./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:54:30,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:54:30,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:54:30,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:54:30,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:54:30,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:54:30,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:54:30,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:54:30,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:54:30,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:54:30,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:54:30,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:54:30,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:54:30,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:54:30,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:54:30,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:54:30,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:54:30,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:54:30,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:54:30,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:54:30,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:54:30,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:54:30,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:54:30,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:54:30,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:54:30,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:54:30,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:54:30,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:54:30,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:54:30,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:54:30,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:54:30,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:54:30,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:54:30,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:54:30,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:54:30,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:54:30,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:54:30,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:54:30,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:54:30,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:54:30,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:54:30,682 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 20:54:30,719 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:54:30,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:54:30,720 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:54:30,721 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:54:30,721 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:54:30,722 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:54:30,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:54:30,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:54:30,723 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:54:30,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:54:30,724 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:54:30,724 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:54:30,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:54:30,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:54:30,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:54:30,725 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:54:30,725 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:54:30,725 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:54:30,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:54:30,725 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:54:30,726 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:54:30,726 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:54:30,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:54:30,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:54:30,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:54:30,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:54:30,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:54:30,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:54:30,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 20:54:30,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 20:54:30,727 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:54:30,728 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:54:30,728 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:54:30,728 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:54:30,728 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:54:31,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:54:31,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:54:31,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:54:31,045 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:54:31,045 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:54:31,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-08-29 20:54:32,285 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:54:32,605 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:54:32,605 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-08-29 20:54:32,626 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8358797e1/5a8b5e56163244e4b8862c149486470d/FLAG7b19ecd3b [2023-08-29 20:54:32,639 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8358797e1/5a8b5e56163244e4b8862c149486470d [2023-08-29 20:54:32,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:54:32,641 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:54:32,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:54:32,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:54:32,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:54:32,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:54:32" (1/1) ... [2023-08-29 20:54:32,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@273e131b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:54:32, skipping insertion in model container [2023-08-29 20:54:32,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:54:32" (1/1) ... [2023-08-29 20:54:32,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:54:32,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:54:33,376 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i[76084,76097] [2023-08-29 20:54:33,427 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:54:33,449 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-08-29 20:54:33,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@117bb7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:54:33, skipping insertion in model container [2023-08-29 20:54:33,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:54:33,450 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-29 20:54:33,451 INFO L158 Benchmark]: Toolchain (without parser) took 808.95ms. Allocated memory is still 88.1MB. Free memory was 62.8MB in the beginning and 65.4MB in the end (delta: -2.6MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2023-08-29 20:54:33,451 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 65.0MB. Free memory was 42.9MB in the beginning and 42.9MB in the end (delta: 49.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:54:33,452 INFO L158 Benchmark]: CACSL2BoogieTranslator took 807.25ms. Allocated memory is still 88.1MB. Free memory was 62.6MB in the beginning and 65.4MB in the end (delta: -2.8MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2023-08-29 20:54:33,453 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 65.0MB. Free memory was 42.9MB in the beginning and 42.9MB in the end (delta: 49.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 807.25ms. Allocated memory is still 88.1MB. Free memory was 62.6MB in the beginning and 65.4MB in the end (delta: -2.8MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1709]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:54:35,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:54:35,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:54:35,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:54:35,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:54:35,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:54:35,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:54:35,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:54:35,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:54:35,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:54:35,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:54:35,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:54:35,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:54:35,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:54:35,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:54:35,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:54:35,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:54:35,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:54:35,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:54:35,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:54:35,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:54:35,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:54:35,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:54:35,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:54:35,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:54:35,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:54:35,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:54:35,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:54:35,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:54:35,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:54:35,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:54:35,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:54:35,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:54:35,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:54:35,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:54:35,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:54:35,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:54:35,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:54:35,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:54:35,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:54:35,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:54:35,264 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-29 20:54:35,296 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:54:35,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:54:35,297 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:54:35,297 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:54:35,298 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:54:35,298 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:54:35,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:54:35,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:54:35,299 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:54:35,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:54:35,300 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:54:35,301 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:54:35,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:54:35,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:54:35,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:54:35,301 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:54:35,302 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:54:35,302 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:54:35,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:54:35,303 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:54:35,303 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-29 20:54:35,307 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-29 20:54:35,307 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:54:35,307 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:54:35,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:54:35,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:54:35,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:54:35,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:54:35,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:54:35,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:54:35,309 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-29 20:54:35,309 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-29 20:54:35,309 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:54:35,309 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:54:35,310 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:54:35,310 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-29 20:54:35,310 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:54:35,310 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:54:35,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:54:35,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:54:35,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:54:35,632 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:54:35,632 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:54:35,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-08-29 20:54:36,703 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:54:37,049 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:54:37,050 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-08-29 20:54:37,071 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56ba8365f/0f13e0d7114348159d04a53d379cf3c4/FLAG5121b9920 [2023-08-29 20:54:37,091 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56ba8365f/0f13e0d7114348159d04a53d379cf3c4 [2023-08-29 20:54:37,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:54:37,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:54:37,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:54:37,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:54:37,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:54:37,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:54:37" (1/1) ... [2023-08-29 20:54:37,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f82f43f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:54:37, skipping insertion in model container [2023-08-29 20:54:37,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:54:37" (1/1) ... [2023-08-29 20:54:37,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:54:37,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:54:37,872 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i[76084,76097] [2023-08-29 20:54:37,909 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:54:37,928 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-29 20:54:37,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:54:37,978 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i[76084,76097] [2023-08-29 20:54:37,996 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:54:38,000 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:54:38,030 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i[76084,76097] [2023-08-29 20:54:38,039 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:54:38,159 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:54:38,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:54:38 WrapperNode [2023-08-29 20:54:38,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:54:38,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:54:38,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:54:38,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:54:38,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:54:38" (1/1) ... [2023-08-29 20:54:38,206 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:54:38" (1/1) ... [2023-08-29 20:54:38,230 INFO L138 Inliner]: procedures = 486, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 133 [2023-08-29 20:54:38,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:54:38,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:54:38,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:54:38,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:54:38,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:54:38" (1/1) ... [2023-08-29 20:54:38,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:54:38" (1/1) ... [2023-08-29 20:54:38,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:54:38" (1/1) ... [2023-08-29 20:54:38,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:54:38" (1/1) ... [2023-08-29 20:54:38,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:54:38" (1/1) ... [2023-08-29 20:54:38,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:54:38" (1/1) ... [2023-08-29 20:54:38,262 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:54:38" (1/1) ... [2023-08-29 20:54:38,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:54:38" (1/1) ... [2023-08-29 20:54:38,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:54:38,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:54:38,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:54:38,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:54:38,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:54:38" (1/1) ... [2023-08-29 20:54:38,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:54:38,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:54:38,307 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 20:54:38,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 20:54:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:54:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-29 20:54:38,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-29 20:54:38,344 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 20:54:38,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:54:38,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 20:54:38,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:54:38,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:54:38,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-29 20:54:38,345 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-29 20:54:38,345 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-29 20:54:38,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:54:38,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-29 20:54:38,346 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 20:54:38,729 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:54:38,732 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:54:39,218 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:54:39,224 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:54:39,224 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:54:39,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:54:39 BoogieIcfgContainer [2023-08-29 20:54:39,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:54:39,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:54:39,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:54:39,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:54:39,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:54:37" (1/3) ... [2023-08-29 20:54:39,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f8c603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:54:39, skipping insertion in model container [2023-08-29 20:54:39,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:54:38" (2/3) ... [2023-08-29 20:54:39,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f8c603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:54:39, skipping insertion in model container [2023-08-29 20:54:39,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:54:39" (3/3) ... [2023-08-29 20:54:39,233 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2023-08-29 20:54:39,246 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:54:39,247 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2023-08-29 20:54:39,247 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:54:39,324 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 20:54:39,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 220 transitions, 456 flow [2023-08-29 20:54:39,431 INFO L130 PetriNetUnfolder]: 10/270 cut-off events. [2023-08-29 20:54:39,431 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 20:54:39,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 270 events. 10/270 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 676 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 155. Up to 4 conditions per place. [2023-08-29 20:54:39,437 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 220 transitions, 456 flow [2023-08-29 20:54:39,442 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 216 places, 218 transitions, 448 flow [2023-08-29 20:54:39,445 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:54:39,452 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 216 places, 218 transitions, 448 flow [2023-08-29 20:54:39,455 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 216 places, 218 transitions, 448 flow [2023-08-29 20:54:39,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 218 transitions, 448 flow [2023-08-29 20:54:39,508 INFO L130 PetriNetUnfolder]: 10/270 cut-off events. [2023-08-29 20:54:39,509 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 20:54:39,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 270 events. 10/270 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 677 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 155. Up to 4 conditions per place. [2023-08-29 20:54:39,513 INFO L119 LiptonReduction]: Number of co-enabled transitions 5548 [2023-08-29 20:55:52,159 WARN L222 SmtUtils]: Spent 22.82s on a formula simplification. DAG size of input: 232 DAG size of output: 224 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:56:04,312 WARN L222 SmtUtils]: Spent 12.15s on a formula simplification that was a NOOP. DAG size: 220 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:56:25,159 WARN L222 SmtUtils]: Spent 20.84s on a formula simplification. DAG size of input: 235 DAG size of output: 227 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:56:35,134 WARN L222 SmtUtils]: Spent 9.97s on a formula simplification that was a NOOP. DAG size: 223 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:58:43,792 WARN L222 SmtUtils]: Spent 2.14m on a formula simplification. DAG size of input: 276 DAG size of output: 269 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:59:44,669 WARN L222 SmtUtils]: Spent 1.01m on a formula simplification that was a NOOP. DAG size: 256 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:01:55,641 WARN L222 SmtUtils]: Spent 2.18m on a formula simplification. DAG size of input: 285 DAG size of output: 276 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:03:09,319 WARN L222 SmtUtils]: Spent 1.23m on a formula simplification that was a NOOP. DAG size: 262 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:03:19,890 WARN L222 SmtUtils]: Spent 10.57s on a formula simplification that was a NOOP. DAG size: 227 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:03:31,714 WARN L222 SmtUtils]: Spent 11.82s on a formula simplification that was a NOOP. DAG size: 225 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:03:50,619 WARN L222 SmtUtils]: Spent 18.90s on a formula simplification. DAG size of input: 236 DAG size of output: 234 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:03:59,430 WARN L222 SmtUtils]: Spent 8.81s on a formula simplification that was a NOOP. DAG size: 231 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:03:59,661 INFO L134 LiptonReduction]: Checked pairs total: 24110 [2023-08-29 21:03:59,662 INFO L136 LiptonReduction]: Total number of compositions: 243 [2023-08-29 21:03:59,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 21:03:59,678 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;@7921219b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 21:03:59,678 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-08-29 21:03:59,680 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 21:03:59,680 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:03:59,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:03:59,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 21:03:59,682 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:03:59,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:03:59,686 INFO L85 PathProgramCache]: Analyzing trace with hash 755, now seen corresponding path program 1 times [2023-08-29 21:03:59,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:03:59,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307558065] [2023-08-29 21:03:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:03:59,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:03:59,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:03:59,705 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:03:59,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-29 21:03:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:03:59,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-29 21:03:59,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:03:59,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:03:59,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:03:59,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:03:59,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307558065] [2023-08-29 21:03:59,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307558065] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:03:59,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:03:59,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 21:03:59,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302311991] [2023-08-29 21:03:59,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:03:59,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 21:03:59,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:03:59,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 21:03:59,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 21:03:59,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 463 [2023-08-29 21:03:59,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 180 flow. Second operand has 2 states, 2 states have (on average 204.5) internal successors, (409), 2 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:03:59,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:03:59,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 463 [2023-08-29 21:03:59,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:00,989 INFO L130 PetriNetUnfolder]: 778/2034 cut-off events. [2023-08-29 21:04:00,990 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-29 21:04:00,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3384 conditions, 2034 events. 