./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.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 dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 03:21:10,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:21:10,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:21:10,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:21:10,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:21:10,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:21:10,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:21:10,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:21:10,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:21:10,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:21:10,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:21:10,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:21:10,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:21:10,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:21:10,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:21:10,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:21:10,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:21:10,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:21:10,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:21:10,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:21:10,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:21:10,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:21:10,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:21:10,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:21:10,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:21:10,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:21:10,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:21:10,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:21:10,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:21:10,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:21:10,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:21:10,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:21:10,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:21:10,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:21:10,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:21:10,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:21:10,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:21:10,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:21:10,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:21:10,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:21:10,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:21:10,869 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 03:21:10,901 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:21:10,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:21:10,903 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:21:10,903 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:21:10,904 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:21:10,904 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:21:10,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:21:10,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:21:10,905 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:21:10,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:21:10,906 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:21:10,906 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:21:10,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:21:10,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:21:10,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:21:10,907 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:21:10,907 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:21:10,908 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:21:10,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:21:10,908 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:21:10,908 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:21:10,908 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:21:10,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:21:10,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:21:10,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:21:10,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:21:10,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:21:10,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:21:10,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 03:21:10,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 03:21:10,910 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:21:10,910 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:21:10,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:21:10,911 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:21:10,911 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:21:11,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:21:11,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:21:11,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:21:11,242 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:21:11,242 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:21:11,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2023-08-30 03:21:12,505 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:21:12,834 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:21:12,835 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2023-08-30 03:21:12,859 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d22ec8b68/85c1f81e19e74174a9d5a8edc3dd2e1d/FLAG6dd83e462 [2023-08-30 03:21:12,876 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d22ec8b68/85c1f81e19e74174a9d5a8edc3dd2e1d [2023-08-30 03:21:12,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:21:12,880 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:21:12,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:21:12,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:21:12,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:21:12,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:21:12" (1/1) ... [2023-08-30 03:21:12,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@692c7e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:12, skipping insertion in model container [2023-08-30 03:21:12,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:21:12" (1/1) ... [2023-08-30 03:21:12,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:21:12,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:21:13,082 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 03:21:13,439 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-2_2-container_of.i[75002,75015] [2023-08-30 03:21:13,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:21:13,491 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-08-30 03:21:13,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@26471ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:13, skipping insertion in model container [2023-08-30 03:21:13,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:21:13,493 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-30 03:21:13,495 INFO L158 Benchmark]: Toolchain (without parser) took 614.20ms. Allocated memory is still 79.7MB. Free memory was 54.5MB in the beginning and 55.8MB in the end (delta: -1.3MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2023-08-30 03:21:13,496 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 65.0MB. Free memory was 42.9MB in the beginning and 42.8MB in the end (delta: 58.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 03:21:13,497 INFO L158 Benchmark]: CACSL2BoogieTranslator took 611.08ms. Allocated memory is still 79.7MB. Free memory was 54.3MB in the beginning and 55.9MB in the end (delta: -1.6MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2023-08-30 03:21:13,498 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 65.0MB. Free memory was 42.9MB in the beginning and 42.8MB in the end (delta: 58.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 611.08ms. Allocated memory is still 79.7MB. Free memory was 54.3MB in the beginning and 55.9MB in the end (delta: -1.6MB). Peak memory consumption was 22.5MB. 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-2_2-container_of.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 dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 03:21:15,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:21:15,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:21:15,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:21:15,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:21:15,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:21:15,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:21:15,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:21:15,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:21:15,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:21:15,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:21:15,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:21:15,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:21:15,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:21:15,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:21:15,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:21:15,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:21:15,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:21:15,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:21:15,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:21:15,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:21:15,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:21:15,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:21:15,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:21:15,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:21:15,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:21:15,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:21:15,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:21:15,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:21:15,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:21:15,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:21:15,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:21:15,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:21:15,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:21:15,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:21:15,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:21:15,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:21:15,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:21:15,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:21:15,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:21:15,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:21:15,318 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 03:21:15,351 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:21:15,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:21:15,353 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:21:15,353 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:21:15,354 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:21:15,354 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:21:15,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:21:15,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:21:15,355 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:21:15,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:21:15,356 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:21:15,356 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:21:15,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:21:15,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:21:15,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:21:15,357 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:21:15,357 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:21:15,357 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:21:15,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:21:15,358 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:21:15,358 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 03:21:15,358 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 03:21:15,358 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:21:15,359 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:21:15,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:21:15,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:21:15,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:21:15,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:21:15,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:21:15,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:21:15,360 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 03:21:15,360 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 03:21:15,361 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:21:15,361 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:21:15,361 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:21:15,361 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 03:21:15,361 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:21:15,362 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:21:15,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:21:15,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:21:15,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:21:15,672 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:21:15,672 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:21:15,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2023-08-30 03:21:16,936 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:21:17,248 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:21:17,248 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2023-08-30 03:21:17,265 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d47b0b951/4afb6e56b5474fa3bb561d8e0b00cfae/FLAG3c24dce87 [2023-08-30 03:21:17,280 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d47b0b951/4afb6e56b5474fa3bb561d8e0b00cfae [2023-08-30 03:21:17,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:21:17,284 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:21:17,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:21:17,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:21:17,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:21:17,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:21:17" (1/1) ... [2023-08-30 03:21:17,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@295b6767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:17, skipping insertion in model container [2023-08-30 03:21:17,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:21:17" (1/1) ... [2023-08-30 03:21:17,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:21:17,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:21:17,517 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 03:21:18,068 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-2_2-container_of.i[75002,75015] [2023-08-30 03:21:18,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:21:18,139 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-30 03:21:18,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:21:18,155 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 03:21:18,179 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-2_2-container_of.i[75002,75015] [2023-08-30 03:21:18,187 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:21:18,196 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 03:21:18,205 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 03:21:18,240 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-2_2-container_of.i[75002,75015] [2023-08-30 03:21:18,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:21:18,380 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 03:21:18,380 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 03:21:18,380 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 03:21:18,386 INFO L208 MainTranslator]: Completed translation [2023-08-30 03:21:18,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18 WrapperNode [2023-08-30 03:21:18,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:21:18,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 03:21:18,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 03:21:18,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 03:21:18,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (1/1) ... [2023-08-30 03:21:18,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (1/1) ... [2023-08-30 03:21:18,465 INFO L138 Inliner]: procedures = 472, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 114 [2023-08-30 03:21:18,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 03:21:18,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 03:21:18,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 03:21:18,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 03:21:18,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (1/1) ... [2023-08-30 03:21:18,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (1/1) ... [2023-08-30 03:21:18,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (1/1) ... [2023-08-30 03:21:18,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (1/1) ... [2023-08-30 03:21:18,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (1/1) ... [2023-08-30 03:21:18,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (1/1) ... [2023-08-30 03:21:18,503 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (1/1) ... [2023-08-30 03:21:18,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (1/1) ... [2023-08-30 03:21:18,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 03:21:18,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 03:21:18,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 03:21:18,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 03:21:18,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (1/1) ... [2023-08-30 03:21:18,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:21:18,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 03:21:18,553 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 03:21:18,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 03:21:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 03:21:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 03:21:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 03:21:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-30 03:21:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 03:21:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 03:21:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 03:21:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 03:21:18,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 03:21:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 03:21:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-30 03:21:18,587 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-30 03:21:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 03:21:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 03:21:18,588 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 03:21:18,954 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 03:21:18,956 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 03:21:19,429 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 03:21:19,461 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 03:21:19,462 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 03:21:19,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:21:19 BoogieIcfgContainer [2023-08-30 03:21:19,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 03:21:19,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 03:21:19,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 03:21:19,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 03:21:19,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:21:17" (1/3) ... [2023-08-30 03:21:19,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67060537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:21:19, skipping insertion in model container [2023-08-30 03:21:19,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (2/3) ... [2023-08-30 03:21:19,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67060537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:21:19, skipping insertion in model container [2023-08-30 03:21:19,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:21:19" (3/3) ... [2023-08-30 03:21:19,471 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2023-08-30 03:21:19,486 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 03:21:19,486 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 39 error locations. [2023-08-30 03:21:19,486 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 03:21:19,596 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 03:21:19,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 189 transitions, 394 flow [2023-08-30 03:21:19,729 INFO L130 PetriNetUnfolder]: 8/239 cut-off events. [2023-08-30 03:21:19,730 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 03:21:19,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 239 events. 8/239 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 621 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 127. Up to 4 conditions per place. [2023-08-30 03:21:19,736 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 189 transitions, 394 flow [2023-08-30 03:21:19,745 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 187 transitions, 386 flow [2023-08-30 03:21:19,750 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 03:21:19,768 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 187 places, 187 transitions, 386 flow [2023-08-30 03:21:19,775 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 187 places, 187 transitions, 386 flow [2023-08-30 03:21:19,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 187 transitions, 386 flow [2023-08-30 03:21:19,844 INFO L130 PetriNetUnfolder]: 8/239 cut-off events. [2023-08-30 03:21:19,845 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 03:21:19,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 239 events. 8/239 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 621 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 127. Up to 4 conditions per place. [2023-08-30 03:21:19,849 INFO L119 LiptonReduction]: Number of co-enabled transitions 4576 [2023-08-30 03:22:51,849 WARN L222 SmtUtils]: Spent 27.41s on a formula simplification that was a NOOP. DAG size: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:23:12,090 WARN L222 SmtUtils]: Spent 20.24s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:23:41,951 WARN L222 SmtUtils]: Spent 29.86s on a formula simplification that was a NOOP. DAG size: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:24:07,112 WARN L222 SmtUtils]: Spent 25.16s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:24:32,325 WARN L222 SmtUtils]: Spent 11.92s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:24:43,112 WARN L222 SmtUtils]: Spent 10.79s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:24:53,422 WARN L222 SmtUtils]: Spent 10.31s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:25:04,266 WARN L222 SmtUtils]: Spent 10.84s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:26:56,822 WARN L222 SmtUtils]: Spent 1.87m on a formula simplification. DAG size of input: 253 DAG size of output: 246 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:27:51,042 WARN L222 SmtUtils]: Spent 54.22s on a formula simplification that was a NOOP. DAG size: 242 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:30:08,429 WARN L222 SmtUtils]: Spent 2.29m on a formula simplification. DAG size of input: 253 DAG size of output: 246 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:31:17,401 WARN L222 SmtUtils]: Spent 1.15m on a formula simplification that was a NOOP. DAG size: 242 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:31:17,414 INFO L134 LiptonReduction]: Checked pairs total: 15254 [2023-08-30 03:31:17,414 INFO L136 LiptonReduction]: Total number of compositions: 214 [2023-08-30 03:31:17,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 03:31:17,429 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;@d3b60c0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 03:31:17,429 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-08-30 03:31:17,430 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 03:31:17,430 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:31:17,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:17,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 03:31:17,432 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:31:17,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:17,436 INFO L85 PathProgramCache]: Analyzing trace with hash 666, now seen corresponding path program 1 times [2023-08-30 03:31:17,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:17,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1558406215] [2023-08-30 03:31:17,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:31:17,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:17,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:17,448 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:17,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-30 03:31:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:31:17,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-30 03:31:17,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:17,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:17,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:17,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:17,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1558406215] [2023-08-30 03:31:17,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1558406215] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:17,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:17,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 03:31:17,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359631849] [2023-08-30 03:31:17,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:17,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 03:31:17,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:17,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 03:31:17,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 03:31:17,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 403 [2023-08-30 03:31:17,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 73 transitions, 158 flow. Second operand has 2 states, 2 states have (on average 175.5) internal successors, (351), 2 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:17,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:31:17,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 403 [2023-08-30 03:31:17,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:31:19,351 INFO L130 PetriNetUnfolder]: 1091/2124 cut-off events. [2023-08-30 03:31:19,351 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-30 03:31:19,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3966 conditions, 2124 events. 