./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/ldv-races/race-2_5-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_5-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 c62a6a6ca02e763ce9adebe2a1f0301f133cb0abc0bbd9fb473585b57a9c78f2 --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 03:22:53,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:22:53,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:22:53,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:22:53,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:22:53,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:22:53,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:22:53,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:22:53,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:22:53,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:22:53,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:22:53,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:22:53,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:22:53,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:22:53,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:22:53,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:22:53,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:22:53,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:22:53,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:22:53,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:22:53,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:22:53,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:22:53,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:22:53,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:22:53,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:22:53,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:22:53,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:22:53,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:22:53,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:22:53,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:22:53,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:22:53,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:22:53,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:22:53,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:22:53,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:22:53,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:22:53,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:22:53,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:22:53,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:22:53,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:22:53,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:22:53,267 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 03:22:53,305 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:22:53,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:22:53,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:22:53,307 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:22:53,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:22:53,308 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:22:53,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:22:53,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:22:53,309 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:22:53,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:22:53,311 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:22:53,311 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:22:53,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:22:53,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:22:53,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:22:53,312 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:22:53,312 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:22:53,312 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:22:53,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:22:53,313 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:22:53,313 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:22:53,313 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:22:53,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:22:53,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:22:53,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:22:53,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:22:53,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:22:53,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:22:53,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 03:22:53,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 03:22:53,315 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:22:53,316 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:22:53,316 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:22:53,316 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:22:53,316 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c62a6a6ca02e763ce9adebe2a1f0301f133cb0abc0bbd9fb473585b57a9c78f2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:22:53,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:22:53,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:22:53,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:22:53,645 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:22:53,645 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:22:53,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_5-container_of.i [2023-08-30 03:22:54,880 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:22:55,176 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:22:55,180 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_5-container_of.i [2023-08-30 03:22:55,200 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ecdaef4d/9770edc1ee9a4e7ab40a372a0988a308/FLAGaaa43854f [2023-08-30 03:22:55,212 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ecdaef4d/9770edc1ee9a4e7ab40a372a0988a308 [2023-08-30 03:22:55,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:22:55,218 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:22:55,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:22:55,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:22:55,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:22:55,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:22:55" (1/1) ... [2023-08-30 03:22:55,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4281aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:55, skipping insertion in model container [2023-08-30 03:22:55,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:22:55" (1/1) ... [2023-08-30 03:22:55,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:22:55,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:22:55,410 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 03:22:55,794 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_5-container_of.i[75002,75015] [2023-08-30 03:22:55,847 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:22:55,859 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 03:22:55,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@71f9dfa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:55, skipping insertion in model container [2023-08-30 03:22:55,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:22:55,860 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-30 03:22:55,862 INFO L158 Benchmark]: Toolchain (without parser) took 643.27ms. Allocated memory is still 75.5MB. Free memory was 49.5MB in the beginning and 48.0MB in the end (delta: 1.6MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2023-08-30 03:22:55,862 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory is still 36.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 03:22:55,863 INFO L158 Benchmark]: CACSL2BoogieTranslator took 641.21ms. Allocated memory is still 75.5MB. Free memory was 49.5MB in the beginning and 48.0MB in the end (delta: 1.5MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2023-08-30 03:22:55,864 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory is still 36.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 641.21ms. Allocated memory is still 75.5MB. Free memory was 49.5MB in the beginning and 48.0MB in the end (delta: 1.5MB). Peak memory consumption was 16.7MB. 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_5-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 c62a6a6ca02e763ce9adebe2a1f0301f133cb0abc0bbd9fb473585b57a9c78f2 --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 03:22:57,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:22:57,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:22:57,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:22:57,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:22:57,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:22:57,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:22:57,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:22:57,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:22:57,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:22:57,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:22:57,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:22:57,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:22:57,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:22:57,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:22:57,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:22:57,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:22:57,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:22:57,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:22:57,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:22:57,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:22:57,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:22:57,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:22:57,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:22:57,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:22:57,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:22:57,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:22:57,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:22:57,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:22:57,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:22:57,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:22:57,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:22:57,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:22:57,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:22:57,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:22:57,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:22:57,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:22:57,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:22:57,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:22:57,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:22:57,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:22:57,739 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 03:22:57,770 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:22:57,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:22:57,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:22:57,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:22:57,772 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:22:57,772 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:22:57,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:22:57,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:22:57,773 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:22:57,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:22:57,774 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:22:57,775 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:22:57,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:22:57,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:22:57,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:22:57,775 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:22:57,776 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:22:57,776 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:22:57,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:22:57,776 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:22:57,776 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 03:22:57,777 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 03:22:57,777 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:22:57,777 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:22:57,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:22:57,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:22:57,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:22:57,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:22:57,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:22:57,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:22:57,778 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 03:22:57,779 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 03:22:57,779 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:22:57,779 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:22:57,779 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:22:57,780 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 03:22:57,780 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:22:57,780 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c62a6a6ca02e763ce9adebe2a1f0301f133cb0abc0bbd9fb473585b57a9c78f2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:22:58,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:22:58,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:22:58,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:22:58,115 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:22:58,115 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:22:58,117 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_5-container_of.i [2023-08-30 03:22:59,211 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:22:59,571 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:22:59,572 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_5-container_of.i [2023-08-30 03:22:59,596 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cc45ea70/b0d45b856f2542e4bf807d2012677b31/FLAG3d40bcde6 [2023-08-30 03:22:59,608 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cc45ea70/b0d45b856f2542e4bf807d2012677b31 [2023-08-30 03:22:59,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:22:59,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:22:59,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:22:59,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:22:59,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:22:59,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:22:59" (1/1) ... [2023-08-30 03:22:59,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@328bc356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:59, skipping insertion in model container [2023-08-30 03:22:59,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:22:59" (1/1) ... [2023-08-30 03:22:59,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:22:59,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:22:59,856 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 03:23:00,363 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_5-container_of.i[75002,75015] [2023-08-30 03:23:00,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:23:00,422 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-30 03:23:00,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:23:00,433 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 03:23:00,463 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_5-container_of.i[75002,75015] [2023-08-30 03:23:00,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:23:00,495 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 03:23:00,504 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 03:23:00,542 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_5-container_of.i[75002,75015] [2023-08-30 03:23:00,564 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:23:00,661 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 03:23:00,662 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 03:23:00,662 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 03:23:00,667 INFO L208 MainTranslator]: Completed translation [2023-08-30 03:23:00,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:00 WrapperNode [2023-08-30 03:23:00,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:23:00,668 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 03:23:00,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 03:23:00,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 03:23:00,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:00" (1/1) ... [2023-08-30 03:23:00,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:00" (1/1) ... [2023-08-30 03:23:00,739 INFO L138 Inliner]: procedures = 473, calls = 63, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 142 [2023-08-30 03:23:00,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 03:23:00,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 03:23:00,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 03:23:00,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 03:23:00,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:00" (1/1) ... [2023-08-30 03:23:00,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:00" (1/1) ... [2023-08-30 03:23:00,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:00" (1/1) ... [2023-08-30 03:23:00,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:00" (1/1) ... [2023-08-30 03:23:00,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:00" (1/1) ... [2023-08-30 03:23:00,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:00" (1/1) ... [2023-08-30 03:23:00,804 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:00" (1/1) ... [2023-08-30 03:23:00,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:00" (1/1) ... [2023-08-30 03:23:00,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 03:23:00,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 03:23:00,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 03:23:00,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 03:23:00,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:00" (1/1) ... [2023-08-30 03:23:00,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:23:00,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 03:23:00,854 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 03:23:00,877 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 03:23:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 03:23:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 03:23:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 03:23:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-30 03:23:00,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 03:23:00,891 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 03:23:00,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 03:23:00,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 03:23:00,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 03:23:00,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 03:23:00,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 03:23:00,892 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-30 03:23:00,892 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-30 03:23:00,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 03:23:00,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 03:23:00,894 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 03:23:01,286 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 03:23:01,289 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 03:23:01,743 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 03:23:01,812 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 03:23:01,813 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 03:23:01,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:23:01 BoogieIcfgContainer [2023-08-30 03:23:01,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 03:23:01,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 03:23:01,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 03:23:01,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 03:23:01,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:22:59" (1/3) ... [2023-08-30 03:23:01,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114eb33d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:23:01, skipping insertion in model container [2023-08-30 03:23:01,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:00" (2/3) ... [2023-08-30 03:23:01,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114eb33d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:23:01, skipping insertion in model container [2023-08-30 03:23:01,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:23:01" (3/3) ... [2023-08-30 03:23:01,824 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_5-container_of.i [2023-08-30 03:23:01,839 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 03:23:01,840 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 49 error locations. [2023-08-30 03:23:01,840 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 03:23:01,925 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 03:23:01,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 209 transitions, 434 flow [2023-08-30 03:23:02,091 INFO L130 PetriNetUnfolder]: 8/259 cut-off events. [2023-08-30 03:23:02,091 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 03:23:02,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 259 events. 8/259 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 685 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 130. Up to 4 conditions per place. [2023-08-30 03:23:02,099 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 209 transitions, 434 flow [2023-08-30 03:23:02,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 207 transitions, 426 flow [2023-08-30 03:23:02,113 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 03:23:02,124 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 207 transitions, 426 flow [2023-08-30 03:23:02,128 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 207 transitions, 426 flow [2023-08-30 03:23:02,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 207 transitions, 426 flow [2023-08-30 03:23:02,173 INFO L130 PetriNetUnfolder]: 8/259 cut-off events. [2023-08-30 03:23:02,174 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 03:23:02,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 259 events. 