21:07:36,379 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 615 transitions. [2023-08-29 21:07:36,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 615 transitions. [2023-08-29 21:07:36,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:07:36,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 615 transitions. [2023-08-29 21:07:36,382 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) [2023-08-29 21:07:36,385 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) [2023-08-29 21:07:36,386 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) [2023-08-29 21:07:36,386 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 169 flow. Second operand 3 states and 615 transitions. [2023-08-29 21:07:36,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 60 transitions, 249 flow [2023-08-29 21:07:36,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:07:36,390 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 160 flow [2023-08-29 21:07:36,390 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} [2023-08-29 21:07:36,390 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -16 predicate places. [2023-08-29 21:07:36,391 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 160 flow [2023-08-29 21:07:36,391 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) [2023-08-29 21:07:36,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:07:36,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:07:36,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-29 21:07:36,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:36,592 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)] === [2023-08-29 21:07:36,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:07:36,592 INFO L85 PathProgramCache]: Analyzing trace with hash 764184, now seen corresponding path program 1 times [2023-08-29 21:07:36,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:07:36,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123442866] [2023-08-29 21:07:36,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:07:36,594 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:36,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:07:36,595 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:07:36,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-29 21:07:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:07:36,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-29 21:07:36,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:07:36,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 21:07:36,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:07:36,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:07:36,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:07:36,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123442866] [2023-08-29 21:07:36,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123442866] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:07:36,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:07:36,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:07:36,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224744996] [2023-08-29 21:07:36,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:07:36,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:07:36,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:07:36,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:07:36,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:07:37,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 478 [2023-08-29 21:07:37,025 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) [2023-08-29 21:07:37,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:07:37,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 478 [2023-08-29 21:07:37,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:07:38,694 INFO L130 PetriNetUnfolder]: 747/1578 cut-off events. [2023-08-29 21:07:38,694 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-08-29 21:07:38,696 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. [2023-08-29 21:07:38,707 INFO L137 encePairwiseOnDemand]: 466/478 looper letters, 51 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2023-08-29 21:07:38,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 79 transitions, 322 flow [2023-08-29 21:07:38,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:07:38,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:07:38,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 632 transitions. [2023-08-29 21:07:38,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407252440725244 [2023-08-29 21:07:38,712 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 632 transitions. [2023-08-29 21:07:38,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 632 transitions. [2023-08-29 21:07:38,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:07:38,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 632 transitions. [2023-08-29 21:07:38,715 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) [2023-08-29 21:07:38,717 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) [2023-08-29 21:07:38,718 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) [2023-08-29 21:07:38,718 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 160 flow. Second operand 3 states and 632 transitions. [2023-08-29 21:07:38,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 79 transitions, 322 flow [2023-08-29 21:07:38,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 79 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:07:38,723 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 216 flow [2023-08-29 21:07:38,723 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} [2023-08-29 21:07:38,725 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -13 predicate places. [2023-08-29 21:07:38,725 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 216 flow [2023-08-29 21:07:38,725 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) [2023-08-29 21:07:38,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:07:38,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:07:38,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-29 21:07:38,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:38,940 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)] === [2023-08-29 21:07:38,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:07:38,941 INFO L85 PathProgramCache]: Analyzing trace with hash 765980, now seen corresponding path program 1 times [2023-08-29 21:07:38,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:07:38,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151115446] [2023-08-29 21:07:38,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:07:38,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:38,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:07:38,942 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:07:38,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-29 21:07:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:07:39,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 21:07:39,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:07:39,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-29 21:07:39,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:07:39,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:07:39,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:07:39,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151115446] [2023-08-29 21:07:39,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151115446] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:07:39,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:07:39,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:07:39,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270534522] [2023-08-29 21:07:39,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:07:39,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:07:39,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:07:39,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:07:39,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:07:39,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 478 [2023-08-29 21:07:39,421 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) [2023-08-29 21:07:39,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:07:39,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 478 [2023-08-29 21:07:39,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:07:40,362 INFO L130 PetriNetUnfolder]: 627/1391 cut-off events. [2023-08-29 21:07:40,362 INFO L131 PetriNetUnfolder]: For 306/306 co-relation queries the response was YES. [2023-08-29 21:07:40,364 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. [2023-08-29 21:07:40,368 INFO L137 encePairwiseOnDemand]: 468/478 looper letters, 53 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2023-08-29 21:07:40,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 77 transitions, 368 flow [2023-08-29 21:07:40,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:07:40,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:07:40,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 612 transitions. [2023-08-29 21:07:40,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42677824267782427 [2023-08-29 21:07:40,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 612 transitions. [2023-08-29 21:07:40,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 612 transitions. [2023-08-29 21:07:40,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:07:40,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 612 transitions. [2023-08-29 21:07:40,373 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) [2023-08-29 21:07:40,376 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) [2023-08-29 21:07:40,376 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) [2023-08-29 21:07:40,377 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 216 flow. Second operand 3 states and 612 transitions. [2023-08-29 21:07:40,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 77 transitions, 368 flow [2023-08-29 21:07:40,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 77 transitions, 348 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:07:40,379 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 225 flow [2023-08-29 21:07:40,380 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} [2023-08-29 21:07:40,380 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2023-08-29 21:07:40,380 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 225 flow [2023-08-29 21:07:40,381 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) [2023-08-29 21:07:40,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:07:40,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:07:40,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-08-29 21:07:40,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:40,585 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)] === [2023-08-29 21:07:40,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:07:40,585 INFO L85 PathProgramCache]: Analyzing trace with hash 765979, now seen corresponding path program 1 times [2023-08-29 21:07:40,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:07:40,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533581968] [2023-08-29 21:07:40,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:07:40,586 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:40,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:07:40,587 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:07:40,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-08-29 21:07:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:07:40,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 21:07:40,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:07:40,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 21:07:40,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:07:40,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:07:40,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:07:40,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533581968] [2023-08-29 21:07:40,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533581968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:07:40,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:07:40,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:07:40,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594146347] [2023-08-29 21:07:40,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:07:40,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:07:40,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:07:40,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:07:40,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:07:40,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 478 [2023-08-29 21:07:40,993 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) [2023-08-29 21:07:40,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:07:40,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 478 [2023-08-29 21:07:40,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:07:42,189 INFO L130 PetriNetUnfolder]: 627/1375 cut-off events. [2023-08-29 21:07:42,189 INFO L131 PetriNetUnfolder]: For 339/339 co-relation queries the response was YES. [2023-08-29 21:07:42,192 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. [2023-08-29 21:07:42,196 INFO L137 encePairwiseOnDemand]: 471/478 looper letters, 46 selfloop transitions, 7 changer transitions 0/69 dead transitions. [2023-08-29 21:07:42,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 347 flow [2023-08-29 21:07:42,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:07:42,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:07:42,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 581 transitions. [2023-08-29 21:07:42,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405160390516039 [2023-08-29 21:07:42,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 581 transitions. [2023-08-29 21:07:42,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 581 transitions. [2023-08-29 21:07:42,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:07:42,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 581 transitions. [2023-08-29 21:07:42,203 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) [2023-08-29 21:07:42,205 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) [2023-08-29 21:07:42,205 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) [2023-08-29 21:07:42,205 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 225 flow. Second operand 3 states and 581 transitions. [2023-08-29 21:07:42,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 347 flow [2023-08-29 21:07:42,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 69 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:07:42,208 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 218 flow [2023-08-29 21:07:42,208 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} [2023-08-29 21:07:42,209 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -14 predicate places. [2023-08-29 21:07:42,209 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 218 flow [2023-08-29 21:07:42,209 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) [2023-08-29 21:07:42,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:07:42,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:07:42,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-08-29 21:07:42,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:42,421 