1091/2124 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 14372 event pairs, 1090 based on Foata normal form. 0/1198 useless extension candidates. Maximal degree in co-relation 3776. Up to 1818 conditions per place. [2023-08-30 03:31:19,372 INFO L137 encePairwiseOnDemand]: 391/403 looper letters, 46 selfloop transitions, 0 changer transitions 0/61 dead transitions. [2023-08-30 03:31:19,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 61 transitions, 226 flow [2023-08-30 03:31:19,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 03:31:19,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 03:31:19,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 408 transitions. [2023-08-30 03:31:19,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062034739454094 [2023-08-30 03:31:19,414 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 408 transitions. [2023-08-30 03:31:19,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 408 transitions. [2023-08-30 03:31:19,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:31:19,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 408 transitions. [2023-08-30 03:31:19,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 204.0) internal successors, (408), 2 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:19,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 403.0) internal successors, (1209), 3 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:19,434 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 403.0) internal successors, (1209), 3 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:19,436 INFO L175 Difference]: Start difference. First operand has 76 places, 73 transitions, 158 flow. Second operand 2 states and 408 transitions. [2023-08-30 03:31:19,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 61 transitions, 226 flow [2023-08-30 03:31:19,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 218 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 03:31:19,475 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 126 flow [2023-08-30 03:31:19,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=126, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2023-08-30 03:31:19,480 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -13 predicate places. [2023-08-30 03:31:19,480 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 126 flow [2023-08-30 03:31:19,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 175.5) internal successors, (351), 2 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:19,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:19,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 03:31:19,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-08-30 03:31:19,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:19,693 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:31:19,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:19,694 INFO L85 PathProgramCache]: Analyzing trace with hash 21095, now seen corresponding path program 1 times [2023-08-30 03:31:19,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:19,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912096554] [2023-08-30 03:31:19,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:31:19,695 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:19,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:19,696 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:19,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-30 03:31:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:31:19,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 03:31:19,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:19,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:19,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:19,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:19,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912096554] [2023-08-30 03:31:19,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912096554] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:19,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:19,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:31:19,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671224452] [2023-08-30 03:31:19,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:19,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:31:19,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:19,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:31:19,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:31:19,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 403 [2023-08-30 03:31:19,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:19,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:31:19,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 403 [2023-08-30 03:31:19,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:31:22,509 INFO L130 PetriNetUnfolder]: 1090/1990 cut-off events. [2023-08-30 03:31:22,509 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 03:31:22,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3826 conditions, 1990 events. 1090/1990 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 11308 event pairs, 1090 based on Foata normal form. 0/1144 useless extension candidates. Maximal degree in co-relation 3823. Up to 1813 conditions per place. [2023-08-30 03:31:22,523 INFO L137 encePairwiseOnDemand]: 399/403 looper letters, 57 selfloop transitions, 1 changer transitions 1/74 dead transitions. [2023-08-30 03:31:22,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 74 transitions, 270 flow [2023-08-30 03:31:22,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:31:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:31:22,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2023-08-30 03:31:22,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47559966914805624 [2023-08-30 03:31:22,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2023-08-30 03:31:22,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2023-08-30 03:31:22,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:31:22,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2023-08-30 03:31:22,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-08-30 03:31:22,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:22,540 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:22,540 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 126 flow. Second operand 3 states and 575 transitions. [2023-08-30 03:31:22,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 74 transitions, 270 flow [2023-08-30 03:31:22,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 03:31:22,543 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 135 flow [2023-08-30 03:31:22,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2023-08-30 03:31:22,544 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -10 predicate places. [2023-08-30 03:31:22,544 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 135 flow [2023-08-30 03:31:22,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:22,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:22,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:31:22,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-08-30 03:31:22,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:22,757 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:31:22,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:22,757 INFO L85 PathProgramCache]: Analyzing trace with hash 652141, now seen corresponding path program 1 times [2023-08-30 03:31:22,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:22,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030363910] [2023-08-30 03:31:22,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:31:22,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:22,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:22,762 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:22,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-30 03:31:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:31:22,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 03:31:22,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:22,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 03:31:22,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:22,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:22,973 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:22,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030363910] [2023-08-30 03:31:22,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030363910] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:22,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:22,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:31:22,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200374236] [2023-08-30 03:31:22,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:22,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:31:22,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:22,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:31:22,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:31:23,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 403 [2023-08-30 03:31:23,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:23,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:31:23,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 403 [2023-08-30 03:31:23,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:31:24,543 INFO L130 PetriNetUnfolder]: 850/1682 cut-off events. [2023-08-30 03:31:24,543 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 03:31:24,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3241 conditions, 1682 events. 850/1682 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 10437 event pairs, 525 based on Foata normal form. 37/1075 useless extension candidates. Maximal degree in co-relation 3236. Up to 882 conditions per place. [2023-08-30 03:31:24,553 INFO L137 encePairwiseOnDemand]: 393/403 looper letters, 57 selfloop transitions, 6 changer transitions 0/78 dead transitions. [2023-08-30 03:31:24,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 78 transitions, 295 flow [2023-08-30 03:31:24,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:31:24,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:31:24,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 562 transitions. [2023-08-30 03:31:24,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46484698097601324 [2023-08-30 03:31:24,556 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 562 transitions. [2023-08-30 03:31:24,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 562 transitions. [2023-08-30 03:31:24,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:31:24,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 562 transitions. [2023-08-30 03:31:24,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:24,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:24,561 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:24,561 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 135 flow. Second operand 3 states and 562 transitions. [2023-08-30 03:31:24,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 78 transitions, 295 flow [2023-08-30 03:31:24,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 78 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:31:24,564 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 164 flow [2023-08-30 03:31:24,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2023-08-30 03:31:24,565 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -8 predicate places. [2023-08-30 03:31:24,565 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 164 flow [2023-08-30 03:31:24,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:24,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:24,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:31:24,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-30 03:31:24,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:24,778 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:31:24,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:24,778 INFO L85 PathProgramCache]: Analyzing trace with hash 652065, now seen corresponding path program 1 times [2023-08-30 03:31:24,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:24,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643530759] [2023-08-30 03:31:24,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:31:24,779 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:24,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:24,780 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:24,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-30 03:31:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:31:24,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 03:31:24,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:24,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 03:31:24,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:24,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:24,925 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:24,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643530759] [2023-08-30 03:31:24,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643530759] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:24,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:24,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:31:24,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557361507] [2023-08-30 03:31:24,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:24,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:31:24,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:24,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:31:24,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:31:25,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 403 [2023-08-30 03:31:25,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:25,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:31:25,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 403 [2023-08-30 03:31:25,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:31:26,718 INFO L130 PetriNetUnfolder]: 850/1624 cut-off events. [2023-08-30 03:31:26,719 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-30 03:31:26,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3481 conditions, 1624 events. 850/1624 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9398 event pairs, 730 based on Foata normal form. 0/1032 useless extension candidates. Maximal degree in co-relation 3475. Up to 1240 conditions per place. [2023-08-30 03:31:26,728 INFO L137 encePairwiseOnDemand]: 397/403 looper letters, 51 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2023-08-30 03:31:26,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 71 transitions, 296 flow [2023-08-30 03:31:26,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:31:26,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:31:26,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2023-08-30 03:31:26,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392059553349876 [2023-08-30 03:31:26,731 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2023-08-30 03:31:26,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2023-08-30 03:31:26,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:31:26,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2023-08-30 03:31:26,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:26,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:26,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:26,737 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 164 flow. Second operand 3 states and 531 transitions. [2023-08-30 03:31:26,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 71 transitions, 296 flow [2023-08-30 03:31:26,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 71 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:31:26,744 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 168 flow [2023-08-30 03:31:26,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2023-08-30 03:31:26,746 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -8 predicate places. [2023-08-30 03:31:26,746 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 168 flow [2023-08-30 03:31:26,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:26,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:26,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:31:26,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-30 03:31:26,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:26,962 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:31:26,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:26,962 INFO L85 PathProgramCache]: Analyzing trace with hash 655561, now seen corresponding path program 1 times [2023-08-30 03:31:26,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:26,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552811673] [2023-08-30 03:31:26,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:31:26,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:26,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:26,966 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:26,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-30 03:31:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:31:27,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 03:31:27,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:27,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 03:31:27,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:27,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:27,106 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:27,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552811673] [2023-08-30 03:31:27,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552811673] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:27,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:27,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:31:27,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525896343] [2023-08-30 03:31:27,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:27,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:31:27,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:27,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:31:27,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:31:27,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 403 [2023-08-30 03:31:27,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:27,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:31:27,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 403 [2023-08-30 03:31:27,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:31:29,694 INFO L130 PetriNetUnfolder]: 701/1406 cut-off events. [2023-08-30 03:31:29,694 INFO L131 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2023-08-30 03:31:29,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2890 conditions, 1406 events. 701/1406 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7869 event pairs, 557 based on Foata normal form. 0/954 useless extension candidates. Maximal degree in co-relation 2884. Up to 932 conditions per place. [2023-08-30 03:31:29,704 INFO L137 encePairwiseOnDemand]: 391/403 looper letters, 63 selfloop transitions, 12 changer transitions 0/90 dead transitions. [2023-08-30 03:31:29,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 90 transitions, 380 flow [2023-08-30 03:31:29,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:31:29,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:31:29,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 931 transitions. [2023-08-30 03:31:29,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4620347394540943 [2023-08-30 03:31:29,709 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 931 transitions. [2023-08-30 03:31:29,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 931 transitions. [2023-08-30 03:31:29,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:31:29,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 931 transitions. [2023-08-30 03:31:29,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 186.2) internal successors, (931), 5 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:29,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 403.0) internal successors, (2418), 6 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:29,718 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 403.0) internal successors, (2418), 6 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:29,718 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 168 flow. Second operand 5 states and 931 transitions. [2023-08-30 03:31:29,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 90 transitions, 380 flow [2023-08-30 03:31:29,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 90 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:31:29,727 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 209 flow [2023-08-30 03:31:29,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=209, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2023-08-30 03:31:29,730 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -4 predicate places. [2023-08-30 03:31:29,730 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 209 flow [2023-08-30 03:31:29,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:29,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:29,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:31:29,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-30 03:31:29,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:29,943 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:31:29,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:29,944 INFO L85 PathProgramCache]: Analyzing trace with hash 655563, now seen corresponding path program 1 times [2023-08-30 03:31:29,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:29,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399691676] [2023-08-30 03:31:29,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:31:29,945 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:29,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:29,946 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:29,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-30 03:31:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:31:30,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 03:31:30,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:30,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 03:31:30,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:30,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:30,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:30,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399691676] [2023-08-30 03:31:30,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399691676] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:30,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:30,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:31:30,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111329252] [2023-08-30 03:31:30,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:30,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:31:30,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:30,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:31:30,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:31:30,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 403 [2023-08-30 03:31:30,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:30,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:31:30,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 403 [2023-08-30 03:31:30,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:31:32,380 INFO L130 PetriNetUnfolder]: 575/1205 cut-off events. [2023-08-30 03:31:32,381 INFO L131 PetriNetUnfolder]: For 212/212 co-relation queries the response was YES. [2023-08-30 03:31:32,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2593 conditions, 1205 events. 