8/259 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 679 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 130. Up to 4 conditions per place. [2023-08-30 03:23:02,179 INFO L119 LiptonReduction]: Number of co-enabled transitions 6080 [2023-08-30 03:24:16,820 WARN L222 SmtUtils]: Spent 28.35s on a formula simplification that was a NOOP. DAG size: 186 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:24:41,510 WARN L222 SmtUtils]: Spent 24.69s on a formula simplification that was a NOOP. DAG size: 182 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:25:09,206 WARN L222 SmtUtils]: Spent 27.69s on a formula simplification that was a NOOP. DAG size: 186 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:25:34,442 WARN L222 SmtUtils]: Spent 25.23s on a formula simplification that was a NOOP. DAG size: 182 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:27:49,025 WARN L222 SmtUtils]: Spent 1.72m on a formula simplification. DAG size of input: 256 DAG size of output: 248 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:28:37,111 WARN L222 SmtUtils]: Spent 48.08s 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 03:30:36,289 WARN L222 SmtUtils]: Spent 1.99m on a formula simplification. DAG size of input: 256 DAG size of output: 248 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:31:29,811 WARN L222 SmtUtils]: Spent 53.52s 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 03:31:51,450 WARN L222 SmtUtils]: Spent 21.61s on a formula simplification. DAG size of input: 215 DAG size of output: 214 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:32:02,896 WARN L222 SmtUtils]: Spent 11.44s on a formula simplification that was a NOOP. DAG size: 208 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:32:29,341 WARN L222 SmtUtils]: Spent 26.44s on a formula simplification. DAG size of input: 215 DAG size of output: 214 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:32:42,349 WARN L222 SmtUtils]: Spent 13.00s on a formula simplification that was a NOOP. DAG size: 208 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:32:42,375 INFO L134 LiptonReduction]: Checked pairs total: 24687 [2023-08-30 03:32:42,375 INFO L136 LiptonReduction]: Total number of compositions: 217 [2023-08-30 03:32:42,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 03:32:42,390 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;@4c3900c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 03:32:42,390 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2023-08-30 03:32:42,392 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 03:32:42,392 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:32:42,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:42,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 03:32:42,393 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:32:42,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:42,397 INFO L85 PathProgramCache]: Analyzing trace with hash 754, now seen corresponding path program 1 times [2023-08-30 03:32:42,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:42,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617483133] [2023-08-30 03:32:42,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:32:42,409 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 03:32:42,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:42,410 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 03:32:42,412 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 03:32:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:32:42,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-30 03:32:42,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:42,531 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 03:32:42,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:42,532 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:42,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617483133] [2023-08-30 03:32:42,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617483133] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:42,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:42,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 03:32:42,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727617962] [2023-08-30 03:32:42,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:42,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 03:32:42,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:42,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 03:32:42,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 03:32:42,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 426 [2023-08-30 03:32:42,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 194 flow. Second operand has 2 states, 2 states have (on average 191.5) internal successors, (383), 2 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:42,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:42,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 426 [2023-08-30 03:32:42,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:43,500 INFO L130 PetriNetUnfolder]: 469/986 cut-off events. [2023-08-30 03:32:43,500 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 03:32:43,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1854 conditions, 986 events. 469/986 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6313 event pairs, 468 based on Foata normal form. 0/736 useless extension candidates. Maximal degree in co-relation 1584. Up to 850 conditions per place. [2023-08-30 03:32:43,509 INFO L137 encePairwiseOnDemand]: 411/426 looper letters, 50 selfloop transitions, 0 changer transitions 0/76 dead transitions. [2023-08-30 03:32:43,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 76 transitions, 264 flow [2023-08-30 03:32:43,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 03:32:43,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 03:32:43,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 447 transitions. [2023-08-30 03:32:43,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5246478873239436 [2023-08-30 03:32:43,531 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 447 transitions. [2023-08-30 03:32:43,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 447 transitions. [2023-08-30 03:32:43,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:43,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 447 transitions. [2023-08-30 03:32:43,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 223.5) internal successors, (447), 2 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:43,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 426.0) internal successors, (1278), 3 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:43,547 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 426.0) internal successors, (1278), 3 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:43,549 INFO L175 Difference]: Start difference. First operand has 94 places, 91 transitions, 194 flow. Second operand 2 states and 447 transitions. [2023-08-30 03:32:43,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 76 transitions, 264 flow [2023-08-30 03:32:43,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 256 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 03:32:43,556 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 156 flow [2023-08-30 03:32:43,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=156, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2023-08-30 03:32:43,561 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -16 predicate places. [2023-08-30 03:32:43,562 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 156 flow [2023-08-30 03:32:43,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 191.5) internal successors, (383), 2 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:43,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:43,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 03:32:43,573 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 (2)] Ended with exit code 0 [2023-08-30 03:32:43,769 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 03:32:43,769 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:32:43,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:43,770 INFO L85 PathProgramCache]: Analyzing trace with hash 24240, now seen corresponding path program 1 times [2023-08-30 03:32:43,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:43,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988342903] [2023-08-30 03:32:43,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:32:43,771 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 03:32:43,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:43,773 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 03:32:43,775 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 03:32:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:32:43,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 03:32:43,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:43,951 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 03:32:43,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:43,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:43,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988342903] [2023-08-30 03:32:43,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988342903] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:43,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:43,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:32:43,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545210058] [2023-08-30 03:32:43,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:43,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:32:43,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:43,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:32:43,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:32:43,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 426 [2023-08-30 03:32:43,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:43,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:43,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 426 [2023-08-30 03:32:43,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:45,530 INFO L130 PetriNetUnfolder]: 468/996 cut-off events. [2023-08-30 03:32:45,530 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 03:32:45,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1862 conditions, 996 events. 468/996 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6081 event pairs, 468 based on Foata normal form. 0/743 useless extension candidates. Maximal degree in co-relation 1859. Up to 845 conditions per place. [2023-08-30 03:32:45,539 INFO L137 encePairwiseOnDemand]: 422/426 looper letters, 61 selfloop transitions, 1 changer transitions 1/89 dead transitions. [2023-08-30 03:32:45,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 89 transitions, 308 flow [2023-08-30 03:32:45,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:32:45,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:32:45,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 627 transitions. [2023-08-30 03:32:45,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49061032863849763 [2023-08-30 03:32:45,547 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 627 transitions. [2023-08-30 03:32:45,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 627 transitions. [2023-08-30 03:32:45,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:45,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 627 transitions. [2023-08-30 03:32:45,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:45,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:45,555 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:45,556 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 156 flow. Second operand 3 states and 627 transitions. [2023-08-30 03:32:45,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 89 transitions, 308 flow [2023-08-30 03:32:45,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 89 transitions, 308 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 03:32:45,560 INFO L231 Difference]: Finished difference. Result has 81 places, 76 transitions, 165 flow [2023-08-30 03:32:45,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=81, PETRI_TRANSITIONS=76} [2023-08-30 03:32:45,561 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -13 predicate places. [2023-08-30 03:32:45,561 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 76 transitions, 165 flow [2023-08-30 03:32:45,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:45,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:45,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:32:45,576 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 03:32:45,773 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 03:32:45,774 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:32:45,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:45,774 INFO L85 PathProgramCache]: Analyzing trace with hash 750974, now seen corresponding path program 1 times [2023-08-30 03:32:45,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:45,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658247436] [2023-08-30 03:32:45,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:32:45,775 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 03:32:45,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:45,777 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 03:32:45,779 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 03:32:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:32:45,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 03:32:45,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:45,944 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 03:32:45,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:32:45,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:45,962 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:45,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658247436] [2023-08-30 03:32:45,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658247436] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:45,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:45,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:32:45,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007673351] [2023-08-30 03:32:45,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:45,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:32:45,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:45,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:32:45,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:32:46,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 426 [2023-08-30 03:32:46,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:46,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:46,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 426 [2023-08-30 03:32:46,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:47,372 INFO L130 PetriNetUnfolder]: 372/832 cut-off events. [2023-08-30 03:32:47,372 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 03:32:47,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1585 conditions, 832 events. 372/832 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5074 event pairs, 213 based on Foata normal form. 17/664 useless extension candidates. Maximal degree in co-relation 1580. Up to 382 conditions per place. [2023-08-30 03:32:47,382 INFO L137 encePairwiseOnDemand]: 416/426 looper letters, 57 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2023-08-30 03:32:47,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 89 transitions, 317 flow [2023-08-30 03:32:47,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:32:47,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:32:47,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 610 transitions. [2023-08-30 03:32:47,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47730829420970267 [2023-08-30 03:32:47,386 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 610 transitions. [2023-08-30 03:32:47,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 610 transitions. [2023-08-30 03:32:47,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:47,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 610 transitions. [2023-08-30 03:32:47,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:47,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:47,391 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:47,391 INFO L175 Difference]: Start difference. First operand has 81 places, 76 transitions, 165 flow. Second operand 3 states and 610 transitions. [2023-08-30 03:32:47,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 89 transitions, 317 flow [2023-08-30 03:32:47,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 89 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:32:47,394 INFO L231 Difference]: Finished difference. Result has 83 places, 77 transitions, 194 flow [2023-08-30 03:32:47,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=83, PETRI_TRANSITIONS=77} [2023-08-30 03:32:47,395 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -11 predicate places. [2023-08-30 03:32:47,395 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 194 flow [2023-08-30 03:32:47,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:47,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:47,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:32:47,409 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 03:32:47,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:47,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:32:47,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:47,608 INFO L85 PathProgramCache]: Analyzing trace with hash 750937, now seen corresponding path program 1 times [2023-08-30 03:32:47,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:47,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517120783] [2023-08-30 03:32:47,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:32:47,610 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 03:32:47,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:47,611 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:32:47,648 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 03:32:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:32:47,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 03:32:47,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:47,750 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 03:32:47,757 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 03:32:47,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:47,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:47,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517120783] [2023-08-30 03:32:47,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517120783] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:47,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:47,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:32:47,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093720821] [2023-08-30 03:32:47,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:47,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:32:47,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:47,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:32:47,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:32:48,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 426 [2023-08-30 03:32:48,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 77 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:48,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:48,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 426 [2023-08-30 03:32:48,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:49,286 INFO L130 PetriNetUnfolder]: 372/814 cut-off events. [2023-08-30 03:32:49,286 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-30 03:32:49,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1705 conditions, 814 events. 