778/2034 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 17144 event pairs, 777 based on Foata normal form. 0/1186 useless extension candidates. Maximal degree in co-relation 3238. Up to 1326 conditions per place. [2023-08-29 21:04:01,004 INFO L137 encePairwiseOnDemand]: 445/463 looper letters, 44 selfloop transitions, 0 changer transitions 0/66 dead transitions. [2023-08-29 21:04:01,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 232 flow [2023-08-29 21:04:01,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 21:04:01,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 21:04:01,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 470 transitions. [2023-08-29 21:04:01,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075593952483801 [2023-08-29 21:04:01,022 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 470 transitions. [2023-08-29 21:04:01,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 470 transitions. [2023-08-29 21:04:01,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:01,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 470 transitions. [2023-08-29 21:04:01,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 235.0) internal successors, (470), 2 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:01,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 463.0) internal successors, (1389), 3 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:01,035 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 463.0) internal successors, (1389), 3 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:01,036 INFO L175 Difference]: Start difference. First operand has 86 places, 84 transitions, 180 flow. Second operand 2 states and 470 transitions. [2023-08-29 21:04:01,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 232 flow [2023-08-29 21:04:01,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 66 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 21:04:01,043 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 136 flow [2023-08-29 21:04:01,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=136, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2023-08-29 21:04:01,048 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -18 predicate places. [2023-08-29 21:04:01,048 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 136 flow [2023-08-29 21:04:01,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 204.5) internal successors, (409), 2 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:01,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:01,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 21:04:01,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-08-29 21:04:01,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:01,267 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:01,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:01,267 INFO L85 PathProgramCache]: Analyzing trace with hash 24474, now seen corresponding path program 1 times [2023-08-29 21:04:01,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:01,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779170211] [2023-08-29 21:04:01,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:04:01,269 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:01,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:01,270 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:04:01,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-29 21:04:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:04:01,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 21:04:01,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:01,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:01,458 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:01,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779170211] [2023-08-29 21:04:01,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779170211] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:01,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:01,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:04:01,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920625248] [2023-08-29 21:04:01,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:01,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:04:01,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:01,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:04:01,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:04:01,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 463 [2023-08-29 21:04:01,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:01,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:01,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 463 [2023-08-29 21:04:01,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:02,771 INFO L130 PetriNetUnfolder]: 777/1572 cut-off events. [2023-08-29 21:04:02,771 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 21:04:02,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2916 conditions, 1572 events. 777/1572 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9972 event pairs, 777 based on Foata normal form. 0/1010 useless extension candidates. Maximal degree in co-relation 2913. Up to 1321 conditions per place. [2023-08-29 21:04:02,780 INFO L137 encePairwiseOnDemand]: 459/463 looper letters, 54 selfloop transitions, 1 changer transitions 1/78 dead transitions. [2023-08-29 21:04:02,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 78 transitions, 272 flow [2023-08-29 21:04:02,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:04:02,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:04:02,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 659 transitions. [2023-08-29 21:04:02,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744420446364291 [2023-08-29 21:04:02,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 659 transitions. [2023-08-29 21:04:02,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 659 transitions. [2023-08-29 21:04:02,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:02,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 659 transitions. [2023-08-29 21:04:02,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:02,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:02,794 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:02,795 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 136 flow. Second operand 3 states and 659 transitions. [2023-08-29 21:04:02,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 78 transitions, 272 flow [2023-08-29 21:04:02,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 78 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 21:04:02,798 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 145 flow [2023-08-29 21:04:02,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=71, PETRI_TRANSITIONS=66} [2023-08-29 21:04:02,799 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -15 predicate places. [2023-08-29 21:04:02,800 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 145 flow [2023-08-29 21:04:02,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:02,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:02,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:04:02,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-08-29 21:04:03,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:03,013 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:03,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:03,013 INFO L85 PathProgramCache]: Analyzing trace with hash 752065, now seen corresponding path program 1 times [2023-08-29 21:04:03,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:03,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574737427] [2023-08-29 21:04:03,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:04:03,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:03,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:03,018 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:04:03,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-29 21:04:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:04:03,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-29 21:04:03,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:03,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:03,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:04:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:03,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:03,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:03,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574737427] [2023-08-29 21:04:03,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574737427] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:03,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:03,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:04:03,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947977139] [2023-08-29 21:04:03,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:03,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:04:03,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:03,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:04:03,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:04:03,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 463 [2023-08-29 21:04:03,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:03,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:03,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 463 [2023-08-29 21:04:03,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:04,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:04:05,581 INFO L130 PetriNetUnfolder]: 768/1888 cut-off events. [2023-08-29 21:04:05,581 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-29 21:04:05,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3299 conditions, 1888 events. 768/1888 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 14823 event pairs, 768 based on Foata normal form. 0/1154 useless extension candidates. Maximal degree in co-relation 3294. Up to 1313 conditions per place. [2023-08-29 21:04:05,592 INFO L137 encePairwiseOnDemand]: 459/463 looper letters, 40 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-08-29 21:04:05,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 64 transitions, 225 flow [2023-08-29 21:04:05,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:04:05,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:04:05,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 647 transitions. [2023-08-29 21:04:05,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658027357811375 [2023-08-29 21:04:05,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 647 transitions. [2023-08-29 21:04:05,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 647 transitions. [2023-08-29 21:04:05,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:05,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 647 transitions. [2023-08-29 21:04:05,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:05,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:05,603 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:05,603 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 145 flow. Second operand 3 states and 647 transitions. [2023-08-29 21:04:05,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 64 transitions, 225 flow [2023-08-29 21:04:05,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 64 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:04:05,606 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 144 flow [2023-08-29 21:04:05,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2023-08-29 21:04:05,607 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -16 predicate places. [2023-08-29 21:04:05,607 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 144 flow [2023-08-29 21:04:05,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:05,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:05,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:04:05,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-29 21:04:05,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:05,820 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:05,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:05,821 INFO L85 PathProgramCache]: Analyzing trace with hash 752066, now seen corresponding path program 1 times [2023-08-29 21:04:05,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:05,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497203230] [2023-08-29 21:04:05,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:04:05,822 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:05,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:05,823 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:04:05,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-29 21:04:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:04:05,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 21:04:05,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:06,031 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-29 21:04:06,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-08-29 21:04:06,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:06,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:06,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:06,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497203230] [2023-08-29 21:04:06,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497203230] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:06,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:06,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:04:06,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087504520] [2023-08-29 21:04:06,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:06,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:04:06,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:06,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:04:06,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:04:06,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 463 [2023-08-29 21:04:06,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:06,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:06,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 463 [2023-08-29 21:04:06,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:07,454 INFO L130 PetriNetUnfolder]: 759/1870 cut-off events. [2023-08-29 21:04:07,455 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-29 21:04:07,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3263 conditions, 1870 events. 759/1870 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 14707 event pairs, 669 based on Foata normal form. 0/1150 useless extension candidates. Maximal degree in co-relation 3258. Up to 1128 conditions per place. [2023-08-29 21:04:07,464 INFO L137 encePairwiseOnDemand]: 452/463 looper letters, 50 selfloop transitions, 9 changer transitions 0/81 dead transitions. [2023-08-29 21:04:07,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 81 transitions, 296 flow [2023-08-29 21:04:07,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:04:07,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:04:07,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2023-08-29 21:04:07,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47588192944564434 [2023-08-29 21:04:07,468 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2023-08-29 21:04:07,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2023-08-29 21:04:07,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:07,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2023-08-29 21:04:07,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:07,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:07,476 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:07,476 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 144 flow. Second operand 3 states and 661 transitions. [2023-08-29 21:04:07,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 81 transitions, 296 flow [2023-08-29 21:04:07,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 81 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:04:07,479 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 169 flow [2023-08-29 21:04:07,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2023-08-29 21:04:07,481 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -16 predicate places. [2023-08-29 21:04:07,482 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 169 flow [2023-08-29 21:04:07,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:07,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:07,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:04:07,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-29 21:04:07,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:07,693 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:07,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:07,693 INFO L85 PathProgramCache]: Analyzing trace with hash 755639, now seen corresponding path program 1 times [2023-08-29 21:04:07,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:07,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001914201] [2023-08-29 21:04:07,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:04:07,694 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:07,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:07,695 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:04:07,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-29 21:04:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:04:07,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 21:04:07,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:07,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 21:04:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:07,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:07,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:07,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001914201] [2023-08-29 21:04:07,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001914201] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:07,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:07,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:04:07,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111386753] [2023-08-29 21:04:07,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:07,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:04:07,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:07,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:04:07,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:04:08,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 463 [2023-08-29 21:04:08,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 169 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) [2023-08-29 21:04:08,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:08,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 463 [2023-08-29 21:04:08,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:09,160 INFO L130 PetriNetUnfolder]: 759/1854 cut-off events. [2023-08-29 21:04:09,160 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-08-29 21:04:09,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3321 conditions, 1854 events. 759/1854 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 14353 event pairs, 669 based on Foata normal form. 0/1142 useless extension candidates. Maximal degree in co-relation 3315. Up to 1141 conditions per place. [2023-08-29 21:04:09,171 INFO L137 encePairwiseOnDemand]: 456/463 looper letters, 44 selfloop transitions, 6 changer transitions 0/70 dead transitions. [2023-08-29 21:04:09,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 70 transitions, 283 flow [2023-08-29 21:04:09,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:04:09,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:04:09,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 612 transitions. [2023-08-29 21:04:09,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4406047516198704 [2023-08-29 21:04:09,177 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 612 transitions. [2023-08-29 21:04:09,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 612 transitions. [2023-08-29 21:04:09,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:09,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 612 transitions. [2023-08-29 21:04:09,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:09,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:09,184 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:09,184 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 169 flow. Second operand 3 states and 612 transitions. [2023-08-29 21:04:09,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 70 transitions, 283 flow [2023-08-29 21:04:09,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:04:09,191 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 168 flow [2023-08-29 21:04:09,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2023-08-29 21:04:09,194 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -17 predicate places. [2023-08-29 21:04:09,194 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 168 flow [2023-08-29 21:04:09,195 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) [2023-08-29 21:04:09,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:09,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:04:09,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-29 21:04:09,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:09,406 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:09,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:09,407 INFO L85 PathProgramCache]: Analyzing trace with hash 755700, now seen corresponding path program 1 times [2023-08-29 21:04:09,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:09,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641061437] [2023-08-29 21:04:09,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:04:09,408 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:09,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:09,409 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:04:09,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-29 21:04:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:04:09,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 21:04:09,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:09,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-29 21:04:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:09,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:09,567 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:09,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641061437] [2023-08-29 21:04:09,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641061437] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:09,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:09,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:04:09,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812025919] [2023-08-29 21:04:09,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:09,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:04:09,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:09,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:04:09,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:04:09,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 463 [2023-08-29 21:04:09,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:09,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:09,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 463 [2023-08-29 21:04:09,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:11,211 INFO L130 PetriNetUnfolder]: 579/1376 cut-off events. [2023-08-29 21:04:11,211 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-29 21:04:11,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2546 conditions, 1376 events. 579/1376 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9787 event pairs, 345 based on Foata normal form. 29/945 useless extension candidates. Maximal degree in co-relation 2540. Up to 591 conditions per place. [2023-08-29 21:04:11,220 INFO L137 encePairwiseOnDemand]: 453/463 looper letters, 49 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2023-08-29 21:04:11,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 75 transitions, 306 flow [2023-08-29 21:04:11,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:04:11,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:04:11,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 641 transitions. [2023-08-29 21:04:11,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4614830813534917 [2023-08-29 21:04:11,223 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 641 transitions. [2023-08-29 21:04:11,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 641 transitions. [2023-08-29 21:04:11,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:11,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 641 transitions. [2023-08-29 21:04:11,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:11,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:11,229 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:11,229 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 168 flow. Second operand 3 states and 641 transitions. [2023-08-29 21:04:11,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 75 transitions, 306 flow [2023-08-29 21:04:11,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 75 transitions, 294 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:04:11,232 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 182 flow [2023-08-29 21:04:11,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2023-08-29 21:04:11,233 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -16 predicate places. [2023-08-29 21:04:11,233 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 182 flow [2023-08-29 21:04:11,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:11,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:11,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 21:04:11,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-08-29 21:04:11,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:11,445 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:11,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:11,446 INFO L85 PathProgramCache]: Analyzing trace with hash 23314436, now seen corresponding path program 1 times [2023-08-29 21:04:11,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:11,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412890330] [2023-08-29 21:04:11,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:04:11,446 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:11,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:11,447 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:04:11,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-08-29 21:04:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:04:11,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-29 21:04:11,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:11,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-29 21:04:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:11,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:11,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:11,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412890330] [2023-08-29 21:04:11,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1412890330] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:11,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:11,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:04:11,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485620885] [2023-08-29 21:04:11,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:11,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:04:11,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:11,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:04:11,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:04:12,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 463 [2023-08-29 21:04:12,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:12,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:12,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 463 [2023-08-29 21:04:12,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:14,803 INFO L130 PetriNetUnfolder]: 517/1034 cut-off events. [2023-08-29 21:04:14,803 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2023-08-29 21:04:14,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2273 conditions, 1034 events. 