575/1205 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6800 event pairs, 421 based on Foata normal form. 64/956 useless extension candidates. Maximal degree in co-relation 2586. Up to 725 conditions per place. [2023-08-30 03:31:32,387 INFO L137 encePairwiseOnDemand]: 396/403 looper letters, 61 selfloop transitions, 6 changer transitions 2/84 dead transitions. [2023-08-30 03:31:32,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 84 transitions, 391 flow [2023-08-30 03:31:32,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:31:32,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:31:32,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 757 transitions. [2023-08-30 03:31:32,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696029776674938 [2023-08-30 03:31:32,390 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 757 transitions. [2023-08-30 03:31:32,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 757 transitions. [2023-08-30 03:31:32,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:31:32,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 757 transitions. [2023-08-30 03:31:32,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 189.25) internal successors, (757), 4 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:32,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 403.0) internal successors, (2015), 5 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:32,396 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 403.0) internal successors, (2015), 5 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:32,396 INFO L175 Difference]: Start difference. First operand has 72 places, 63 transitions, 209 flow. Second operand 4 states and 757 transitions. [2023-08-30 03:31:32,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 84 transitions, 391 flow [2023-08-30 03:31:32,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 84 transitions, 391 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 03:31:32,399 INFO L231 Difference]: Finished difference. Result has 76 places, 63 transitions, 227 flow [2023-08-30 03:31:32,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=227, PETRI_PLACES=76, PETRI_TRANSITIONS=63} [2023-08-30 03:31:32,401 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 0 predicate places. [2023-08-30 03:31:32,402 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 63 transitions, 227 flow [2023-08-30 03:31:32,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:32,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:32,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:31:32,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-08-30 03:31:32,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:32,616 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:31:32,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:32,617 INFO L85 PathProgramCache]: Analyzing trace with hash 655568, now seen corresponding path program 1 times [2023-08-30 03:31:32,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:32,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557647930] [2023-08-30 03:31:32,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:31:32,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:32,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:32,619 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:32,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-08-30 03:31:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:31:32,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 03:31:32,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:32,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:31:32,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 03:31:32,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:32,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:32,825 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:32,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557647930] [2023-08-30 03:31:32,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557647930] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:32,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:32,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:31:32,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040701485] [2023-08-30 03:31:32,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:32,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:31:32,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:32,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:31:32,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:31:33,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 403 [2023-08-30 03:31:33,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 63 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:33,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:31:33,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 403 [2023-08-30 03:31:33,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:31:34,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:31:34,697 INFO L130 PetriNetUnfolder]: 567/1213 cut-off events. [2023-08-30 03:31:34,697 INFO L131 PetriNetUnfolder]: For 299/299 co-relation queries the response was YES. [2023-08-30 03:31:34,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2749 conditions, 1213 events. 567/1213 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7261 event pairs, 567 based on Foata normal form. 0/890 useless extension candidates. Maximal degree in co-relation 2740. Up to 1009 conditions per place. [2023-08-30 03:31:34,704 INFO L137 encePairwiseOnDemand]: 399/403 looper letters, 44 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-08-30 03:31:34,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 61 transitions, 315 flow [2023-08-30 03:31:34,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:31:34,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:31:34,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 561 transitions. [2023-08-30 03:31:34,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4640198511166253 [2023-08-30 03:31:34,708 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 561 transitions. [2023-08-30 03:31:34,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 561 transitions. [2023-08-30 03:31:34,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:31:34,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 561 transitions. [2023-08-30 03:31:34,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-08-30 03:31:34,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:34,712 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:34,712 INFO L175 Difference]: Start difference. First operand has 76 places, 63 transitions, 227 flow. Second operand 3 states and 561 transitions. [2023-08-30 03:31:34,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 61 transitions, 315 flow [2023-08-30 03:31:34,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 61 transitions, 300 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-30 03:31:34,715 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 212 flow [2023-08-30 03:31:34,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2023-08-30 03:31:34,716 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -3 predicate places. [2023-08-30 03:31:34,716 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 212 flow [2023-08-30 03:31:34,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:34,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:34,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:31:34,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-08-30 03:31:34,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:34,930 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:31:34,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:34,930 INFO L85 PathProgramCache]: Analyzing trace with hash 655566, now seen corresponding path program 1 times [2023-08-30 03:31:34,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:34,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962103133] [2023-08-30 03:31:34,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:31:34,931 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:34,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:34,933 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:34,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-08-30 03:31:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:31:35,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 03:31:35,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:35,118 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-30 03:31:35,119 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 [2023-08-30 03:31:35,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:35,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:35,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:35,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962103133] [2023-08-30 03:31:35,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962103133] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:35,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:35,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:31:35,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823388941] [2023-08-30 03:31:35,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:35,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:31:35,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:35,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:31:35,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:31:35,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 403 [2023-08-30 03:31:35,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:35,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:31:35,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 403 [2023-08-30 03:31:35,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:31:36,795 INFO L130 PetriNetUnfolder]: 559/1191 cut-off events. [2023-08-30 03:31:36,795 INFO L131 PetriNetUnfolder]: For 238/238 co-relation queries the response was YES. [2023-08-30 03:31:36,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2563 conditions, 1191 events. 559/1191 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7058 event pairs, 455 based on Foata normal form. 0/881 useless extension candidates. Maximal degree in co-relation 2555. Up to 748 conditions per place. [2023-08-30 03:31:36,801 INFO L137 encePairwiseOnDemand]: 392/403 looper letters, 46 selfloop transitions, 10 changer transitions 0/71 dead transitions. [2023-08-30 03:31:36,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 71 transitions, 344 flow [2023-08-30 03:31:36,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:31:36,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:31:36,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 570 transitions. [2023-08-30 03:31:36,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47146401985111663 [2023-08-30 03:31:36,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 570 transitions. [2023-08-30 03:31:36,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 570 transitions. [2023-08-30 03:31:36,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:31:36,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 570 transitions. [2023-08-30 03:31:36,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:36,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:36,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:36,809 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 212 flow. Second operand 3 states and 570 transitions. [2023-08-30 03:31:36,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 71 transitions, 344 flow [2023-08-30 03:31:36,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 71 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:31:36,812 INFO L231 Difference]: Finished difference. Result has 72 places, 59 transitions, 226 flow [2023-08-30 03:31:36,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=72, PETRI_TRANSITIONS=59} [2023-08-30 03:31:36,813 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -4 predicate places. [2023-08-30 03:31:36,813 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 59 transitions, 226 flow [2023-08-30 03:31:36,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:36,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:36,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:31:36,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-08-30 03:31:37,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:37,031 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:31:37,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:37,031 INFO L85 PathProgramCache]: Analyzing trace with hash 20322818, now seen corresponding path program 1 times [2023-08-30 03:31:37,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:37,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168686974] [2023-08-30 03:31:37,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:31:37,032 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:37,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:37,033 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:37,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-08-30 03:31:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:31:37,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 03:31:37,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:37,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 03:31:37,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:37,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:37,226 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:37,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168686974] [2023-08-30 03:31:37,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168686974] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:37,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:37,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:31:37,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179698523] [2023-08-30 03:31:37,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:37,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:31:37,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:37,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:31:37,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:31:37,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 403 [2023-08-30 03:31:37,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 59 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 164.8) internal successors, (824), 5 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:37,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:31:37,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 403 [2023-08-30 03:31:37,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:31:40,227 INFO L130 PetriNetUnfolder]: 611/1322 cut-off events. [2023-08-30 03:31:40,227 INFO L131 PetriNetUnfolder]: For 349/349 co-relation queries the response was YES. [2023-08-30 03:31:40,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2827 conditions, 1322 events. 611/1322 cut-off events. For 349/349 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8451 event pairs, 68 based on Foata normal form. 0/1033 useless extension candidates. Maximal degree in co-relation 2819. Up to 622 conditions per place. [2023-08-30 03:31:40,233 INFO L137 encePairwiseOnDemand]: 387/403 looper letters, 80 selfloop transitions, 17 changer transitions 0/110 dead transitions. [2023-08-30 03:31:40,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 110 transitions, 543 flow [2023-08-30 03:31:40,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 03:31:40,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 03:31:40,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1250 transitions. [2023-08-30 03:31:40,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44310528181495923 [2023-08-30 03:31:40,238 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1250 transitions. [2023-08-30 03:31:40,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1250 transitions. [2023-08-30 03:31:40,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:31:40,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1250 transitions. [2023-08-30 03:31:40,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.57142857142858) internal successors, (1250), 7 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:40,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 403.0) internal successors, (3224), 8 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:40,246 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 403.0) internal successors, (3224), 8 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:40,246 INFO L175 Difference]: Start difference. First operand has 72 places, 59 transitions, 226 flow. Second operand 7 states and 1250 transitions. [2023-08-30 03:31:40,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 110 transitions, 543 flow [2023-08-30 03:31:40,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 110 transitions, 521 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:31:40,249 INFO L231 Difference]: Finished difference. Result has 80 places, 62 transitions, 292 flow [2023-08-30 03:31:40,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=292, PETRI_PLACES=80, PETRI_TRANSITIONS=62} [2023-08-30 03:31:40,250 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 4 predicate places. [2023-08-30 03:31:40,250 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 62 transitions, 292 flow [2023-08-30 03:31:40,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.8) internal successors, (824), 5 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:40,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:40,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:31:40,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-08-30 03:31:40,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:40,464 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:31:40,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:40,464 INFO L85 PathProgramCache]: Analyzing trace with hash 20322819, now seen corresponding path program 1 times [2023-08-30 03:31:40,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:40,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423327496] [2023-08-30 03:31:40,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:31:40,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:40,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:40,467 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:40,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-08-30 03:31:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:31:40,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 03:31:40,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:40,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 03:31:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:40,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:40,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:40,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1423327496] [2023-08-30 03:31:40,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1423327496] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:40,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:40,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:31:40,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376288062] [2023-08-30 03:31:40,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:40,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:31:40,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:40,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:31:40,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:31:41,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 403 [2023-08-30 03:31:41,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 62 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 167.8) internal successors, (839), 5 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:41,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:31:41,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 403 [2023-08-30 03:31:41,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:31:45,252 INFO L130 PetriNetUnfolder]: 609/1191 cut-off events. [2023-08-30 03:31:45,252 INFO L131 PetriNetUnfolder]: For 989/989 co-relation queries the response was YES. [2023-08-30 03:31:45,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3096 conditions, 1191 events. 609/1191 cut-off events. For 989/989 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6633 event pairs, 105 based on Foata normal form. 160/1082 useless extension candidates. Maximal degree in co-relation 3085. Up to 648 conditions per place. [2023-08-30 03:31:45,257 INFO L137 encePairwiseOnDemand]: 393/403 looper letters, 74 selfloop transitions, 12 changer transitions 2/101 dead transitions. [2023-08-30 03:31:45,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 101 transitions, 568 flow [2023-08-30 03:31:45,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:31:45,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:31:45,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 922 transitions. [2023-08-30 03:31:45,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4575682382133995 [2023-08-30 03:31:45,260 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 922 transitions. [2023-08-30 03:31:45,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 922 transitions. [2023-08-30 03:31:45,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:31:45,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 922 transitions. [2023-08-30 03:31:45,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 184.4) internal successors, (922), 5 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:45,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 403.0) internal successors, (2418), 6 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:45,266 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 403.0) internal successors, (2418), 6 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:45,266 INFO L175 Difference]: Start difference. First operand has 80 places, 62 transitions, 292 flow. Second operand 5 states and 922 transitions. [2023-08-30 03:31:45,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 101 transitions, 568 flow [2023-08-30 03:31:45,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 101 transitions, 527 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 03:31:45,271 INFO L231 Difference]: Finished difference. Result has 82 places, 66 transitions, 319 flow [2023-08-30 03:31:45,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=319, PETRI_PLACES=82, PETRI_TRANSITIONS=66} [2023-08-30 03:31:45,272 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 6 predicate places. [2023-08-30 03:31:45,272 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 66 transitions, 319 flow [2023-08-30 03:31:45,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 167.8) internal successors, (839), 5 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:45,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:45,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 03:31:45,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-08-30 03:31:45,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:45,485 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:31:45,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:45,485 INFO L85 PathProgramCache]: Analyzing trace with hash 626645403, now seen corresponding path program 1 times [2023-08-30 03:31:45,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:45,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345510471] [2023-08-30 03:31:45,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:31:45,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:45,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:45,487 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:45,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-08-30 03:31:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:31:45,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 03:31:45,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:45,686 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 [2023-08-30 03:31:45,743 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 03:31:45,744 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 [2023-08-30 03:31:45,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:45,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:45,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:45,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345510471] [2023-08-30 03:31:45,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345510471] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:45,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:45,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:31:45,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244727475] [2023-08-30 03:31:45,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:45,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:31:45,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:45,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:31:45,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:31:46,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 403 [2023-08-30 03:31:46,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 66 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:46,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:31:46,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 403 [2023-08-30 03:31:46,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:31:48,641 INFO L130 PetriNetUnfolder]: 701/1444 cut-off events. [2023-08-30 03:31:48,641 INFO L131 PetriNetUnfolder]: For 1391/1394 co-relation queries the response was YES. [2023-08-30 03:31:48,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3859 conditions, 1444 events. 