372/814 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4830 event pairs, 324 based on Foata normal form. 0/649 useless extension candidates. Maximal degree in co-relation 1699. Up to 608 conditions per place. [2023-08-30 03:32:49,291 INFO L137 encePairwiseOnDemand]: 420/426 looper letters, 51 selfloop transitions, 6 changer transitions 0/82 dead transitions. [2023-08-30 03:32:49,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 318 flow [2023-08-30 03:32:49,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:32:49,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:32:49,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 579 transitions. [2023-08-30 03:32:49,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45305164319248825 [2023-08-30 03:32:49,295 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 579 transitions. [2023-08-30 03:32:49,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 579 transitions. [2023-08-30 03:32:49,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:49,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 579 transitions. [2023-08-30 03:32:49,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:49,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:49,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:49,300 INFO L175 Difference]: Start difference. First operand has 83 places, 77 transitions, 194 flow. Second operand 3 states and 579 transitions. [2023-08-30 03:32:49,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 318 flow [2023-08-30 03:32:49,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 82 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:32:49,304 INFO L231 Difference]: Finished difference. Result has 83 places, 76 transitions, 198 flow [2023-08-30 03:32:49,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=83, PETRI_TRANSITIONS=76} [2023-08-30 03:32:49,305 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -11 predicate places. [2023-08-30 03:32:49,305 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 76 transitions, 198 flow [2023-08-30 03:32:49,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:49,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:49,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:32:49,320 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 03:32:49,517 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 03:32:49,518 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:32:49,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:49,518 INFO L85 PathProgramCache]: Analyzing trace with hash 744043, now seen corresponding path program 1 times [2023-08-30 03:32:49,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:49,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489778591] [2023-08-30 03:32:49,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:32:49,520 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 03:32:49,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:49,521 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 03:32:49,524 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 03:32:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:32:49,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 03:32:49,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:49,742 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-30 03:32:49,743 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 03:32:49,770 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 03:32:49,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:49,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:49,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489778591] [2023-08-30 03:32:49,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489778591] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:49,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:49,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:32:49,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959803486] [2023-08-30 03:32:49,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:49,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:32:49,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:49,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:32:49,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:32:50,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 426 [2023-08-30 03:32:50,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 198 flow. Second operand has 3 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 03:32:50,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:50,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 426 [2023-08-30 03:32:50,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:51,185 INFO L130 PetriNetUnfolder]: 342/768 cut-off events. [2023-08-30 03:32:51,186 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-08-30 03:32:51,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1560 conditions, 768 events. 342/768 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4579 event pairs, 294 based on Foata normal form. 0/617 useless extension candidates. Maximal degree in co-relation 1554. Up to 539 conditions per place. [2023-08-30 03:32:51,190 INFO L137 encePairwiseOnDemand]: 415/426 looper letters, 50 selfloop transitions, 9 changer transitions 0/85 dead transitions. [2023-08-30 03:32:51,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 85 transitions, 334 flow [2023-08-30 03:32:51,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:32:51,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:32:51,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 622 transitions. [2023-08-30 03:32:51,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.486697965571205 [2023-08-30 03:32:51,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 622 transitions. [2023-08-30 03:32:51,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 622 transitions. [2023-08-30 03:32:51,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:51,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 622 transitions. [2023-08-30 03:32:51,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:51,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:51,201 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:51,201 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 198 flow. Second operand 3 states and 622 transitions. [2023-08-30 03:32:51,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 85 transitions, 334 flow [2023-08-30 03:32:51,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 85 transitions, 322 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:32:51,207 INFO L231 Difference]: Finished difference. Result has 81 places, 74 transitions, 200 flow [2023-08-30 03:32:51,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=79, 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=3, PETRI_FLOW=200, PETRI_PLACES=81, PETRI_TRANSITIONS=74} [2023-08-30 03:32:51,210 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -13 predicate places. [2023-08-30 03:32:51,211 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 74 transitions, 200 flow [2023-08-30 03:32:51,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 03:32:51,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:51,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:32:51,227 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 03:32:51,424 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 03:32:51,424 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:32:51,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:51,425 INFO L85 PathProgramCache]: Analyzing trace with hash 744042, now seen corresponding path program 1 times [2023-08-30 03:32:51,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:51,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368139938] [2023-08-30 03:32:51,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:32:51,426 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 03:32:51,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:51,427 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 03:32:51,467 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 03:32:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:32:51,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 03:32:51,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:51,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:32:51,637 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 03:32:51,666 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 03:32:51,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:51,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:51,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368139938] [2023-08-30 03:32:51,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [368139938] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:51,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:51,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:32:51,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396033230] [2023-08-30 03:32:51,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:51,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:32:51,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:51,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:32:51,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:32:51,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 426 [2023-08-30 03:32:51,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 74 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:51,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:51,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 426 [2023-08-30 03:32:51,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:53,030 INFO L130 PetriNetUnfolder]: 336/746 cut-off events. [2023-08-30 03:32:53,031 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-08-30 03:32:53,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1527 conditions, 746 events. 336/746 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4424 event pairs, 336 based on Foata normal form. 0/607 useless extension candidates. Maximal degree in co-relation 1521. Up to 624 conditions per place. [2023-08-30 03:32:53,034 INFO L137 encePairwiseOnDemand]: 422/426 looper letters, 44 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-08-30 03:32:53,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 72 transitions, 288 flow [2023-08-30 03:32:53,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:32:53,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:32:53,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-08-30 03:32:53,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780907668231612 [2023-08-30 03:32:53,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-08-30 03:32:53,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-08-30 03:32:53,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:53,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-08-30 03:32:53,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:53,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:53,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:53,043 INFO L175 Difference]: Start difference. First operand has 81 places, 74 transitions, 200 flow. Second operand 3 states and 611 transitions. [2023-08-30 03:32:53,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 72 transitions, 288 flow [2023-08-30 03:32:53,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 72 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:32:53,045 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 182 flow [2023-08-30 03:32:53,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2023-08-30 03:32:53,046 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -15 predicate places. [2023-08-30 03:32:53,046 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 182 flow [2023-08-30 03:32:53,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:53,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:53,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:32:53,059 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 03:32:53,257 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 03:32:53,257 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:32:53,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:53,258 INFO L85 PathProgramCache]: Analyzing trace with hash 23066080, now seen corresponding path program 1 times [2023-08-30 03:32:53,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:53,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461757317] [2023-08-30 03:32:53,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:32:53,259 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 03:32:53,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:53,260 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 03:32:53,262 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 03:32:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:32:53,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 03:32:53,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:53,404 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 03:32:53,430 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 03:32:53,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:53,430 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:53,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461757317] [2023-08-30 03:32:53,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461757317] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:53,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:53,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:32:53,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470034609] [2023-08-30 03:32:53,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:53,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:32:53,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:53,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:32:53,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:32:54,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 426 [2023-08-30 03:32:54,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 182 flow. Second operand has 5 states, 5 states have (on average 180.8) internal successors, (904), 5 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:54,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:54,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 426 [2023-08-30 03:32:54,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:56,708 INFO L130 PetriNetUnfolder]: 576/1242 cut-off events. [2023-08-30 03:32:56,708 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2023-08-30 03:32:56,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2462 conditions, 1242 events. 576/1242 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7795 event pairs, 224 based on Foata normal form. 0/1017 useless extension candidates. Maximal degree in co-relation 2456. Up to 683 conditions per place. [2023-08-30 03:32:56,714 INFO L137 encePairwiseOnDemand]: 409/426 looper letters, 78 selfloop transitions, 16 changer transitions 0/115 dead transitions. [2023-08-30 03:32:56,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 115 transitions, 473 flow [2023-08-30 03:32:56,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:32:56,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:32:56,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1179 transitions. [2023-08-30 03:32:56,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4612676056338028 [2023-08-30 03:32:56,718 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1179 transitions. [2023-08-30 03:32:56,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1179 transitions. [2023-08-30 03:32:56,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:56,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1179 transitions. [2023-08-30 03:32:56,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 196.5) internal successors, (1179), 6 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:56,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 426.0) internal successors, (2982), 7 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:56,727 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 426.0) internal successors, (2982), 7 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:56,727 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 182 flow. Second operand 6 states and 1179 transitions. [2023-08-30 03:32:56,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 115 transitions, 473 flow [2023-08-30 03:32:56,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 115 transitions, 471 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:32:56,730 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 274 flow [2023-08-30 03:32:56,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2023-08-30 03:32:56,731 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -7 predicate places. [2023-08-30 03:32:56,731 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 274 flow [2023-08-30 03:32:56,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 180.8) internal successors, (904), 5 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:56,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:56,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:32:56,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-08-30 03:32:56,946 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 03:32:56,946 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:32:56,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:56,947 INFO L85 PathProgramCache]: Analyzing trace with hash 23066081, now seen corresponding path program 1 times [2023-08-30 03:32:56,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:56,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442352701] [2023-08-30 03:32:56,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:32:56,947 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 03:32:56,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:56,948 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 03:32:56,949 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 (9)] Waiting until timeout for monitored process [2023-08-30 03:32:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:32:57,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 03:32:57,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:57,094 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 5 [2023-08-30 03:32:57,145 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 03:32:57,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:57,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:57,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442352701] [2023-08-30 03:32:57,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442352701] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:57,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:57,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:32:57,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115704275] [2023-08-30 03:32:57,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:57,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:32:57,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:57,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:32:57,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:32:57,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 426 [2023-08-30 03:32:57,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 274 flow. Second operand has 5 states, 5 states have (on average 183.8) internal successors, (919), 5 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:57,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:57,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 426 [2023-08-30 03:32:57,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:00,402 INFO L130 PetriNetUnfolder]: 403/929 cut-off events. [2023-08-30 03:33:00,402 INFO L131 PetriNetUnfolder]: For 349/365 co-relation queries the response was YES. [2023-08-30 03:33:00,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2177 conditions, 929 events. 403/929 cut-off events. For 349/365 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5962 event pairs, 43 based on Foata normal form. 146/965 useless extension candidates. Maximal degree in co-relation 2168. Up to 398 conditions per place. [2023-08-30 03:33:00,415 INFO L137 encePairwiseOnDemand]: 416/426 looper letters, 75 selfloop transitions, 11 changer transitions 2/113 dead transitions. [2023-08-30 03:33:00,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 113 transitions, 539 flow [2023-08-30 03:33:00,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:33:00,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:33:00,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1004 transitions. [2023-08-30 03:33:00,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47136150234741786 [2023-08-30 03:33:00,419 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1004 transitions. [2023-08-30 03:33:00,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1004 transitions. [2023-08-30 03:33:00,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:00,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1004 transitions. [2023-08-30 03:33:00,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 200.8) internal successors, (1004), 5 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:00,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:00,425 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:00,425 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 274 flow. Second operand 5 states and 1004 transitions. [2023-08-30 03:33:00,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 113 transitions, 539 flow [2023-08-30 03:33:00,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 113 transitions, 539 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 03:33:00,429 INFO L231 Difference]: Finished difference. Result has 93 places, 82 transitions, 339 flow [2023-08-30 03:33:00,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=339, PETRI_PLACES=93, PETRI_TRANSITIONS=82} [2023-08-30 03:33:00,430 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -1 predicate places. [2023-08-30 03:33:00,430 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 82 transitions, 339 flow [2023-08-30 03:33:00,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 183.8) internal successors, (919), 5 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:00,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:00,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 03:33:00,446 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 03:33:00,642 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 03:33:00,643 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:33:00,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:00,643 INFO L85 PathProgramCache]: Analyzing trace with hash 721699576, now seen corresponding path program 1 times [2023-08-30 03:33:00,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:00,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500642636] [2023-08-30 03:33:00,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:33:00,644 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 03:33:00,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:00,645 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 03:33:00,649 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 03:33:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:33:00,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 03:33:00,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:33:00,846 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 03:33:00,907 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 03:33:00,908 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 03:33:00,932 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 03:33:00,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:33:00,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:33:00,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1500642636] [2023-08-30 03:33:00,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1500642636] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:33:00,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:33:00,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:33:00,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765178047] [2023-08-30 03:33:00,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:33:00,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:33:00,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:33:00,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:33:00,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:33:01,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 426 [2023-08-30 03:33:01,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 82 transitions, 339 flow. Second operand has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:01,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:33:01,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 426 [2023-08-30 03:33:01,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:02,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:33:03,353 INFO L130 PetriNetUnfolder]: 1072/2127 cut-off events. [2023-08-30 03:33:03,353 INFO L131 PetriNetUnfolder]: For 1611/1625 co-relation queries the response was YES. [2023-08-30 03:33:03,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5387 conditions, 2127 events. 