517/1034 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6070 event pairs, 215 based on Foata normal form. 42/853 useless extension candidates. Maximal degree in co-relation 2266. Up to 550 conditions per place. [2023-08-29 21:04:14,809 INFO L137 encePairwiseOnDemand]: 455/463 looper letters, 66 selfloop transitions, 8 changer transitions 1/94 dead transitions. [2023-08-29 21:04:14,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 94 transitions, 424 flow [2023-08-29 21:04:14,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:04:14,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:04:14,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 861 transitions. [2023-08-29 21:04:14,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46490280777537796 [2023-08-29 21:04:14,814 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 861 transitions. [2023-08-29 21:04:14,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 861 transitions. [2023-08-29 21:04:14,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:14,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 861 transitions. [2023-08-29 21:04:14,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 215.25) internal successors, (861), 4 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:14,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:14,820 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:14,820 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 182 flow. Second operand 4 states and 861 transitions. [2023-08-29 21:04:14,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 94 transitions, 424 flow [2023-08-29 21:04:14,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 94 transitions, 402 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:04:14,824 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 220 flow [2023-08-29 21:04:14,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2023-08-29 21:04:14,824 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -13 predicate places. [2023-08-29 21:04:14,825 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 220 flow [2023-08-29 21:04:14,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:14,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:14,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 21:04:14,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-08-29 21:04:15,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:15,037 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:15,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:15,038 INFO L85 PathProgramCache]: Analyzing trace with hash 23314435, now seen corresponding path program 1 times [2023-08-29 21:04:15,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:15,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471903614] [2023-08-29 21:04:15,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:04:15,039 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:15,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:15,040 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:04:15,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-08-29 21:04:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:04:15,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-29 21:04:15,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:15,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 21:04:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:15,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:15,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:15,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471903614] [2023-08-29 21:04:15,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471903614] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:15,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:15,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:04:15,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833483248] [2023-08-29 21:04:15,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:15,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:04:15,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:15,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:04:15,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:04:15,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 463 [2023-08-29 21:04:15,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:15,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:15,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 463 [2023-08-29 21:04:15,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:17,245 INFO L130 PetriNetUnfolder]: 561/1093 cut-off events. [2023-08-29 21:04:17,245 INFO L131 PetriNetUnfolder]: For 276/276 co-relation queries the response was YES. [2023-08-29 21:04:17,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2588 conditions, 1093 events. 561/1093 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6502 event pairs, 90 based on Foata normal form. 0/937 useless extension candidates. Maximal degree in co-relation 2579. Up to 648 conditions per place. [2023-08-29 21:04:17,250 INFO L137 encePairwiseOnDemand]: 448/463 looper letters, 68 selfloop transitions, 14 changer transitions 0/100 dead transitions. [2023-08-29 21:04:17,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 100 transitions, 465 flow [2023-08-29 21:04:17,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 21:04:17,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 21:04:17,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1045 transitions. [2023-08-29 21:04:17,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4514038876889849 [2023-08-29 21:04:17,255 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1045 transitions. [2023-08-29 21:04:17,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1045 transitions. [2023-08-29 21:04:17,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:17,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1045 transitions. [2023-08-29 21:04:17,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.0) internal successors, (1045), 5 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:17,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 463.0) internal successors, (2778), 6 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:17,262 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 463.0) internal successors, (2778), 6 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:17,262 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 220 flow. Second operand 5 states and 1045 transitions. [2023-08-29 21:04:17,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 100 transitions, 465 flow [2023-08-29 21:04:17,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 100 transitions, 445 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-29 21:04:17,267 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 298 flow [2023-08-29 21:04:17,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2023-08-29 21:04:17,269 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -7 predicate places. [2023-08-29 21:04:17,269 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 298 flow [2023-08-29 21:04:17,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:17,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:17,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 21:04:17,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-08-29 21:04:17,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:17,482 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:17,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:17,482 INFO L85 PathProgramCache]: Analyzing trace with hash 726180173, now seen corresponding path program 1 times [2023-08-29 21:04:17,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:17,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402300940] [2023-08-29 21:04:17,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:04:17,483 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:17,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:17,483 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:04:17,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-08-29 21:04:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:04:17,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 21:04:17,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:17,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 45 [2023-08-29 21:04:17,766 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 21:04:17,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 93 [2023-08-29 21:04:17,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:17,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:17,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:17,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402300940] [2023-08-29 21:04:17,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402300940] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:17,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:17,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:04:17,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955100191] [2023-08-29 21:04:17,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:17,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:04:17,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:17,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:04:17,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:04:18,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 463 [2023-08-29 21:04:18,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:18,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:18,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 463 [2023-08-29 21:04:18,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:21,014 INFO L130 PetriNetUnfolder]: 713/1567 cut-off events. [2023-08-29 21:04:21,015 INFO L131 PetriNetUnfolder]: For 1159/1244 co-relation queries the response was YES. [2023-08-29 21:04:21,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3782 conditions, 1567 events. 713/1567 cut-off events. For 1159/1244 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10689 event pairs, 426 based on Foata normal form. 7/1284 useless extension candidates. Maximal degree in co-relation 3771. Up to 1022 conditions per place. [2023-08-29 21:04:21,021 INFO L137 encePairwiseOnDemand]: 454/463 looper letters, 52 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2023-08-29 21:04:21,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 84 transitions, 476 flow [2023-08-29 21:04:21,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:04:21,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:04:21,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 623 transitions. [2023-08-29 21:04:21,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44852411807055437 [2023-08-29 21:04:21,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 623 transitions. [2023-08-29 21:04:21,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 623 transitions. [2023-08-29 21:04:21,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:21,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 623 transitions. [2023-08-29 21:04:21,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:21,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:21,029 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:21,029 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 298 flow. Second operand 3 states and 623 transitions. [2023-08-29 21:04:21,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 84 transitions, 476 flow [2023-08-29 21:04:21,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 84 transitions, 476 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 21:04:21,034 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 390 flow [2023-08-29 21:04:21,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=390, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2023-08-29 21:04:21,034 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -3 predicate places. [2023-08-29 21:04:21,035 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 390 flow [2023-08-29 21:04:21,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:21,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:21,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 21:04:21,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-08-29 21:04:21,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:21,248 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:21,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:21,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1036749589, now seen corresponding path program 1 times [2023-08-29 21:04:21,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:21,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724596685] [2023-08-29 21:04:21,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:04:21,249 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:21,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:21,250 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:04:21,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-08-29 21:04:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:04:21,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 21:04:21,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:21,457 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:04:21,458 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:04:21,458 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:04:21,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2023-08-29 21:04:21,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:21,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:21,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:21,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724596685] [2023-08-29 21:04:21,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724596685] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:21,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:21,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:04:21,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481894801] [2023-08-29 21:04:21,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:21,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:04:21,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:21,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:04:21,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:04:22,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 463 [2023-08-29 21:04:22,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 390 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:22,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:22,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 463 [2023-08-29 21:04:22,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:23,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:04:24,905 INFO L130 PetriNetUnfolder]: 910/1868 cut-off events. [2023-08-29 21:04:24,905 INFO L131 PetriNetUnfolder]: For 2608/2729 co-relation queries the response was YES. [2023-08-29 21:04:24,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5521 conditions, 1868 events. 910/1868 cut-off events. For 2608/2729 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12418 event pairs, 501 based on Foata normal form. 7/1607 useless extension candidates. Maximal degree in co-relation 5508. Up to 1261 conditions per place. [2023-08-29 21:04:24,914 INFO L137 encePairwiseOnDemand]: 454/463 looper letters, 58 selfloop transitions, 17 changer transitions 0/95 dead transitions. [2023-08-29 21:04:24,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 95 transitions, 638 flow [2023-08-29 21:04:24,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:04:24,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:04:24,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2023-08-29 21:04:24,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44924406047516197 [2023-08-29 21:04:24,917 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2023-08-29 21:04:24,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2023-08-29 21:04:24,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:24,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2023-08-29 21:04:24,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:24,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:24,921 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:24,922 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 390 flow. Second operand 3 states and 624 transitions. [2023-08-29 21:04:24,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 95 transitions, 638 flow [2023-08-29 21:04:24,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 95 transitions, 606 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:04:24,927 INFO L231 Difference]: Finished difference. Result has 85 places, 89 transitions, 524 flow [2023-08-29 21:04:24,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=524, PETRI_PLACES=85, PETRI_TRANSITIONS=89} [2023-08-29 21:04:24,928 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -1 predicate places. [2023-08-29 21:04:24,928 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 89 transitions, 524 flow [2023-08-29 21:04:24,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:24,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:24,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 21:04:24,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-08-29 21:04:25,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:25,142 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:25,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:25,142 INFO L85 PathProgramCache]: Analyzing trace with hash 930484587, now seen corresponding path program 1 times [2023-08-29 21:04:25,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:25,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747813316] [2023-08-29 21:04:25,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:04:25,143 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:25,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:25,144 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:04:25,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-08-29 21:04:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:04:25,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-29 21:04:25,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:25,357 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-29 21:04:25,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-08-29 21:04:25,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:25,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:25,400 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:25,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747813316] [2023-08-29 21:04:25,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [747813316] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:25,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:25,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:04:25,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295478483] [2023-08-29 21:04:25,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:25,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:04:25,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:25,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:04:25,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:04:25,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 463 [2023-08-29 21:04:25,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 89 transitions, 524 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:25,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:25,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 463 [2023-08-29 21:04:25,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:26,750 INFO L130 PetriNetUnfolder]: 772/1665 cut-off events. [2023-08-29 21:04:26,750 INFO L131 PetriNetUnfolder]: For 3259/3396 co-relation queries the response was YES. [2023-08-29 21:04:26,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5442 conditions, 1665 events. 772/1665 cut-off events. For 3259/3396 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 11272 event pairs, 414 based on Foata normal form. 0/1404 useless extension candidates. Maximal degree in co-relation 5428. Up to 984 conditions per place. [2023-08-29 21:04:26,760 INFO L137 encePairwiseOnDemand]: 453/463 looper letters, 55 selfloop transitions, 15 changer transitions 0/95 dead transitions. [2023-08-29 21:04:26,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 95 transitions, 684 flow [2023-08-29 21:04:26,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:04:26,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:04:26,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2023-08-29 21:04:26,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4679625629949604 [2023-08-29 21:04:26,763 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2023-08-29 21:04:26,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2023-08-29 21:04:26,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:26,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2023-08-29 21:04:26,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:26,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:26,768 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:26,768 INFO L175 Difference]: Start difference. First operand has 85 places, 89 transitions, 524 flow. Second operand 3 states and 650 transitions. [2023-08-29 21:04:26,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 95 transitions, 684 flow [2023-08-29 21:04:26,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 95 transitions, 650 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:04:26,774 INFO L231 Difference]: Finished difference. Result has 84 places, 87 transitions, 508 flow [2023-08-29 21:04:26,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=84, PETRI_TRANSITIONS=87} [2023-08-29 21:04:26,774 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -2 predicate places. [2023-08-29 21:04:26,774 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 87 transitions, 508 flow [2023-08-29 21:04:26,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:26,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:26,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 21:04:26,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-08-29 21:04:26,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:26,981 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:26,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:26,981 INFO L85 PathProgramCache]: Analyzing trace with hash 930484588, now seen corresponding path program 1 times [2023-08-29 21:04:26,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:26,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561868306] [2023-08-29 21:04:26,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:04:26,982 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:26,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:26,982 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:04:26,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-08-29 21:04:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:04:27,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-29 21:04:27,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:27,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:27,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:04:27,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:27,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:27,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:27,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561868306] [2023-08-29 21:04:27,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561868306] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:27,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:27,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:04:27,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696949268] [2023-08-29 21:04:27,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:27,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:04:27,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:27,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:04:27,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:04:27,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 463 [2023-08-29 21:04:27,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 87 transitions, 508 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:27,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:27,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 463 [2023-08-29 21:04:27,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:28,361 INFO L130 PetriNetUnfolder]: 734/1575 cut-off events. [2023-08-29 21:04:28,361 INFO L131 PetriNetUnfolder]: For 3078/3214 co-relation queries the response was YES. [2023-08-29 21:04:28,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5027 conditions, 1575 events. 734/1575 cut-off events. For 3078/3214 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10488 event pairs, 448 based on Foata normal form. 4/1304 useless extension candidates. Maximal degree in co-relation 5013. Up to 1191 conditions per place. [2023-08-29 21:04:28,369 INFO L137 encePairwiseOnDemand]: 460/463 looper letters, 58 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-08-29 21:04:28,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 85 transitions, 616 flow [2023-08-29 21:04:28,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:04:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:04:28,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 641 transitions. [2023-08-29 21:04:28,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4614830813534917 [2023-08-29 21:04:28,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 641 transitions. [2023-08-29 21:04:28,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 641 transitions. [2023-08-29 21:04:28,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:28,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 641 transitions. [2023-08-29 21:04:28,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:28,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:28,378 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:28,378 INFO L175 Difference]: Start difference. First operand has 84 places, 87 transitions, 508 flow. Second operand 3 states and 641 transitions. [2023-08-29 21:04:28,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 85 transitions, 616 flow [2023-08-29 21:04:28,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 85 transitions, 586 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:04:28,384 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 470 flow [2023-08-29 21:04:28,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=470, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2023-08-29 21:04:28,385 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -3 predicate places. [2023-08-29 21:04:28,385 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 470 flow [2023-08-29 21:04:28,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:28,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:28,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 21:04:28,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-08-29 21:04:28,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:28,598 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:28,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:28,599 INFO L85 PathProgramCache]: Analyzing trace with hash 930485032, now seen corresponding path program 1 times [2023-08-29 21:04:28,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:28,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110400831] [2023-08-29 21:04:28,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:04:28,599 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 [2023-08-29 21:04:28,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:28,601 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:04:28,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-08-29 21:04:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:04:28,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-29 21:04:28,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:28,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-29 21:04:28,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:28,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:28,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:28,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110400831] [2023-08-29 21:04:28,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110400831] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:28,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:28,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:04:28,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321268728] [2023-08-29 21:04:28,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:28,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:04:28,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:28,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:04:28,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:04:29,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 463 [2023-08-29 21:04:29,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 470 flow. Second operand has 4 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:29,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:29,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 463 [2023-08-29 21:04:29,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:32,202 INFO L130 PetriNetUnfolder]: 764/1676 cut-off events. [2023-08-29 21:04:32,202 INFO L131 PetriNetUnfolder]: For 2801/2916 co-relation queries the response was YES. [2023-08-29 21:04:32,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5130 conditions, 1676 events. 