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)] === [2023-08-29 21:07:42,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:07:42,421 INFO L85 PathProgramCache]: Analyzing trace with hash 764185, now seen corresponding path program 1 times [2023-08-29 21:07:42,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:07:42,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917898687] [2023-08-29 21:07:42,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:07:42,422 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:42,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:07:42,424 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:07:42,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-08-29 21:07:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:07:42,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-29 21:07:42,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:07:42,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-29 21:07:42,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:07:42,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:07:42,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:07:42,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917898687] [2023-08-29 21:07:42,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917898687] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:07:42,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:07:42,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:07:42,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507676974] [2023-08-29 21:07:42,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:07:42,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:07:42,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:07:42,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:07:42,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:07:42,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 478 [2023-08-29 21:07:42,891 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) [2023-08-29 21:07:42,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:07:42,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 478 [2023-08-29 21:07:42,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:07:44,389 INFO L130 PetriNetUnfolder]: 387/890 cut-off events. [2023-08-29 21:07:44,389 INFO L131 PetriNetUnfolder]: For 223/223 co-relation queries the response was YES. [2023-08-29 21:07:44,391 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. [2023-08-29 21:07:44,394 INFO L137 encePairwiseOnDemand]: 472/478 looper letters, 51 selfloop transitions, 4 changer transitions 1/73 dead transitions. [2023-08-29 21:07:44,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 73 transitions, 358 flow [2023-08-29 21:07:44,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:07:44,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:07:44,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 628 transitions. [2023-08-29 21:07:44,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43793584379358436 [2023-08-29 21:07:44,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 628 transitions. [2023-08-29 21:07:44,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 628 transitions. [2023-08-29 21:07:44,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:07:44,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 628 transitions. [2023-08-29 21:07:44,401 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) [2023-08-29 21:07:44,402 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) [2023-08-29 21:07:44,403 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) [2023-08-29 21:07:44,403 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 218 flow. Second operand 3 states and 628 transitions. [2023-08-29 21:07:44,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 73 transitions, 358 flow [2023-08-29 21:07:44,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 73 transitions, 344 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:07:44,406 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 220 flow [2023-08-29 21:07:44,406 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} [2023-08-29 21:07:44,406 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -13 predicate places. [2023-08-29 21:07:44,406 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 220 flow [2023-08-29 21:07:44,407 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) [2023-08-29 21:07:44,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:07:44,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 21:07:44,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-08-29 21:07:44,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:44,630 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)] === [2023-08-29 21:07:44,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:07:44,630 INFO L85 PathProgramCache]: Analyzing trace with hash 23690237, now seen corresponding path program 1 times [2023-08-29 21:07:44,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:07:44,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894296717] [2023-08-29 21:07:44,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:07:44,631 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:44,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:07:44,632 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:07:44,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-08-29 21:07:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:07:44,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-29 21:07:44,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:07:44,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-29 21:07:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:07:44,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:07:44,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:07:44,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894296717] [2023-08-29 21:07:44,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894296717] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:07:44,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:07:44,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:07:44,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484393028] [2023-08-29 21:07:44,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:07:44,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:07:44,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:07:44,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:07:44,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:07:45,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-08-29 21:07:45,241 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) [2023-08-29 21:07:45,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:07:45,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-08-29 21:07:45,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:07:47,262 INFO L130 PetriNetUnfolder]: 411/923 cut-off events. [2023-08-29 21:07:47,262 INFO L131 PetriNetUnfolder]: For 251/251 co-relation queries the response was YES. [2023-08-29 21:07:47,264 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. [2023-08-29 21:07:47,268 INFO L137 encePairwiseOnDemand]: 470/478 looper letters, 66 selfloop transitions, 10 changer transitions 1/92 dead transitions. [2023-08-29 21:07:47,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 92 transitions, 475 flow [2023-08-29 21:07:47,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:07:47,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:07:47,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 819 transitions. [2023-08-29 21:07:47,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428347280334728 [2023-08-29 21:07:47,273 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 819 transitions. [2023-08-29 21:07:47,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 819 transitions. [2023-08-29 21:07:47,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:07:47,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 819 transitions. [2023-08-29 21:07:47,275 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) [2023-08-29 21:07:47,278 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) [2023-08-29 21:07:47,278 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) [2023-08-29 21:07:47,278 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 220 flow. Second operand 4 states and 819 transitions. [2023-08-29 21:07:47,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 92 transitions, 475 flow [2023-08-29 21:07:47,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 92 transitions, 468 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:07:47,282 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 283 flow [2023-08-29 21:07:47,282 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} [2023-08-29 21:07:47,283 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -9 predicate places. [2023-08-29 21:07:47,283 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 283 flow [2023-08-29 21:07:47,284 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) [2023-08-29 21:07:47,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:07:47,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 21:07:47,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-08-29 21:07:47,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:47,496 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)] === [2023-08-29 21:07:47,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:07:47,496 INFO L85 PathProgramCache]: Analyzing trace with hash 23690236, now seen corresponding path program 1 times [2023-08-29 21:07:47,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:07:47,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839979819] [2023-08-29 21:07:47,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:07:47,497 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:47,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:07:47,498 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:07:47,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-08-29 21:07:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:07:47,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 21:07:47,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:07:47,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:07:47,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:07:47,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:07:47,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839979819] [2023-08-29 21:07:47,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839979819] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:07:47,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:07:47,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:07:47,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187954935] [2023-08-29 21:07:47,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:07:47,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:07:47,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:07:47,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:07:47,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:07:47,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 478 [2023-08-29 21:07:47,880 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) [2023-08-29 21:07:47,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:07:47,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 478 [2023-08-29 21:07:47,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:07:50,335 INFO L130 PetriNetUnfolder]: 458/1007 cut-off events. [2023-08-29 21:07:50,335 INFO L131 PetriNetUnfolder]: For 562/562 co-relation queries the response was YES. [2023-08-29 21:07:50,337 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. [2023-08-29 21:07:50,340 INFO L137 encePairwiseOnDemand]: 466/478 looper letters, 57 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2023-08-29 21:07:50,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 84 transitions, 475 flow [2023-08-29 21:07:50,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:07:50,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:07:50,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2023-08-29 21:07:50,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4316596931659693 [2023-08-29 21:07:50,344 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2023-08-29 21:07:50,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2023-08-29 21:07:50,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:07:50,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2023-08-29 21:07:50,346 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) [2023-08-29 21:07:50,348 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) [2023-08-29 21:07:50,348 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) [2023-08-29 21:07:50,348 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 283 flow. Second operand 3 states and 619 transitions. [2023-08-29 21:07:50,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 84 transitions, 475 flow [2023-08-29 21:07:50,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 84 transitions, 461 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:07:50,352 INFO L231 Difference]: Finished difference. Result has 75 places, 68 transitions, 338 flow [2023-08-29 21:07:50,352 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} [2023-08-29 21:07:50,352 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -7 predicate places. [2023-08-29 21:07:50,353 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 68 transitions, 338 flow [2023-08-29 21:07:50,353 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) [2023-08-29 21:07:50,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:07:50,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 21:07:50,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-08-29 21:07:50,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:50,565 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)] === [2023-08-29 21:07:50,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:07:50,566 INFO L85 PathProgramCache]: Analyzing trace with hash 736149436, now seen corresponding path program 1 times [2023-08-29 21:07:50,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:07:50,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868830488] [2023-08-29 21:07:50,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:07:50,566 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:50,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:07:50,567 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:07:50,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-08-29 21:07:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:07:50,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 21:07:50,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:07:50,753 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 [2023-08-29 21:07:50,820 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 21:07:50,821 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 [2023-08-29 21:07:50,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:07:50,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:07:50,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:07:50,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868830488] [2023-08-29 