1072/2127 cut-off events. For 1611/1625 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 13481 event pairs, 654 based on Foata normal form. 0/1808 useless extension candidates. Maximal degree in co-relation 5375. Up to 1498 conditions per place. [2023-08-30 03:33:03,364 INFO L137 encePairwiseOnDemand]: 417/426 looper letters, 66 selfloop transitions, 11 changer transitions 0/97 dead transitions. [2023-08-30 03:33:03,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 97 transitions, 549 flow [2023-08-30 03:33:03,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:33:03,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:33:03,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2023-08-30 03:33:03,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624413145539906 [2023-08-30 03:33:03,366 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2023-08-30 03:33:03,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2023-08-30 03:33:03,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:03,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2023-08-30 03:33:03,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:03,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:03,371 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:03,371 INFO L175 Difference]: Start difference. First operand has 93 places, 82 transitions, 339 flow. Second operand 3 states and 591 transitions. [2023-08-30 03:33:03,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 97 transitions, 549 flow [2023-08-30 03:33:03,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 97 transitions, 520 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-30 03:33:03,383 INFO L231 Difference]: Finished difference. Result has 93 places, 89 transitions, 401 flow [2023-08-30 03:33:03,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=401, PETRI_PLACES=93, PETRI_TRANSITIONS=89} [2023-08-30 03:33:03,384 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -1 predicate places. [2023-08-30 03:33:03,384 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 89 transitions, 401 flow [2023-08-30 03:33:03,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:03,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:03,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:33:03,401 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 03:33:03,597 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 03:33:03,598 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:33:03,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:03,598 INFO L85 PathProgramCache]: Analyzing trace with hash 897851394, now seen corresponding path program 1 times [2023-08-30 03:33:03,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:03,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134076217] [2023-08-30 03:33:03,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:33:03,599 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 03:33:03,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:03,599 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 03:33:03,601 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 03:33:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:33:03,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 03:33:03,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:33:03,834 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:33:03,835 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:33:03,835 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:33:03,838 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 03:33:03,896 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 03:33:03,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:33:03,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:33:03,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134076217] [2023-08-30 03:33:03,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134076217] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:33:03,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:33:03,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:33:03,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040287692] [2023-08-30 03:33:03,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:33:03,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:33:03,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:33:03,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:33:03,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:33:04,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 426 [2023-08-30 03:33:04,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 89 transitions, 401 flow. Second operand has 3 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 03:33:04,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:33:04,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 426 [2023-08-30 03:33:04,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:06,702 INFO L130 PetriNetUnfolder]: 1384/2605 cut-off events. [2023-08-30 03:33:06,703 INFO L131 PetriNetUnfolder]: For 2971/2985 co-relation queries the response was YES. [2023-08-30 03:33:06,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7616 conditions, 2605 events. 1384/2605 cut-off events. For 2971/2985 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 16109 event pairs, 826 based on Foata normal form. 0/2318 useless extension candidates. Maximal degree in co-relation 7604. Up to 1949 conditions per place. [2023-08-30 03:33:06,720 INFO L137 encePairwiseOnDemand]: 418/426 looper letters, 75 selfloop transitions, 14 changer transitions 0/108 dead transitions. [2023-08-30 03:33:06,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 108 transitions, 684 flow [2023-08-30 03:33:06,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:33:06,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:33:06,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 592 transitions. [2023-08-30 03:33:06,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46322378716744916 [2023-08-30 03:33:06,732 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 592 transitions. [2023-08-30 03:33:06,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 592 transitions. [2023-08-30 03:33:06,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:06,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 592 transitions. [2023-08-30 03:33:06,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:06,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:06,736 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:06,736 INFO L175 Difference]: Start difference. First operand has 93 places, 89 transitions, 401 flow. Second operand 3 states and 592 transitions. [2023-08-30 03:33:06,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 108 transitions, 684 flow [2023-08-30 03:33:06,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 108 transitions, 648 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:33:06,747 INFO L231 Difference]: Finished difference. Result has 94 places, 99 transitions, 503 flow [2023-08-30 03:33:06,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=503, PETRI_PLACES=94, PETRI_TRANSITIONS=99} [2023-08-30 03:33:06,748 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 0 predicate places. [2023-08-30 03:33:06,748 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 99 transitions, 503 flow [2023-08-30 03:33:06,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 03:33:06,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:06,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:33:06,759 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 03:33:06,953 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 03:33:06,953 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:33:06,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:06,953 INFO L85 PathProgramCache]: Analyzing trace with hash 691401799, now seen corresponding path program 1 times [2023-08-30 03:33:06,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:06,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050290498] [2023-08-30 03:33:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:33:06,954 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 03:33:06,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:06,955 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 03:33:06,956 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 03:33:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:33:07,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 03:33:07,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:33:07,102 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 03:33:07,133 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 03:33:07,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:33:07,134 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:33:07,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050290498] [2023-08-30 03:33:07,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050290498] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:33:07,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:33:07,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:33:07,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875438273] [2023-08-30 03:33:07,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:33:07,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:33:07,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:33:07,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:33:07,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:33:07,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 426 [2023-08-30 03:33:07,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 99 transitions, 503 flow. Second operand has 5 states, 5 states have (on average 181.2) internal successors, (906), 5 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:07,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:33:07,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 426 [2023-08-30 03:33:07,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:10,926 INFO L130 PetriNetUnfolder]: 1246/2503 cut-off events. [2023-08-30 03:33:10,926 INFO L131 PetriNetUnfolder]: For 2821/2981 co-relation queries the response was YES. [2023-08-30 03:33:10,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7374 conditions, 2503 events. 1246/2503 cut-off events. For 2821/2981 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 17212 event pairs, 283 based on Foata normal form. 251/2525 useless extension candidates. Maximal degree in co-relation 7361. Up to 1317 conditions per place. [2023-08-30 03:33:10,941 INFO L137 encePairwiseOnDemand]: 409/426 looper letters, 104 selfloop transitions, 24 changer transitions 0/157 dead transitions. [2023-08-30 03:33:10,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 157 transitions, 1006 flow [2023-08-30 03:33:10,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:33:10,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:33:10,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1187 transitions. [2023-08-30 03:33:10,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643974960876369 [2023-08-30 03:33:10,946 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1187 transitions. [2023-08-30 03:33:10,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1187 transitions. [2023-08-30 03:33:10,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:10,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1187 transitions. [2023-08-30 03:33:10,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 197.83333333333334) internal successors, (1187), 6 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:10,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 426.0) internal successors, (2982), 7 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:10,952 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 426.0) internal successors, (2982), 7 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:10,952 INFO L175 Difference]: Start difference. First operand has 94 places, 99 transitions, 503 flow. Second operand 6 states and 1187 transitions. [2023-08-30 03:33:10,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 157 transitions, 1006 flow [2023-08-30 03:33:10,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 157 transitions, 990 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:33:10,960 INFO L231 Difference]: Finished difference. Result has 102 places, 107 transitions, 661 flow [2023-08-30 03:33:10,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=661, PETRI_PLACES=102, PETRI_TRANSITIONS=107} [2023-08-30 03:33:10,960 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 8 predicate places. [2023-08-30 03:33:10,961 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 107 transitions, 661 flow [2023-08-30 03:33:10,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.2) internal successors, (906), 5 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:10,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:10,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:33:10,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-08-30 03:33:11,173 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 03:33:11,173 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:33:11,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:11,173 INFO L85 PathProgramCache]: Analyzing trace with hash 691401800, now seen corresponding path program 1 times [2023-08-30 03:33:11,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:11,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12558797] [2023-08-30 03:33:11,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:33:11,174 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 03:33:11,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:11,176 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 03:33:11,177 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 03:33:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:33:11,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 03:33:11,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:33:11,344 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 03:33:11,413 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 03:33:11,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:33:11,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:33:11,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12558797] [2023-08-30 03:33:11,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12558797] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:33:11,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:33:11,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:33:11,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679762781] [2023-08-30 03:33:11,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:33:11,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:33:11,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:33:11,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:33:11,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:33:12,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 426 [2023-08-30 03:33:12,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 107 transitions, 661 flow. Second operand has 5 states, 5 states have (on average 184.2) internal successors, (921), 5 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:12,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:33:12,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 426 [2023-08-30 03:33:12,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:15,407 INFO L130 PetriNetUnfolder]: 1131/2263 cut-off events. [2023-08-30 03:33:15,407 INFO L131 PetriNetUnfolder]: For 4075/4252 co-relation queries the response was YES. [2023-08-30 03:33:15,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7150 conditions, 2263 events. 1131/2263 cut-off events. For 4075/4252 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 15472 event pairs, 250 based on Foata normal form. 352/2385 useless extension candidates. Maximal degree in co-relation 7134. Up to 1102 conditions per place. [2023-08-30 03:33:15,419 INFO L137 encePairwiseOnDemand]: 416/426 looper letters, 86 selfloop transitions, 17 changer transitions 2/144 dead transitions. [2023-08-30 03:33:15,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 144 transitions, 1022 flow [2023-08-30 03:33:15,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:33:15,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:33:15,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1001 transitions. [2023-08-30 03:33:15,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4699530516431925 [2023-08-30 03:33:15,422 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1001 transitions. [2023-08-30 03:33:15,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1001 transitions. [2023-08-30 03:33:15,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:15,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1001 transitions. [2023-08-30 03:33:15,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 200.2) internal successors, (1001), 5 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:15,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:15,428 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:15,429 INFO L175 Difference]: Start difference. First operand has 102 places, 107 transitions, 661 flow. Second operand 5 states and 1001 transitions. [2023-08-30 03:33:15,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 144 transitions, 1022 flow [2023-08-30 03:33:15,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 144 transitions, 1018 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:33:15,439 INFO L231 Difference]: Finished difference. Result has 107 places, 114 transitions, 758 flow [2023-08-30 03:33:15,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=758, PETRI_PLACES=107, PETRI_TRANSITIONS=114} [2023-08-30 03:33:15,440 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 13 predicate places. [2023-08-30 03:33:15,440 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 114 transitions, 758 flow [2023-08-30 03:33:15,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 184.2) internal successors, (921), 5 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:15,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:15,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:33:15,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-08-30 03:33:15,653 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 03:33:15,653 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:33:15,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:15,653 INFO L85 PathProgramCache]: Analyzing trace with hash 691401937, now seen corresponding path program 1 times [2023-08-30 03:33:15,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:15,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530423982] [2023-08-30 03:33:15,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:33:15,654 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 03:33:15,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:15,655 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 03:33:15,656 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 03:33:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:33:15,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 03:33:15,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:33:15,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:15,895 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 03:33:15,945 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 03:33:15,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:33:15,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:33:15,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530423982] [2023-08-30 03:33:15,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530423982] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:33:15,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:33:15,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:33:15,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058063111] [2023-08-30 03:33:15,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:33:15,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:33:15,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:33:15,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:33:15,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:33:16,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 426 [2023-08-30 03:33:16,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 114 transitions, 758 flow. Second operand has 3 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 03:33:16,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:33:16,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 426 [2023-08-30 03:33:16,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:17,587 INFO L130 PetriNetUnfolder]: 1004/2030 cut-off events. [2023-08-30 03:33:17,587 INFO L131 PetriNetUnfolder]: For 4478/4627 co-relation queries the response was YES. [2023-08-30 03:33:17,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6789 conditions, 2030 events. 