764/1676 cut-off events. For 2801/2916 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 11601 event pairs, 91 based on Foata normal form. 285/1789 useless extension candidates. Maximal degree in co-relation 5116. Up to 905 conditions per place. [2023-08-29 21:04:32,212 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 96 selfloop transitions, 6 changer transitions 1/125 dead transitions. [2023-08-29 21:04:32,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 125 transitions, 910 flow [2023-08-29 21:04:32,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:04:32,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:04:32,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 855 transitions. [2023-08-29 21:04:32,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46166306695464365 [2023-08-29 21:04:32,217 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 855 transitions. [2023-08-29 21:04:32,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 855 transitions. [2023-08-29 21:04:32,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:32,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 855 transitions. [2023-08-29 21:04:32,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:32,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:32,222 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:32,222 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 470 flow. Second operand 4 states and 855 transitions. [2023-08-29 21:04:32,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 125 transitions, 910 flow [2023-08-29 21:04:32,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 125 transitions, 908 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:04:32,228 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 509 flow [2023-08-29 21:04:32,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=509, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2023-08-29 21:04:32,229 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 1 predicate places. [2023-08-29 21:04:32,229 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 509 flow [2023-08-29 21:04:32,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:32,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:32,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 21:04:32,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-08-29 21:04:32,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:32,441 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:32,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:32,442 INFO L85 PathProgramCache]: Analyzing trace with hash 930485031, now seen corresponding path program 1 times [2023-08-29 21:04:32,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:32,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108646105] [2023-08-29 21:04:32,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:04:32,443 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:32,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:32,444 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:04:32,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-08-29 21:04:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:04:32,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-29 21:04:32,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:32,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 21:04:32,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:32,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:32,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:32,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108646105] [2023-08-29 21:04:32,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108646105] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:32,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:32,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:04:32,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186210520] [2023-08-29 21:04:32,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:32,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:04:32,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:32,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:04:32,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:04:33,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 463 [2023-08-29 21:04:33,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 509 flow. Second operand has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:33,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:33,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 463 [2023-08-29 21:04:33,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:35,661 INFO L130 PetriNetUnfolder]: 1131/2072 cut-off events. [2023-08-29 21:04:35,661 INFO L131 PetriNetUnfolder]: For 3890/4040 co-relation queries the response was YES. [2023-08-29 21:04:35,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7116 conditions, 2072 events. 1131/2072 cut-off events. For 3890/4040 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12259 event pairs, 231 based on Foata normal form. 190/2104 useless extension candidates. Maximal degree in co-relation 7100. Up to 1117 conditions per place. [2023-08-29 21:04:35,671 INFO L137 encePairwiseOnDemand]: 448/463 looper letters, 97 selfloop transitions, 22 changer transitions 0/136 dead transitions. [2023-08-29 21:04:35,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 136 transitions, 1010 flow [2023-08-29 21:04:35,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 21:04:35,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 21:04:35,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1047 transitions. [2023-08-29 21:04:35,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45226781857451404 [2023-08-29 21:04:35,677 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1047 transitions. [2023-08-29 21:04:35,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1047 transitions. [2023-08-29 21:04:35,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:35,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1047 transitions. [2023-08-29 21:04:35,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.4) internal successors, (1047), 5 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:35,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 463.0) internal successors, (2778), 6 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:35,683 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 463.0) internal successors, (2778), 6 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:35,683 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 509 flow. Second operand 5 states and 1047 transitions. [2023-08-29 21:04:35,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 136 transitions, 1010 flow [2023-08-29 21:04:35,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 136 transitions, 1005 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:04:35,706 INFO L231 Difference]: Finished difference. Result has 94 places, 96 transitions, 682 flow [2023-08-29 21:04:35,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=682, PETRI_PLACES=94, PETRI_TRANSITIONS=96} [2023-08-29 21:04:35,707 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 8 predicate places. [2023-08-29 21:04:35,707 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 96 transitions, 682 flow [2023-08-29 21:04:35,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:35,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:35,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:04:35,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-08-29 21:04:35,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:35,931 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:35,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:35,931 INFO L85 PathProgramCache]: Analyzing trace with hash -116036107, now seen corresponding path program 1 times [2023-08-29 21:04:35,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:35,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904092053] [2023-08-29 21:04:35,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:04:35,932 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:35,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:35,933 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:04:35,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-08-29 21:04:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:04:36,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 21:04:36,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:36,329 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_187| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_187| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_187|)))) is different from true [2023-08-29 21:04:36,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:36,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:36,330 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:36,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904092053] [2023-08-29 21:04:36,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904092053] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:36,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:36,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:04:36,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474316990] [2023-08-29 21:04:36,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:36,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:04:36,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:36,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:04:36,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-08-29 21:04:36,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 463 [2023-08-29 21:04:36,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 96 transitions, 682 flow. Second operand has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:36,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:36,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 463 [2023-08-29 21:04:36,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:37,598 INFO L130 PetriNetUnfolder]: 1848/3148 cut-off events. [2023-08-29 21:04:37,599 INFO L131 PetriNetUnfolder]: For 7934/7934 co-relation queries the response was YES. [2023-08-29 21:04:37,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11584 conditions, 3148 events. 1848/3148 cut-off events. For 7934/7934 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 17848 event pairs, 757 based on Foata normal form. 0/2855 useless extension candidates. Maximal degree in co-relation 11565. Up to 1526 conditions per place. [2023-08-29 21:04:37,635 INFO L137 encePairwiseOnDemand]: 441/463 looper letters, 84 selfloop transitions, 32 changer transitions 2/125 dead transitions. [2023-08-29 21:04:37,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 125 transitions, 1076 flow [2023-08-29 21:04:37,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:04:37,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:04:37,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 632 transitions. [2023-08-29 21:04:37,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3412526997840173 [2023-08-29 21:04:37,638 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 632 transitions. [2023-08-29 21:04:37,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 632 transitions. [2023-08-29 21:04:37,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:37,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 632 transitions. [2023-08-29 21:04:37,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:37,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:37,643 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:37,643 INFO L175 Difference]: Start difference. First operand has 94 places, 96 transitions, 682 flow. Second operand 4 states and 632 transitions. [2023-08-29 21:04:37,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 125 transitions, 1076 flow [2023-08-29 21:04:37,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 125 transitions, 1076 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 21:04:37,652 INFO L231 Difference]: Finished difference. Result has 98 places, 111 transitions, 888 flow [2023-08-29 21:04:37,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=888, PETRI_PLACES=98, PETRI_TRANSITIONS=111} [2023-08-29 21:04:37,653 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 12 predicate places. [2023-08-29 21:04:37,653 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 111 transitions, 888 flow [2023-08-29 21:04:37,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:37,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:37,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:04:37,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-08-29 21:04:37,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:37,866 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:37,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:37,867 INFO L85 PathProgramCache]: Analyzing trace with hash 985146853, now seen corresponding path program 1 times [2023-08-29 21:04:37,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:37,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528789610] [2023-08-29 21:04:37,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:04:37,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:37,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:37,868 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:04:37,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-08-29 21:04:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:04:38,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-29 21:04:38,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:38,102 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 5 [2023-08-29 21:04:38,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 21:04:38,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:38,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:04:38,204 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-29 21:04:38,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-29 21:04:38,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:38,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:38,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:38,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528789610] [2023-08-29 21:04:38,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528789610] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:38,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:38,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:04:38,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618479252] [2023-08-29 21:04:38,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:38,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:04:38,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:38,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:04:38,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:04:38,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 463 [2023-08-29 21:04:38,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 111 transitions, 888 flow. Second operand has 5 states, 5 states have (on average 189.6) internal successors, (948), 5 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:38,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:38,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 463 [2023-08-29 21:04:38,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:40,926 INFO L130 PetriNetUnfolder]: 1651/2976 cut-off events. [2023-08-29 21:04:40,926 INFO L131 PetriNetUnfolder]: For 9526/9633 co-relation queries the response was YES. [2023-08-29 21:04:40,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12123 conditions, 2976 events. 1651/2976 cut-off events. For 9526/9633 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 18633 event pairs, 470 based on Foata normal form. 28/2808 useless extension candidates. Maximal degree in co-relation 12102. Up to 1585 conditions per place. [2023-08-29 21:04:40,937 INFO L137 encePairwiseOnDemand]: 448/463 looper letters, 103 selfloop transitions, 25 changer transitions 0/154 dead transitions. [2023-08-29 21:04:40,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 154 transitions, 1401 flow [2023-08-29 21:04:40,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 21:04:40,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 21:04:40,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1211 transitions. [2023-08-29 21:04:40,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4359251259899208 [2023-08-29 21:04:40,941 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1211 transitions. [2023-08-29 21:04:40,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1211 transitions. [2023-08-29 21:04:40,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:40,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1211 transitions. [2023-08-29 21:04:40,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 201.83333333333334) internal successors, (1211), 6 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:40,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:40,947 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:40,947 INFO L175 Difference]: Start difference. First operand has 98 places, 111 transitions, 888 flow. Second operand 6 states and 1211 transitions. [2023-08-29 21:04:40,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 154 transitions, 1401 flow [2023-08-29 21:04:40,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 154 transitions, 1317 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-08-29 21:04:40,983 INFO L231 Difference]: Finished difference. Result has 97 places, 109 transitions, 880 flow [2023-08-29 21:04:40,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=880, PETRI_PLACES=97, PETRI_TRANSITIONS=109} [2023-08-29 21:04:40,984 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 11 predicate places. [2023-08-29 21:04:40,985 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 109 transitions, 880 flow [2023-08-29 21:04:40,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 189.6) internal successors, (948), 5 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:40,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:40,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:04:41,004 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 [2023-08-29 21:04:41,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:41,199 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:41,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:41,199 INFO L85 PathProgramCache]: Analyzing trace with hash 842498780, now seen corresponding path program 1 times [2023-08-29 21:04:41,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:41,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921466214] [2023-08-29 21:04:41,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:04:41,200 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:41,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:41,201 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:04:41,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-08-29 21:04:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:04:41,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-29 21:04:41,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:41,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-29 21:04:41,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 21:04:41,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:41,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:04:41,519 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-29 21:04:41,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-29 21:04:41,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:41,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:41,530 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:41,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921466214] [2023-08-29 21:04:41,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921466214] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:41,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:41,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:04:41,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813858587] [2023-08-29 21:04:41,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:41,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:04:41,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:41,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:04:41,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:04:42,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 463 [2023-08-29 21:04:42,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 109 transitions, 880 flow. Second operand has 5 states, 5 states have (on average 189.6) internal successors, (948), 5 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:42,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:42,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 463 [2023-08-29 21:04:42,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:43,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:04:44,668 INFO L130 PetriNetUnfolder]: 2036/3646 cut-off events. [2023-08-29 21:04:44,668 INFO L131 PetriNetUnfolder]: For 11967/12125 co-relation queries the response was YES. [2023-08-29 21:04:44,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15215 conditions, 3646 events. 2036/3646 cut-off events. For 11967/12125 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 23645 event pairs, 667 based on Foata normal form. 33/3521 useless extension candidates. Maximal degree in co-relation 15194. Up to 2080 conditions per place. [2023-08-29 21:04:44,681 INFO L137 encePairwiseOnDemand]: 448/463 looper letters, 124 selfloop transitions, 25 changer transitions 0/164 dead transitions. [2023-08-29 21:04:44,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 164 transitions, 1531 flow [2023-08-29 21:04:44,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 21:04:44,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 21:04:44,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1220 transitions. [2023-08-29 21:04:44,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43916486681065514 [2023-08-29 21:04:44,685 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1220 transitions. [2023-08-29 21:04:44,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1220 transitions. [2023-08-29 21:04:44,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:44,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1220 transitions. [2023-08-29 21:04:44,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 203.33333333333334) internal successors, (1220), 6 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:44,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:44,691 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:44,691 INFO L175 Difference]: Start difference. First operand has 97 places, 109 transitions, 880 flow. Second operand 6 states and 1220 transitions. [2023-08-29 21:04:44,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 164 transitions, 1531 flow [2023-08-29 21:04:44,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 164 transitions, 1496 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 21:04:44,711 INFO L231 Difference]: Finished difference. Result has 96 places, 107 transitions, 919 flow [2023-08-29 21:04:44,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=919, PETRI_PLACES=96, PETRI_TRANSITIONS=107} [2023-08-29 21:04:44,711 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 10 predicate places. [2023-08-29 21:04:44,711 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 107 transitions, 919 flow [2023-08-29 21:04:44,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 189.6) internal successors, (948), 5 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:44,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:44,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:04:44,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-08-29 21:04:44,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:44,919 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:44,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:44,920 INFO L85 PathProgramCache]: Analyzing trace with hash 930438315, now seen corresponding path program 1 times [2023-08-29 21:04:44,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:44,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285882707] [2023-08-29 21:04:44,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:04:44,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:44,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:44,921 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:04:44,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-08-29 21:04:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:04:45,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 21:04:45,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:45,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:45,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:45,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:45,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285882707] [2023-08-29 21:04:45,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285882707] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:45,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:45,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:04:45,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129190158] [2023-08-29 21:04:45,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:45,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:04:45,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:45,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:04:45,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:04:45,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 463 [2023-08-29 21:04:45,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 107 transitions, 919 flow. Second operand has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:45,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:45,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 463 [2023-08-29 21:04:45,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:46,623 INFO L130 PetriNetUnfolder]: 107/263 cut-off events. [2023-08-29 21:04:46,623 INFO L131 PetriNetUnfolder]: For 677/719 co-relation queries the response was YES. [2023-08-29 21:04:46,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980 conditions, 263 events. 