21:07:50,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868830488] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:07:50,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:07:50,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:07:50,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167752621] [2023-08-29 21:07:50,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:07:50,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:07:50,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:07:50,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:07:50,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:07:51,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 478 [2023-08-29 21:07:51,610 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) [2023-08-29 21:07:51,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:07:51,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 478 [2023-08-29 21:07:51,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:07:53,488 INFO L130 PetriNetUnfolder]: 504/1169 cut-off events. [2023-08-29 21:07:53,488 INFO L131 PetriNetUnfolder]: For 1617/1635 co-relation queries the response was YES. [2023-08-29 21:07:53,490 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. [2023-08-29 21:07:53,494 INFO L137 encePairwiseOnDemand]: 469/478 looper letters, 51 selfloop transitions, 11 changer transitions 0/79 dead transitions. [2023-08-29 21:07:53,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 79 transitions, 516 flow [2023-08-29 21:07:53,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:07:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:07:53,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2023-08-29 21:07:53,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41143654114365413 [2023-08-29 21:07:53,497 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2023-08-29 21:07:53,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2023-08-29 21:07:53,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:07:53,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2023-08-29 21:07:53,498 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) [2023-08-29 21:07:53,499 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) [2023-08-29 21:07:53,500 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) [2023-08-29 21:07:53,500 INFO L175 Difference]: Start difference. First operand has 75 places, 68 transitions, 338 flow. Second operand 3 states and 590 transitions. [2023-08-29 21:07:53,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 79 transitions, 516 flow [2023-08-29 21:07:53,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 79 transitions, 488 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:07:53,503 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 414 flow [2023-08-29 21:07:53,503 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} [2023-08-29 21:07:53,504 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -5 predicate places. [2023-08-29 21:07:53,504 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 414 flow [2023-08-29 21:07:53,504 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) [2023-08-29 21:07:53,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:07:53,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 21:07:53,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-08-29 21:07:53,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:53,709 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)] === [2023-08-29 21:07:53,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:07:53,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1345796653, now seen corresponding path program 1 times [2023-08-29 21:07:53,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:07:53,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279671838] [2023-08-29 21:07:53,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:07:53,710 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:53,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:07:53,712 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:07:53,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-08-29 21:07:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:07:53,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 21:07:53,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:07:53,910 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:07:53,911 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:07:53,911 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:07:53,913 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 [2023-08-29 21:07:53,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:07:53,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:07:53,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:07:53,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279671838] [2023-08-29 21:07:53,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279671838] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:07:53,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:07:53,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:07:53,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813167641] [2023-08-29 21:07:53,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:07:53,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:07:53,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:07:53,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:07:53,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:07:54,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 478 [2023-08-29 21:07:54,413 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) [2023-08-29 21:07:54,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:07:54,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 478 [2023-08-29 21:07:54,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:07:56,653 INFO L130 PetriNetUnfolder]: 636/1379 cut-off events. [2023-08-29 21:07:56,653 INFO L131 PetriNetUnfolder]: For 2419/2437 co-relation queries the response was YES. [2023-08-29 21:07:56,656 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. [2023-08-29 21:07:56,660 INFO L137 encePairwiseOnDemand]: 470/478 looper letters, 60 selfloop transitions, 14 changer transitions 0/90 dead transitions. [2023-08-29 21:07:56,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 90 transitions, 670 flow [2023-08-29 21:07:56,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:07:56,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:07:56,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2023-08-29 21:07:56,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121338912133891 [2023-08-29 21:07:56,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2023-08-29 21:07:56,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2023-08-29 21:07:56,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:07:56,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2023-08-29 21:07:56,666 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) [2023-08-29 21:07:56,667 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) [2023-08-29 21:07:56,668 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) [2023-08-29 21:07:56,668 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 414 flow. Second operand 3 states and 591 transitions. [2023-08-29 21:07:56,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 90 transitions, 670 flow [2023-08-29 21:07:56,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 90 transitions, 634 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:07:56,673 INFO L231 Difference]: Finished difference. Result has 78 places, 85 transitions, 534 flow [2023-08-29 21:07:56,673 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} [2023-08-29 21:07:56,673 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -4 predicate places. [2023-08-29 21:07:56,673 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 85 transitions, 534 flow [2023-08-29 21:07:56,674 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) [2023-08-29 21:07:56,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:07:56,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 21:07:56,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-08-29 21:07:56,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:56,888 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)] === [2023-08-29 21:07:56,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:07:56,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1291002750, now seen corresponding path program 1 times [2023-08-29 21:07:56,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:07:56,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964215338] [2023-08-29 21:07:56,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:07:56,889 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:56,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:07:56,890 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:07:56,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-08-29 21:07:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:07:57,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-29 21:07:57,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:07:57,159 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-29 21:07:57,160 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 [2023-08-29 21:07:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:07:57,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:07:57,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:07:57,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964215338] [2023-08-29 21:07:57,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [964215338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:07:57,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:07:57,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:07:57,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742492013] [2023-08-29 21:07:57,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:07:57,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:07:57,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:07:57,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:07:57,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:07:57,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 478 [2023-08-29 21:07:57,456 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) [2023-08-29 21:07:57,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:07:57,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 478 [2023-08-29 21:07:57,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:07:58,821 INFO L130 PetriNetUnfolder]: 589/1305 cut-off events. [2023-08-29 21:07:58,821 INFO L131 PetriNetUnfolder]: For 2823/2835 co-relation queries the response was YES. [2023-08-29 21:07:58,823 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. [2023-08-29 21:07:58,828 INFO L137 encePairwiseOnDemand]: 468/478 looper letters, 60 selfloop transitions, 15 changer transitions 0/92 dead transitions. [2023-08-29 21:07:58,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 92 transitions, 718 flow [2023-08-29 21:07:58,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:07:58,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:07:58,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2023-08-29 21:07:58,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4316596931659693 [2023-08-29 21:07:58,834 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2023-08-29 21:07:58,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2023-08-29 21:07:58,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:07:58,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2023-08-29 21:07:58,835 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) [2023-08-29 21:07:58,837 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) [2023-08-29 21:07:58,838 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) [2023-08-29 21:07:58,838 INFO L175 Difference]: Start difference. First operand has 78 places, 85 transitions, 534 flow. Second operand 3 states and 619 transitions. [2023-08-29 21:07:58,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 92 transitions, 718 flow [2023-08-29 21:07:58,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 92 transitions, 704 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:07:58,842 INFO L231 Difference]: Finished difference. Result has 78 places, 83 transitions, 532 flow [2023-08-29 21:07:58,843 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} [2023-08-29 21:07:58,843 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -4 predicate places. [2023-08-29 21:07:58,843 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 83 transitions, 532 flow [2023-08-29 21:07:58,844 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) [2023-08-29 21:07:58,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:07:58,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 21:07:58,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-08-29 21:07:59,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:59,057 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)] === [2023-08-29 21:07:59,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:07:59,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1291002751, now seen corresponding path program 1 times [2023-08-29 21:07:59,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:07:59,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311608966] [2023-08-29 21:07:59,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:07:59,058 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:59,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:07:59,059 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:07:59,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-08-29 21:07:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:07:59,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 21:07:59,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:07:59,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:07:59,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:07:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:07:59,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:07:59,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:07:59,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311608966] [2023-08-29 21:07:59,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311608966] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:07:59,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:07:59,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:07:59,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053495215] [2023-08-29 21:07:59,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:07:59,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:07:59,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:07:59,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:07:59,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:07:59,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 478 [2023-08-29 21:07:59,557 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) [2023-08-29 21:07:59,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:07:59,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 478 [2023-08-29 21:07:59,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:08:00,342 INFO L130 PetriNetUnfolder]: 558/1235 cut-off events. [2023-08-29 21:08:00,342 INFO L131 PetriNetUnfolder]: For 2914/2930 co-relation queries the response was