1004/2030 cut-off events. For 4478/4627 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 13815 event pairs, 604 based on Foata normal form. 16/1809 useless extension candidates. Maximal degree in co-relation 6770. Up to 1483 conditions per place. [2023-08-30 03:33:17,621 INFO L137 encePairwiseOnDemand]: 423/426 looper letters, 66 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2023-08-30 03:33:17,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 110 transitions, 858 flow [2023-08-30 03:33:17,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:33:17,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:33:17,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 609 transitions. [2023-08-30 03:33:17,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765258215962441 [2023-08-30 03:33:17,624 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 609 transitions. [2023-08-30 03:33:17,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 609 transitions. [2023-08-30 03:33:17,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:17,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 609 transitions. [2023-08-30 03:33:17,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:17,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:17,628 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:17,628 INFO L175 Difference]: Start difference. First operand has 107 places, 114 transitions, 758 flow. Second operand 3 states and 609 transitions. [2023-08-30 03:33:17,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 110 transitions, 858 flow [2023-08-30 03:33:17,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 110 transitions, 841 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 03:33:17,638 INFO L231 Difference]: Finished difference. Result has 105 places, 110 transitions, 709 flow [2023-08-30 03:33:17,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=709, PETRI_PLACES=105, PETRI_TRANSITIONS=110} [2023-08-30 03:33:17,639 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 11 predicate places. [2023-08-30 03:33:17,639 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 110 transitions, 709 flow [2023-08-30 03:33:17,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 03:33:17,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:17,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:33:17,653 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 03:33:17,853 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 03:33:17,853 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:33:17,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:17,854 INFO L85 PathProgramCache]: Analyzing trace with hash 691401938, now seen corresponding path program 1 times [2023-08-30 03:33:17,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:17,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390659362] [2023-08-30 03:33:17,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:33:17,854 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 03:33:17,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:17,856 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 03:33:17,860 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 03:33:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:33:18,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 03:33:18,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:33:18,105 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-30 03:33:18,105 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 03:33:18,135 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 03:33:18,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:33:18,136 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:33:18,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390659362] [2023-08-30 03:33:18,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390659362] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:33:18,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:33:18,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:33:18,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629095146] [2023-08-30 03:33:18,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:33:18,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:33:18,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:33:18,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:33:18,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:33:18,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 426 [2023-08-30 03:33:18,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 110 transitions, 709 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:18,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:33:18,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 426 [2023-08-30 03:33:18,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:19,731 INFO L130 PetriNetUnfolder]: 975/1952 cut-off events. [2023-08-30 03:33:19,731 INFO L131 PetriNetUnfolder]: For 4125/4262 co-relation queries the response was YES. [2023-08-30 03:33:19,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6498 conditions, 1952 events. 975/1952 cut-off events. For 4125/4262 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 12983 event pairs, 551 based on Foata normal form. 16/1756 useless extension candidates. Maximal degree in co-relation 6479. Up to 1060 conditions per place. [2023-08-30 03:33:19,742 INFO L137 encePairwiseOnDemand]: 416/426 looper letters, 52 selfloop transitions, 19 changer transitions 0/113 dead transitions. [2023-08-30 03:33:19,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 113 transitions, 841 flow [2023-08-30 03:33:19,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:33:19,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:33:19,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 615 transitions. [2023-08-30 03:33:19,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4812206572769953 [2023-08-30 03:33:19,746 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 615 transitions. [2023-08-30 03:33:19,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 615 transitions. [2023-08-30 03:33:19,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:19,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 615 transitions. [2023-08-30 03:33:19,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:19,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:19,750 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:19,750 INFO L175 Difference]: Start difference. First operand has 105 places, 110 transitions, 709 flow. Second operand 3 states and 615 transitions. [2023-08-30 03:33:19,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 113 transitions, 841 flow [2023-08-30 03:33:19,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 113 transitions, 839 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:33:19,760 INFO L231 Difference]: Finished difference. Result has 105 places, 106 transitions, 713 flow [2023-08-30 03:33:19,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=713, PETRI_PLACES=105, PETRI_TRANSITIONS=106} [2023-08-30 03:33:19,760 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 11 predicate places. [2023-08-30 03:33:19,760 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 106 transitions, 713 flow [2023-08-30 03:33:19,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:19,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:19,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:33:19,774 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 (15)] Ended with exit code 0 [2023-08-30 03:33:19,974 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 03:33:19,975 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:33:19,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:19,975 INFO L85 PathProgramCache]: Analyzing trace with hash -453255691, now seen corresponding path program 1 times [2023-08-30 03:33:19,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:19,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769371967] [2023-08-30 03:33:19,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:33:19,976 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 03:33:19,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:19,978 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 03:33:19,980 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 03:33:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:33:20,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 03:33:20,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:33:20,331 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 03:33:20,331 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 03:33:20,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:33:20,332 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:33:20,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769371967] [2023-08-30 03:33:20,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769371967] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:33:20,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:33:20,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:33:20,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851640874] [2023-08-30 03:33:20,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:33:20,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:33:20,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:33:20,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:33:20,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-08-30 03:33:21,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 426 [2023-08-30 03:33:21,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 106 transitions, 713 flow. Second operand has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 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 03:33:21,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:33:21,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 426 [2023-08-30 03:33:21,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:22,647 INFO L130 PetriNetUnfolder]: 1887/3247 cut-off events. [2023-08-30 03:33:22,647 INFO L131 PetriNetUnfolder]: For 8072/8072 co-relation queries the response was YES. [2023-08-30 03:33:22,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11736 conditions, 3247 events. 1887/3247 cut-off events. For 8072/8072 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 18664 event pairs, 783 based on Foata normal form. 0/2975 useless extension candidates. Maximal degree in co-relation 11717. Up to 1578 conditions per place. [2023-08-30 03:33:22,661 INFO L137 encePairwiseOnDemand]: 404/426 looper letters, 93 selfloop transitions, 32 changer transitions 2/135 dead transitions. [2023-08-30 03:33:22,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 135 transitions, 1121 flow [2023-08-30 03:33:22,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:33:22,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:33:22,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 590 transitions. [2023-08-30 03:33:22,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34624413145539906 [2023-08-30 03:33:22,664 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 590 transitions. [2023-08-30 03:33:22,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 590 transitions. [2023-08-30 03:33:22,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:22,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 590 transitions. [2023-08-30 03:33:22,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:22,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:22,675 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:22,675 INFO L175 Difference]: Start difference. First operand has 105 places, 106 transitions, 713 flow. Second operand 4 states and 590 transitions. [2023-08-30 03:33:22,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 135 transitions, 1121 flow [2023-08-30 03:33:22,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 135 transitions, 1083 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:33:22,688 INFO L231 Difference]: Finished difference. Result has 107 places, 121 transitions, 873 flow [2023-08-30 03:33:22,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=873, PETRI_PLACES=107, PETRI_TRANSITIONS=121} [2023-08-30 03:33:22,689 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 13 predicate places. [2023-08-30 03:33:22,689 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 121 transitions, 873 flow [2023-08-30 03:33:22,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 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 03:33:22,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:22,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:33:22,704 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 03:33:22,903 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 03:33:22,904 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:33:22,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:22,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1140063343, now seen corresponding path program 1 times [2023-08-30 03:33:22,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:22,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [805714113] [2023-08-30 03:33:22,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:33:22,905 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 03:33:22,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:22,906 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 03:33:22,907 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 03:33:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:33:23,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 03:33:23,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:33:23,124 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 03:33:23,130 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 03:33:23,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:23,225 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 03:33:23,237 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:33:23,237 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 03:33:23,249 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 03:33:23,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:33:23,250 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:33:23,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [805714113] [2023-08-30 03:33:23,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [805714113] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:33:23,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:33:23,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 03:33:23,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308709999] [2023-08-30 03:33:23,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:33:23,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 03:33:23,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:33:23,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 03:33:23,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 03:33:24,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 426 [2023-08-30 03:33:24,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 121 transitions, 873 flow. Second operand has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:24,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:33:24,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 426 [2023-08-30 03:33:24,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:26,838 INFO L130 PetriNetUnfolder]: 1837/3314 cut-off events. [2023-08-30 03:33:26,839 INFO L131 PetriNetUnfolder]: For 9417/9528 co-relation queries the response was YES. [2023-08-30 03:33:26,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12746 conditions, 3314 events. 1837/3314 cut-off events. For 9417/9528 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 21140 event pairs, 735 based on Foata normal form. 28/3172 useless extension candidates. Maximal degree in co-relation 12726. Up to 1627 conditions per place. [2023-08-30 03:33:26,853 INFO L137 encePairwiseOnDemand]: 410/426 looper letters, 103 selfloop transitions, 26 changer transitions 0/160 dead transitions. [2023-08-30 03:33:26,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 160 transitions, 1332 flow [2023-08-30 03:33:26,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 03:33:26,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 03:33:26,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1324 transitions. [2023-08-30 03:33:26,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44399731723675384 [2023-08-30 03:33:26,856 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1324 transitions. [2023-08-30 03:33:26,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1324 transitions. [2023-08-30 03:33:26,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:26,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1324 transitions. [2023-08-30 03:33:26,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 189.14285714285714) internal successors, (1324), 7 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:26,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 426.0) internal successors, (3408), 8 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:26,863 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 426.0) internal successors, (3408), 8 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:26,863 INFO L175 Difference]: Start difference. First operand has 107 places, 121 transitions, 873 flow. Second operand 7 states and 1324 transitions. [2023-08-30 03:33:26,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 160 transitions, 1332 flow [2023-08-30 03:33:26,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 160 transitions, 1250 flow, removed 17 selfloop flow, removed 4 redundant places. [2023-08-30 03:33:26,881 INFO L231 Difference]: Finished difference. Result has 106 places, 119 transitions, 865 flow [2023-08-30 03:33:26,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=865, PETRI_PLACES=106, PETRI_TRANSITIONS=119} [2023-08-30 03:33:26,883 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 12 predicate places. [2023-08-30 03:33:26,883 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 119 transitions, 865 flow [2023-08-30 03:33:26,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:26,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:26,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:33:26,900 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 03:33:27,097 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 03:33:27,097 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:33:27,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:27,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1282583506, now seen corresponding path program 1 times [2023-08-30 03:33:27,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:27,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890328141] [2023-08-30 03:33:27,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:33:27,098 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 03:33:27,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:27,099 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 03:33:27,102 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 03:33:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:33:27,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 03:33:27,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:33:27,326 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 03:33:27,330 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 03:33:27,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:27,423 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 03:33:27,440 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:33:27,440 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 03:33:27,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:33:27,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:33:27,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:33:27,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890328141] [2023-08-30 03:33:27,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890328141] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:33:27,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:33:27,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 03:33:27,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655208649] [2023-08-30 03:33:27,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:33:27,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 03:33:27,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:33:27,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 03:33:27,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 03:33:28,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 426 [2023-08-30 03:33:28,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 119 transitions, 865 flow. Second operand has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:28,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:33:28,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 426 [2023-08-30 03:33:28,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:31,149 INFO L130 PetriNetUnfolder]: 2129/3867 cut-off events. [2023-08-30 03:33:31,149 INFO L131 PetriNetUnfolder]: For 11689/11862 co-relation queries the response was YES. [2023-08-30 03:33:31,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15096 conditions, 3867 events. 