107/263 cut-off events. For 677/719 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1078 event pairs, 25 based on Foata normal form. 23/266 useless extension candidates. Maximal degree in co-relation 959. Up to 161 conditions per place. [2023-08-29 21:04:46,625 INFO L137 encePairwiseOnDemand]: 461/463 looper letters, 41 selfloop transitions, 1 changer transitions 1/54 dead transitions. [2023-08-29 21:04:46,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 54 transitions, 451 flow [2023-08-29 21:04:46,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:04:46,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:04:46,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 636 transitions. [2023-08-29 21:04:46,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45788336933045354 [2023-08-29 21:04:46,626 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 636 transitions. [2023-08-29 21:04:46,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 636 transitions. [2023-08-29 21:04:46,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:46,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 636 transitions. [2023-08-29 21:04:46,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:46,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:46,629 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:46,629 INFO L175 Difference]: Start difference. First operand has 96 places, 107 transitions, 919 flow. Second operand 3 states and 636 transitions. [2023-08-29 21:04:46,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 54 transitions, 451 flow [2023-08-29 21:04:46,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 54 transitions, 269 flow, removed 25 selfloop flow, removed 23 redundant places. [2023-08-29 21:04:46,632 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 153 flow [2023-08-29 21:04:46,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2023-08-29 21:04:46,632 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -24 predicate places. [2023-08-29 21:04:46,633 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 153 flow [2023-08-29 21:04:46,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:46,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:46,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:04:46,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-08-29 21:04:46,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:46,846 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:46,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:46,846 INFO L85 PathProgramCache]: Analyzing trace with hash -487331399, now seen corresponding path program 1 times [2023-08-29 21:04:46,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:46,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900235714] [2023-08-29 21:04:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:04:46,847 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:46,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:46,848 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:04:46,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-08-29 21:04:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:04:47,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 21:04:47,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:47,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-29 21:04:47,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:47,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:47,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:47,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900235714] [2023-08-29 21:04:47,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900235714] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:47,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:47,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:04:47,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101407659] [2023-08-29 21:04:47,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:47,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:04:47,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:47,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:04:47,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:04:47,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 463 [2023-08-29 21:04:47,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:47,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:47,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 463 [2023-08-29 21:04:47,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:48,669 INFO L130 PetriNetUnfolder]: 102/254 cut-off events. [2023-08-29 21:04:48,669 INFO L131 PetriNetUnfolder]: For 154/158 co-relation queries the response was YES. [2023-08-29 21:04:48,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 254 events. 102/254 cut-off events. For 154/158 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 988 event pairs, 55 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 663. Up to 120 conditions per place. [2023-08-29 21:04:48,670 INFO L137 encePairwiseOnDemand]: 454/463 looper letters, 30 selfloop transitions, 10 changer transitions 0/49 dead transitions. [2023-08-29 21:04:48,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 49 transitions, 249 flow [2023-08-29 21:04:48,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:04:48,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:04:48,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 633 transitions. [2023-08-29 21:04:48,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557235421166307 [2023-08-29 21:04:48,672 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 633 transitions. [2023-08-29 21:04:48,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 633 transitions. [2023-08-29 21:04:48,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:48,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 633 transitions. [2023-08-29 21:04:48,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:48,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:48,674 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:48,674 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 153 flow. Second operand 3 states and 633 transitions. [2023-08-29 21:04:48,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 49 transitions, 249 flow [2023-08-29 21:04:48,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 49 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:04:48,675 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 168 flow [2023-08-29 21:04:48,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2023-08-29 21:04:48,676 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -26 predicate places. [2023-08-29 21:04:48,676 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 168 flow [2023-08-29 21:04:48,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:48,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:48,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:04:48,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-08-29 21:04:48,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:48,877 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:48,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:48,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1341240180, now seen corresponding path program 1 times [2023-08-29 21:04:48,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:48,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399635506] [2023-08-29 21:04:48,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:04:48,878 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:48,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:48,879 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:04:48,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-08-29 21:04:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:04:49,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 21:04:49,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:49,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 21:04:49,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:49,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:49,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:49,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399635506] [2023-08-29 21:04:49,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399635506] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:49,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:49,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:04:49,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967342030] [2023-08-29 21:04:49,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:49,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:04:49,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:49,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:04:49,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:04:49,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 463 [2023-08-29 21:04:49,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:49,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:49,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 463 [2023-08-29 21:04:49,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:50,822 INFO L130 PetriNetUnfolder]: 102/248 cut-off events. [2023-08-29 21:04:50,822 INFO L131 PetriNetUnfolder]: For 188/192 co-relation queries the response was YES. [2023-08-29 21:04:50,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 248 events. 102/248 cut-off events. For 188/192 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 956 event pairs, 55 based on Foata normal form. 1/237 useless extension candidates. Maximal degree in co-relation 683. Up to 120 conditions per place. [2023-08-29 21:04:50,823 INFO L137 encePairwiseOnDemand]: 454/463 looper letters, 30 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2023-08-29 21:04:50,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 47 transitions, 264 flow [2023-08-29 21:04:50,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:04:50,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:04:50,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2023-08-29 21:04:50,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44924406047516197 [2023-08-29 21:04:50,825 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2023-08-29 21:04:50,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2023-08-29 21:04:50,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:50,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2023-08-29 21:04:50,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:50,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:50,837 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:50,837 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 168 flow. Second operand 3 states and 624 transitions. [2023-08-29 21:04:50,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 47 transitions, 264 flow [2023-08-29 21:04:50,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 47 transitions, 244 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:04:50,839 INFO L231 Difference]: Finished difference. Result has 58 places, 42 transitions, 164 flow [2023-08-29 21:04:50,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=58, PETRI_TRANSITIONS=42} [2023-08-29 21:04:50,839 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -28 predicate places. [2023-08-29 21:04:50,839 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 42 transitions, 164 flow [2023-08-29 21:04:50,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:50,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:50,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:04:50,855 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 (21)] Forceful destruction successful, exit code 0 [2023-08-29 21:04:51,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:51,053 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:51,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:51,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2072499635, now seen corresponding path program 1 times [2023-08-29 21:04:51,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:51,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837697101] [2023-08-29 21:04:51,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:04:51,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:51,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:51,055 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:04:51,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-08-29 21:04:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:04:51,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-29 21:04:51,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:51,405 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 [2023-08-29 21:04:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:51,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:51,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:51,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837697101] [2023-08-29 21:04:51,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837697101] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:51,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:51,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:04:51,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530104123] [2023-08-29 21:04:51,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:51,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:04:51,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:51,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:04:51,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:04:51,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 463 [2023-08-29 21:04:51,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 42 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 203.5) internal successors, (814), 4 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:51,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:51,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 463 [2023-08-29 21:04:51,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:52,655 INFO L130 PetriNetUnfolder]: 46/153 cut-off events. [2023-08-29 21:04:52,655 INFO L131 PetriNetUnfolder]: For 117/120 co-relation queries the response was YES. [2023-08-29 21:04:52,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 153 events. 46/153 cut-off events. For 117/120 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 503 event pairs, 17 based on Foata normal form. 15/160 useless extension candidates. Maximal degree in co-relation 417. Up to 74 conditions per place. [2023-08-29 21:04:52,656 INFO L137 encePairwiseOnDemand]: 458/463 looper letters, 37 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2023-08-29 21:04:52,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 51 transitions, 287 flow [2023-08-29 21:04:52,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:04:52,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:04:52,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 835 transitions. [2023-08-29 21:04:52,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4508639308855292 [2023-08-29 21:04:52,658 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 835 transitions. [2023-08-29 21:04:52,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 835 transitions. [2023-08-29 21:04:52,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:52,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 835 transitions. [2023-08-29 21:04:52,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 208.75) internal successors, (835), 4 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:52,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:52,661 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:52,661 INFO L175 Difference]: Start difference. First operand has 58 places, 42 transitions, 164 flow. Second operand 4 states and 835 transitions. [2023-08-29 21:04:52,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 51 transitions, 287 flow [2023-08-29 21:04:52,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 246 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-29 21:04:52,662 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 143 flow [2023-08-29 21:04:52,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2023-08-29 21:04:52,662 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -29 predicate places. [2023-08-29 21:04:52,662 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 143 flow [2023-08-29 21:04:52,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 203.5) internal successors, (814), 4 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:52,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:52,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:04:52,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-08-29 21:04:52,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:52,865 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:52,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:52,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1978086337, now seen corresponding path program 2 times [2023-08-29 21:04:52,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:52,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069827362] [2023-08-29 21:04:52,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 21:04:52,866 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:52,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:52,867 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:04:52,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-08-29 21:04:53,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 21:04:53,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:04:53,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-29 21:04:53,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:53,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:53,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:53,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:53,433 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:04:53,433 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:04:53,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2023-08-29 21:04:53,509 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 21:04:53,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 73 [2023-08-29 21:04:53,603 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:04:53,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 39 treesize of output 39 [2023-08-29 21:04:53,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:53,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:53,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:53,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069827362] [2023-08-29 21:04:53,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069827362] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:53,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:53,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 21:04:53,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680519993] [2023-08-29 21:04:53,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:53,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 21:04:53,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:53,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 21:04:53,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-29 21:04:54,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 463 [2023-08-29 21:04:54,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 143 flow. Second operand has 7 states, 7 states have (on average 185.71428571428572) internal successors, (1300), 7 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:54,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:54,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 463 [2023-08-29 21:04:54,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:57,036 INFO L130 PetriNetUnfolder]: 62/187 cut-off events. [2023-08-29 21:04:57,036 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-29 21:04:57,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 187 events. 62/187 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 614 event pairs, 17 based on Foata normal form. 1/172 useless extension candidates. Maximal degree in co-relation 484. Up to 62 conditions per place. [2023-08-29 21:04:57,037 INFO L137 encePairwiseOnDemand]: 448/463 looper letters, 47 selfloop transitions, 18 changer transitions 0/71 dead transitions. [2023-08-29 21:04:57,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 71 transitions, 375 flow [2023-08-29 21:04:57,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 21:04:57,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 21:04:57,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1160 transitions. [2023-08-29 21:04:57,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175665946724262 [2023-08-29 21:04:57,040 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1160 transitions. [2023-08-29 21:04:57,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1160 transitions. [2023-08-29 21:04:57,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:57,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1160 transitions. [2023-08-29 21:04:57,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 193.33333333333334) internal successors, (1160), 6 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:57,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:57,046 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:57,046 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 143 flow. Second operand 6 states and 1160 transitions. [2023-08-29 21:04:57,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 71 transitions, 375 flow [2023-08-29 21:04:57,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 71 transitions, 364 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:04:57,047 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 246 flow [2023-08-29 21:04:57,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2023-08-29 21:04:57,048 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -25 predicate places. [2023-08-29 21:04:57,048 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 246 flow [2023-08-29 21:04:57,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 185.71428571428572) internal successors, (1300), 7 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:57,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:57,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:04:57,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-08-29 21:04:57,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:57,249 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:57,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:57,249 INFO L85 PathProgramCache]: Analyzing trace with hash -936881934, now seen corresponding path program 1 times [2023-08-29 21:04:57,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:57,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395677168] [2023-08-29 21:04:57,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:04:57,250 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:57,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:57,253 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:04:57,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-08-29 21:04:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:04:57,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 21:04:57,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:57,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 21:04:57,681 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-29 21:04:57,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-08-29 21:04:57,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:57,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:57,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:57,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395677168] [2023-08-29 21:04:57,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395677168] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:57,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:57,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:04:57,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564974736] [2023-08-29 21:04:57,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:57,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:04:57,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:57,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:04:57,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:04:58,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 463 [2023-08-29 21:04:58,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 246 flow. Second operand has 5 states, 5 states have (on average 183.6) internal successors, (918), 5 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:58,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:58,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 463 [2023-08-29 21:04:58,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:59,956 INFO L130 PetriNetUnfolder]: 54/179 cut-off events. [2023-08-29 21:04:59,956 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2023-08-29 21:04:59,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 179 events. 