YES. [2023-08-29 21:08:00,344 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. [2023-08-29 21:08:00,348 INFO L137 encePairwiseOnDemand]: 475/478 looper letters, 62 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-08-29 21:08:00,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 81 transitions, 642 flow [2023-08-29 21:08:00,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:08:00,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:08:00,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-08-29 21:08:00,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42608089260808923 [2023-08-29 21:08:00,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-08-29 21:08:00,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-08-29 21:08:00,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:08:00,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-08-29 21:08:00,354 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) [2023-08-29 21:08:00,356 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) [2023-08-29 21:08:00,356 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) [2023-08-29 21:08:00,356 INFO L175 Difference]: Start difference. First operand has 78 places, 83 transitions, 532 flow. Second operand 3 states and 611 transitions. [2023-08-29 21:08:00,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 81 transitions, 642 flow [2023-08-29 21:08:00,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 81 transitions, 612 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:08:00,360 INFO L231 Difference]: Finished difference. Result has 77 places, 81 transitions, 488 flow [2023-08-29 21:08:00,360 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} [2023-08-29 21:08:00,361 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -5 predicate places. [2023-08-29 21:08:00,361 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 81 transitions, 488 flow [2023-08-29 21:08:00,361 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) [2023-08-29 21:08:00,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:08:00,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 21:08:00,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-08-29 21:08:00,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:00,575 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)] === [2023-08-29 21:08:00,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:08:00,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1291003930, now seen corresponding path program 1 times [2023-08-29 21:08:00,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:08:00,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645754502] [2023-08-29 21:08:00,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:08:00,576 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:00,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:08:00,577 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:08:00,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-08-29 21:08:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:08:00,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-29 21:08:00,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:08:00,758 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 [2023-08-29 21:08:00,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:08:00,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:08:00,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:08:00,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645754502] [2023-08-29 21:08:00,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645754502] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:08:00,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:08:00,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:08:00,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260027681] [2023-08-29 21:08:00,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:08:00,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:08:00,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:08:00,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:08:00,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:08:01,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-08-29 21:08:01,260 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) [2023-08-29 21:08:01,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:08:01,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-08-29 21:08:01,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:08:03,181 INFO L130 PetriNetUnfolder]: 570/1215 cut-off events. [2023-08-29 21:08:03,181 INFO L131 PetriNetUnfolder]: For 2749/2766 co-relation queries the response was YES. [2023-08-29 21:08:03,183 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. [2023-08-29 21:08:03,187 INFO L137 encePairwiseOnDemand]: 472/478 looper letters, 90 selfloop transitions, 11 changer transitions 1/117 dead transitions. [2023-08-29 21:08:03,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 117 transitions, 934 flow [2023-08-29 21:08:03,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:08:03,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:08:03,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 811 transitions. [2023-08-29 21:08:03,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42416317991631797 [2023-08-29 21:08:03,192 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 811 transitions. [2023-08-29 21:08:03,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 811 transitions. [2023-08-29 21:08:03,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:08:03,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 811 transitions. [2023-08-29 21:08:03,194 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) [2023-08-29 21:08:03,197 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) [2023-08-29 21:08:03,197 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) [2023-08-29 21:08:03,198 INFO L175 Difference]: Start difference. First operand has 77 places, 81 transitions, 488 flow. Second operand 4 states and 811 transitions. [2023-08-29 21:08:03,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 117 transitions, 934 flow [2023-08-29 21:08:03,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 117 transitions, 932 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:08:03,203 INFO L231 Difference]: Finished difference. Result has 81 places, 84 transitions, 557 flow [2023-08-29 21:08:03,203 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} [2023-08-29 21:08:03,203 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -1 predicate places. [2023-08-29 21:08:03,204 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 84 transitions, 557 flow [2023-08-29 21:08:03,204 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) [2023-08-29 21:08:03,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:08:03,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 21:08:03,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-08-29 21:08:03,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:03,417 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)] === [2023-08-29 21:08:03,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:08:03,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1291003929, now seen corresponding path program 1 times [2023-08-29 21:08:03,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:08:03,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814215116] [2023-08-29 21:08:03,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:08:03,418 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:03,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:08:03,419 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:08:03,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-08-29 21:08:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:08:03,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 21:08:03,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:08:03,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:08:03,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:08:03,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:08:03,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814215116] [2023-08-29 21:08:03,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814215116] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:08:03,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:08:03,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:08:03,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385900726] [2023-08-29 21:08:03,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:08:03,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:08:03,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:08:03,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:08:03,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:08:03,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 478 [2023-08-29 21:08:03,782 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) [2023-08-29 21:08:03,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:08:03,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 478 [2023-08-29 21:08:03,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:08:05,404 INFO L130 PetriNetUnfolder]: 641/1267 cut-off events. [2023-08-29 21:08:05,405 INFO L131 PetriNetUnfolder]: For 3540/3566 co-relation queries the response was YES. [2023-08-29 21:08:05,406 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. [2023-08-29 21:08:05,408 INFO L137 encePairwiseOnDemand]: 466/478 looper letters, 80 selfloop transitions, 20 changer transitions 0/115 dead transitions. [2023-08-29 21:08:05,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 115 transitions, 966 flow [2023-08-29 21:08:05,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:08:05,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:08:05,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 615 transitions. [2023-08-29 21:08:05,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42887029288702927 [2023-08-29 21:08:05,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 615 transitions. [2023-08-29 21:08:05,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 615 transitions. [2023-08-29 21:08:05,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:08:05,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 615 transitions. [2023-08-29 21:08:05,413 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) [2023-08-29 21:08:05,415 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) [2023-08-29 21:08:05,415 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) [2023-08-29 21:08:05,416 INFO L175 Difference]: Start difference. First operand has 81 places, 84 transitions, 557 flow. Second operand 3 states and 615 transitions. [2023-08-29 21:08:05,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 115 transitions, 966 flow [2023-08-29 21:08:05,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 115 transitions, 961 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:08:05,420 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 706 flow [2023-08-29 21:08:05,421 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} [2023-08-29 21:08:05,421 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 2 predicate places. [2023-08-29 21:08:05,421 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 706 flow [2023-08-29 21:08:05,421 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) [2023-08-29 21:08:05,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:08:05,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:08:05,436 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 (17)] Ended with exit code 0 [2023-08-29 21:08:05,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:05,634 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)] === [2023-08-29 21:08:05,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:08:05,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1366380303, now seen corresponding path program 1 times [2023-08-29 21:08:05,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:08:05,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107065156] [2023-08-29 21:08:05,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:08:05,635 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:05,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:08:05,636 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:08:05,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-08-29 21:08:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:08:05,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-29 21:08:05,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:08:05,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-29 21:08:05,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 21:08:05,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:08:05,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:08:05,929 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-29 21:08:05,929 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 [2023-08-29 21:08:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:08:05,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:08:05,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:08:05,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107065156] [2023-08-29 21:08:05,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2107065156] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:08:05,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:08:05,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:08:05,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093900030] [2023-08-29 21:08:05,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:08:05,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:08:05,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:08:05,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:08:05,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:08:06,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 478 [2023-08-29 21:08:06,439 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) [2023-08-29 21:08:06,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:08:06,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 478 [2023-08-29 21:08:06,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:08:07,761 INFO L130 PetriNetUnfolder]: 583/1169 cut-off events. [2023-08-29 21:08:07,761 INFO L131 PetriNetUnfolder]: For 5154/5192 co-relation queries the response was YES. [2023-08-29 21:08:07,763 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. [2023-08-29 21:08:07,766 INFO L137 encePairwiseOnDemand]: 466/478 looper letters, 65 selfloop transitions, 19 changer transitions 1/102 dead transitions. [2023-08-29 21:08:07,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 102 transitions, 932 flow [2023-08-29 21:08:07,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:08:07,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:08:07,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 810 transitions. [2023-08-29 21:08:07,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236401673640167 [2023-08-29 21:08:07,769 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 810 transitions. [2023-08-29 21:08:07,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 810 transitions. [2023-08-29 21:08:07,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:08:07,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 810 