701/1444 cut-off events. For 1391/1394 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9114 event pairs, 440 based on Foata normal form. 0/1105 useless extension candidates. Maximal degree in co-relation 3846. Up to 1037 conditions per place. [2023-08-30 03:31:48,649 INFO L137 encePairwiseOnDemand]: 394/403 looper letters, 53 selfloop transitions, 11 changer transitions 0/79 dead transitions. [2023-08-30 03:31:48,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 79 transitions, 497 flow [2023-08-30 03:31:48,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:31:48,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:31:48,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 537 transitions. [2023-08-30 03:31:48,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4441687344913151 [2023-08-30 03:31:48,652 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 537 transitions. [2023-08-30 03:31:48,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 537 transitions. [2023-08-30 03:31:48,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:31:48,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 537 transitions. [2023-08-30 03:31:48,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:48,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:48,656 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:48,656 INFO L175 Difference]: Start difference. First operand has 82 places, 66 transitions, 319 flow. Second operand 3 states and 537 transitions. [2023-08-30 03:31:48,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 79 transitions, 497 flow [2023-08-30 03:31:48,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 472 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 03:31:48,661 INFO L231 Difference]: Finished difference. Result has 82 places, 73 transitions, 390 flow [2023-08-30 03:31:48,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=390, PETRI_PLACES=82, PETRI_TRANSITIONS=73} [2023-08-30 03:31:48,661 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 6 predicate places. [2023-08-30 03:31:48,661 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 73 transitions, 390 flow [2023-08-30 03:31:48,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:48,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:48,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 03:31:48,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-08-30 03:31:48,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:48,867 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:31:48,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:48,868 INFO L85 PathProgramCache]: Analyzing trace with hash 630013587, now seen corresponding path program 1 times [2023-08-30 03:31:48,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:48,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639091938] [2023-08-30 03:31:48,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:31:48,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:48,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:48,869 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:48,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-08-30 03:31:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:31:49,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 03:31:49,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:49,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 03:31:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:49,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:49,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:49,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639091938] [2023-08-30 03:31:49,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639091938] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:49,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:49,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:31:49,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727877006] [2023-08-30 03:31:49,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:49,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:31:49,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:49,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:31:49,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:31:49,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 403 [2023-08-30 03:31:49,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 172.25) internal successors, (689), 4 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:49,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:31:49,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 403 [2023-08-30 03:31:49,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:31:51,449 INFO L130 PetriNetUnfolder]: 652/1426 cut-off events. [2023-08-30 03:31:51,449 INFO L131 PetriNetUnfolder]: For 1667/1673 co-relation queries the response was YES. [2023-08-30 03:31:51,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4287 conditions, 1426 events. 652/1426 cut-off events. For 1667/1673 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9051 event pairs, 248 based on Foata normal form. 0/1246 useless extension candidates. Maximal degree in co-relation 4273. Up to 756 conditions per place. [2023-08-30 03:31:51,455 INFO L137 encePairwiseOnDemand]: 391/403 looper letters, 70 selfloop transitions, 15 changer transitions 0/100 dead transitions. [2023-08-30 03:31:51,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 100 transitions, 679 flow [2023-08-30 03:31:51,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:31:51,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:31:51,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 925 transitions. [2023-08-30 03:31:51,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45905707196029777 [2023-08-30 03:31:51,459 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 925 transitions. [2023-08-30 03:31:51,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 925 transitions. [2023-08-30 03:31:51,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:31:51,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 925 transitions. [2023-08-30 03:31:51,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:51,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 403.0) internal successors, (2418), 6 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:51,464 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 403.0) internal successors, (2418), 6 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:51,464 INFO L175 Difference]: Start difference. First operand has 82 places, 73 transitions, 390 flow. Second operand 5 states and 925 transitions. [2023-08-30 03:31:51,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 100 transitions, 679 flow [2023-08-30 03:31:51,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 100 transitions, 653 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:31:51,470 INFO L231 Difference]: Finished difference. Result has 86 places, 74 transitions, 431 flow [2023-08-30 03:31:51,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=431, PETRI_PLACES=86, PETRI_TRANSITIONS=74} [2023-08-30 03:31:51,471 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 10 predicate places. [2023-08-30 03:31:51,471 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 74 transitions, 431 flow [2023-08-30 03:31:51,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.25) internal successors, (689), 4 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:51,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:51,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 03:31:51,486 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 (13)] Ended with exit code 0 [2023-08-30 03:31:51,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:51,684 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:31:51,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:51,684 INFO L85 PathProgramCache]: Analyzing trace with hash 630013589, now seen corresponding path program 1 times [2023-08-30 03:31:51,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:51,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396000668] [2023-08-30 03:31:51,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:31:51,685 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:51,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:51,686 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:51,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-08-30 03:31:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:31:51,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 03:31:51,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:51,859 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 [2023-08-30 03:31:51,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:51,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:51,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:51,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396000668] [2023-08-30 03:31:51,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396000668] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:51,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:51,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:31:51,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900814792] [2023-08-30 03:31:51,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:51,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:31:51,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:51,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:31:51,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:31:52,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 403 [2023-08-30 03:31:52,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 74 transitions, 431 flow. Second operand has 4 states, 4 states have (on average 173.25) internal successors, (693), 4 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:52,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:31:52,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 403 [2023-08-30 03:31:52,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:31:54,420 INFO L130 PetriNetUnfolder]: 542/1229 cut-off events. [2023-08-30 03:31:54,420 INFO L131 PetriNetUnfolder]: For 1659/1666 co-relation queries the response was YES. [2023-08-30 03:31:54,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3779 conditions, 1229 events. 542/1229 cut-off events. For 1659/1666 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7824 event pairs, 236 based on Foata normal form. 63/1136 useless extension candidates. Maximal degree in co-relation 3764. Up to 781 conditions per place. [2023-08-30 03:31:54,427 INFO L137 encePairwiseOnDemand]: 396/403 looper letters, 67 selfloop transitions, 9 changer transitions 2/93 dead transitions. [2023-08-30 03:31:54,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 93 transitions, 659 flow [2023-08-30 03:31:54,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:31:54,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:31:54,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 752 transitions. [2023-08-30 03:31:54,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4665012406947891 [2023-08-30 03:31:54,431 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 752 transitions. [2023-08-30 03:31:54,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 752 transitions. [2023-08-30 03:31:54,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:31:54,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 752 transitions. [2023-08-30 03:31:54,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:54,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 403.0) internal successors, (2015), 5 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:54,436 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 403.0) internal successors, (2015), 5 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:54,436 INFO L175 Difference]: Start difference. First operand has 86 places, 74 transitions, 431 flow. Second operand 4 states and 752 transitions. [2023-08-30 03:31:54,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 93 transitions, 659 flow [2023-08-30 03:31:54,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 93 transitions, 655 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:31:54,441 INFO L231 Difference]: Finished difference. Result has 89 places, 74 transitions, 454 flow [2023-08-30 03:31:54,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=454, PETRI_PLACES=89, PETRI_TRANSITIONS=74} [2023-08-30 03:31:54,441 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 13 predicate places. [2023-08-30 03:31:54,442 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 74 transitions, 454 flow [2023-08-30 03:31:54,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.25) internal successors, (693), 4 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:54,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:54,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:31:54,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-08-30 03:31:54,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:54,643 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:31:54,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:54,643 INFO L85 PathProgramCache]: Analyzing trace with hash -2048827609, now seen corresponding path program 1 times [2023-08-30 03:31:54,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:54,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62804524] [2023-08-30 03:31:54,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:31:54,644 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:54,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:54,645 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:54,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-08-30 03:31:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:31:54,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 03:31:54,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:54,837 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:31:54,838 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:31:54,838 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:31:54,840 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 [2023-08-30 03:31:54,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:54,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:54,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:54,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62804524] [2023-08-30 03:31:54,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62804524] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:54,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:54,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:31:54,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061043302] [2023-08-30 03:31:54,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:54,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:31:54,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:54,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:31:54,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:31:55,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 403 [2023-08-30 03:31:55,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 74 transitions, 454 flow. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:55,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:31:55,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 403 [2023-08-30 03:31:55,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:31:57,221 INFO L130 PetriNetUnfolder]: 674/1476 cut-off events. [2023-08-30 03:31:57,221 INFO L131 PetriNetUnfolder]: For 2205/2214 co-relation queries the response was YES. [2023-08-30 03:31:57,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4687 conditions, 1476 events. 674/1476 cut-off events. For 2205/2214 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9694 event pairs, 393 based on Foata normal form. 0/1278 useless extension candidates. Maximal degree in co-relation 4670. Up to 1057 conditions per place. [2023-08-30 03:31:57,229 INFO L137 encePairwiseOnDemand]: 394/403 looper letters, 58 selfloop transitions, 17 changer transitions 0/89 dead transitions. [2023-08-30 03:31:57,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 89 transitions, 699 flow [2023-08-30 03:31:57,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:31:57,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:31:57,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2023-08-30 03:31:57,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44334160463192723 [2023-08-30 03:31:57,232 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2023-08-30 03:31:57,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2023-08-30 03:31:57,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:31:57,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2023-08-30 03:31:57,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:57,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:57,236 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:57,236 INFO L175 Difference]: Start difference. First operand has 89 places, 74 transitions, 454 flow. Second operand 3 states and 536 transitions. [2023-08-30 03:31:57,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 89 transitions, 699 flow [2023-08-30 03:31:57,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 688 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:31:57,241 INFO L231 Difference]: Finished difference. Result has 91 places, 85 transitions, 616 flow [2023-08-30 03:31:57,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=616, PETRI_PLACES=91, PETRI_TRANSITIONS=85} [2023-08-30 03:31:57,242 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 15 predicate places. [2023-08-30 03:31:57,242 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 85 transitions, 616 flow [2023-08-30 03:31:57,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:57,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:57,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:31:57,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-08-30 03:31:57,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:57,456 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:31:57,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:57,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1944415515, now seen corresponding path program 1 times [2023-08-30 03:31:57,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:57,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304123556] [2023-08-30 03:31:57,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:31:57,458 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:57,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:57,459 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:57,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-08-30 03:31:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:31:57,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 03:31:57,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:57,756 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-30 03:31:57,757 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 [2023-08-30 03:31:57,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:57,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:57,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:57,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304123556] [2023-08-30 03:31:57,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304123556] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:57,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:57,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:31:57,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327269826] [2023-08-30 03:31:57,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:57,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:31:57,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:57,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:31:57,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:31:58,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 403 [2023-08-30 03:31:58,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 85 transitions, 616 flow. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:58,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:31:58,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 403 [2023-08-30 03:31:58,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:31:59,204 INFO L130 PetriNetUnfolder]: 627/1407 cut-off events. [2023-08-30 03:31:59,204 INFO L131 PetriNetUnfolder]: For 3173/3179 co-relation queries the response was YES. [2023-08-30 03:31:59,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5048 conditions, 1407 events. 627/1407 cut-off events. For 3173/3179 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9310 event pairs, 359 based on Foata normal form. 0/1253 useless extension candidates. Maximal degree in co-relation 5030. Up to 755 conditions per place. [2023-08-30 03:31:59,211 INFO L137 encePairwiseOnDemand]: 393/403 looper letters, 60 selfloop transitions, 15 changer transitions 0/90 dead transitions. [2023-08-30 03:31:59,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 90 transitions, 780 flow [2023-08-30 03:31:59,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:31:59,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:31:59,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2023-08-30 03:31:59,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4665012406947891 [2023-08-30 03:31:59,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2023-08-30 03:31:59,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2023-08-30 03:31:59,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:31:59,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2023-08-30 03:31:59,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:59,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:59,219 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:59,219 INFO L175 Difference]: Start difference. First operand has 91 places, 85 transitions, 616 flow. Second operand 3 states and 564 transitions. [2023-08-30 03:31:59,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 90 transitions, 780 flow [2023-08-30 03:31:59,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 90 transitions, 746 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:31:59,226 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 594 flow [2023-08-30 03:31:59,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=88, 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=594, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2023-08-30 03:31:59,227 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 14 predicate places. [2023-08-30 03:31:59,227 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 594 flow [2023-08-30 03:31:59,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:59,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:59,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:31:59,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-08-30 03:31:59,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:59,442 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:31:59,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:59,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1944415516, now seen corresponding path program 1 times [2023-08-30 03:31:59,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:59,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371431872] [2023-08-30 03:31:59,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:31:59,443 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:59,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:59,445 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:59,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-08-30 03:31:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:31:59,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 03:31:59,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:59,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:31:59,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 03:31:59,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:59,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:59,784 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:59,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371431872] [2023-08-30 03:31:59,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371431872] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:59,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:59,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:31:59,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215111337] [2023-08-30 03:31:59,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:59,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:31:59,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:59,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:31:59,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:32:00,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 403 [2023-08-30 03:32:00,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 594 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:00,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:00,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 403 [2023-08-30 03:32:00,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:00,945 INFO L130 PetriNetUnfolder]: 596/1345 cut-off events. [2023-08-30 03:32:00,945 INFO L131 PetriNetUnfolder]: For 3048/3055 co-relation queries the response was YES. [2023-08-30 03:32:00,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4662 conditions, 1345 events. 