54/179 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 607 event pairs, 24 based on Foata normal form. 1/171 useless extension candidates. Maximal degree in co-relation 491. Up to 82 conditions per place. [2023-08-29 21:04:59,957 INFO L137 encePairwiseOnDemand]: 454/463 looper letters, 31 selfloop transitions, 18 changer transitions 0/55 dead transitions. [2023-08-29 21:04:59,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 343 flow [2023-08-29 21:04:59,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:04:59,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:04:59,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 757 transitions. [2023-08-29 21:04:59,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4087473002159827 [2023-08-29 21:04:59,959 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 757 transitions. [2023-08-29 21:04:59,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 757 transitions. [2023-08-29 21:04:59,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:59,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 757 transitions. [2023-08-29 21:04:59,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 189.25) internal successors, (757), 4 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:59,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:59,962 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:59,962 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 246 flow. Second operand 4 states and 757 transitions. [2023-08-29 21:04:59,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 343 flow [2023-08-29 21:04:59,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 338 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:04:59,963 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 257 flow [2023-08-29 21:04:59,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=257, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2023-08-29 21:04:59,964 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -25 predicate places. [2023-08-29 21:04:59,964 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 257 flow [2023-08-29 21:04:59,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 183.6) internal successors, (918), 5 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:59,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:59,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:04:59,977 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 (24)] Forceful destruction successful, exit code 0 [2023-08-29 21:05:00,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:05:00,169 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:05:00,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:05:00,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1017490362, now seen corresponding path program 1 times [2023-08-29 21:05:00,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:05:00,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466829776] [2023-08-29 21:05:00,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:05:00,171 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:05:00,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:05:00,172 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:05:00,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-08-29 21:05:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:05:00,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-29 21:05:00,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:05:00,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-29 21:05:00,721 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:05:00,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 55 [2023-08-29 21:05:00,783 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-29 21:05:00,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-29 21:05:00,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:00,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-29 21:05:01,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-29 21:05:01,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:01,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:01,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:01,450 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:05:01,451 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:05:01,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-29 21:05:01,822 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:05:01,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 71 treesize of output 71 [2023-08-29 21:05:01,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 110 [2023-08-29 21:05:02,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 118 [2023-08-29 21:05:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:05:05,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:05:05,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:05:05,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466829776] [2023-08-29 21:05:05,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466829776] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:05:05,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:05:05,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-29 21:05:05,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295750123] [2023-08-29 21:05:05,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:05:05,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 21:05:05,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:05:05,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 21:05:05,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-29 21:05:19,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 463 [2023-08-29 21:05:19,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 257 flow. Second operand has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:19,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:05:19,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 463 [2023-08-29 21:05:19,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:05:27,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 21:05:28,245 INFO L130 PetriNetUnfolder]: 114/308 cut-off events. [2023-08-29 21:05:28,245 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2023-08-29 21:05:28,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 308 events. 114/308 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1242 event pairs, 28 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 917. Up to 178 conditions per place. [2023-08-29 21:05:28,246 INFO L137 encePairwiseOnDemand]: 448/463 looper letters, 86 selfloop transitions, 26 changer transitions 0/115 dead transitions. [2023-08-29 21:05:28,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 115 transitions, 767 flow [2023-08-29 21:05:28,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 21:05:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 21:05:28,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2193 transitions. [2023-08-29 21:05:28,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39470842332613393 [2023-08-29 21:05:28,249 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2193 transitions. [2023-08-29 21:05:28,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2193 transitions. [2023-08-29 21:05:28,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:05:28,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2193 transitions. [2023-08-29 21:05:28,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 182.75) internal successors, (2193), 12 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:28,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 463.0) internal successors, (6019), 13 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:28,258 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 463.0) internal successors, (6019), 13 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:28,258 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 257 flow. Second operand 12 states and 2193 transitions. [2023-08-29 21:05:28,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 115 transitions, 767 flow [2023-08-29 21:05:28,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 115 transitions, 703 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 21:05:28,261 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 429 flow [2023-08-29 21:05:28,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=429, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2023-08-29 21:05:28,262 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -12 predicate places. [2023-08-29 21:05:28,262 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 429 flow [2023-08-29 21:05:28,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:28,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:05:28,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:05:28,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-08-29 21:05:28,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:05:28,478 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:05:28,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:05:28,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1768874920, now seen corresponding path program 2 times [2023-08-29 21:05:28,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:05:28,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571017913] [2023-08-29 21:05:28,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 21:05:28,479 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:05:28,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:05:28,480 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:05:28,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-08-29 21:05:29,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 21:05:29,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:05:29,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-29 21:05:29,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:05:29,112 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-29 21:05:29,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-29 21:05:29,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-29 21:05:29,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:29,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-29 21:05:29,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:29,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-29 21:05:29,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-29 21:05:29,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:29,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:29,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:29,805 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:05:29,806 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:05:29,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-29 21:05:29,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-29 21:05:30,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-08-29 21:05:30,129 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:05:30,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 215 [2023-08-29 21:05:30,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:05:30,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:05:30,268 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:05:30,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571017913] [2023-08-29 21:05:30,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571017913] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:05:30,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:05:30,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-29 21:05:30,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665776061] [2023-08-29 21:05:30,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:05:30,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 21:05:30,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:05:30,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 21:05:30,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-29 21:05:33,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 463 [2023-08-29 21:05:33,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 429 flow. Second operand has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:33,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:05:33,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 463 [2023-08-29 21:05:33,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:05:38,142 INFO L130 PetriNetUnfolder]: 118/328 cut-off events. [2023-08-29 21:05:38,143 INFO L131 PetriNetUnfolder]: For 322/322 co-relation queries the response was YES. [2023-08-29 21:05:38,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1130 conditions, 328 events. 118/328 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1387 event pairs, 38 based on Foata normal form. 1/319 useless extension candidates. Maximal degree in co-relation 1115. Up to 212 conditions per place. [2023-08-29 21:05:38,144 INFO L137 encePairwiseOnDemand]: 447/463 looper letters, 87 selfloop transitions, 24 changer transitions 0/114 dead transitions. [2023-08-29 21:05:38,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 114 transitions, 826 flow [2023-08-29 21:05:38,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-29 21:05:38,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-29 21:05:38,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2013 transitions. [2023-08-29 21:05:38,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952483801295896 [2023-08-29 21:05:38,147 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2013 transitions. [2023-08-29 21:05:38,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2013 transitions. [2023-08-29 21:05:38,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:05:38,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2013 transitions. [2023-08-29 21:05:38,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:38,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:38,155 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:38,155 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 429 flow. Second operand 11 states and 2013 transitions. [2023-08-29 21:05:38,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 114 transitions, 826 flow [2023-08-29 21:05:38,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 114 transitions, 822 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-29 21:05:38,158 INFO L231 Difference]: Finished difference. Result has 86 places, 79 transitions, 533 flow [2023-08-29 21:05:38,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=533, PETRI_PLACES=86, PETRI_TRANSITIONS=79} [2023-08-29 21:05:38,159 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 0 predicate places. [2023-08-29 21:05:38,159 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 79 transitions, 533 flow [2023-08-29 21:05:38,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:38,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:05:38,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:05:38,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-08-29 21:05:38,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:05:38,374 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:05:38,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:05:38,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1962004304, now seen corresponding path program 3 times [2023-08-29 21:05:38,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:05:38,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10222352] [2023-08-29 21:05:38,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 21:05:38,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:05:38,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:05:38,376 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:05:38,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-08-29 21:05:38,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-29 21:05:38,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:05:38,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-29 21:05:38,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:05:38,870 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-29 21:05:38,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-29 21:05:38,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-29 21:05:38,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:38,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-29 21:05:39,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:39,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-29 21:05:39,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-29 21:05:39,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:39,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:39,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:39,415 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:05:39,415 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:05:39,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-29 21:05:39,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-29 21:05:39,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 58 [2023-08-29 21:05:39,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:39,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:39,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:39,709 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:05:39,709 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:05:39,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 209 [2023-08-29 21:05:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:05:39,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:05:39,777 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:05:39,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10222352] [2023-08-29 21:05:39,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10222352] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:05:39,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:05:39,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-29 21:05:39,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187367006] [2023-08-29 21:05:39,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:05:39,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-29 21:05:39,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:05:39,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-29 21:05:39,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-08-29 21:05:42,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 463 [2023-08-29 21:05:42,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 79 transitions, 533 flow. Second operand has 11 states, 11 states have (on average 179.9090909090909) internal successors, (1979), 11 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:42,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:05:42,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 463 [2023-08-29 21:05:42,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:05:48,092 INFO L130 PetriNetUnfolder]: 119/340 cut-off events. [2023-08-29 21:05:48,092 INFO L131 PetriNetUnfolder]: For 437/437 co-relation queries the response was YES. [2023-08-29 21:05:48,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1246 conditions, 340 events. 119/340 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1483 event pairs, 32 based on Foata normal form. 1/329 useless extension candidates. Maximal degree in co-relation 1228. Up to 223 conditions per place. [2023-08-29 21:05:48,093 INFO L137 encePairwiseOnDemand]: 450/463 looper letters, 93 selfloop transitions, 22 changer transitions 0/118 dead transitions. [2023-08-29 21:05:48,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 118 transitions, 937 flow [2023-08-29 21:05:48,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-29 21:05:48,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-29 21:05:48,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2047 transitions. [2023-08-29 21:05:48,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40192420969958764 [2023-08-29 21:05:48,095 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2047 transitions. [2023-08-29 21:05:48,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2047 transitions. [2023-08-29 21:05:48,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:05:48,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2047 transitions. [2023-08-29 21:05:48,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 186.0909090909091) internal successors, (2047), 11 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:48,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:48,103 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:48,103 INFO L175 Difference]: Start difference. First operand has 86 places, 79 transitions, 533 flow. Second operand 11 states and 2047 transitions. [2023-08-29 21:05:48,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 118 transitions, 937 flow [2023-08-29 21:05:48,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 118 transitions, 898 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-29 21:05:48,107 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 553 flow [2023-08-29 21:05:48,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=553, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2023-08-29 21:05:48,108 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2023-08-29 21:05:48,108 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 553 flow [2023-08-29 21:05:48,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 179.9090909090909) internal successors, (1979), 11 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:48,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:05:48,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:05:48,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-08-29 21:05:48,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:05:48,317 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:05:48,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:05:48,317 INFO L85 PathProgramCache]: Analyzing trace with hash -491551967, now seen corresponding path program 1 times [2023-08-29 21:05:48,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:05:48,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103086187] [2023-08-29 21:05:48,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:05:48,318 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:05:48,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:05:48,319 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:05:48,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-08-29 21:05:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:05:48,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-29 21:05:48,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:05:48,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:05:48,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:05:48,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:05:48,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103086187] [2023-08-29 21:05:48,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103086187] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:05:48,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:05:48,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:05:48,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669377520] [2023-08-29 21:05:48,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:05:48,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:05:48,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:05:48,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:05:48,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:05:49,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 463 [2023-08-29 21:05:49,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 553 flow. Second operand has 5 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:49,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:05:49,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 463 [2023-08-29 21:05:49,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:05:50,082 INFO L130 PetriNetUnfolder]: 128/425 cut-off events. [2023-08-29 21:05:50,082 INFO L131 PetriNetUnfolder]: For 657/658 co-relation queries the response was YES. [2023-08-29 21:05:50,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 425 events. 128/425 cut-off events. For 657/658 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2299 event pairs, 56 based on Foata normal form. 11/420 useless extension candidates. Maximal degree in co-relation 1518. Up to 213 conditions per place. [2023-08-29 21:05:50,084 INFO L137 encePairwiseOnDemand]: 450/463 looper letters, 88 selfloop transitions, 22 changer transitions 0/117 dead transitions. [2023-08-29 21:05:50,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 117 transitions, 1035 flow [2023-08-29 21:05:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 21:05:50,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 21:05:50,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1168 transitions. [2023-08-29 21:05:50,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42044636429085674 [2023-08-29 21:05:50,086 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1168 transitions. [2023-08-29 21:05:50,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1168 transitions. [2023-08-29 21:05:50,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:05:50,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1168 transitions. [2023-08-29 21:05:50,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 194.66666666666666) internal successors, (1168), 6 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:50,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:50,090 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:50,090 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 553 flow. Second operand 6 states and 1168 transitions. [2023-08-29 21:05:50,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 117 transitions, 1035 flow [2023-08-29 21:05:50,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 117 transitions, 981 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-29 21:05:50,093 INFO L231 Difference]: Finished difference. Result has 85 places, 88 transitions, 708 flow [2023-08-29 21:05:50,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=708, PETRI_PLACES=85, PETRI_TRANSITIONS=88} [2023-08-29 21:05:50,094 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -1 predicate places. [2023-08-29 21:05:50,094 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 88 transitions, 708 flow [2023-08-29 21:05:50,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:50,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:05:50,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:05:50,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-08-29 21:05:50,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:05:50,297 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:05:50,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:05:50,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1236749071, now seen corresponding path program 2 times [2023-08-29 21:05:50,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:05:50,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945985323] [2023-08-29 21:05:50,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 21:05:50,298 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:05:50,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:05:50,299 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:05:50,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-08-29 21:05:50,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 21:05:50,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:05:50,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-29 21:05:50,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:05:50,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:05:50,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:05:50,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:05:50,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945985323] [2023-08-29 21:05:50,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945985323] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:05:50,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:05:50,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:05:50,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290260525] [2023-08-29 21:05:50,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:05:50,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:05:50,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:05:50,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:05:50,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:05:51,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 463 [2023-08-29 21:05:51,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 88 transitions, 708 flow. Second operand has 5 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:51,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:05:51,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 463 [2023-08-29 21:05:51,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:05:52,704 INFO L130 PetriNetUnfolder]: 149/491 cut-off events. [2023-08-29 21:05:52,705 INFO L131 PetriNetUnfolder]: For 1081/1082 co-relation queries the response was YES. [2023-08-29 21:05:52,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1810 conditions, 491 events. 