transitions. [2023-08-29 21:08:07,771 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) [2023-08-29 21:08:07,773 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) [2023-08-29 21:08:07,773 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) [2023-08-29 21:08:07,774 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 706 flow. Second operand 4 states and 810 transitions. [2023-08-29 21:08:07,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 102 transitions, 932 flow [2023-08-29 21:08:07,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 102 transitions, 883 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 21:08:07,780 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 691 flow [2023-08-29 21:08:07,780 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} [2023-08-29 21:08:07,780 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 0 predicate places. [2023-08-29 21:08:07,781 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 691 flow [2023-08-29 21:08:07,781 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) [2023-08-29 21:08:07,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:08:07,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:08:07,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-08-29 21:08:07,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:07,994 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)] === [2023-08-29 21:08:07,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:08:07,995 INFO L85 PathProgramCache]: Analyzing trace with hash -432987915, now seen corresponding path program 1 times [2023-08-29 21:08:07,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:08:07,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741063270] [2023-08-29 21:08:07,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:08:07,996 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:07,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:08:07,997 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:08:08,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-08-29 21:08:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:08:08,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 21:08:08,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:08:08,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-29 21:08:08,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:08:08,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:08:08,332 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-29 21:08:08,332 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 [2023-08-29 21:08:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:08:08,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:08:08,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:08:08,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741063270] [2023-08-29 21:08:08,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741063270] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:08:08,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:08:08,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:08:08,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062803867] [2023-08-29 21:08:08,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:08:08,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:08:08,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:08:08,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:08:08,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:08:08,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 478 [2023-08-29 21:08:08,983 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) [2023-08-29 21:08:08,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:08:08,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 478 [2023-08-29 21:08:08,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:08:10,915 INFO L130 PetriNetUnfolder]: 648/1318 cut-off events. [2023-08-29 21:08:10,915 INFO L131 PetriNetUnfolder]: For 4854/4884 co-relation queries the response was YES. [2023-08-29 21:08:10,917 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. [2023-08-29 21:08:10,919 INFO L137 encePairwiseOnDemand]: 463/478 looper letters, 108 selfloop transitions, 25 changer transitions 2/148 dead transitions. [2023-08-29 21:08:10,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 148 transitions, 1328 flow [2023-08-29 21:08:10,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 21:08:10,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 21:08:10,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1351 transitions. [2023-08-29 21:08:10,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40376569037656906 [2023-08-29 21:08:10,923 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1351 transitions. [2023-08-29 21:08:10,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1351 transitions. [2023-08-29 21:08:10,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:08:10,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1351 transitions. [2023-08-29 21:08:10,926 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) [2023-08-29 21:08:10,929 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) [2023-08-29 21:08:10,930 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) [2023-08-29 21:08:10,930 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 691 flow. Second operand 7 states and 1351 transitions. [2023-08-29 21:08:10,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 148 transitions, 1328 flow [2023-08-29 21:08:10,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 148 transitions, 1300 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:08:10,936 INFO L231 Difference]: Finished difference. Result has 87 places, 94 transitions, 805 flow [2023-08-29 21:08:10,936 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} [2023-08-29 21:08:10,937 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 5 predicate places. [2023-08-29 21:08:10,937 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 94 transitions, 805 flow [2023-08-29 21:08:10,937 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) [2023-08-29 21:08:10,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:08:10,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:08:10,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-08-29 21:08:11,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:11,151 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)] === [2023-08-29 21:08:11,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:08:11,152 INFO L85 PathProgramCache]: Analyzing trace with hash -590582320, now seen corresponding path program 1 times [2023-08-29 21:08:11,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:08:11,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653314864] [2023-08-29 21:08:11,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:08:11,153 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:11,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:08:11,154 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:08:11,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-08-29 21:08:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:08:11,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 21:08:11,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:08:11,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-29 21:08:11,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:08:11,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:08:11,447 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-29 21:08:11,447 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 [2023-08-29 21:08:11,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:08:11,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:08:11,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:08:11,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653314864] [2023-08-29 21:08:11,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653314864] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:08:11,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:08:11,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:08:11,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481470435] [2023-08-29 21:08:11,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:08:11,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:08:11,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:08:11,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:08:11,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:08:11,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 478 [2023-08-29 21:08:11,952 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) [2023-08-29 21:08:11,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:08:11,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 478 [2023-08-29 21:08:11,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:08:15,019 INFO L130 PetriNetUnfolder]: 676/1454 cut-off events. [2023-08-29 21:08:15,019 INFO L131 PetriNetUnfolder]: For 5731/5762 co-relation queries the response was YES. [2023-08-29 21:08:15,022 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. [2023-08-29 21:08:15,024 INFO L137 encePairwiseOnDemand]: 463/478 looper letters, 112 selfloop transitions, 31 changer transitions 2/158 dead transitions. [2023-08-29 21:08:15,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 158 transitions, 1555 flow [2023-08-29 21:08:15,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 21:08:15,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 21:08:15,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1349 transitions. [2023-08-29 21:08:15,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4031679617453676 [2023-08-29 21:08:15,027 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1349 transitions. [2023-08-29 21:08:15,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1349 transitions. [2023-08-29 21:08:15,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:08:15,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1349 transitions. [2023-08-29 21:08:15,029 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) [2023-08-29 21:08:15,033 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) [2023-08-29 21:08:15,033 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) [2023-08-29 21:08:15,033 INFO L175 Difference]: Start difference. First operand has 87 places, 94 transitions, 805 flow. Second operand 7 states and 1349 transitions. [2023-08-29 21:08:15,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 158 transitions, 1555 flow [2023-08-29 21:08:15,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 158 transitions, 1521 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 21:08:15,040 INFO L231 Difference]: Finished difference. Result has 91 places, 106 transitions, 1039 flow [2023-08-29 21:08:15,040 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} [2023-08-29 21:08:15,041 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 9 predicate places. [2023-08-29 21:08:15,041 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 106 transitions, 1039 flow [2023-08-29 21:08:15,041 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) [2023-08-29 21:08:15,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:08:15,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:08:15,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-08-29 21:08:15,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:15,255 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)] === [2023-08-29 21:08:15,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:08:15,256 INFO L85 PathProgramCache]: Analyzing trace with hash -591883065, now seen corresponding path program 2 times [2023-08-29 21:08:15,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:08:15,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590573645] [2023-08-29 21:08:15,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 21:08:15,257 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:15,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:08:15,258 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:08:15,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-08-29 21:08:15,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 21:08:15,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:08:15,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-29 21:08:15,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:08:15,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-29 21:08:15,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 21:08:15,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:08:15,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:08:15,590 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-29 21:08:15,590 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 [2023-08-29 21:08:15,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:08:15,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:08:15,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:08:15,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590573645] [2023-08-29 21:08:15,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590573645] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:08:15,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:08:15,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:08:15,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520030961] [2023-08-29 21:08:15,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:08:15,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:08:15,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:08:15,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:08:15,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:08:16,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 478 [2023-08-29 21:08:16,069 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) [2023-08-29 21:08:16,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:08:16,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 478 [2023-08-29 21:08:16,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:08:18,034 INFO L130 PetriNetUnfolder]: 610/1316 cut-off events. [2023-08-29 21:08:18,034 INFO L131 PetriNetUnfolder]: For 5836/5881 co-relation queries the response was YES. [2023-08-29 21:08:18,036 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. [2023-08-29 21:08:18,039 INFO L137 encePairwiseOnDemand]: 464/478 looper letters, 93 selfloop transitions, 46 changer transitions 2/156 dead transitions. [2023-08-29 21:08:18,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 156 transitions, 1605 flow [2023-08-29 21:08:18,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 21:08:18,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 21:08:18,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1196 transitions. [2023-08-29 21:08:18,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41701534170153415 [2023-08-29 21:08:18,042 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1196 transitions. [2023-08-29 21:08:18,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1196 transitions. [2023-08-29 21:08:18,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:08:18,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1196 transitions. [2023-08-29 21:08:18,043 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) [2023-08-29 21:08:18,046 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) [2023-08-29 21:08:18,046 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) [2023-08-29 