596/1345 cut-off events. For 3048/3055 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 8900 event pairs, 373 based on Foata normal form. 0/1174 useless extension candidates. Maximal degree in co-relation 4644. Up to 1074 conditions per place. [2023-08-30 03:32:00,951 INFO L137 encePairwiseOnDemand]: 400/403 looper letters, 64 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-08-30 03:32:00,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 81 transitions, 708 flow [2023-08-30 03:32:00,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:32:00,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:32:00,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 556 transitions. [2023-08-30 03:32:00,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4598842018196857 [2023-08-30 03:32:00,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 556 transitions. [2023-08-30 03:32:00,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 556 transitions. [2023-08-30 03:32:00,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:00,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 556 transitions. [2023-08-30 03:32:00,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:00,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:00,964 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:00,965 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 594 flow. Second operand 3 states and 556 transitions. [2023-08-30 03:32:00,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 81 transitions, 708 flow [2023-08-30 03:32:00,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 81 transitions, 678 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:32:00,971 INFO L231 Difference]: Finished difference. Result has 89 places, 81 transitions, 550 flow [2023-08-30 03:32:00,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=87, 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=550, PETRI_PLACES=89, PETRI_TRANSITIONS=81} [2023-08-30 03:32:00,973 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 13 predicate places. [2023-08-30 03:32:00,973 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 81 transitions, 550 flow [2023-08-30 03:32:00,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:00,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:00,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:32:00,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-08-30 03:32:01,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:01,187 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:32:01,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:01,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1944414840, now seen corresponding path program 1 times [2023-08-30 03:32:01,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:01,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351933163] [2023-08-30 03:32:01,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:32:01,188 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:01,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:01,190 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:32:01,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-08-30 03:32:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:32:01,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-30 03:32:01,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:01,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:32:01,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:01,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:01,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351933163] [2023-08-30 03:32:01,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351933163] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:01,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:01,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:32:01,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481028984] [2023-08-30 03:32:01,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:01,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:32:01,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:01,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:32:01,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:32:01,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 403 [2023-08-30 03:32:01,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 81 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:01,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:01,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 403 [2023-08-30 03:32:01,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:03,517 INFO L130 PetriNetUnfolder]: 672/1434 cut-off events. [2023-08-30 03:32:03,517 INFO L131 PetriNetUnfolder]: For 2899/2911 co-relation queries the response was YES. [2023-08-30 03:32:03,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5051 conditions, 1434 events. 672/1434 cut-off events. For 2899/2911 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 9244 event pairs, 163 based on Foata normal form. 112/1458 useless extension candidates. Maximal degree in co-relation 5033. Up to 807 conditions per place. [2023-08-30 03:32:03,522 INFO L137 encePairwiseOnDemand]: 391/403 looper letters, 84 selfloop transitions, 19 changer transitions 0/116 dead transitions. [2023-08-30 03:32:03,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 116 transitions, 1003 flow [2023-08-30 03:32:03,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:32:03,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:32:03,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 561 transitions. [2023-08-30 03:32:03,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4640198511166253 [2023-08-30 03:32:03,524 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 561 transitions. [2023-08-30 03:32:03,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 561 transitions. [2023-08-30 03:32:03,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:03,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 561 transitions. [2023-08-30 03:32:03,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-08-30 03:32:03,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:03,528 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:03,528 INFO L175 Difference]: Start difference. First operand has 89 places, 81 transitions, 550 flow. Second operand 3 states and 561 transitions. [2023-08-30 03:32:03,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 116 transitions, 1003 flow [2023-08-30 03:32:03,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 116 transitions, 1001 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:32:03,535 INFO L231 Difference]: Finished difference. Result has 92 places, 87 transitions, 715 flow [2023-08-30 03:32:03,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=715, PETRI_PLACES=92, PETRI_TRANSITIONS=87} [2023-08-30 03:32:03,535 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 16 predicate places. [2023-08-30 03:32:03,536 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 87 transitions, 715 flow [2023-08-30 03:32:03,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:03,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:03,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:32:03,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-08-30 03:32:03,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:03,748 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:32:03,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:03,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1944414839, now seen corresponding path program 1 times [2023-08-30 03:32:03,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:03,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425710802] [2023-08-30 03:32:03,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:32:03,750 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 [2023-08-30 03:32:03,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:03,750 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:32:03,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-08-30 03:32:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:32:03,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 03:32:03,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:03,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 03:32:03,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:32:03,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:03,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:03,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425710802] [2023-08-30 03:32:03,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425710802] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:03,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:03,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:32:03,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048586327] [2023-08-30 03:32:03,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:03,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:32:03,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:03,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:32:03,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:32:04,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 403 [2023-08-30 03:32:04,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 87 transitions, 715 flow. Second operand has 5 states, 5 states have (on average 168.2) internal successors, (841), 5 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:04,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:04,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 403 [2023-08-30 03:32:04,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:07,188 INFO L130 PetriNetUnfolder]: 638/1268 cut-off events. [2023-08-30 03:32:07,188 INFO L131 PetriNetUnfolder]: For 4144/4172 co-relation queries the response was YES. [2023-08-30 03:32:07,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5310 conditions, 1268 events. 638/1268 cut-off events. For 4144/4172 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7259 event pairs, 125 based on Foata normal form. 228/1425 useless extension candidates. Maximal degree in co-relation 5291. Up to 901 conditions per place. [2023-08-30 03:32:07,192 INFO L137 encePairwiseOnDemand]: 395/403 looper letters, 100 selfloop transitions, 13 changer transitions 2/128 dead transitions. [2023-08-30 03:32:07,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 128 transitions, 1188 flow [2023-08-30 03:32:07,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:32:07,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:32:07,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 912 transitions. [2023-08-30 03:32:07,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45260545905707195 [2023-08-30 03:32:07,195 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 912 transitions. [2023-08-30 03:32:07,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 912 transitions. [2023-08-30 03:32:07,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:07,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 912 transitions. [2023-08-30 03:32:07,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.4) internal successors, (912), 5 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:07,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 403.0) internal successors, (2418), 6 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:07,200 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 403.0) internal successors, (2418), 6 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:07,200 INFO L175 Difference]: Start difference. First operand has 92 places, 87 transitions, 715 flow. Second operand 5 states and 912 transitions. [2023-08-30 03:32:07,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 128 transitions, 1188 flow [2023-08-30 03:32:07,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 128 transitions, 1148 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:32:07,208 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 754 flow [2023-08-30 03:32:07,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=754, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2023-08-30 03:32:07,208 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2023-08-30 03:32:07,209 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 754 flow [2023-08-30 03:32:07,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 168.2) internal successors, (841), 5 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:07,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:07,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:32:07,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-08-30 03:32:07,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:07,421 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:32:07,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:07,422 INFO L85 PathProgramCache]: Analyzing trace with hash -147338319, now seen corresponding path program 1 times [2023-08-30 03:32:07,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:07,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335626940] [2023-08-30 03:32:07,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:32:07,422 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 [2023-08-30 03:32:07,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:07,423 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:32:07,427 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 (20)] Waiting until timeout for monitored process [2023-08-30 03:32:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:32:07,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 03:32:07,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:07,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 03:32:07,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 03:32:07,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:32:07,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 03:32:07,730 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:32:07,730 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 [2023-08-30 03:32:07,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:32:07,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:07,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:07,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335626940] [2023-08-30 03:32:07,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335626940] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:07,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:07,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:32:07,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862699543] [2023-08-30 03:32:07,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:07,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:32:07,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:07,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:32:07,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:32:08,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 403 [2023-08-30 03:32:08,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 754 flow. Second operand has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:08,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:08,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 403 [2023-08-30 03:32:08,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:10,447 INFO L130 PetriNetUnfolder]: 620/1236 cut-off events. [2023-08-30 03:32:10,447 INFO L131 PetriNetUnfolder]: For 4282/4308 co-relation queries the response was YES. [2023-08-30 03:32:10,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5290 conditions, 1236 events. 620/1236 cut-off events. For 4282/4308 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6979 event pairs, 300 based on Foata normal form. 5/1170 useless extension candidates. Maximal degree in co-relation 5269. Up to 684 conditions per place. [2023-08-30 03:32:10,451 INFO L137 encePairwiseOnDemand]: 391/403 looper letters, 72 selfloop transitions, 21 changer transitions 1/109 dead transitions. [2023-08-30 03:32:10,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 109 transitions, 1043 flow [2023-08-30 03:32:10,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:32:10,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:32:10,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1082 transitions. [2023-08-30 03:32:10,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44747725392886684 [2023-08-30 03:32:10,455 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1082 transitions. [2023-08-30 03:32:10,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1082 transitions. [2023-08-30 03:32:10,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:10,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1082 transitions. [2023-08-30 03:32:10,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:10,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 403.0) internal successors, (2821), 7 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:10,460 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 403.0) internal successors, (2821), 7 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:10,460 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 754 flow. Second operand 6 states and 1082 transitions. [2023-08-30 03:32:10,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 109 transitions, 1043 flow [2023-08-30 03:32:10,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 109 transitions, 1024 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 03:32:10,467 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 771 flow [2023-08-30 03:32:10,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=771, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2023-08-30 03:32:10,468 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2023-08-30 03:32:10,468 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 771 flow [2023-08-30 03:32:10,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:10,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:10,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:32:10,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-08-30 03:32:10,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:10,681 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:32:10,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:10,681 INFO L85 PathProgramCache]: Analyzing trace with hash -147338294, now seen corresponding path program 1 times [2023-08-30 03:32:10,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:10,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024491714] [2023-08-30 03:32:10,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:32:10,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:10,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:10,683 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:32:10,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-08-30 03:32:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:32:10,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 03:32:10,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:10,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 03:32:10,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 03:32:10,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:32:10,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 03:32:10,995 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:32:10,996 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 [2023-08-30 03:32:11,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:32:11,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:11,007 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:11,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024491714] [2023-08-30 03:32:11,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024491714] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:11,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:11,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:32:11,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663007123] [2023-08-30 03:32:11,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:11,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:32:11,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:11,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:32:11,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:32:11,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 403 [2023-08-30 03:32:11,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 771 flow. Second operand has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:11,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:11,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 403 [2023-08-30 03:32:11,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:14,126 INFO L130 PetriNetUnfolder]: 614/1223 cut-off events. [2023-08-30 03:32:14,127 INFO L131 PetriNetUnfolder]: For 4563/4589 co-relation queries the response was YES. [2023-08-30 03:32:14,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5288 conditions, 1223 events. 614/1223 cut-off events. For 4563/4589 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6874 event pairs, 173 based on Foata normal form. 7/1159 useless extension candidates. Maximal degree in co-relation 5268. Up to 660 conditions per place. [2023-08-30 03:32:14,132 INFO L137 encePairwiseOnDemand]: 391/403 looper letters, 74 selfloop transitions, 21 changer transitions 1/111 dead transitions. [2023-08-30 03:32:14,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 111 transitions, 1088 flow [2023-08-30 03:32:14,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:32:14,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:32:14,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1084 transitions. [2023-08-30 03:32:14,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44830438378825477 [2023-08-30 03:32:14,135 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1084 transitions. [2023-08-30 03:32:14,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1084 transitions. [2023-08-30 03:32:14,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:14,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1084 transitions. [2023-08-30 03:32:14,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 180.66666666666666) internal successors, (1084), 6 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:14,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 403.0) internal successors, (2821), 7 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:14,154 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 403.0) internal successors, (2821), 7 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:14,154 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 771 flow. Second operand 6 states and 1084 transitions. [2023-08-30 03:32:14,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 111 transitions, 1088 flow [2023-08-30 03:32:14,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 111 transitions, 1059 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 03:32:14,161 INFO L231 Difference]: Finished difference. Result has 96 places, 88 transitions, 780 flow [2023-08-30 03:32:14,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=780, PETRI_PLACES=96, PETRI_TRANSITIONS=88} [2023-08-30 03:32:14,162 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2023-08-30 03:32:14,162 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 88 transitions, 780 flow [2023-08-30 03:32:14,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:14,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:14,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:32:14,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-08-30 03:32:14,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:14,376 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:32:14,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:14,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1828293503, now seen corresponding path program 1 times [2023-08-30 03:32:14,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:14,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273602513] [2023-08-30 03:32:14,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:32:14,377 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:14,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:14,378 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:32:14,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-08-30 03:32:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:32:14,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 03:32:14,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:14,796 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_203| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_203|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_203| (_ bv0 1)) |c_#valid|))) is different from true [2023-08-30 03:32:14,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:32:14,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:14,797 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:14,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273602513] [2023-08-30 03:32:14,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273602513] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:14,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:14,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:32:14,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459615396] [2023-08-30 03:32:14,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:14,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:32:14,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:14,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:32:14,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-08-30 03:32:14,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 403 [2023-08-30 03:32:14,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 88 transitions, 780 flow. Second operand has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:14,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:14,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 403 [2023-08-30 03:32:14,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:16,115 INFO L130 PetriNetUnfolder]: 933/1731 cut-off events. [2023-08-30 03:32:16,116 INFO L131 PetriNetUnfolder]: For 6015/6015 co-relation queries the response was YES. [2023-08-30 03:32:16,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7278 conditions, 1731 events. 