2129/3867 cut-off events. For 11689/11862 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 26079 event pairs, 809 based on Foata normal form. 91/3766 useless extension candidates. Maximal degree in co-relation 15076. Up to 2096 conditions per place. [2023-08-30 03:33:31,165 INFO L137 encePairwiseOnDemand]: 410/426 looper letters, 115 selfloop transitions, 26 changer transitions 0/170 dead transitions. [2023-08-30 03:33:31,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 170 transitions, 1388 flow [2023-08-30 03:33:31,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 03:33:31,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 03:33:31,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1336 transitions. [2023-08-30 03:33:31,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44802146210596916 [2023-08-30 03:33:31,170 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1336 transitions. [2023-08-30 03:33:31,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1336 transitions. [2023-08-30 03:33:31,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:31,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1336 transitions. [2023-08-30 03:33:31,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 190.85714285714286) internal successors, (1336), 7 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:31,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 426.0) internal successors, (3408), 8 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:31,177 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 426.0) internal successors, (3408), 8 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:31,177 INFO L175 Difference]: Start difference. First operand has 106 places, 119 transitions, 865 flow. Second operand 7 states and 1336 transitions. [2023-08-30 03:33:31,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 170 transitions, 1388 flow [2023-08-30 03:33:31,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 170 transitions, 1349 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 03:33:31,200 INFO L231 Difference]: Finished difference. Result has 105 places, 117 transitions, 904 flow [2023-08-30 03:33:31,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=904, PETRI_PLACES=105, PETRI_TRANSITIONS=117} [2023-08-30 03:33:31,201 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 11 predicate places. [2023-08-30 03:33:31,201 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 117 transitions, 904 flow [2023-08-30 03:33:31,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:31,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:31,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:33:31,216 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 03:33:31,416 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 03:33:31,416 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:33:31,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:31,417 INFO L85 PathProgramCache]: Analyzing trace with hash 946934180, now seen corresponding path program 1 times [2023-08-30 03:33:31,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:31,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923291523] [2023-08-30 03:33:31,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:33:31,417 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 03:33:31,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:31,419 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 03:33:31,421 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 03:33:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:33:31,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 03:33:31,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:33:31,610 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 03:33:31,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:33:31,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:33:31,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923291523] [2023-08-30 03:33:31,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923291523] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:33:31,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:33:31,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:33:31,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067556842] [2023-08-30 03:33:31,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:33:31,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:33:31,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:33:31,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:33:31,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:33:31,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 426 [2023-08-30 03:33:31,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 117 transitions, 904 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:31,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:33:31,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 426 [2023-08-30 03:33:31,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:32,820 INFO L130 PetriNetUnfolder]: 126/345 cut-off events. [2023-08-30 03:33:32,820 INFO L131 PetriNetUnfolder]: For 402/430 co-relation queries the response was YES. [2023-08-30 03:33:32,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1068 conditions, 345 events. 126/345 cut-off events. For 402/430 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1570 event pairs, 55 based on Foata normal form. 18/307 useless extension candidates. Maximal degree in co-relation 1048. Up to 221 conditions per place. [2023-08-30 03:33:32,823 INFO L137 encePairwiseOnDemand]: 424/426 looper letters, 48 selfloop transitions, 1 changer transitions 1/64 dead transitions. [2023-08-30 03:33:32,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 64 transitions, 456 flow [2023-08-30 03:33:32,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:33:32,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:33:32,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 604 transitions. [2023-08-30 03:33:32,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726134585289515 [2023-08-30 03:33:32,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 604 transitions. [2023-08-30 03:33:32,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 604 transitions. [2023-08-30 03:33:32,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:32,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 604 transitions. [2023-08-30 03:33:32,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:32,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:32,839 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:32,839 INFO L175 Difference]: Start difference. First operand has 105 places, 117 transitions, 904 flow. Second operand 3 states and 604 transitions. [2023-08-30 03:33:32,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 64 transitions, 456 flow [2023-08-30 03:33:32,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 64 transitions, 297 flow, removed 20 selfloop flow, removed 21 redundant places. [2023-08-30 03:33:32,842 INFO L231 Difference]: Finished difference. Result has 73 places, 57 transitions, 175 flow [2023-08-30 03:33:32,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=73, PETRI_TRANSITIONS=57} [2023-08-30 03:33:32,843 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -21 predicate places. [2023-08-30 03:33:32,843 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 57 transitions, 175 flow [2023-08-30 03:33:32,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:32,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:32,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:33:32,855 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 03:33:33,048 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 03:33:33,049 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:33:33,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:33,049 INFO L85 PathProgramCache]: Analyzing trace with hash 462411017, now seen corresponding path program 1 times [2023-08-30 03:33:33,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:33,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858654410] [2023-08-30 03:33:33,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:33:33,050 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 03:33:33,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:33,051 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 03:33:33,053 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 03:33:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:33:33,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 03:33:33,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:33:33,263 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 03:33:33,284 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 03:33:33,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:33:33,284 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:33:33,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858654410] [2023-08-30 03:33:33,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [858654410] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:33:33,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:33:33,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:33:33,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338830820] [2023-08-30 03:33:33,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:33:33,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:33:33,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:33:33,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:33:33,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:33:33,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 426 [2023-08-30 03:33:33,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 57 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:33,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:33:33,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 426 [2023-08-30 03:33:33,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:34,659 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 03:33:35,741 INFO L130 PetriNetUnfolder]: 130/346 cut-off events. [2023-08-30 03:33:35,741 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2023-08-30 03:33:35,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 820 conditions, 346 events. 130/346 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1548 event pairs, 57 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 810. Up to 160 conditions per place. [2023-08-30 03:33:35,743 INFO L137 encePairwiseOnDemand]: 417/426 looper letters, 37 selfloop transitions, 10 changer transitions 0/59 dead transitions. [2023-08-30 03:33:35,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 59 transitions, 277 flow [2023-08-30 03:33:35,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:33:35,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:33:35,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 601 transitions. [2023-08-30 03:33:35,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702660406885759 [2023-08-30 03:33:35,744 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 601 transitions. [2023-08-30 03:33:35,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 601 transitions. [2023-08-30 03:33:35,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:35,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 601 transitions. [2023-08-30 03:33:35,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:35,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:35,747 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:35,747 INFO L175 Difference]: Start difference. First operand has 73 places, 57 transitions, 175 flow. Second operand 3 states and 601 transitions. [2023-08-30 03:33:35,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 59 transitions, 277 flow [2023-08-30 03:33:35,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 59 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:33:35,748 INFO L231 Difference]: Finished difference. Result has 71 places, 55 transitions, 190 flow [2023-08-30 03:33:35,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=71, PETRI_TRANSITIONS=55} [2023-08-30 03:33:35,748 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -23 predicate places. [2023-08-30 03:33:35,749 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 190 flow [2023-08-30 03:33:35,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:35,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:35,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:33:35,763 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 (20)] Ended with exit code 0 [2023-08-30 03:33:35,961 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 03:33:35,961 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:33:35,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:35,961 INFO L85 PathProgramCache]: Analyzing trace with hash 462411016, now seen corresponding path program 1 times [2023-08-30 03:33:35,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:35,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474730537] [2023-08-30 03:33:35,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:33:35,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:33:35,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:35,963 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 03:33:35,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-08-30 03:33:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:33:36,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 03:33:36,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:33:36,166 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 03:33:36,174 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 03:33:36,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:33:36,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:33:36,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474730537] [2023-08-30 03:33:36,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474730537] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:33:36,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:33:36,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:33:36,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976737368] [2023-08-30 03:33:36,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:33:36,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:33:36,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:33:36,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:33:36,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:33:36,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 426 [2023-08-30 03:33:36,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:36,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:33:36,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 426 [2023-08-30 03:33:36,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:38,090 INFO L130 PetriNetUnfolder]: 130/339 cut-off events. [2023-08-30 03:33:38,091 INFO L131 PetriNetUnfolder]: For 171/171 co-relation queries the response was YES. [2023-08-30 03:33:38,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 837 conditions, 339 events. 130/339 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1503 event pairs, 57 based on Foata normal form. 1/293 useless extension candidates. Maximal degree in co-relation 827. Up to 160 conditions per place. [2023-08-30 03:33:38,092 INFO L137 encePairwiseOnDemand]: 417/426 looper letters, 37 selfloop transitions, 10 changer transitions 0/57 dead transitions. [2023-08-30 03:33:38,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 57 transitions, 292 flow [2023-08-30 03:33:38,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:33:38,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:33:38,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 592 transitions. [2023-08-30 03:33:38,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46322378716744916 [2023-08-30 03:33:38,094 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 592 transitions. [2023-08-30 03:33:38,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 592 transitions. [2023-08-30 03:33:38,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:38,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 592 transitions. [2023-08-30 03:33:38,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:38,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:38,096 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:38,096 INFO L175 Difference]: Start difference. First operand has 71 places, 55 transitions, 190 flow. Second operand 3 states and 592 transitions. [2023-08-30 03:33:38,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 57 transitions, 292 flow [2023-08-30 03:33:38,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 57 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:33:38,098 INFO L231 Difference]: Finished difference. Result has 69 places, 53 transitions, 186 flow [2023-08-30 03:33:38,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=69, PETRI_TRANSITIONS=53} [2023-08-30 03:33:38,098 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -25 predicate places. [2023-08-30 03:33:38,099 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 53 transitions, 186 flow [2023-08-30 03:33:38,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:38,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:38,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:33:38,111 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 03:33:38,308 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 03:33:38,308 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:33:38,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:38,308 INFO L85 PathProgramCache]: Analyzing trace with hash 462411367, now seen corresponding path program 1 times [2023-08-30 03:33:38,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:38,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9992144] [2023-08-30 03:33:38,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:33:38,309 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 03:33:38,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:38,310 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 03:33:38,311 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 03:33:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:33:38,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 03:33:38,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:33:38,649 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 03:33:38,687 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-08-30 03:33:38,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-08-30 03:33:38,737 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 03:33:38,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:33:38,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:33:38,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9992144] [2023-08-30 03:33:38,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9992144] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:33:38,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:33:38,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:33:38,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566725552] [2023-08-30 03:33:38,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:33:38,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:33:38,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:33:38,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:33:38,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:33:39,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 426 [2023-08-30 03:33:39,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 53 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:39,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:33:39,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 426 [2023-08-30 03:33:39,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:40,956 INFO L130 PetriNetUnfolder]: 134/337 cut-off events. [2023-08-30 03:33:40,957 INFO L131 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2023-08-30 03:33:40,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 337 events. 