149/491 cut-off events. For 1081/1082 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2852 event pairs, 20 based on Foata normal form. 12/499 useless extension candidates. Maximal degree in co-relation 1789. Up to 258 conditions per place. [2023-08-29 21:05:52,706 INFO L137 encePairwiseOnDemand]: 453/463 looper letters, 86 selfloop transitions, 24 changer transitions 0/118 dead transitions. [2023-08-29 21:05:52,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 118 transitions, 1112 flow [2023-08-29 21:05:52,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 21:05:52,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 21:05:52,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1168 transitions. [2023-08-29 21:05:52,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42044636429085674 [2023-08-29 21:05:52,708 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1168 transitions. [2023-08-29 21:05:52,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1168 transitions. [2023-08-29 21:05:52,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:05:52,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1168 transitions. [2023-08-29 21:05:52,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 194.66666666666666) internal successors, (1168), 6 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:52,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:52,711 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:52,712 INFO L175 Difference]: Start difference. First operand has 85 places, 88 transitions, 708 flow. Second operand 6 states and 1168 transitions. [2023-08-29 21:05:52,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 118 transitions, 1112 flow [2023-08-29 21:05:52,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 118 transitions, 1073 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-29 21:05:52,715 INFO L231 Difference]: Finished difference. Result has 88 places, 95 transitions, 850 flow [2023-08-29 21:05:52,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=850, PETRI_PLACES=88, PETRI_TRANSITIONS=95} [2023-08-29 21:05:52,715 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 2 predicate places. [2023-08-29 21:05:52,716 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 95 transitions, 850 flow [2023-08-29 21:05:52,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:52,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:05:52,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:05:52,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-08-29 21:05:52,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:05:52,929 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:05:52,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:05:52,929 INFO L85 PathProgramCache]: Analyzing trace with hash -579667442, now seen corresponding path program 4 times [2023-08-29 21:05:52,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:05:52,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167583492] [2023-08-29 21:05:52,930 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 21:05:52,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:05:52,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:05:52,931 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:05:52,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-08-29 21:05:53,339 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 21:05:53,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:05:53,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-29 21:05:53,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:05:53,399 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-29 21:05:53,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-29 21:05:53,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-29 21:05:53,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:53,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-29 21:05:53,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:53,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-29 21:05:53,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-29 21:05:54,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:54,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:54,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:54,041 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:05:54,041 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:05:54,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-29 21:05:54,162 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:05:54,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 71 treesize of output 71 [2023-08-29 21:05:54,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 110 [2023-08-29 21:05:54,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 118 [2023-08-29 21:05:56,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:05:56,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:05:56,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:05:56,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167583492] [2023-08-29 21:05:56,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167583492] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:05:56,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:05:56,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-29 21:05:56,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067147099] [2023-08-29 21:05:56,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:05:56,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 21:05:56,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:05:56,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 21:05:56,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-29 21:06:05,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 463 [2023-08-29 21:06:05,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 95 transitions, 850 flow. Second operand has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:05,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:06:05,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 463 [2023-08-29 21:06:05,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:06:12,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 21:06:13,635 INFO L130 PetriNetUnfolder]: 178/550 cut-off events. [2023-08-29 21:06:13,635 INFO L131 PetriNetUnfolder]: For 1587/1587 co-relation queries the response was YES. [2023-08-29 21:06:13,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2210 conditions, 550 events. 178/550 cut-off events. For 1587/1587 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3195 event pairs, 61 based on Foata normal form. 2/549 useless extension candidates. Maximal degree in co-relation 2188. Up to 319 conditions per place. [2023-08-29 21:06:13,638 INFO L137 encePairwiseOnDemand]: 449/463 looper letters, 104 selfloop transitions, 33 changer transitions 0/139 dead transitions. [2023-08-29 21:06:13,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 139 transitions, 1386 flow [2023-08-29 21:06:13,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 21:06:13,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 21:06:13,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2364 transitions. [2023-08-29 21:06:13,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39275627180594785 [2023-08-29 21:06:13,640 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2364 transitions. [2023-08-29 21:06:13,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2364 transitions. [2023-08-29 21:06:13,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:06:13,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2364 transitions. [2023-08-29 21:06:13,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 181.84615384615384) internal successors, (2364), 13 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:13,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 463.0) internal successors, (6482), 14 states have internal predecessors, (6482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:13,647 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 463.0) internal successors, (6482), 14 states have internal predecessors, (6482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:13,647 INFO L175 Difference]: Start difference. First operand has 88 places, 95 transitions, 850 flow. Second operand 13 states and 2364 transitions. [2023-08-29 21:06:13,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 139 transitions, 1386 flow [2023-08-29 21:06:13,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 139 transitions, 1326 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-29 21:06:13,653 INFO L231 Difference]: Finished difference. Result has 100 places, 99 transitions, 939 flow [2023-08-29 21:06:13,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=939, PETRI_PLACES=100, PETRI_TRANSITIONS=99} [2023-08-29 21:06:13,654 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 14 predicate places. [2023-08-29 21:06:13,654 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 99 transitions, 939 flow [2023-08-29 21:06:13,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:13,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:06:13,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:06:13,667 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 (30)] Ended with exit code 0 [2023-08-29 21:06:13,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:06:13,859 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:06:13,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:06:13,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1690661023, now seen corresponding path program 3 times [2023-08-29 21:06:13,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:06:13,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523113664] [2023-08-29 21:06:13,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 21:06:13,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:06:13,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:06:13,863 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:06:13,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-08-29 21:06:14,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-29 21:06:14,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:06:14,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-29 21:06:14,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:06:14,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-29 21:06:14,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 21:06:14,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:06:14,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:06:14,418 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-29 21:06:14,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-29 21:06:14,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:06:14,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:06:14,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:06:14,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523113664] [2023-08-29 21:06:14,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523113664] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:06:14,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:06:14,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:06:14,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604351311] [2023-08-29 21:06:14,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:06:14,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:06:14,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:06:14,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:06:14,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:06:14,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 463 [2023-08-29 21:06:14,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 99 transitions, 939 flow. Second operand has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:14,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:06:14,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 463 [2023-08-29 21:06:14,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:06:15,481 INFO L130 PetriNetUnfolder]: 137/478 cut-off events. [2023-08-29 21:06:15,481 INFO L131 PetriNetUnfolder]: For 1667/1680 co-relation queries the response was YES. [2023-08-29 21:06:15,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 478 events. 137/478 cut-off events. For 1667/1680 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2834 event pairs, 87 based on Foata normal form. 8/467 useless extension candidates. Maximal degree in co-relation 1945. Up to 410 conditions per place. [2023-08-29 21:06:15,483 INFO L137 encePairwiseOnDemand]: 459/463 looper letters, 77 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2023-08-29 21:06:15,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 93 transitions, 1022 flow [2023-08-29 21:06:15,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:06:15,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:06:15,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 561 transitions. [2023-08-29 21:06:15,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4038876889848812 [2023-08-29 21:06:15,485 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 561 transitions. [2023-08-29 21:06:15,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 561 transitions. [2023-08-29 21:06:15,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:06:15,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 561 transitions. [2023-08-29 21:06:15,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:15,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:15,487 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:15,487 INFO L175 Difference]: Start difference. First operand has 100 places, 99 transitions, 939 flow. Second operand 3 states and 561 transitions. [2023-08-29 21:06:15,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 93 transitions, 1022 flow [2023-08-29 21:06:15,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 93 transitions, 934 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-08-29 21:06:15,493 INFO L231 Difference]: Finished difference. Result has 90 places, 93 transitions, 780 flow [2023-08-29 21:06:15,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=780, PETRI_PLACES=90, PETRI_TRANSITIONS=93} [2023-08-29 21:06:15,493 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 4 predicate places. [2023-08-29 21:06:15,493 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 93 transitions, 780 flow [2023-08-29 21:06:15,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:15,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:06:15,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:06:15,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-08-29 21:06:15,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:06:15,694 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:06:15,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:06:15,695 INFO L85 PathProgramCache]: Analyzing trace with hash 91935326, now seen corresponding path program 5 times [2023-08-29 21:06:15,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:06:15,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097188888] [2023-08-29 21:06:15,696 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 21:06:15,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:06:15,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:06:15,697 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:06:15,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-08-29 21:06:16,195 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 21:06:16,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:06:16,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-29 21:06:16,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:06:16,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-29 21:06:16,255 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:06:16,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 55 [2023-08-29 21:06:16,300 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-29 21:06:16,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-29 21:06:16,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-29 21:06:16,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:06:16,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-08-29 21:06:16,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:06:16,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:06:16,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:06:16,759 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:06:16,759 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:06:16,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-29 21:06:16,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-29 21:06:17,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-08-29 21:06:17,239 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:06:17,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 215 [2023-08-29 21:06:17,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:06:17,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:06:17,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:06:17,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097188888] [2023-08-29 21:06:17,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097188888] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:06:17,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:06:17,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-29 21:06:17,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700472063] [2023-08-29 21:06:17,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:06:17,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 21:06:17,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:06:17,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 21:06:17,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-08-29 21:06:20,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 463 [2023-08-29 21:06:20,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 93 transitions, 780 flow. Second operand has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:20,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:06:20,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 463 [2023-08-29 21:06:20,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:06:29,477 INFO L130 PetriNetUnfolder]: 205/634 cut-off events. [2023-08-29 21:06:29,477 INFO L131 PetriNetUnfolder]: For 1642/1642 co-relation queries the response was YES. [2023-08-29 21:06:29,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2471 conditions, 634 events. 205/634 cut-off events. For 1642/1642 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3902 event pairs, 65 based on Foata normal form. 3/634 useless extension candidates. Maximal degree in co-relation 2448. Up to 356 conditions per place. [2023-08-29 21:06:29,480 INFO L137 encePairwiseOnDemand]: 449/463 looper letters, 99 selfloop transitions, 45 changer transitions 0/146 dead transitions. [2023-08-29 21:06:29,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 146 transitions, 1392 flow [2023-08-29 21:06:29,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-29 21:06:29,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-29 21:06:29,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2005 transitions. [2023-08-29 21:06:29,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3936775967013548 [2023-08-29 21:06:29,482 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2005 transitions. [2023-08-29 21:06:29,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2005 transitions. [2023-08-29 21:06:29,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:06:29,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2005 transitions. [2023-08-29 21:06:29,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 182.27272727272728) internal successors, (2005), 11 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:29,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:29,487 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:29,487 INFO L175 Difference]: Start difference. First operand has 90 places, 93 transitions, 780 flow. Second operand 11 states and 2005 transitions. [2023-08-29 21:06:29,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 146 transitions, 1392 flow [2023-08-29 21:06:29,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 146 transitions, 1388 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:06:29,493 INFO L231 Difference]: Finished difference. Result has 105 places, 112 transitions, 1137 flow [2023-08-29 21:06:29,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1137, PETRI_PLACES=105, PETRI_TRANSITIONS=112} [2023-08-29 21:06:29,494 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 19 predicate places. [2023-08-29 21:06:29,494 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 112 transitions, 1137 flow [2023-08-29 21:06:29,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:29,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:06:29,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:06:29,508 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 (32)] Forceful destruction successful, exit code 0 [2023-08-29 21:06:29,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:06:29,700 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:06:29,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:06:29,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1140300478, now seen corresponding path program 6 times [2023-08-29 21:06:29,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:06:29,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587552375] [2023-08-29 21:06:29,701 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 21:06:29,701 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:06:29,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:06:29,702 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:06:29,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-08-29 21:06:30,169 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-29 21:06:30,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:06:30,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 64 conjunts are in the unsatisfiable core [2023-08-29 21:06:30,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:06:30,214 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-29 21:06:30,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-29 21:06:30,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-29 21:06:30,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:06:30,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-29 21:06:30,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-29 21:06:30,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2023-08-29 21:06:30,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:06:30,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:06:30,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:06:30,547 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:06:30,547 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:06:30,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 65 [2023-08-29 21:06:30,727 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:06:30,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 71 treesize of output 71 [2023-08-29 21:06:30,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 110 [2023-08-29 21:06:30,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 118 [2023-08-29 21:06:33,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:06:33,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:06:33,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:06:33,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587552375] [2023-08-29 21:06:33,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587552375] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:06:33,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:06:33,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-29 21:06:33,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781184187] [2023-08-29 21:06:33,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:06:33,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-29 21:06:33,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:06:33,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-29 21:06:33,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-08-29 21:06:47,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 463 [2023-08-29 21:06:47,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 112 transitions, 1137 flow. Second operand has 11 states, 11 states have (on average 177.9090909090909) internal successors, (1957), 11 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:47,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:06:47,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 463 [2023-08-29 21:06:47,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:06:55,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 21:06:55,755 INFO L130 PetriNetUnfolder]: 260/791 cut-off events. [2023-08-29 21:06:55,755 INFO L131 PetriNetUnfolder]: For 3058/3058 co-relation queries the response was YES. [2023-08-29 21:06:55,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3449 conditions, 791 events. 