933/1731 cut-off events. For 6015/6015 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 9843 event pairs, 391 based on Foata normal form. 0/1500 useless extension candidates. Maximal degree in co-relation 7259. Up to 1001 conditions per place. [2023-08-30 03:32:16,122 INFO L137 encePairwiseOnDemand]: 385/403 looper letters, 73 selfloop transitions, 28 changer transitions 2/109 dead transitions. [2023-08-30 03:32:16,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 109 transitions, 1116 flow [2023-08-30 03:32:16,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:32:16,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:32:16,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 527 transitions. [2023-08-30 03:32:16,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3269230769230769 [2023-08-30 03:32:16,124 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 527 transitions. [2023-08-30 03:32:16,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 527 transitions. [2023-08-30 03:32:16,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:16,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 527 transitions. [2023-08-30 03:32:16,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:16,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 403.0) internal successors, (2015), 5 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:16,127 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 403.0) internal successors, (2015), 5 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:16,127 INFO L175 Difference]: Start difference. First operand has 96 places, 88 transitions, 780 flow. Second operand 4 states and 527 transitions. [2023-08-30 03:32:16,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 109 transitions, 1116 flow [2023-08-30 03:32:16,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 109 transitions, 1071 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 03:32:16,135 INFO L231 Difference]: Finished difference. Result has 96 places, 99 transitions, 909 flow [2023-08-30 03:32:16,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=909, PETRI_PLACES=96, PETRI_TRANSITIONS=99} [2023-08-30 03:32:16,136 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2023-08-30 03:32:16,136 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 99 transitions, 909 flow [2023-08-30 03:32:16,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:16,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:16,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:32:16,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-08-30 03:32:16,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:16,349 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:32:16,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:16,349 INFO L85 PathProgramCache]: Analyzing trace with hash -285876887, now seen corresponding path program 1 times [2023-08-30 03:32:16,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:16,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140701957] [2023-08-30 03:32:16,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:32:16,350 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:16,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:16,351 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:32:16,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-08-30 03:32:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:32:16,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 03:32:16,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:16,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 03:32:16,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 03:32:16,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:32:16,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 03:32:16,714 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:32:16,714 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 [2023-08-30 03:32:16,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:32:16,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:16,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:16,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140701957] [2023-08-30 03:32:16,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140701957] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:16,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:16,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 03:32:16,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513543745] [2023-08-30 03:32:16,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:16,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 03:32:16,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:16,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 03:32:16,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 03:32:17,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 403 [2023-08-30 03:32:17,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 99 transitions, 909 flow. Second operand has 6 states, 6 states have (on average 161.33333333333334) internal successors, (968), 6 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:17,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:17,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 403 [2023-08-30 03:32:17,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:20,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:32:22,364 INFO L130 PetriNetUnfolder]: 822/1574 cut-off events. [2023-08-30 03:32:22,364 INFO L131 PetriNetUnfolder]: For 6358/6399 co-relation queries the response was YES. [2023-08-30 03:32:22,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7236 conditions, 1574 events. 822/1574 cut-off events. For 6358/6399 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 9401 event pairs, 218 based on Foata normal form. 8/1480 useless extension candidates. Maximal degree in co-relation 7217. Up to 609 conditions per place. [2023-08-30 03:32:22,370 INFO L137 encePairwiseOnDemand]: 389/403 looper letters, 104 selfloop transitions, 27 changer transitions 0/144 dead transitions. [2023-08-30 03:32:22,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 144 transitions, 1495 flow [2023-08-30 03:32:22,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 03:32:22,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 03:32:22,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1197 transitions. [2023-08-30 03:32:22,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42431761786600497 [2023-08-30 03:32:22,373 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1197 transitions. [2023-08-30 03:32:22,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1197 transitions. [2023-08-30 03:32:22,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:22,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1197 transitions. [2023-08-30 03:32:22,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:22,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 403.0) internal successors, (3224), 8 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:22,377 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 403.0) internal successors, (3224), 8 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:22,377 INFO L175 Difference]: Start difference. First operand has 96 places, 99 transitions, 909 flow. Second operand 7 states and 1197 transitions. [2023-08-30 03:32:22,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 144 transitions, 1495 flow [2023-08-30 03:32:22,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 144 transitions, 1413 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-08-30 03:32:22,386 INFO L231 Difference]: Finished difference. Result has 95 places, 97 transitions, 886 flow [2023-08-30 03:32:22,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=886, PETRI_PLACES=95, PETRI_TRANSITIONS=97} [2023-08-30 03:32:22,387 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 19 predicate places. [2023-08-30 03:32:22,387 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 97 transitions, 886 flow [2023-08-30 03:32:22,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.33333333333334) internal successors, (968), 6 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:22,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:22,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:32:22,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-08-30 03:32:22,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:22,589 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:32:22,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:22,590 INFO L85 PathProgramCache]: Analyzing trace with hash -272533386, now seen corresponding path program 1 times [2023-08-30 03:32:22,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:22,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [485730228] [2023-08-30 03:32:22,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:32:22,590 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:22,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:22,591 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:32:22,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-08-30 03:32:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:32:22,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 03:32:22,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:22,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 03:32:22,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:32:22,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 03:32:22,937 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:32:22,937 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 [2023-08-30 03:32:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:32:22,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:22,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:22,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [485730228] [2023-08-30 03:32:22,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [485730228] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:22,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:22,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 03:32:22,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325677524] [2023-08-30 03:32:22,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:22,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 03:32:22,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:22,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 03:32:22,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 03:32:23,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 403 [2023-08-30 03:32:23,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 97 transitions, 886 flow. Second operand has 6 states, 6 states have (on average 161.33333333333334) internal successors, (968), 6 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:23,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:23,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 403 [2023-08-30 03:32:23,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:27,068 INFO L130 PetriNetUnfolder]: 844/1644 cut-off events. [2023-08-30 03:32:27,069 INFO L131 PetriNetUnfolder]: For 6361/6385 co-relation queries the response was YES. [2023-08-30 03:32:27,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7528 conditions, 1644 events. 844/1644 cut-off events. For 6361/6385 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 9888 event pairs, 187 based on Foata normal form. 14/1523 useless extension candidates. Maximal degree in co-relation 7510. Up to 841 conditions per place. [2023-08-30 03:32:27,075 INFO L137 encePairwiseOnDemand]: 387/403 looper letters, 123 selfloop transitions, 30 changer transitions 2/166 dead transitions. [2023-08-30 03:32:27,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 166 transitions, 1695 flow [2023-08-30 03:32:27,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 03:32:27,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 03:32:27,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1381 transitions. [2023-08-30 03:32:27,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4283498759305211 [2023-08-30 03:32:27,078 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1381 transitions. [2023-08-30 03:32:27,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1381 transitions. [2023-08-30 03:32:27,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:27,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1381 transitions. [2023-08-30 03:32:27,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 172.625) internal successors, (1381), 8 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:27,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 403.0) internal successors, (3627), 9 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:27,082 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 403.0) internal successors, (3627), 9 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:27,082 INFO L175 Difference]: Start difference. First operand has 95 places, 97 transitions, 886 flow. Second operand 8 states and 1381 transitions. [2023-08-30 03:32:27,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 166 transitions, 1695 flow [2023-08-30 03:32:27,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 166 transitions, 1645 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 03:32:27,090 INFO L231 Difference]: Finished difference. Result has 99 places, 103 transitions, 1026 flow [2023-08-30 03:32:27,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1026, PETRI_PLACES=99, PETRI_TRANSITIONS=103} [2023-08-30 03:32:27,091 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 23 predicate places. [2023-08-30 03:32:27,091 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 103 transitions, 1026 flow [2023-08-30 03:32:27,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.33333333333334) internal successors, (968), 6 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:27,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:27,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:32:27,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-08-30 03:32:27,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:27,306 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:32:27,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:27,306 INFO L85 PathProgramCache]: Analyzing trace with hash -272519436, now seen corresponding path program 2 times [2023-08-30 03:32:27,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:27,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405641837] [2023-08-30 03:32:27,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 03:32:27,307 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:27,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:27,308 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:32:27,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-08-30 03:32:27,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 03:32:27,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:32:27,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 03:32:27,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:27,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 03:32:27,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 03:32:27,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:32:27,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 03:32:27,663 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:32:27,664 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 [2023-08-30 03:32:27,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:32:27,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:27,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:27,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405641837] [2023-08-30 03:32:27,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405641837] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:27,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:27,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 03:32:27,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603214961] [2023-08-30 03:32:27,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:27,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 03:32:27,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:27,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 03:32:27,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 03:32:29,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 403 [2023-08-30 03:32:29,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 103 transitions, 1026 flow. Second operand has 6 states, 6 states have (on average 166.33333333333334) internal successors, (998), 6 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:29,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:29,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 403 [2023-08-30 03:32:29,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:32,095 INFO L130 PetriNetUnfolder]: 816/1594 cut-off events. [2023-08-30 03:32:32,095 INFO L131 PetriNetUnfolder]: For 6859/6916 co-relation queries the response was YES. [2023-08-30 03:32:32,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7487 conditions, 1594 events. 816/1594 cut-off events. For 6859/6916 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 9576 event pairs, 176 based on Foata normal form. 14/1500 useless extension candidates. Maximal degree in co-relation 7468. Up to 604 conditions per place. [2023-08-30 03:32:32,101 INFO L137 encePairwiseOnDemand]: 389/403 looper letters, 113 selfloop transitions, 35 changer transitions 0/163 dead transitions. [2023-08-30 03:32:32,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 163 transitions, 1703 flow [2023-08-30 03:32:32,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 03:32:32,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 03:32:32,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1415 transitions. [2023-08-30 03:32:32,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43889578163771714 [2023-08-30 03:32:32,106 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1415 transitions. [2023-08-30 03:32:32,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1415 transitions. [2023-08-30 03:32:32,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:32,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1415 transitions. [2023-08-30 03:32:32,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 176.875) internal successors, (1415), 8 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:32,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 403.0) internal successors, (3627), 9 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:32,111 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 403.0) internal successors, (3627), 9 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:32,111 INFO L175 Difference]: Start difference. First operand has 99 places, 103 transitions, 1026 flow. Second operand 8 states and 1415 transitions. [2023-08-30 03:32:32,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 163 transitions, 1703 flow [2023-08-30 03:32:32,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 163 transitions, 1667 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 03:32:32,118 INFO L231 Difference]: Finished difference. Result has 99 places, 101 transitions, 1048 flow [2023-08-30 03:32:32,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1048, PETRI_PLACES=99, PETRI_TRANSITIONS=101} [2023-08-30 03:32:32,119 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 23 predicate places. [2023-08-30 03:32:32,119 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 101 transitions, 1048 flow [2023-08-30 03:32:32,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.33333333333334) internal successors, (998), 6 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:32,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:32,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:32:32,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-08-30 03:32:32,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:32,327 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:32:32,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:32,327 INFO L85 PathProgramCache]: Analyzing trace with hash 29352651, now seen corresponding path program 1 times [2023-08-30 03:32:32,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:32,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875542118] [2023-08-30 03:32:32,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:32:32,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:32,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:32,329 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:32:32,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-08-30 03:32:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:32:32,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 03:32:32,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:32,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:32:32,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:32,546 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:32,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875542118] [2023-08-30 03:32:32,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875542118] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:32,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:32,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:32:32,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575978422] [2023-08-30 03:32:32,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:32,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:32:32,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:32,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:32:32,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:32:32,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 403 [2023-08-30 03:32:32,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 101 transitions, 1048 flow. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:32,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:32,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 403 [2023-08-30 03:32:32,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:34,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:32:34,356 INFO L130 PetriNetUnfolder]: 83/237 cut-off events. [2023-08-30 03:32:34,356 INFO L131 PetriNetUnfolder]: For 738/738 co-relation queries the response was YES. [2023-08-30 03:32:34,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 237 events. 