134/337 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1457 event pairs, 57 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 839. Up to 170 conditions per place. [2023-08-30 03:33:40,958 INFO L137 encePairwiseOnDemand]: 416/426 looper letters, 37 selfloop transitions, 12 changer transitions 0/56 dead transitions. [2023-08-30 03:33:40,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 56 transitions, 294 flow [2023-08-30 03:33:40,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:33:40,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:33:40,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 711 transitions. [2023-08-30 03:33:40,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41725352112676056 [2023-08-30 03:33:40,960 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 711 transitions. [2023-08-30 03:33:40,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 711 transitions. [2023-08-30 03:33:40,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:40,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 711 transitions. [2023-08-30 03:33:40,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 177.75) internal successors, (711), 4 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:40,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:40,963 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:40,963 INFO L175 Difference]: Start difference. First operand has 69 places, 53 transitions, 186 flow. Second operand 4 states and 711 transitions. [2023-08-30 03:33:40,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 56 transitions, 294 flow [2023-08-30 03:33:40,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 56 transitions, 274 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:33:40,964 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 188 flow [2023-08-30 03:33:40,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2023-08-30 03:33:40,965 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -25 predicate places. [2023-08-30 03:33:40,965 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 188 flow [2023-08-30 03:33:40,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:40,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:40,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:33:40,977 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 03:33:41,166 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 03:33:41,166 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:33:41,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:41,166 INFO L85 PathProgramCache]: Analyzing trace with hash 462411368, now seen corresponding path program 1 times [2023-08-30 03:33:41,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:41,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395077979] [2023-08-30 03:33:41,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:33:41,167 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 03:33:41,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:41,168 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 03:33:41,169 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 03:33:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:33:41,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 03:33:41,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:33:41,471 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 03:33:41,477 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 03:33:41,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:41,587 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 03:33:41,596 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:33:41,597 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 03:33:41,620 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 03:33:41,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:33:41,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:33:41,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395077979] [2023-08-30 03:33:41,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395077979] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:33:41,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:33:41,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 03:33:41,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153932797] [2023-08-30 03:33:41,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:33:41,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 03:33:41,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:33:41,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 03:33:41,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 03:33:42,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 426 [2023-08-30 03:33:42,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 166.83333333333334) internal successors, (1001), 6 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:42,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:33:42,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 426 [2023-08-30 03:33:42,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:44,977 INFO L130 PetriNetUnfolder]: 110/283 cut-off events. [2023-08-30 03:33:44,977 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-30 03:33:44,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 706 conditions, 283 events. 110/283 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1189 event pairs, 57 based on Foata normal form. 14/272 useless extension candidates. Maximal degree in co-relation 696. Up to 116 conditions per place. [2023-08-30 03:33:44,979 INFO L137 encePairwiseOnDemand]: 411/426 looper letters, 28 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2023-08-30 03:33:44,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 46 transitions, 243 flow [2023-08-30 03:33:44,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:33:44,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:33:44,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1033 transitions. [2023-08-30 03:33:44,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041471048513302 [2023-08-30 03:33:44,981 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1033 transitions. [2023-08-30 03:33:44,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1033 transitions. [2023-08-30 03:33:44,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:44,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1033 transitions. [2023-08-30 03:33:44,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 172.16666666666666) internal successors, (1033), 6 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:44,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 426.0) internal successors, (2982), 7 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:44,985 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 426.0) internal successors, (2982), 7 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:44,985 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 188 flow. Second operand 6 states and 1033 transitions. [2023-08-30 03:33:44,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 46 transitions, 243 flow [2023-08-30 03:33:44,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 46 transitions, 223 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 03:33:44,986 INFO L231 Difference]: Finished difference. Result has 61 places, 42 transitions, 155 flow [2023-08-30 03:33:44,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=155, PETRI_PLACES=61, PETRI_TRANSITIONS=42} [2023-08-30 03:33:44,986 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -33 predicate places. [2023-08-30 03:33:44,987 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 42 transitions, 155 flow [2023-08-30 03:33:44,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.83333333333334) internal successors, (1001), 6 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:44,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:44,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:33:44,999 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 03:33:45,188 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 03:33:45,189 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:33:45,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:45,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1735161761, now seen corresponding path program 1 times [2023-08-30 03:33:45,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:45,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867061056] [2023-08-30 03:33:45,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:33:45,190 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 03:33:45,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:45,191 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 03:33:45,192 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 03:33:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:33:45,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 03:33:45,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:33:45,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:45,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:45,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:45,579 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:33:45,580 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:33:45,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2023-08-30 03:33:45,629 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 03:33:45,629 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 69 treesize of output 89 [2023-08-30 03:33:45,643 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 03:33:45,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:33:45,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:33:45,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867061056] [2023-08-30 03:33:45,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867061056] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:33:45,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:33:45,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:33:45,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861691121] [2023-08-30 03:33:45,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:33:45,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:33:45,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:33:45,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:33:45,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:33:46,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 426 [2023-08-30 03:33:46,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 42 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:46,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:33:46,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 426 [2023-08-30 03:33:46,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:47,050 INFO L130 PetriNetUnfolder]: 200/423 cut-off events. [2023-08-30 03:33:47,050 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-08-30 03:33:47,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 423 events. 200/423 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1584 event pairs, 153 based on Foata normal form. 0/405 useless extension candidates. Maximal degree in co-relation 1145. Up to 348 conditions per place. [2023-08-30 03:33:47,051 INFO L137 encePairwiseOnDemand]: 417/426 looper letters, 43 selfloop transitions, 8 changer transitions 0/55 dead transitions. [2023-08-30 03:33:47,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 302 flow [2023-08-30 03:33:47,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:33:47,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:33:47,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2023-08-30 03:33:47,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44992175273865415 [2023-08-30 03:33:47,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2023-08-30 03:33:47,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2023-08-30 03:33:47,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:47,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2023-08-30 03:33:47,054 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 03:33:47,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:47,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:47,056 INFO L175 Difference]: Start difference. First operand has 61 places, 42 transitions, 155 flow. Second operand 3 states and 575 transitions. [2023-08-30 03:33:47,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 302 flow [2023-08-30 03:33:47,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 287 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 03:33:47,058 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 216 flow [2023-08-30 03:33:47,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2023-08-30 03:33:47,058 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -33 predicate places. [2023-08-30 03:33:47,058 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 216 flow [2023-08-30 03:33:47,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:47,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:47,059 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 03:33:47,074 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 03:33:47,274 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 03:33:47,274 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:33:47,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:47,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1949271184, now seen corresponding path program 1 times [2023-08-30 03:33:47,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:47,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358975223] [2023-08-30 03:33:47,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:33:47,275 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 03:33:47,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:47,276 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 03:33:47,277 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 03:33:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:33:47,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 03:33:47,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:33:47,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:47,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:47,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:47,617 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:33:47,617 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:33:47,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2023-08-30 03:33:47,657 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 03:33:47,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:33:47,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:33:47,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358975223] [2023-08-30 03:33:47,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358975223] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:33:47,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:33:47,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:33:47,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183690263] [2023-08-30 03:33:47,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:33:47,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:33:47,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:33:47,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:33:47,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:33:48,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 426 [2023-08-30 03:33:48,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:48,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:33:48,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 426 [2023-08-30 03:33:48,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:49,486 INFO L130 PetriNetUnfolder]: 215/461 cut-off events. [2023-08-30 03:33:49,487 INFO L131 PetriNetUnfolder]: For 341/341 co-relation queries the response was YES. [2023-08-30 03:33:49,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1336 conditions, 461 events. 215/461 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1753 event pairs, 159 based on Foata normal form. 0/444 useless extension candidates. Maximal degree in co-relation 1325. Up to 368 conditions per place. [2023-08-30 03:33:49,488 INFO L137 encePairwiseOnDemand]: 417/426 looper letters, 46 selfloop transitions, 13 changer transitions 0/63 dead transitions. [2023-08-30 03:33:49,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 406 flow [2023-08-30 03:33:49,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:33:49,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:33:49,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2023-08-30 03:33:49,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44992175273865415 [2023-08-30 03:33:49,490 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2023-08-30 03:33:49,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2023-08-30 03:33:49,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:49,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2023-08-30 03:33:49,491 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 03:33:49,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:49,492 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:49,492 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 216 flow. Second operand 3 states and 575 transitions. [2023-08-30 03:33:49,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 406 flow [2023-08-30 03:33:49,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 376 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 03:33:49,494 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 307 flow [2023-08-30 03:33:49,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=307, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-08-30 03:33:49,494 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -31 predicate places. [2023-08-30 03:33:49,494 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 307 flow [2023-08-30 03:33:49,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:49,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:49,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:33:49,508 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 03:33:49,696 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 03:33:49,697 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:33:49,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:49,697 INFO L85 PathProgramCache]: Analyzing trace with hash 981744779, now seen corresponding path program 1 times [2023-08-30 03:33:49,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:49,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811899426] [2023-08-30 03:33:49,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:33:49,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:33:49,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:49,699 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 03:33:49,701 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 03:33:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:33:50,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 03:33:50,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:33:50,063 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 11 treesize of output 9 [2023-08-30 03:33:50,106 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 03:33:50,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:33:50,106 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:33:50,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811899426] [2023-08-30 03:33:50,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811899426] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:33:50,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:33:50,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 03:33:50,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979828374] [2023-08-30 03:33:50,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:33:50,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 03:33:50,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:33:50,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 03:33:50,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 03:33:50,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 426 [2023-08-30 03:33:50,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 307 flow. Second operand has 6 states, 6 states have (on average 188.16666666666666) internal successors, (1129), 6 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:50,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:33:50,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 426 [2023-08-30 03:33:50,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:52,082 INFO L130 PetriNetUnfolder]: 142/369 cut-off events. [2023-08-30 03:33:52,083 INFO L131 PetriNetUnfolder]: For 261/261 co-relation queries the response was YES. [2023-08-30 03:33:52,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1059 conditions, 369 events. 142/369 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1708 event pairs, 55 based on Foata normal form. 6/345 useless extension candidates. Maximal degree in co-relation 1047. Up to 188 conditions per place. [2023-08-30 03:33:52,084 INFO L137 encePairwiseOnDemand]: 419/426 looper letters, 49 selfloop transitions, 8 changer transitions 0/72 dead transitions. [2023-08-30 03:33:52,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 475 flow [2023-08-30 03:33:52,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:33:52,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:33:52,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1157 transitions. [2023-08-30 03:33:52,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452660406885759 [2023-08-30 03:33:52,087 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1157 transitions. [2023-08-30 03:33:52,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1157 transitions. [2023-08-30 03:33:52,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:52,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1157 transitions. [2023-08-30 03:33:52,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 192.83333333333334) internal successors, (1157), 6 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 03:33:52,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 426.0) internal successors, (2982), 7 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:52,091 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 426.0) internal successors, (2982), 7 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:52,091 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 307 flow. Second operand 6 states and 1157 transitions. [2023-08-30 03:33:52,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 475 flow [2023-08-30 03:33:52,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 72 transitions, 447 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 03:33:52,095 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 329 flow [2023-08-30 03:33:52,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=329, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2023-08-30 03:33:52,095 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -26 predicate places. [2023-08-30 03:33:52,095 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 329 flow [2023-08-30 03:33:52,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.16666666666666) internal successors, (1129), 6 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:52,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:52,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:33:52,116 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 03:33:52,312 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 03:33:52,313 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:33:52,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:52,313 INFO L85 PathProgramCache]: Analyzing trace with hash 265003467, now seen corresponding path program 2 times [2023-08-30 03:33:52,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:52,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119533123] [2023-08-30 03:33:52,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 03:33:52,314 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 03:33:52,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:52,315 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 03:33:52,315 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 03:33:52,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 03:33:52,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:33:52,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 03:33:52,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:33:52,732 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 11 treesize of output 9 [2023-08-30 03:33:52,752 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 03:33:52,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:33:52,753 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:33:52,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119533123] [2023-08-30 03:33:52,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119533123] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:33:52,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:33:52,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 03:33:52,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181821625] [2023-08-30 03:33:52,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:33:52,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 03:33:52,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:33:52,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 03:33:52,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 03:33:52,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 426 [2023-08-30 03:33:52,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 329 flow. Second operand has 6 states, 6 states have (on average 188.16666666666666) internal successors, (1129), 6 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:52,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:33:52,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 426 [2023-08-30 03:33:52,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:54,635 INFO L130 PetriNetUnfolder]: 86/265 cut-off events. [2023-08-30 03:33:54,635 INFO L131 PetriNetUnfolder]: For 297/300 co-relation queries the response was YES. [2023-08-30 03:33:54,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 265 events. 