21:08:18,046 INFO L175 Difference]: Start difference. First operand has 91 places, 106 transitions, 1039 flow. Second operand 6 states and 1196 transitions. [2023-08-29 21:08:18,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 156 transitions, 1605 flow [2023-08-29 21:08:18,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 156 transitions, 1567 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 21:08:18,053 INFO L231 Difference]: Finished difference. Result has 90 places, 105 transitions, 1102 flow [2023-08-29 21:08:18,053 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} [2023-08-29 21:08:18,054 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 8 predicate places. [2023-08-29 21:08:18,054 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 105 transitions, 1102 flow [2023-08-29 21:08:18,054 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) [2023-08-29 21:08:18,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:08:18,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:08:18,070 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 (21)] Ended with exit code 0 [2023-08-29 21:08:18,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:18,268 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)] === [2023-08-29 21:08:18,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:08:18,268 INFO L85 PathProgramCache]: Analyzing trace with hash -591882460, now seen corresponding path program 2 times [2023-08-29 21:08:18,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:08:18,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267422018] [2023-08-29 21:08:18,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 21:08:18,269 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:18,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:08:18,270 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:08:18,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-08-29 21:08:18,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 21:08:18,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:08:18,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-29 21:08:18,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:08:18,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 21:08:18,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-29 21:08:18,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:08:18,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:08:18,566 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-29 21:08:18,567 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 [2023-08-29 21:08:18,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:08:18,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:08:18,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:08:18,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267422018] [2023-08-29 21:08:18,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267422018] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:08:18,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:08:18,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:08:18,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245312118] [2023-08-29 21:08:18,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:08:18,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:08:18,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:08:18,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:08:18,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:08:19,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 478 [2023-08-29 21:08:19,038 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) [2023-08-29 21:08:19,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:08:19,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 478 [2023-08-29 21:08:19,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:08:20,856 INFO L130 PetriNetUnfolder]: 610/1305 cut-off events. [2023-08-29 21:08:20,856 INFO L131 PetriNetUnfolder]: For 5758/5803 co-relation queries the response was YES. [2023-08-29 21:08:20,858 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. [2023-08-29 21:08:20,861 INFO L137 encePairwiseOnDemand]: 464/478 looper letters, 91 selfloop transitions, 47 changer transitions 2/153 dead transitions. [2023-08-29 21:08:20,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 153 transitions, 1656 flow [2023-08-29 21:08:20,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 21:08:20,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 21:08:20,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1194 transitions. [2023-08-29 21:08:20,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41631799163179917 [2023-08-29 21:08:20,864 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1194 transitions. [2023-08-29 21:08:20,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1194 transitions. [2023-08-29 21:08:20,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:08:20,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1194 transitions. [2023-08-29 21:08:20,866 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) [2023-08-29 21:08:20,867 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) [2023-08-29 21:08:20,868 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) [2023-08-29 21:08:20,868 INFO L175 Difference]: Start difference. First operand has 90 places, 105 transitions, 1102 flow. Second operand 6 states and 1194 transitions. [2023-08-29 21:08:20,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 153 transitions, 1656 flow [2023-08-29 21:08:20,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 153 transitions, 1570 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-29 21:08:20,874 INFO L231 Difference]: Finished difference. Result has 89 places, 104 transitions, 1110 flow [2023-08-29 21:08:20,874 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} [2023-08-29 21:08:20,874 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 7 predicate places. [2023-08-29 21:08:20,875 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 104 transitions, 1110 flow [2023-08-29 21:08:20,875 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) [2023-08-29 21:08:20,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:08:20,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:08:20,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-08-29 21:08:21,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:21,089 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)] === [2023-08-29 21:08:21,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:08:21,089 INFO L85 PathProgramCache]: Analyzing trace with hash 525305147, now seen corresponding path program 1 times [2023-08-29 21:08:21,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:08:21,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614929940] [2023-08-29 21:08:21,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:08:21,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:21,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:08:21,092 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:08:21,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-08-29 21:08:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:08:21,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 21:08:21,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:08:21,456 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 [2023-08-29 21:08:21,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:08:21,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:08:21,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:08:21,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614929940] [2023-08-29 21:08:21,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614929940] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:08:21,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:08:21,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:08:21,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634039239] [2023-08-29 21:08:21,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:08:21,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:08:21,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:08:21,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:08:21,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-08-29 21:08:21,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 478 [2023-08-29 21:08:21,459 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) [2023-08-29 21:08:21,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:08:21,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 478 [2023-08-29 21:08:21,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:08:23,175 INFO L130 PetriNetUnfolder]: 972/1894 cut-off events. [2023-08-29 21:08:23,176 INFO L131 PetriNetUnfolder]: For 7439/7439 co-relation queries the response was YES. [2023-08-29 21:08:23,179 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. [2023-08-29 21:08:23,182 INFO L137 encePairwiseOnDemand]: 460/478 looper letters, 92 selfloop transitions, 30 changer transitions 5/129 dead transitions. [2023-08-29 21:08:23,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 129 transitions, 1548 flow [2023-08-29 21:08:23,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:08:23,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:08:23,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 587 transitions. [2023-08-29 21:08:23,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3070083682008368 [2023-08-29 21:08:23,185 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 587 transitions. [2023-08-29 21:08:23,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 587 transitions. [2023-08-29 21:08:23,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:08:23,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 587 transitions. [2023-08-29 21:08:23,186 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) [2023-08-29 21:08:23,201 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) [2023-08-29 21:08:23,202 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) [2023-08-29 21:08:23,202 INFO L175 Difference]: Start difference. First operand has 89 places, 104 transitions, 1110 flow. Second operand 4 states and 587 transitions. [2023-08-29 21:08:23,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 129 transitions, 1548 flow [2023-08-29 21:08:23,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 129 transitions, 1509 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-29 21:08:23,206 INFO L231 Difference]: Finished difference. Result has 91 places, 114 transitions, 1250 flow [2023-08-29 21:08:23,207 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} [2023-08-29 21:08:23,207 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 9 predicate places. [2023-08-29 21:08:23,207 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 114 transitions, 1250 flow [2023-08-29 21:08:23,207 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) [2023-08-29 21:08:23,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:08:23,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:08:23,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-08-29 21:08:23,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:23,413 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)] === [2023-08-29 21:08:23,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:08:23,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1929325578, now seen corresponding path program 1 times [2023-08-29 21:08:23,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:08:23,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995067654] [2023-08-29 21:08:23,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:08:23,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:23,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:08:23,415 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:08:23,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-08-29 21:08:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:08:23,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 21:08:23,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:08:23,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:08:23,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:08:23,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:08:23,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995067654] [2023-08-29 21:08:23,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995067654] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:08:23,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:08:23,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:08:23,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172742932] [2023-08-29 21:08:23,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:08:23,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:08:23,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:08:23,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:08:23,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:08:23,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 478 [2023-08-29 21:08:23,629 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) [2023-08-29 21:08:23,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:08:23,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 478 [2023-08-29 21:08:23,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:08:24,953 INFO L130 PetriNetUnfolder]: 96/334 cut-off events. [2023-08-29 21:08:24,954 INFO L131 PetriNetUnfolder]: For 1161/1161 co-relation queries the response was YES. [2023-08-29 21:08:24,954 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. [2023-08-29 21:08:24,955 INFO L137 encePairwiseOnDemand]: 475/478 looper letters, 52 selfloop transitions, 5 changer transitions 1/67 dead transitions. [2023-08-29 21:08:24,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 67 transitions, 761 flow [2023-08-29 21:08:24,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:08:24,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:08:24,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 609 transitions. [2023-08-29 21:08:24,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246861924686193 [2023-08-29 21:08:24,957 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 609 transitions. [2023-08-29 21:08:24,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 609 transitions. [2023-08-29 21:08:24,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:08:24,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 609 transitions. [2023-08-29 21:08:24,958 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) [2023-08-29 21:08:24,959 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) [2023-08-29 21:08:24,959 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) [2023-08-29 21:08:24,959 INFO L175 Difference]: Start difference. First operand has 91 places, 114 transitions, 1250 flow. Second operand 3 states and 609 transitions. [2023-08-29 21:08:24,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 67 transitions, 761 flow [2023-08-29 21:08:24,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 67 transitions, 480 flow, removed 29 selfloop flow, removed 17 redundant places. [2023-08-29 21:08:24,962 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 340 flow [2023-08-29 21:08:24,963 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} [2023-08-29 21:08:24,963 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -18 