83/237 cut-off events. For 738/738 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 916 event pairs, 24 based on Foata normal form. 16/236 useless extension candidates. Maximal degree in co-relation 988. Up to 165 conditions per place. [2023-08-30 03:32:34,357 INFO L137 encePairwiseOnDemand]: 401/403 looper letters, 46 selfloop transitions, 1 changer transitions 1/55 dead transitions. [2023-08-30 03:32:34,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 55 transitions, 588 flow [2023-08-30 03:32:34,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:32:34,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:32:34,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 548 transitions. [2023-08-30 03:32:34,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4532671629445823 [2023-08-30 03:32:34,358 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 548 transitions. [2023-08-30 03:32:34,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 548 transitions. [2023-08-30 03:32:34,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:34,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 548 transitions. [2023-08-30 03:32:34,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:34,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:34,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:34,361 INFO L175 Difference]: Start difference. First operand has 99 places, 101 transitions, 1048 flow. Second operand 3 states and 548 transitions. [2023-08-30 03:32:34,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 55 transitions, 588 flow [2023-08-30 03:32:34,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 55 transitions, 338 flow, removed 35 selfloop flow, removed 20 redundant places. [2023-08-30 03:32:34,363 INFO L231 Difference]: Finished difference. Result has 63 places, 48 transitions, 215 flow [2023-08-30 03:32:34,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=63, PETRI_TRANSITIONS=48} [2023-08-30 03:32:34,364 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -13 predicate places. [2023-08-30 03:32:34,364 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 48 transitions, 215 flow [2023-08-30 03:32:34,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:34,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:34,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:32:34,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-08-30 03:32:34,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:34,577 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:32:34,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:34,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1585567312, now seen corresponding path program 1 times [2023-08-30 03:32:34,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:34,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953614681] [2023-08-30 03:32:34,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:32:34,579 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:34,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:34,580 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:32:34,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-08-30 03:32:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:32:34,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 03:32:34,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:34,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 03:32:34,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:32:34,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:34,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:34,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953614681] [2023-08-30 03:32:34,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [953614681] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:34,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:34,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:32:34,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358595974] [2023-08-30 03:32:34,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:34,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:32:34,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:34,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:32:34,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:32:35,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 403 [2023-08-30 03:32:35,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 48 transitions, 215 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:35,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:35,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 403 [2023-08-30 03:32:35,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:36,332 INFO L130 PetriNetUnfolder]: 83/229 cut-off events. [2023-08-30 03:32:36,332 INFO L131 PetriNetUnfolder]: For 155/155 co-relation queries the response was YES. [2023-08-30 03:32:36,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674 conditions, 229 events. 83/229 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 831 event pairs, 48 based on Foata normal form. 2/216 useless extension candidates. Maximal degree in co-relation 665. Up to 109 conditions per place. [2023-08-30 03:32:36,333 INFO L137 encePairwiseOnDemand]: 394/403 looper letters, 29 selfloop transitions, 16 changer transitions 0/50 dead transitions. [2023-08-30 03:32:36,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 50 transitions, 313 flow [2023-08-30 03:32:36,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:32:36,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:32:36,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 545 transitions. [2023-08-30 03:32:36,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4507857733664185 [2023-08-30 03:32:36,334 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 545 transitions. [2023-08-30 03:32:36,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 545 transitions. [2023-08-30 03:32:36,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:36,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 545 transitions. [2023-08-30 03:32:36,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:36,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:36,336 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:36,336 INFO L175 Difference]: Start difference. First operand has 63 places, 48 transitions, 215 flow. Second operand 3 states and 545 transitions. [2023-08-30 03:32:36,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 50 transitions, 313 flow [2023-08-30 03:32:36,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 50 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:32:36,337 INFO L231 Difference]: Finished difference. Result has 61 places, 46 transitions, 242 flow [2023-08-30 03:32:36,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=61, PETRI_TRANSITIONS=46} [2023-08-30 03:32:36,338 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -15 predicate places. [2023-08-30 03:32:36,338 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 46 transitions, 242 flow [2023-08-30 03:32:36,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:36,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:36,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:32:36,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-08-30 03:32:36,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:36,539 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:32:36,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:36,539 INFO L85 PathProgramCache]: Analyzing trace with hash -958167381, now seen corresponding path program 1 times [2023-08-30 03:32:36,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:36,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305392903] [2023-08-30 03:32:36,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:32:36,540 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:36,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:36,541 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:32:36,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-08-30 03:32:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:32:36,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 03:32:36,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:36,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 03:32:36,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:32:36,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:36,772 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:36,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305392903] [2023-08-30 03:32:36,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305392903] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:36,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:36,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:32:36,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617796218] [2023-08-30 03:32:36,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:36,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:32:36,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:36,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:32:36,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:32:36,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 403 [2023-08-30 03:32:37,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 46 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:37,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:37,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 403 [2023-08-30 03:32:37,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:39,005 INFO L130 PetriNetUnfolder]: 83/223 cut-off events. [2023-08-30 03:32:39,005 INFO L131 PetriNetUnfolder]: For 181/181 co-relation queries the response was YES. [2023-08-30 03:32:39,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 223 events. 83/223 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 786 event pairs, 48 based on Foata normal form. 2/210 useless extension candidates. Maximal degree in co-relation 687. Up to 109 conditions per place. [2023-08-30 03:32:39,006 INFO L137 encePairwiseOnDemand]: 394/403 looper letters, 29 selfloop transitions, 16 changer transitions 0/48 dead transitions. [2023-08-30 03:32:39,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 48 transitions, 340 flow [2023-08-30 03:32:39,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:32:39,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:32:39,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2023-08-30 03:32:39,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44334160463192723 [2023-08-30 03:32:39,007 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2023-08-30 03:32:39,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2023-08-30 03:32:39,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:39,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2023-08-30 03:32:39,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:39,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:39,010 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:39,010 INFO L175 Difference]: Start difference. First operand has 61 places, 46 transitions, 242 flow. Second operand 3 states and 536 transitions. [2023-08-30 03:32:39,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 48 transitions, 340 flow [2023-08-30 03:32:39,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 48 transitions, 308 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:32:39,012 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 238 flow [2023-08-30 03:32:39,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2023-08-30 03:32:39,013 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -17 predicate places. [2023-08-30 03:32:39,013 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 238 flow [2023-08-30 03:32:39,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:39,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:39,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:32:39,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-08-30 03:32:39,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:39,226 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:32:39,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:39,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1023316911, now seen corresponding path program 1 times [2023-08-30 03:32:39,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:39,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552135516] [2023-08-30 03:32:39,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:32:39,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:39,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:39,228 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:32:39,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-08-30 03:32:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:32:39,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-30 03:32:39,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:39,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 03:32:39,833 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 [2023-08-30 03:32:39,908 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 [2023-08-30 03:32:39,958 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:32:39,958 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 [2023-08-30 03:32:40,042 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 [2023-08-30 03:32:40,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:32:40,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:40,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:40,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552135516] [2023-08-30 03:32:40,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552135516] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:40,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:40,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 03:32:40,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136923810] [2023-08-30 03:32:40,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:40,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 03:32:40,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:40,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 03:32:40,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 03:32:41,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 403 [2023-08-30 03:32:41,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 238 flow. Second operand has 8 states, 8 states have (on average 138.125) internal successors, (1105), 8 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:41,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:41,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 403 [2023-08-30 03:32:41,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:42,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:32:46,350 INFO L130 PetriNetUnfolder]: 121/321 cut-off events. [2023-08-30 03:32:46,351 INFO L131 PetriNetUnfolder]: For 235/235 co-relation queries the response was YES. [2023-08-30 03:32:46,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1005 conditions, 321 events. 121/321 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1378 event pairs, 3 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 996. Up to 107 conditions per place. [2023-08-30 03:32:46,352 INFO L137 encePairwiseOnDemand]: 384/403 looper letters, 47 selfloop transitions, 43 changer transitions 0/92 dead transitions. [2023-08-30 03:32:46,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 92 transitions, 649 flow [2023-08-30 03:32:46,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 03:32:46,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 03:32:46,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1441 transitions. [2023-08-30 03:32:46,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575682382133995 [2023-08-30 03:32:46,354 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1441 transitions. [2023-08-30 03:32:46,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1441 transitions. [2023-08-30 03:32:46,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:46,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1441 transitions. [2023-08-30 03:32:46,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 144.1) internal successors, (1441), 10 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:46,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 403.0) internal successors, (4433), 11 states have internal predecessors, (4433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:46,365 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 403.0) internal successors, (4433), 11 states have internal predecessors, (4433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:46,365 INFO L175 Difference]: Start difference. First operand has 59 places, 44 transitions, 238 flow. Second operand 10 states and 1441 transitions. [2023-08-30 03:32:46,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 92 transitions, 649 flow [2023-08-30 03:32:46,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 92 transitions, 595 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:32:46,366 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 541 flow [2023-08-30 03:32:46,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=541, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2023-08-30 03:32:46,367 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -6 predicate places. [2023-08-30 03:32:46,367 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 541 flow [2023-08-30 03:32:46,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 138.125) internal successors, (1105), 8 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:46,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:46,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:32:46,381 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 (29)] Ended with exit code 0 [2023-08-30 03:32:46,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:46,573 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:32:46,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:46,573 INFO L85 PathProgramCache]: Analyzing trace with hash 706307409, now seen corresponding path program 1 times [2023-08-30 03:32:46,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:46,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910389512] [2023-08-30 03:32:46,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:32:46,574 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:46,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:46,575 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:32:46,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-08-30 03:32:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:32:47,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-30 03:32:47,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:47,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 03:32:47,094 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:32:47,094 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 [2023-08-30 03:32:47,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:32:47,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:47,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:47,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910389512] [2023-08-30 03:32:47,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910389512] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:47,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:47,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 03:32:47,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827145300] [2023-08-30 03:32:47,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:47,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 03:32:47,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:47,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 03:32:47,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 03:32:48,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 403 [2023-08-30 03:32:48,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 541 flow. Second operand has 8 states, 8 states have (on average 149.125) internal successors, (1193), 8 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:48,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:48,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 403 [2023-08-30 03:32:48,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:51,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:32:54,470 INFO L130 PetriNetUnfolder]: 120/318 cut-off events. [2023-08-30 03:32:54,470 INFO L131 PetriNetUnfolder]: For 503/503 co-relation queries the response was YES. [2023-08-30 03:32:54,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1175 conditions, 318 events. 120/318 cut-off events. For 503/503 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1357 event pairs, 29 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 1161. Up to 125 conditions per place. [2023-08-30 03:32:54,475 INFO L137 encePairwiseOnDemand]: 391/403 looper letters, 50 selfloop transitions, 32 changer transitions 0/84 dead transitions. [2023-08-30 03:32:54,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 84 transitions, 740 flow [2023-08-30 03:32:54,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 03:32:54,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 03:32:54,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1083 transitions. [2023-08-30 03:32:54,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3839064161644807 [2023-08-30 03:32:54,478 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1083 transitions. [2023-08-30 03:32:54,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1083 transitions. [2023-08-30 03:32:54,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:54,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1083 transitions. [2023-08-30 03:32:54,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.71428571428572) internal successors, (1083), 7 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:54,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 403.0) internal successors, (3224), 8 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:54,482 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 403.0) internal successors, (3224), 8 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:54,482 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 541 flow. Second operand 7 states and 1083 transitions. [2023-08-30 03:32:54,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 84 transitions, 740 flow [2023-08-30 03:32:54,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 84 transitions, 713 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-30 03:32:54,484 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 549 flow [2023-08-30 03:32:54,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=549, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2023-08-30 03:32:54,485 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -3 predicate places. [2023-08-30 03:32:54,485 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 549 flow [2023-08-30 03:32:54,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 149.125) internal successors, (1193), 8 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:54,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:54,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:32:54,500 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 (30)] Forceful destruction successful, exit code 0 [2023-08-30 03:32:54,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:54,689 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:32:54,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:54,689 INFO L85 PathProgramCache]: Analyzing trace with hash 971625504, now seen corresponding path program 1 times [2023-08-30 03:32:54,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:54,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069370815] [2023-08-30 03:32:54,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:32:54,690 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:54,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:54,691 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:32:54,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-08-30 03:32:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:32:54,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-30 03:32:54,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:55,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:32:55,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:55,140 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:55,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069370815] [2023-08-30 03:32:55,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069370815] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:55,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:55,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 03:32:55,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104103298] [2023-08-30 03:32:55,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:55,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 03:32:55,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:55,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 03:32:55,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 03:32:55,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 403 [2023-08-30 03:32:55,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 549 flow. Second operand has 6 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:55,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:55,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 403 [2023-08-30 03:32:55,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:56,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:32:58,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:32:59,336 INFO L130 PetriNetUnfolder]: 128/340 cut-off events. [2023-08-30 03:32:59,337 INFO L131 PetriNetUnfolder]: For 666/666 co-relation queries the response was YES. [2023-08-30 03:32:59,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1285 conditions, 340 events. 