86/265 cut-off events. For 297/300 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1098 event pairs, 17 based on Foata normal form. 15/251 useless extension candidates. Maximal degree in co-relation 804. Up to 103 conditions per place. [2023-08-30 03:33:54,636 INFO L137 encePairwiseOnDemand]: 419/426 looper letters, 47 selfloop transitions, 13 changer transitions 0/75 dead transitions. [2023-08-30 03:33:54,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 75 transitions, 501 flow [2023-08-30 03:33:54,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 03:33:54,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 03:33:54,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1344 transitions. [2023-08-30 03:33:54,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4507042253521127 [2023-08-30 03:33:54,639 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1344 transitions. [2023-08-30 03:33:54,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1344 transitions. [2023-08-30 03:33:54,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:54,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1344 transitions. [2023-08-30 03:33:54,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 192.0) internal successors, (1344), 7 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:54,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 426.0) internal successors, (3408), 8 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:54,643 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 426.0) internal successors, (3408), 8 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:54,643 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 329 flow. Second operand 7 states and 1344 transitions. [2023-08-30 03:33:54,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 75 transitions, 501 flow [2023-08-30 03:33:54,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 75 transitions, 471 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-08-30 03:33:54,646 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 327 flow [2023-08-30 03:33:54,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=327, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2023-08-30 03:33:54,646 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -25 predicate places. [2023-08-30 03:33:54,647 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 327 flow [2023-08-30 03:33:54,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.16666666666666) internal successors, (1129), 6 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:54,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:54,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:33:54,660 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 03:33:54,848 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 03:33:54,849 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-30 03:33:54,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:54,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1798825505, now seen corresponding path program 3 times [2023-08-30 03:33:54,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:54,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524708469] [2023-08-30 03:33:54,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 03:33:54,850 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 03:33:54,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:54,851 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 03:33:54,853 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 03:33:55,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 03:33:55,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-08-30 03:33:55,287 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 03:33:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 03:33:55,585 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-08-30 03:33:55,585 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 03:33:55,586 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK (62 of 63 remaining) [2023-08-30 03:33:55,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (61 of 63 remaining) [2023-08-30 03:33:55,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 63 remaining) [2023-08-30 03:33:55,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 63 remaining) [2023-08-30 03:33:55,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 63 remaining) [2023-08-30 03:33:55,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 63 remaining) [2023-08-30 03:33:55,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 63 remaining) [2023-08-30 03:33:55,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 63 remaining) [2023-08-30 03:33:55,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 63 remaining) [2023-08-30 03:33:55,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 63 remaining) [2023-08-30 03:33:55,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 63 remaining) [2023-08-30 03:33:55,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 63 remaining) [2023-08-30 03:33:55,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 63 remaining) [2023-08-30 03:33:55,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 63 remaining) [2023-08-30 03:33:55,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 63 remaining) [2023-08-30 03:33:55,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 63 remaining) [2023-08-30 03:33:55,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 63 remaining) [2023-08-30 03:33:55,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 63 remaining) [2023-08-30 03:33:55,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 63 remaining) [2023-08-30 03:33:55,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 63 remaining) [2023-08-30 03:33:55,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 63 remaining) [2023-08-30 03:33:55,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 63 remaining) [2023-08-30 03:33:55,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (40 of 63 remaining) [2023-08-30 03:33:55,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 63 remaining) [2023-08-30 03:33:55,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 63 remaining) [2023-08-30 03:33:55,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 63 remaining) [2023-08-30 03:33:55,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 63 remaining) [2023-08-30 03:33:55,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 63 remaining) [2023-08-30 03:33:55,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 63 remaining) [2023-08-30 03:33:55,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 63 remaining) [2023-08-30 03:33:55,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 63 remaining) [2023-08-30 03:33:55,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK (31 of 63 remaining) [2023-08-30 03:33:55,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 63 remaining) [2023-08-30 03:33:55,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 63 remaining) [2023-08-30 03:33:55,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 63 remaining) [2023-08-30 03:33:55,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 63 remaining) [2023-08-30 03:33:55,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_LEAK (26 of 63 remaining) [2023-08-30 03:33:55,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 63 remaining) [2023-08-30 03:33:55,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 63 remaining) [2023-08-30 03:33:55,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK (23 of 63 remaining) [2023-08-30 03:33:55,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 63 remaining) [2023-08-30 03:33:55,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 63 remaining) [2023-08-30 03:33:55,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK (20 of 63 remaining) [2023-08-30 03:33:55,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 63 remaining) [2023-08-30 03:33:55,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 63 remaining) [2023-08-30 03:33:55,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 63 remaining) [2023-08-30 03:33:55,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 63 remaining) [2023-08-30 03:33:55,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 63 remaining) [2023-08-30 03:33:55,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 63 remaining) [2023-08-30 03:33:55,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 63 remaining) [2023-08-30 03:33:55,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 63 remaining) [2023-08-30 03:33:55,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 63 remaining) [2023-08-30 03:33:55,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 63 remaining) [2023-08-30 03:33:55,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 63 remaining) [2023-08-30 03:33:55,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 63 remaining) [2023-08-30 03:33:55,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 63 remaining) [2023-08-30 03:33:55,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 63 remaining) [2023-08-30 03:33:55,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 63 remaining) [2023-08-30 03:33:55,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 63 remaining) [2023-08-30 03:33:55,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 63 remaining) [2023-08-30 03:33:55,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 63 remaining) [2023-08-30 03:33:55,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 63 remaining) [2023-08-30 03:33:55,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 63 remaining) [2023-08-30 03:33:55,621 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 03:33:55,803 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 03:33:55,803 INFO L445 BasicCegarLoop]: Path program histogram: [3, 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 03:33:55,809 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 03:33:55,809 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 03:33:55,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:33:55 BasicIcfg [2023-08-30 03:33:55,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 03:33:55,870 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 03:33:55,871 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 03:33:55,871 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 03:33:55,872 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:23:01" (3/4) ... [2023-08-30 03:33:55,874 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-30 03:33:55,874 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 03:33:55,875 INFO L158 Benchmark]: Toolchain (without parser) took 656263.60ms. Allocated memory was 77.6MB in the beginning and 446.7MB in the end (delta: 369.1MB). Free memory was 49.8MB in the beginning and 226.3MB in the end (delta: -176.5MB). Peak memory consumption was 192.8MB. Max. memory is 16.1GB. [2023-08-30 03:33:55,875 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 58.7MB. Free memory was 36.7MB in the beginning and 36.6MB in the end (delta: 58.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 03:33:55,875 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1055.18ms. Allocated memory is still 77.6MB. Free memory was 49.6MB in the beginning and 49.0MB in the end (delta: 631.5kB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2023-08-30 03:33:55,875 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.77ms. Allocated memory is still 77.6MB. Free memory was 49.0MB in the beginning and 45.2MB in the end (delta: 3.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 03:33:55,876 INFO L158 Benchmark]: Boogie Preprocessor took 71.24ms. Allocated memory is still 77.6MB. Free memory was 45.2MB in the beginning and 41.8MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 03:33:55,876 INFO L158 Benchmark]: RCFGBuilder took 1003.19ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 41.8MB in the beginning and 62.4MB in the end (delta: -20.6MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. [2023-08-30 03:33:55,876 INFO L158 Benchmark]: TraceAbstraction took 654052.29ms. Allocated memory was 94.4MB in the beginning and 446.7MB in the end (delta: 352.3MB). Free memory was 61.8MB in the beginning and 227.3MB in the end (delta: -165.5MB). Peak memory consumption was 188.1MB. Max. memory is 16.1GB. [2023-08-30 03:33:55,877 INFO L158 Benchmark]: Witness Printer took 3.74ms. Allocated memory is still 446.7MB. Free memory is still 226.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 03:33:55,878 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 58.7MB. Free memory was 36.7MB in the beginning and 36.6MB in the end (delta: 58.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1055.18ms. Allocated memory is still 77.6MB. Free memory was 49.6MB in the beginning and 49.0MB in the end (delta: 631.5kB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.77ms. Allocated memory is still 77.6MB. Free memory was 49.0MB in the beginning and 45.2MB in the end (delta: 3.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.24ms. Allocated memory is still 77.6MB. Free memory was 45.2MB in the beginning and 41.8MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1003.19ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 41.8MB in the beginning and 62.4MB in the end (delta: -20.6MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. * TraceAbstraction took 654052.29ms. Allocated memory was 94.4MB in the beginning and 446.7MB in the end (delta: 352.3MB). Free memory was 61.8MB in the beginning and 227.3MB in the end (delta: -165.5MB). Peak memory consumption was 188.1MB. Max. memory is 16.1GB. * Witness Printer took 3.74ms. Allocated memory is still 446.7MB. Free memory is still 226.3MB. 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: 580.2s, 207 PlacesBefore, 94 PlacesAfterwards, 207 TransitionsBefore, 91 TransitionsAfterwards, 6080 CoEnabledTransitionPairs, 6 FixpointIterations, 109 TrivialSequentialCompositions, 90 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 217 TotalNumberOfCompositions, 24687 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8740, independent: 8145, independent conditional: 0, independent unconditional: 8145, dependent: 595, dependent conditional: 0, dependent unconditional: 595, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3370, independent: 3265, independent conditional: 0, independent unconditional: 3265, dependent: 105, dependent conditional: 0, dependent unconditional: 105, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8740, independent: 4880, independent conditional: 0, independent unconditional: 4880, dependent: 490, dependent conditional: 0, dependent unconditional: 490, unknown: 3370, unknown conditional: 0, unknown unconditional: 3370] , Statistics on independence cache: Total cache size (in pairs): 495, Positive cache size: 444, Positive conditional cache size: 0, Positive unconditional cache size: 444, Negative cache size: 51, Negative conditional cache size: 0, Negative unconditional cache size: 51, 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; [L1745] CALL, EXPR 0 my_drv_init() [L1739] 0 return 0; [L1745] RET, EXPR 0 my_drv_init() [L1745] 0 int ret = my_drv_init(); [L1746] COND TRUE 0 ret==0 [L1747] 0 int probe_ret; [L1748] 0 struct my_data data; [L1749] CALL, EXPR 0 my_drv_probe(&data) [L1706] 0 struct device *d = &data->dev; [L1708] 0 data->shared.a = 0 [L1709] 0 data->shared.b = 0 [L1710] 0 int res = __VERIFIER_nondet_int(); [L1711] COND FALSE 0 !(\read(res)) [L1713] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [arg={-2147483648:24}, d={-2147483648:24}, data={-2147483648:0}, data={-2147483648:0}, pthread_create(&t1, ((void *)0), my_callback, (void *)d)=0, 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) );}) [L1694] 1 data->shared.a = 1 VAL [__mptr={-2147483648:24}, arg={-2147483648:24}, arg={-2147483648:24}, data={-2147483648:0}, dev={-2147483648:24}, t1={3:0}, t2={4:0}] [L1697] EXPR 1 data->shared.b [L1697] 1 int lb = data->shared.b; [L1700] 1 data->shared.b = lb + 1 VAL [__mptr={-2147483648:24}, arg={-2147483648:24}, arg={-2147483648:24}, data={-2147483648:0}, dev={-2147483648:24}, lb=0, t1={3:0}, t2={4:0}] [L1703] 1 return 0; [L1714] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [\result={0:0}, __mptr={-2147483648:24}, arg={-2147483648:24}, arg={-2147483648:24}, d={-2147483648:24}, data={-2147483648:0}, data={-2147483648:0}, data={-2147483648:0}, dev={-2147483648:24}, lb=0, pthread_create(&t2, ((void *)0), my_callback, (void *)d)=1, res=0, t1={3:0}, t2={4:0}] [L1715] 0 return 0; [L1749] RET, EXPR 0 my_drv_probe(&data) [L1749] 0 probe_ret = my_drv_probe(&data) VAL [\result={0:0}, __mptr={-2147483648:24}, arg={-2147483648:24}, arg={-2147483648:24}, data={-2147483648:0}, data={-2147483648:0}, dev={-2147483648:24}, lb=0, my_drv_probe(&data)=0, probe_ret=0, ret=0, t1={3:0}, t2={4:0}] [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) );}) [L1750] COND TRUE 0 probe_ret==0 [L1751] CALL 0 my_drv_disconnect(&data) [L1721] 0 void *status; VAL [\result={0:0}, __mptr={-2147483648:24}, arg={-2147483648:24}, arg={-2147483648:24}, data={-2147483648:0}, data={-2147483648:0}, data={-2147483648:0}, dev={-2147483648:24}, lb=0, status={5:0}, t1={3:0}, t2={4:0}] [L1722] 0 \read(t1) VAL [\read(t1)=0, \result={0:0}, __mptr={-2147483648:24}, arg={-2147483648:24}, arg={-2147483648:24}, data={-2147483648:0}, data={-2147483648:0}, data={-2147483648:0}, dev={-2147483648:24}, lb=0, status={5:0}, t1={3:0}, t2={4:0}] [L1722] FCALL, JOIN 1 pthread_join(t1, &status) VAL [\read(t1)=0, \result={0:0}, __mptr={-2147483648:24}, arg={-2147483648:24}, arg={-2147483648:24}, data={-2147483648:0}, data={-2147483648:0}, data={-2147483648:0}, dev={-2147483648:24}, lb=0, pthread_join(t1, &status)={0:0}, status={5:0}, t1={3:0}, t2={4:0}] [L1724] 0 data->shared.a = 3 VAL [\result={0:0}, __mptr={-2147483648:24}, arg={-2147483648:24}, arg={-2147483648:24}, data={-2147483648:0}, data={-2147483648:0}, data={-2147483648:0}, dev={-2147483648:24}, lb=0, status={5:0}, t1={3:0}, t2={4:0}] [L1694] 2 data->shared.a = 1 VAL [\result={0:0}, __mptr={-2147483648:24}, arg={-2147483648:24}, arg={-2147483648:24}, data={-2147483648:0}, dev={-2147483648:24}, lb=0, t1={3:0}, t2={4:0}] [L1727] 0 data->shared.b = 3 VAL [\result={0:0}, __mptr={-2147483648:24}, arg={-2147483648:24}, arg={-2147483648:24}, data={-2147483648:0}, data={-2147483648:0}, data={-2147483648:0}, dev={-2147483648:24}, lb=0, status={5:0}, t1={3:0}, t2={4:0}] [L1730] EXPR 0 data->shared.a [L1730] CALL 0 ldv_assert(data->shared.a==3) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, __mptr={-2147483648:24}, arg={-2147483648:24}, arg={-2147483648:24}, data={-2147483648:0}, dev={-2147483648:24}, expression=0, lb=0, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 1744]: 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: -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: 1675]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 225 locations, 63 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: 653.8s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 59.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 580.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5596 SdHoareTripleChecker+Valid, 54.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3315 mSDsluCounter, 445 SdHoareTripleChecker+Invalid, 51.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 175 IncrementalHoareTripleChecker+Unchecked, 181 mSDsCounter, 256 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7972 IncrementalHoareTripleChecker+Invalid, 8403 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 256 mSolverCounterUnsat, 264 mSDtfsCounter, 7972 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 216 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=904occurred in iteration=17, InterpolantAutomatonStates: 107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 241 NumberOfCodeBlocks, 241 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 196 ConstructedInterpolants, 7 QuantifiedInterpolants, 1518 SizeOfPredicates, 156 NumberOfNonLiveVariables, 4644 ConjunctsInSsa, 294 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 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 03:33:55,924 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