predicate places. [2023-08-29 21:08:24,963 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 340 flow [2023-08-29 21:08:24,963 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) [2023-08-29 21:08:24,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:08:24,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:08:24,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-08-29 21:08:25,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:25,177 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)] === [2023-08-29 21:08:25,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:08:25,177 INFO L85 PathProgramCache]: Analyzing trace with hash 218178047, now seen corresponding path program 1 times [2023-08-29 21:08:25,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:08:25,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097447232] [2023-08-29 21:08:25,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:08:25,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:25,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:08:25,179 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:08:25,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-08-29 21:08:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:08:25,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 21:08:25,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:08:25,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-29 21:08:25,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:08:25,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:08:25,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:08:25,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097447232] [2023-08-29 21:08:25,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097447232] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:08:25,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:08:25,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:08:25,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681186616] [2023-08-29 21:08:25,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:08:25,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:08:25,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:08:25,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:08:25,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:08:25,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 478 [2023-08-29 21:08:25,638 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) [2023-08-29 21:08:25,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:08:25,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 478 [2023-08-29 21:08:25,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:08:27,211 INFO L130 PetriNetUnfolder]: 96/327 cut-off events. [2023-08-29 21:08:27,211 INFO L131 PetriNetUnfolder]: For 353/353 co-relation queries the response was YES. [2023-08-29 21:08:27,213 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. [2023-08-29 21:08:27,214 INFO L137 encePairwiseOnDemand]: 469/478 looper letters, 27 selfloop transitions, 28 changer transitions 0/62 dead transitions. [2023-08-29 21:08:27,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 458 flow [2023-08-29 21:08:27,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:08:27,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:08:27,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 600 transitions. [2023-08-29 21:08:27,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41841004184100417 [2023-08-29 21:08:27,220 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 600 transitions. [2023-08-29 21:08:27,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 600 transitions. [2023-08-29 21:08:27,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:08:27,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 600 transitions. [2023-08-29 21:08:27,221 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) [2023-08-29 21:08:27,222 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) [2023-08-29 21:08:27,222 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) [2023-08-29 21:08:27,223 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 340 flow. Second operand 3 states and 600 transitions. [2023-08-29 21:08:27,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 458 flow [2023-08-29 21:08:27,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 62 transitions, 448 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:08:27,224 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 382 flow [2023-08-29 21:08:27,224 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} [2023-08-29 21:08:27,225 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -21 predicate places. [2023-08-29 21:08:27,225 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 382 flow [2023-08-29 21:08:27,225 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) [2023-08-29 21:08:27,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:08:27,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:08:27,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-08-29 21:08:27,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:27,433 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)] === [2023-08-29 21:08:27,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:08:27,433 INFO L85 PathProgramCache]: Analyzing trace with hash 488104228, now seen corresponding path program 1 times [2023-08-29 21:08:27,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:08:27,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187147138] [2023-08-29 21:08:27,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:08:27,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:27,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:08:27,435 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:08:27,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-08-29 21:08:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:08:27,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 21:08:27,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:08:27,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 21:08:27,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:08:27,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:08:27,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:08:27,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187147138] [2023-08-29 21:08:27,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187147138] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:08:27,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:08:27,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:08:27,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241090320] [2023-08-29 21:08:27,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:08:27,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:08:27,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:08:27,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:08:27,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:08:27,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 478 [2023-08-29 21:08:27,900 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) [2023-08-29 21:08:27,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:08:27,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 478 [2023-08-29 21:08:27,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:08:29,230 INFO L130 PetriNetUnfolder]: 96/312 cut-off events. [2023-08-29 21:08:29,230 INFO L131 PetriNetUnfolder]: For 359/359 co-relation queries the response was YES. [2023-08-29 21:08:29,231 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. [2023-08-29 21:08:29,231 INFO L137 encePairwiseOnDemand]: 469/478 looper letters, 27 selfloop transitions, 28 changer transitions 0/60 dead transitions. [2023-08-29 21:08:29,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 500 flow [2023-08-29 21:08:29,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:08:29,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:08:29,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2023-08-29 21:08:29,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121338912133891 [2023-08-29 21:08:29,233 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2023-08-29 21:08:29,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2023-08-29 21:08:29,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:08:29,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2023-08-29 21:08:29,234 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) [2023-08-29 21:08:29,235 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) [2023-08-29 21:08:29,235 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) [2023-08-29 21:08:29,235 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 382 flow. Second operand 3 states and 591 transitions. [2023-08-29 21:08:29,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 500 flow [2023-08-29 21:08:29,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 60 transitions, 444 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:08:29,237 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 378 flow [2023-08-29 21:08:29,237 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} [2023-08-29 21:08:29,238 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -23 predicate places. [2023-08-29 21:08:29,238 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 378 flow [2023-08-29 21:08:29,238 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) [2023-08-29 21:08:29,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:08:29,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:08:29,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-08-29 21:08:29,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:29,451 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)] === [2023-08-29 21:08:29,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:08:29,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1049639630, now seen corresponding path program 1 times [2023-08-29 21:08:29,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:08:29,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672898687] [2023-08-29 21:08:29,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:08:29,452 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:29,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:08:29,453 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:08:29,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-08-29 21:08:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:08:29,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-29 21:08:29,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:08:30,044 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 [2023-08-29 21:08:30,112 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 [2023-08-29 21:08:30,185 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 [2023-08-29 21:08:30,233 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-29 21:08:30,233 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 [2023-08-29 21:08:30,311 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 [2023-08-29 21:08:30,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:08:30,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:08:30,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:08:30,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672898687] [2023-08-29 21:08:30,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672898687] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:08:30,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:08:30,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 21:08:30,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359994248] [2023-08-29 21:08:30,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:08:30,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 21:08:30,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:08:30,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 21:08:30,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-29 21:08:31,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 478 [2023-08-29 21:08:31,730 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) [2023-08-29 21:08:31,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:08:31,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 478 [2023-08-29 21:08:31,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:08:36,792 INFO L130 PetriNetUnfolder]: 128/387 cut-off events. [2023-08-29 21:08:36,792 INFO L131 PetriNetUnfolder]: For 439/439 co-relation queries the response was YES. [2023-08-29 21:08:36,792 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. [2023-08-29 21:08:36,793 INFO L137 encePairwiseOnDemand]: 462/478 looper letters, 56 selfloop transitions, 50 changer transitions 0/110 dead transitions. [2023-08-29 21:08:36,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 110 transitions, 859 flow [2023-08-29 21:08:36,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-29 21:08:36,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-29 21:08:36,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1736 transitions. [2023-08-29 21:08:36,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3301635602890833 [2023-08-29 21:08:36,797 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1736 transitions. [2023-08-29 21:08:36,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1736 transitions. [2023-08-29 21:08:36,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:08:36,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1736 transitions. [2023-08-29 21:08:36,800 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) [2023-08-29 21:08:36,804 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) [2023-08-29 21:08:36,804 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) [2023-08-29 21:08:36,804 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 378 flow. Second operand 11 states and 1736 transitions. [2023-08-29 21:08:36,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 110 transitions, 859 flow [2023-08-29 21:08:36,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 110 transitions, 781 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:08:36,806 INFO L231 Difference]: Finished difference. Result has 70 places, 79 transitions, 685 flow [2023-08-29 21:08:36,806 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} [2023-08-29 21:08:36,807 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2023-08-29 21:08:36,807 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 79 transitions, 685 flow [2023-08-29 21:08:36,807 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) [2023-08-29 21:08:36,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:08:36,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:08:36,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-08-29 21:08:37,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:37,008 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)] === [2023-08-29 21:08:37,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:08:37,008 INFO L85 PathProgramCache]: Analyzing trace with hash 152350123, now seen corresponding path program 1 times [2023-08-29 21:08:37,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:08:37,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123455811] [2023-08-29 21:08:37,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:08:37,009 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:37,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:08:37,010 