128/340 cut-off events. For 666/666 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1578 event pairs, 6 based on Foata normal form. 7/338 useless extension candidates. Maximal degree in co-relation 1271. Up to 192 conditions per place. [2023-08-30 03:32:59,338 INFO L137 encePairwiseOnDemand]: 389/403 looper letters, 62 selfloop transitions, 21 changer transitions 0/85 dead transitions. [2023-08-30 03:32:59,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 85 transitions, 797 flow [2023-08-30 03:32:59,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 03:32:59,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 03:32:59,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1157 transitions. [2023-08-30 03:32:59,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2023-08-30 03:32:59,340 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1157 transitions. [2023-08-30 03:32:59,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1157 transitions. [2023-08-30 03:32:59,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:59,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1157 transitions. [2023-08-30 03:32:59,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 165.28571428571428) internal successors, (1157), 7 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:59,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 403.0) internal successors, (3224), 8 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:59,343 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 403.0) internal successors, (3224), 8 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:59,343 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 549 flow. Second operand 7 states and 1157 transitions. [2023-08-30 03:32:59,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 85 transitions, 797 flow [2023-08-30 03:32:59,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 85 transitions, 738 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-30 03:32:59,346 INFO L231 Difference]: Finished difference. Result has 72 places, 66 transitions, 575 flow [2023-08-30 03:32:59,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=575, PETRI_PLACES=72, PETRI_TRANSITIONS=66} [2023-08-30 03:32:59,347 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -4 predicate places. [2023-08-30 03:32:59,347 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 66 transitions, 575 flow [2023-08-30 03:32:59,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:59,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:59,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:32:59,361 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 (31)] Forceful destruction successful, exit code 0 [2023-08-30 03:32:59,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:59,560 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:32:59,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:59,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1915902939, now seen corresponding path program 1 times [2023-08-30 03:32:59,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:59,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900576235] [2023-08-30 03:32:59,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:32:59,561 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:59,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:59,562 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:32:59,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-08-30 03:33:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:33:00,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 77 conjunts are in the unsatisfiable core [2023-08-30 03:33:00,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:33:00,115 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 03:33:00,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-30 03:33:00,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-30 03:33:00,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:00,161 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 63 treesize of output 51 [2023-08-30 03:33:00,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:33:00,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:00,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:00,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:00,673 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:33:00,674 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:33:00,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-30 03:33:00,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:00,775 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 71 treesize of output 67 [2023-08-30 03:33:00,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 30 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-30 03:33:01,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 8 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 58 [2023-08-30 03:33:01,205 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 03:33:01,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-30 03:33:01,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:01,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:01,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:01,465 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:33:01,466 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:33:01,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 209 [2023-08-30 03:33:01,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:33:01,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:33:01,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:33:01,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900576235] [2023-08-30 03:33:01,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900576235] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:33:01,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:33:01,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 03:33:01,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341869962] [2023-08-30 03:33:01,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:33:01,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 03:33:01,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:33:01,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 03:33:01,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-08-30 03:33:06,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 403 [2023-08-30 03:33:06,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 66 transitions, 575 flow. Second operand has 13 states, 13 states have (on average 133.30769230769232) internal successors, (1733), 13 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:06,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:33:06,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 403 [2023-08-30 03:33:06,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:07,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:33:13,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:33:19,926 INFO L130 PetriNetUnfolder]: 152/420 cut-off events. [2023-08-30 03:33:19,926 INFO L131 PetriNetUnfolder]: For 1102/1102 co-relation queries the response was YES. [2023-08-30 03:33:19,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1746 conditions, 420 events. 152/420 cut-off events. For 1102/1102 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2129 event pairs, 27 based on Foata normal form. 0/409 useless extension candidates. Maximal degree in co-relation 1731. Up to 277 conditions per place. [2023-08-30 03:33:19,928 INFO L137 encePairwiseOnDemand]: 386/403 looper letters, 93 selfloop transitions, 51 changer transitions 0/146 dead transitions. [2023-08-30 03:33:19,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 146 transitions, 1445 flow [2023-08-30 03:33:19,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 03:33:19,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 03:33:19,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1945 transitions. [2023-08-30 03:33:19,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3447359092520383 [2023-08-30 03:33:19,931 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1945 transitions. [2023-08-30 03:33:19,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1945 transitions. [2023-08-30 03:33:19,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:19,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1945 transitions. [2023-08-30 03:33:19,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 138.92857142857142) internal successors, (1945), 14 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:19,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 403.0) internal successors, (6045), 15 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:19,936 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 403.0) internal successors, (6045), 15 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:19,937 INFO L175 Difference]: Start difference. First operand has 72 places, 66 transitions, 575 flow. Second operand 14 states and 1945 transitions. [2023-08-30 03:33:19,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 146 transitions, 1445 flow [2023-08-30 03:33:19,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 146 transitions, 1324 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 03:33:19,941 INFO L231 Difference]: Finished difference. Result has 88 places, 103 transitions, 1073 flow [2023-08-30 03:33:19,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1073, PETRI_PLACES=88, PETRI_TRANSITIONS=103} [2023-08-30 03:33:19,941 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 12 predicate places. [2023-08-30 03:33:19,941 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 103 transitions, 1073 flow [2023-08-30 03:33:19,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 133.30769230769232) internal successors, (1733), 13 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:19,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:19,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:33:19,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-08-30 03:33:20,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:33:20,145 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2023-08-30 03:33:20,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:20,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1836302855, now seen corresponding path program 2 times [2023-08-30 03:33:20,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:20,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630163842] [2023-08-30 03:33:20,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 03:33:20,146 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:33:20,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:20,147 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:33:20,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-08-30 03:33:20,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 03:33:20,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-08-30 03:33:20,617 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 03:33:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 03:33:20,996 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-08-30 03:33:20,997 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 03:33:20,997 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK (52 of 53 remaining) [2023-08-30 03:33:20,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK (51 of 53 remaining) [2023-08-30 03:33:20,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 53 remaining) [2023-08-30 03:33:20,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 53 remaining) [2023-08-30 03:33:21,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 53 remaining) [2023-08-30 03:33:21,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 53 remaining) [2023-08-30 03:33:21,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 53 remaining) [2023-08-30 03:33:21,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 53 remaining) [2023-08-30 03:33:21,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 53 remaining) [2023-08-30 03:33:21,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 53 remaining) [2023-08-30 03:33:21,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 53 remaining) [2023-08-30 03:33:21,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 53 remaining) [2023-08-30 03:33:21,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 53 remaining) [2023-08-30 03:33:21,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 53 remaining) [2023-08-30 03:33:21,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 53 remaining) [2023-08-30 03:33:21,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 53 remaining) [2023-08-30 03:33:21,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 53 remaining) [2023-08-30 03:33:21,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 53 remaining) [2023-08-30 03:33:21,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 53 remaining) [2023-08-30 03:33:21,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 53 remaining) [2023-08-30 03:33:21,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 53 remaining) [2023-08-30 03:33:21,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 53 remaining) [2023-08-30 03:33:21,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK (30 of 53 remaining) [2023-08-30 03:33:21,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 53 remaining) [2023-08-30 03:33:21,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 53 remaining) [2023-08-30 03:33:21,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 53 remaining) [2023-08-30 03:33:21,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 53 remaining) [2023-08-30 03:33:21,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK (25 of 53 remaining) [2023-08-30 03:33:21,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 53 remaining) [2023-08-30 03:33:21,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 53 remaining) [2023-08-30 03:33:21,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK (22 of 53 remaining) [2023-08-30 03:33:21,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 53 remaining) [2023-08-30 03:33:21,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 53 remaining) [2023-08-30 03:33:21,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 53 remaining) [2023-08-30 03:33:21,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 53 remaining) [2023-08-30 03:33:21,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 53 remaining) [2023-08-30 03:33:21,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 53 remaining) [2023-08-30 03:33:21,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 53 remaining) [2023-08-30 03:33:21,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 53 remaining) [2023-08-30 03:33:21,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 53 remaining) [2023-08-30 03:33:21,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 53 remaining) [2023-08-30 03:33:21,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 53 remaining) [2023-08-30 03:33:21,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 53 remaining) [2023-08-30 03:33:21,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 53 remaining) [2023-08-30 03:33:21,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 53 remaining) [2023-08-30 03:33:21,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 53 remaining) [2023-08-30 03:33:21,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 53 remaining) [2023-08-30 03:33:21,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 53 remaining) [2023-08-30 03:33:21,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 53 remaining) [2023-08-30 03:33:21,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 53 remaining) [2023-08-30 03:33:21,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 53 remaining) [2023-08-30 03:33:21,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 53 remaining) [2023-08-30 03:33:21,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 53 remaining) [2023-08-30 03:33:21,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-08-30 03:33:21,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:33:21,213 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, 1, 1, 1, 1] [2023-08-30 03:33:21,218 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 03:33:21,218 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 03:33:21,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:33:21 BasicIcfg [2023-08-30 03:33:21,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 03:33:21,281 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 03:33:21,281 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 03:33:21,281 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 03:33:21,282 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:21:19" (3/4) ... [2023-08-30 03:33:21,284 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-30 03:33:21,285 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 03:33:21,285 INFO L158 Benchmark]: Toolchain (without parser) took 724001.49ms. Allocated memory was 81.8MB in the beginning and 180.4MB in the end (delta: 98.6MB). Free memory was 59.4MB in the beginning and 33.0MB in the end (delta: 26.4MB). Peak memory consumption was 122.9MB. Max. memory is 16.1GB. [2023-08-30 03:33:21,285 INFO L158 Benchmark]: CDTParser took 0.90ms. Allocated memory is still 65.0MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 03:33:21,290 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1102.80ms. Allocated memory is still 81.8MB. Free memory was 59.2MB in the beginning and 30.7MB in the end (delta: 28.4MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. [2023-08-30 03:33:21,290 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.74ms. Allocated memory is still 81.8MB. Free memory was 30.7MB in the beginning and 49.6MB in the end (delta: -18.8MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2023-08-30 03:33:21,290 INFO L158 Benchmark]: Boogie Preprocessor took 44.91ms. Allocated memory is still 81.8MB. Free memory was 49.6MB in the beginning and 45.9MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 03:33:21,291 INFO L158 Benchmark]: RCFGBuilder took 951.67ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 45.9MB in the beginning and 49.9MB in the end (delta: -4.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-08-30 03:33:21,291 INFO L158 Benchmark]: TraceAbstraction took 721815.22ms. Allocated memory was 102.8MB in the beginning and 180.4MB in the end (delta: 77.6MB). Free memory was 49.4MB in the beginning and 33.0MB in the end (delta: 16.4MB). Peak memory consumption was 93.9MB. Max. memory is 16.1GB. [2023-08-30 03:33:21,291 INFO L158 Benchmark]: Witness Printer took 3.46ms. Allocated memory is still 180.4MB. Free memory is still 33.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 03:33:21,292 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90ms. Allocated memory is still 65.0MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1102.80ms. Allocated memory is still 81.8MB. Free memory was 59.2MB in the beginning and 30.7MB in the end (delta: 28.4MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.74ms. Allocated memory is still 81.8MB. Free memory was 30.7MB in the beginning and 49.6MB in the end (delta: -18.8MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.91ms. Allocated memory is still 81.8MB. Free memory was 49.6MB in the beginning and 45.9MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 951.67ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 45.9MB in the beginning and 49.9MB in the end (delta: -4.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 721815.22ms. Allocated memory was 102.8MB in the beginning and 180.4MB in the end (delta: 77.6MB). Free memory was 49.4MB in the beginning and 33.0MB in the end (delta: 16.4MB). Peak memory consumption was 93.9MB. Max. memory is 16.1GB. * Witness Printer took 3.46ms. Allocated memory is still 180.4MB. Free memory is still 33.0MB. 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: 597.6s, 187 PlacesBefore, 76 PlacesAfterwards, 187 TransitionsBefore, 73 TransitionsAfterwards, 4576 CoEnabledTransitionPairs, 7 FixpointIterations, 110 TrivialSequentialCompositions, 89 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 10 ConcurrentYvCompositions, 3 ChoiceCompositions, 214 TotalNumberOfCompositions, 15254 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5131, independent: 4770, independent conditional: 0, independent unconditional: 4770, dependent: 361, dependent conditional: 0, dependent unconditional: 361, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2314, independent: 2245, independent conditional: 0, independent unconditional: 2245, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5131, independent: 2525, independent conditional: 0, independent unconditional: 2525, dependent: 292, dependent conditional: 0, dependent unconditional: 292, unknown: 2314, unknown conditional: 0, unknown unconditional: 2314] , Statistics on independence cache: Total cache size (in pairs): 196, Positive cache size: 166, Positive conditional cache size: 0, Positive unconditional cache size: 166, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, 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; [L1731] CALL, EXPR 0 my_drv_init() [L1725] 0 return 0; [L1731] RET, EXPR 0 my_drv_init() [L1731] 0 int ret = my_drv_init(); [L1732] COND TRUE 0 ret==0 [L1733] 0 int probe_ret; [L1734] 0 struct my_data data; [L1735] CALL, EXPR 0 my_drv_probe(&data) [L1704] 0 struct device *d = &data->dev; [L1706] 0 data->shared.a = 0 [L1707] 0 data->shared.b = 0 [L1708] 0 int res = __VERIFIER_nondet_int(); [L1709] COND FALSE 0 !(\read(res)) [L1711] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [arg={7:24}, d={7:24}, data={7:0}, data={7:0}, pthread_create(&t1, ((void *)0), my_callback, (void *)d)=-1, res=0, t1={3:0}, t2={4:0}] [L1689] 1 struct device *dev = (struct device*)arg; [L1690] 1 struct my_data *data; [L1691] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1693] 1 data->shared.a = 1 VAL [__mptr={7:24}, arg={7:24}, arg={7:24}, data={7:0}, dev={7:24}, t1={3:0}, t2={4:0}] [L1712] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [__mptr={7:24}, arg={7:24}, arg={7:24}, d={7:24}, data={7:0}, data={7:0}, data={7:0}, dev={7:24}, pthread_create(&t2, ((void *)0), my_callback, (void *)d)=0, res=0, t1={3:0}, t2={4:0}] [L1713] 0 return 0; [L1735] RET, EXPR 0 my_drv_probe(&data) [L1735] 0 probe_ret = my_drv_probe(&data) VAL [__mptr={7:24}, arg={7:24}, arg={7:24}, data={7:0}, data={7:0}, dev={7:24}, my_drv_probe(&data)=0, probe_ret=0, ret=0, t1={3:0}, t2={4:0}] [L1696] EXPR 1 data->shared.b [L1696] 1 int lb = data->shared.b; [L1689] 2 struct device *dev = (struct device*)arg; [L1690] 2 struct my_data *data; [L1691] 2 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 2 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1693] 2 data->shared.a = 1 VAL [__mptr={7:24}, arg={7:24}, arg={7:24}, data={7:0}, dev={7:24}, lb=0, t1={3:0}, t2={4:0}] [L1696] EXPR 2 data->shared.b [L1696] 2 int lb = data->shared.b; [L1699] 1 data->shared.b = lb + 1 [L1701] 1 return 0; [L1736] COND TRUE 0 probe_ret==0 [L1737] CALL 0 my_drv_disconnect(&data) [L1719] 0 void *status; VAL [\result={0:0}, __mptr={7:24}, arg={7:24}, arg={7:24}, data={7:0}, data={7:0}, data={7:0}, dev={7:24}, lb=0, status={15:0}, t1={3:0}, t2={4:0}] [L1720] 0 \read(t1) VAL [\read(t1)=-1, \result={0:0}, __mptr={7:24}, arg={7:24}, arg={7:24}, data={7:0}, data={7:0}, data={7:0}, dev={7:24}, lb=0, status={15:0}, t1={3:0}, t2={4:0}] [L1720] FCALL, JOIN 1 pthread_join(t1, &status) VAL [\read(t1)=-1, \result={0:0}, __mptr={7:24}, arg={7:24}, arg={7:24}, data={7:0}, data={7:0}, data={7:0}, dev={7:24}, lb=0, pthread_join(t1, &status)={0:0}, status={15:0}, t1={3:0}, t2={4:0}] [L1699] 2 data->shared.b = lb + 1 [L1701] 2 return 0; [L1721] 0 \read(t2) VAL [\read(t2)=0, \result={0:0}, __mptr={7:24}, arg={7:24}, arg={7:24}, data={7:0}, data={7:0}, data={7:0}, dev={7:24}, lb=0, status={15:0}, t1={3:0}, t2={4:0}] [L1721] FCALL, JOIN 2 pthread_join(t2, &status) VAL [\read(t2)=0, \result={0:0}, __mptr={7:24}, arg={7:24}, arg={7:24}, data={7:0}, data={7:0}, data={7:0}, dev={7:24}, lb=0, pthread_join(t2, &status)={0:0}, status={15:0}, t1={3:0}, t2={4:0}] [L1737] RET 0 my_drv_disconnect(&data) [L1738] EXPR 0 data.shared.a [L1738] CALL 0 ldv_assert(data.shared.a==1) [L1675] COND FALSE 0 !(!expression) [L1738] RET 0 ldv_assert(data.shared.a==1) [L1739] EXPR 0 data.shared.b [L1739] 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={7:24}, arg={7:24}, arg={7:24}, data={7:0}, dev={7:24}, expression=0, lb=0, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 1730]: 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: -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: 1711]: 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: 1712]: 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, 202 locations, 53 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: 721.6s, OverallIterations: 32, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 105.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 597.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8210 SdHoareTripleChecker+Valid, 98.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5279 mSDsluCounter, 2377 SdHoareTripleChecker+Invalid, 93.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 147 IncrementalHoareTripleChecker+Unchecked, 1695 mSDsCounter, 407 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16009 IncrementalHoareTripleChecker+Invalid, 16563 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 407 mSolverCounterUnsat, 682 mSDtfsCounter, 16009 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 237 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1073occurred in iteration=31, InterpolantAutomatonStates: 153, 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, 3.4s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 244 NumberOfCodeBlocks, 244 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 195 ConstructedInterpolants, 7 QuantifiedInterpolants, 3835 SizeOfPredicates, 227 NumberOfNonLiveVariables, 5323 ConjunctsInSsa, 472 ConjunctsInUnsatCore, 31 InterpolantComputations, 31 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 [2023-08-30 03:33:21,345 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