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:08:37,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-08-29 21:08:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:08:37,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-29 21:08:37,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:08:37,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:08:37,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:08:37,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:08:37,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123455811] [2023-08-29 21:08:37,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123455811] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:08:37,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:08:37,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:08:37,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805788575] [2023-08-29 21:08:37,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:08:37,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:08:37,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:08:37,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:08:37,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:08:38,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 478 [2023-08-29 21:08:38,038 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) [2023-08-29 21:08:38,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:08:38,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 478 [2023-08-29 21:08:38,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:08:39,747 INFO L130 PetriNetUnfolder]: 154/461 cut-off events. [2023-08-29 21:08:39,748 INFO L131 PetriNetUnfolder]: For 1025/1025 co-relation queries the response was YES. [2023-08-29 21:08:39,748 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. [2023-08-29 21:08:39,749 INFO L137 encePairwiseOnDemand]: 465/478 looper letters, 72 selfloop transitions, 22 changer transitions 0/97 dead transitions. [2023-08-29 21:08:39,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 97 transitions, 1004 flow [2023-08-29 21:08:39,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 21:08:39,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 21:08:39,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1110 transitions. [2023-08-29 21:08:39,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38702928870292885 [2023-08-29 21:08:39,751 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1110 transitions. [2023-08-29 21:08:39,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1110 transitions. [2023-08-29 21:08:39,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:08:39,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1110 transitions. [2023-08-29 21:08:39,753 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) [2023-08-29 21:08:39,755 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) [2023-08-29 21:08:39,755 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) [2023-08-29 21:08:39,755 INFO L175 Difference]: Start difference. First operand has 70 places, 79 transitions, 685 flow. Second operand 6 states and 1110 transitions. [2023-08-29 21:08:39,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 97 transitions, 1004 flow [2023-08-29 21:08:39,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 97 transitions, 972 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-08-29 21:08:39,758 INFO L231 Difference]: Finished difference. Result has 73 places, 79 transitions, 787 flow [2023-08-29 21:08:39,758 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} [2023-08-29 21:08:39,758 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -9 predicate places. [2023-08-29 21:08:39,758 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 79 transitions, 787 flow [2023-08-29 21:08:39,759 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) [2023-08-29 21:08:39,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:08:39,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:08:39,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-08-29 21:08:39,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:39,961 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)] === [2023-08-29 21:08:39,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:08:39,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1670878672, now seen corresponding path program 1 times [2023-08-29 21:08:39,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:08:39,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953907377] [2023-08-29 21:08:39,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:08:39,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:39,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:08:39,963 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:08:39,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-08-29 21:08:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 21:08:40,519 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 21:08:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 21:08:40,777 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-08-29 21:08:40,777 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 21:08:40,778 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK (58 of 59 remaining) [2023-08-29 21:08:40,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (57 of 59 remaining) [2023-08-29 21:08:40,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 59 remaining) [2023-08-29 21:08:40,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 59 remaining) [2023-08-29 21:08:40,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 59 remaining) [2023-08-29 21:08:40,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 59 remaining) [2023-08-29 21:08:40,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 59 remaining) [2023-08-29 21:08:40,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 59 remaining) [2023-08-29 21:08:40,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (50 of 59 remaining) [2023-08-29 21:08:40,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 59 remaining) [2023-08-29 21:08:40,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 59 remaining) [2023-08-29 21:08:40,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (47 of 59 remaining) [2023-08-29 21:08:40,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 59 remaining) [2023-08-29 21:08:40,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 59 remaining) [2023-08-29 21:08:40,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 59 remaining) [2023-08-29 21:08:40,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 59 remaining) [2023-08-29 21:08:40,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 59 remaining) [2023-08-29 21:08:40,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 59 remaining) [2023-08-29 21:08:40,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 59 remaining) [2023-08-29 21:08:40,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 59 remaining) [2023-08-29 21:08:40,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 59 remaining) [2023-08-29 21:08:40,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 59 remaining) [2023-08-29 21:08:40,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 59 remaining) [2023-08-29 21:08:40,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 59 remaining) [2023-08-29 21:08:40,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 59 remaining) [2023-08-29 21:08:40,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 59 remaining) [2023-08-29 21:08:40,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 59 remaining) [2023-08-29 21:08:40,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 59 remaining) [2023-08-29 21:08:40,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK (30 of 59 remaining) [2023-08-29 21:08:40,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 59 remaining) [2023-08-29 21:08:40,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 59 remaining) [2023-08-29 21:08:40,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 59 remaining) [2023-08-29 21:08:40,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 59 remaining) [2023-08-29 21:08:40,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK (25 of 59 remaining) [2023-08-29 21:08:40,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 59 remaining) [2023-08-29 21:08:40,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 59 remaining) [2023-08-29 21:08:40,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK (22 of 59 remaining) [2023-08-29 21:08:40,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 59 remaining) [2023-08-29 21:08:40,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 59 remaining) [2023-08-29 21:08:40,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 59 remaining) [2023-08-29 21:08:40,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 59 remaining) [2023-08-29 21:08:40,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 59 remaining) [2023-08-29 21:08:40,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 59 remaining) [2023-08-29 21:08:40,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 59 remaining) [2023-08-29 21:08:40,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 59 remaining) [2023-08-29 21:08:40,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 59 remaining) [2023-08-29 21:08:40,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 59 remaining) [2023-08-29 21:08:40,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 59 remaining) [2023-08-29 21:08:40,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 59 remaining) [2023-08-29 21:08:40,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 59 remaining) [2023-08-29 21:08:40,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 59 remaining) [2023-08-29 21:08:40,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 59 remaining) [2023-08-29 21:08:40,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 59 remaining) [2023-08-29 21:08:40,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 59 remaining) [2023-08-29 21:08:40,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 59 remaining) [2023-08-29 21:08:40,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 59 remaining) [2023-08-29 21:08:40,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 59 remaining) [2023-08-29 21:08:40,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 59 remaining) [2023-08-29 21:08:40,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 59 remaining) [2023-08-29 21:08:40,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-08-29 21:08:40,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:40,986 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] [2023-08-29 21:08:40,990 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 21:08:40,990 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 21:08:41,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:08:41 BasicIcfg [2023-08-29 21:08:41,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 21:08:41,045 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 21:08:41,045 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 21:08:41,046 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 21:08:41,046 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:56:24" (3/4) ... [2023-08-29 21:08:41,048 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-29 21:08:41,048 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 21:08:41,048 INFO L158 Benchmark]: Toolchain (without parser) took 738601.19ms. Allocated memory was 77.6MB in the beginning and 207.6MB in the end (delta: 130.0MB). Free memory was 52.6MB in the beginning and 151.7MB in the end (delta: -99.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-08-29 21:08:41,049 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 58.7MB. Free memory was 36.4MB in the beginning and 36.3MB in the end (delta: 44.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:08:41,049 INFO L158 Benchmark]: CACSL2BoogieTranslator took 929.20ms. Allocated memory is still 77.6MB. Free memory was 52.6MB in the beginning and 45.2MB in the end (delta: 7.4MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. [2023-08-29 21:08:41,055 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.67ms. Allocated memory is still 77.6MB. Free memory was 45.2MB in the beginning and 41.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 21:08:41,055 INFO L158 Benchmark]: Boogie Preprocessor took 37.10ms. Allocated memory is still 77.6MB. Free memory was 41.7MB in the beginning and 38.0MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:08:41,055 INFO L158 Benchmark]: RCFGBuilder took 910.94ms. Allocated memory was 77.6MB in the beginning and 96.5MB in the end (delta: 18.9MB). Free memory was 38.0MB in the beginning and 59.1MB in the end (delta: -21.2MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2023-08-29 21:08:41,056 INFO L158 Benchmark]: TraceAbstraction took 736639.08ms. Allocated memory was 96.5MB in the beginning and 207.6MB in the end (delta: 111.1MB). Free memory was 58.6MB in the beginning and 151.7MB in the end (delta: -93.1MB). Peak memory consumption was 137.5MB. Max. memory is 16.1GB. [2023-08-29 21:08:41,056 INFO L158 Benchmark]: Witness Printer took 2.85ms. Allocated memory is still 207.6MB. Free memory is still 151.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:08:41,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 58.7MB. Free memory was 36.4MB in the beginning and 36.3MB in the end (delta: 44.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 929.20ms. Allocated memory is still 77.6MB. Free memory was 52.6MB in the beginning and 45.2MB in the end (delta: 7.4MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.67ms. Allocated memory is still 77.6MB. Free memory was 45.2MB in the beginning and 41.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.10ms. Allocated memory is still 77.6MB. Free memory was 41.7MB in the beginning and 38.0MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 910.94ms. Allocated memory was 77.6MB in the beginning and 96.5MB in the end (delta: 18.9MB). Free memory was 38.0MB in the beginning and 59.1MB in the end (delta: -21.2MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. * TraceAbstraction took 736639.08ms. Allocated memory was 96.5MB in the beginning and 207.6MB in the end (delta: 111.1MB). Free memory was 58.6MB in the beginning and 151.7MB in the end (delta: -93.1MB). Peak memory consumption was 137.5MB. Max. memory is 16.1GB. * Witness Printer took 2.85ms. Allocated memory is still 207.6MB. Free memory is still 151.7MB. 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: 663.0s, 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: 736.5s, OverallIterations: 28, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 59.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 663.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6046 SdHoareTripleChecker+Valid, 54.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3364 mSDsluCounter, 967 SdHoareTripleChecker+Invalid, 51.2s 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, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.9s 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: 0.4s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 2.1s 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 [2023-08-29 21:08:41,113 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