260/791 cut-off events. For 3058/3058 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5185 event pairs, 143 based on Foata normal form. 4/792 useless extension candidates. Maximal degree in co-relation 3419. Up to 613 conditions per place. [2023-08-29 21:06:55,759 INFO L137 encePairwiseOnDemand]: 450/463 looper letters, 132 selfloop transitions, 29 changer transitions 0/163 dead transitions. [2023-08-29 21:06:55,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 163 transitions, 1857 flow [2023-08-29 21:06:55,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 21:06:55,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 21:06:55,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2363 transitions. [2023-08-29 21:06:55,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39259013125103837 [2023-08-29 21:06:55,761 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2363 transitions. [2023-08-29 21:06:55,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2363 transitions. [2023-08-29 21:06:55,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:06:55,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2363 transitions. [2023-08-29 21:06:55,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 181.76923076923077) internal successors, (2363), 13 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:55,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 463.0) internal successors, (6482), 14 states have internal predecessors, (6482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:55,767 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 463.0) internal successors, (6482), 14 states have internal predecessors, (6482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:55,767 INFO L175 Difference]: Start difference. First operand has 105 places, 112 transitions, 1137 flow. Second operand 13 states and 2363 transitions. [2023-08-29 21:06:55,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 163 transitions, 1857 flow [2023-08-29 21:06:55,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 163 transitions, 1795 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-08-29 21:06:55,778 INFO L231 Difference]: Finished difference. Result has 125 places, 135 transitions, 1485 flow [2023-08-29 21:06:55,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1485, PETRI_PLACES=125, PETRI_TRANSITIONS=135} [2023-08-29 21:06:55,779 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 39 predicate places. [2023-08-29 21:06:55,779 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 135 transitions, 1485 flow [2023-08-29 21:06:55,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 177.9090909090909) internal successors, (1957), 11 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:55,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:06:55,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:06:55,792 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 (33)] Ended with exit code 0 [2023-08-29 21:06:55,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:06:55,983 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:06:55,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:06:55,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1631537234, now seen corresponding path program 7 times [2023-08-29 21:06:55,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:06:55,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312060054] [2023-08-29 21:06:55,984 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 21:06:55,984 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:06:55,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:06:55,985 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:06:55,985 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 (34)] Waiting until timeout for monitored process [2023-08-29 21:06:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:06:56,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-29 21:06:56,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:06:56,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-29 21:06:56,554 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:06:56,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 55 [2023-08-29 21:06:56,594 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-29 21:06:56,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-29 21:06:56,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:06:56,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-29 21:06:56,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-29 21:06:57,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:06:57,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:06:57,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:06:57,141 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:06:57,142 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:06:57,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-29 21:06:57,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-29 21:06:57,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-08-29 21:06:57,475 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:06:57,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 215 [2023-08-29 21:06:57,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:06:57,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:06:57,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:06:57,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312060054] [2023-08-29 21:06:57,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312060054] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:06:57,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:06:57,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-29 21:06:57,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133422285] [2023-08-29 21:06:57,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:06:57,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 21:06:57,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:06:57,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 21:06:57,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-29 21:07:00,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 463 [2023-08-29 21:07:00,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 135 transitions, 1485 flow. Second operand has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:07:00,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:07:00,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 463 [2023-08-29 21:07:00,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:07:04,248 INFO L130 PetriNetUnfolder]: 257/786 cut-off events. [2023-08-29 21:07:04,248 INFO L131 PetriNetUnfolder]: For 3488/3488 co-relation queries the response was YES. [2023-08-29 21:07:04,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3615 conditions, 786 events. 257/786 cut-off events. For 3488/3488 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5176 event pairs, 153 based on Foata normal form. 0/786 useless extension candidates. Maximal degree in co-relation 3574. Up to 663 conditions per place. [2023-08-29 21:07:04,252 INFO L137 encePairwiseOnDemand]: 449/463 looper letters, 138 selfloop transitions, 22 changer transitions 0/162 dead transitions. [2023-08-29 21:07:04,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 162 transitions, 1965 flow [2023-08-29 21:07:04,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-29 21:07:04,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-29 21:07:04,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1989 transitions. [2023-08-29 21:07:04,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3905360298448851 [2023-08-29 21:07:04,254 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1989 transitions. [2023-08-29 21:07:04,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1989 transitions. [2023-08-29 21:07:04,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:07:04,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1989 transitions. [2023-08-29 21:07:04,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 180.8181818181818) internal successors, (1989), 11 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:07:04,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:07:04,258 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:07:04,258 INFO L175 Difference]: Start difference. First operand has 125 places, 135 transitions, 1485 flow. Second operand 11 states and 1989 transitions. [2023-08-29 21:07:04,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 162 transitions, 1965 flow [2023-08-29 21:07:04,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 162 transitions, 1901 flow, removed 32 selfloop flow, removed 0 redundant places. [2023-08-29 21:07:04,271 INFO L231 Difference]: Finished difference. Result has 139 places, 140 transitions, 1551 flow [2023-08-29 21:07:04,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1551, PETRI_PLACES=139, PETRI_TRANSITIONS=140} [2023-08-29 21:07:04,271 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 53 predicate places. [2023-08-29 21:07:04,271 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 140 transitions, 1551 flow [2023-08-29 21:07:04,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:07:04,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:07:04,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:07:04,284 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 (34)] Forceful destruction successful, exit code 0 [2023-08-29 21:07:04,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:04,472 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:07:04,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:07:04,472 INFO L85 PathProgramCache]: Analyzing trace with hash 403770754, now seen corresponding path program 8 times [2023-08-29 21:07:04,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:07:04,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804299975] [2023-08-29 21:07:04,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 21:07:04,473 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:04,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:07:04,474 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:07:04,475 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 (35)] Waiting until timeout for monitored process [2023-08-29 21:07:04,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 21:07:04,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:07:04,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-29 21:07:04,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:07:05,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-29 21:07:05,038 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:07:05,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 55 [2023-08-29 21:07:05,083 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-29 21:07:05,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-29 21:07:05,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-29 21:07:05,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:07:05,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:07:05,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:07:05,482 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:07:05,483 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:07:05,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-29 21:07:05,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:07:05,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-08-29 21:07:05,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-29 21:07:05,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-08-29 21:07:06,053 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:07:06,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 215 [2023-08-29 21:07:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:07:06,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:07:06,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:07:06,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804299975] [2023-08-29 21:07:06,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804299975] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:07:06,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:07:06,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-29 21:07:06,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212597724] [2023-08-29 21:07:06,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:07:06,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 21:07:06,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:07:06,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 21:07:06,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-29 21:07:09,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 463 [2023-08-29 21:07:09,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 140 transitions, 1551 flow. Second operand has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:07:09,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:07:09,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 463 [2023-08-29 21:07:09,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:07:15,341 INFO L130 PetriNetUnfolder]: 257/792 cut-off events. [2023-08-29 21:07:15,341 INFO L131 PetriNetUnfolder]: For 3519/3519 co-relation queries the response was YES. [2023-08-29 21:07:15,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3628 conditions, 792 events. 257/792 cut-off events. For 3519/3519 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5259 event pairs, 71 based on Foata normal form. 2/794 useless extension candidates. Maximal degree in co-relation 3582. Up to 364 conditions per place. [2023-08-29 21:07:15,345 INFO L137 encePairwiseOnDemand]: 450/463 looper letters, 101 selfloop transitions, 75 changer transitions 0/178 dead transitions. [2023-08-29 21:07:15,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 178 transitions, 2142 flow [2023-08-29 21:07:15,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-29 21:07:15,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-29 21:07:15,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2004 transitions. [2023-08-29 21:07:15,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3934812487728254 [2023-08-29 21:07:15,348 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2004 transitions. [2023-08-29 21:07:15,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2004 transitions. [2023-08-29 21:07:15,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:07:15,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2004 transitions. [2023-08-29 21:07:15,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 182.1818181818182) internal successors, (2004), 11 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:07:15,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:07:15,354 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:07:15,354 INFO L175 Difference]: Start difference. First operand has 139 places, 140 transitions, 1551 flow. Second operand 11 states and 2004 transitions. [2023-08-29 21:07:15,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 178 transitions, 2142 flow [2023-08-29 21:07:15,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 178 transitions, 1996 flow, removed 30 selfloop flow, removed 6 redundant places. [2023-08-29 21:07:15,375 INFO L231 Difference]: Finished difference. Result has 148 places, 148 transitions, 1772 flow [2023-08-29 21:07:15,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1772, PETRI_PLACES=148, PETRI_TRANSITIONS=148} [2023-08-29 21:07:15,376 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 62 predicate places. [2023-08-29 21:07:15,376 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 148 transitions, 1772 flow [2023-08-29 21:07:15,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:07:15,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:07:15,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:07:15,395 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 (35)] Forceful destruction successful, exit code 0 [2023-08-29 21:07:15,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:15,593 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:07:15,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:07:15,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1334699784, now seen corresponding path program 9 times [2023-08-29 21:07:15,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:07:15,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817012093] [2023-08-29 21:07:15,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 21:07:15,594 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:15,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:07:15,595 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:07:15,596 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 (36)] Waiting until timeout for monitored process [2023-08-29 21:07:16,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-29 21:07:16,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:07:16,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-29 21:07:16,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:07:16,163 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-29 21:07:16,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-29 21:07:16,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-29 21:07:16,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:07:16,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-29 21:07:16,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-29 21:07:16,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:07:16,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:07:16,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:07:16,567 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:07:16,567 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:07:16,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-29 21:07:16,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:07:16,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-08-29 21:07:16,968 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:07:16,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 71 treesize of output 71 [2023-08-29 21:07:17,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 110 [2023-08-29 21:07:17,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 118 [2023-08-29 21:07:19,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:07:19,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:07:19,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:07:19,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1817012093] [2023-08-29 21:07:19,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1817012093] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:07:19,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:07:19,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-29 21:07:19,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46193888] [2023-08-29 21:07:19,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:07:19,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 21:07:19,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:07:19,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 21:07:19,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-29 21:07:24,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 21:07:28,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 21:07:38,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 21:07:40,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 21:07:45,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 21:07:49,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 463 [2023-08-29 21:07:49,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 148 transitions, 1772 flow. Second operand has 12 states, 12 states have (on average 175.75) internal successors, (2109), 12 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:07:49,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:07:49,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 463 [2023-08-29 21:07:49,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:07:56,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 21:07:57,582 INFO L130 PetriNetUnfolder]: 269/841 cut-off events. [2023-08-29 21:07:57,582 INFO L131 PetriNetUnfolder]: For 4773/4773 co-relation queries the response was YES. [2023-08-29 21:07:57,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4035 conditions, 841 events. 269/841 cut-off events. For 4773/4773 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5721 event pairs, 56 based on Foata normal form. 4/845 useless extension candidates. Maximal degree in co-relation 3987. Up to 306 conditions per place. [2023-08-29 21:07:57,586 INFO L137 encePairwiseOnDemand]: 450/463 looper letters, 107 selfloop transitions, 81 changer transitions 0/190 dead transitions. [2023-08-29 21:07:57,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 190 transitions, 2433 flow [2023-08-29 21:07:57,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 21:07:57,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 21:07:57,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2172 transitions. [2023-08-29 21:07:57,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39092872570194387 [2023-08-29 21:07:57,588 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2172 transitions. [2023-08-29 21:07:57,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2172 transitions. [2023-08-29 21:07:57,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:07:57,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2172 transitions. [2023-08-29 21:07:57,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 181.0) internal successors, (2172), 12 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:07:57,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 463.0) internal successors, (6019), 13 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:07:57,594 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 463.0) internal successors, (6019), 13 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:07:57,594 INFO L175 Difference]: Start difference. First operand has 148 places, 148 transitions, 1772 flow. Second operand 12 states and 2172 transitions. [2023-08-29 21:07:57,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 190 transitions, 2433 flow [2023-08-29 21:07:57,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 190 transitions, 2335 flow, removed 24 selfloop flow, removed 5 redundant places. [2023-08-29 21:07:57,618 INFO L231 Difference]: Finished difference. Result has 156 places, 155 transitions, 2010 flow [2023-08-29 21:07:57,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=1680, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2010, PETRI_PLACES=156, PETRI_TRANSITIONS=155} [2023-08-29 21:07:57,619 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 70 predicate places. [2023-08-29 21:07:57,619 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 155 transitions, 2010 flow [2023-08-29 21:07:57,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 175.75) internal successors, (2109), 12 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:07:57,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:07:57,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:07:57,636 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 (36)] Forceful destruction successful, exit code 0 [2023-08-29 21:07:57,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:57,833 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:07:57,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:07:57,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1584952404, now seen corresponding path program 10 times [2023-08-29 21:07:57,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:07:57,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052894149] [2023-08-29 21:07:57,834 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 21:07:57,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:07:57,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:07:57,835 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:07:57,835 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 (37)] Waiting until timeout for monitored process [2023-08-29 21:07:58,295 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 21:07:58,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:07:58,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-29 21:07:58,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:07:58,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-29 21:07:58,376 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:07:58,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 55 [2023-08-29 21:07:58,435 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-29 21:07:58,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-29 21:07:58,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-29 21:07:58,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:07:58,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:07:58,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:07:58,797 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:07:58,797 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:07:58,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-29 21:07:58,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:07:58,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-08-29 21:07:59,059 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:07:59,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 71 treesize of output 71 [2023-08-29 21:07:59,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 110 [2023-08-29 21:07:59,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 118 [2023-08-29 21:08:01,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:08:01,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:08:01,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:08:01,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052894149] [2023-08-29 21:08:01,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052894149] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:08:01,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:08:01,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-29 21:08:01,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339153093] [2023-08-29 21:08:01,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:08:01,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 21:08:01,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:08:01,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 21:08:01,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-08-29 21:08:03,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 21:08:05,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 21:08:09,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 21:08:22,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 463 [2023-08-29 21:08:22,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 155 transitions, 2010 flow. Second operand has 12 states, 12 states have (on average 175.75) internal successors, (2109), 12 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:08:22,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:08:22,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 463 [2023-08-29 21:08:22,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:08:31,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 21:08:31,868 INFO L130 PetriNetUnfolder]: 267/841 cut-off events. [2023-08-29 21:08:31,868 INFO L131 PetriNetUnfolder]: For 5594/5594 co-relation queries the response was YES. [2023-08-29 21:08:31,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4242 conditions, 841 events. 267/841 cut-off events. For 5594/5594 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5761 event pairs, 32 based on Foata normal form. 2/843 useless extension candidates. Maximal degree in co-relation 4192. Up to 225 conditions per place. [2023-08-29 21:08:31,873 INFO L137 encePairwiseOnDemand]: 450/463 looper letters, 96 selfloop transitions, 89 changer transitions 0/187 dead transitions. [2023-08-29 21:08:31,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 187 transitions, 2525 flow [2023-08-29 21:08:31,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 21:08:31,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 21:08:31,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2346 transitions. [2023-08-29 21:08:31,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38976574181757767 [2023-08-29 21:08:31,879 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2346 transitions. [2023-08-29 21:08:31,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2346 transitions. [2023-08-29 21:08:31,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:08:31,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2346 transitions. [2023-08-29 21:08:31,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 180.46153846153845) internal successors, (2346), 13 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:08:31,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 463.0) internal successors, (6482), 14 states have internal predecessors, (6482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:08:31,886 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 463.0) internal successors, (6482), 14 states have internal predecessors, (6482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:08:31,887 INFO L175 Difference]: Start difference. First operand has 156 places, 155 transitions, 2010 flow. Second operand 13 states and 2346 transitions. [2023-08-29 21:08:31,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 187 transitions, 2525 flow [2023-08-29 21:08:31,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 187 transitions, 2385 flow, removed 14 selfloop flow, removed 8 redundant places. [2023-08-29 21:08:31,914 INFO L231 Difference]: Finished difference. Result has 161 places, 154 transitions, 2063 flow [2023-08-29 21:08:31,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2063, PETRI_PLACES=161, PETRI_TRANSITIONS=154} [2023-08-29 21:08:31,915 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 75 predicate places. [2023-08-29 21:08:31,915 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 154 transitions, 2063 flow [2023-08-29 21:08:31,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 175.75) internal successors, (2109), 12 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:08:31,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:08:31,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:08:31,932 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 (37)] Forceful destruction successful, exit code 0 [2023-08-29 21:08:32,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:32,129 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:08:32,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:08:32,130 INFO L85 PathProgramCache]: Analyzing trace with hash -267465394, now seen corresponding path program 11 times [2023-08-29 21:08:32,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:08:32,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542665956] [2023-08-29 21:08:32,130 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 21:08:32,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:32,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:08:32,131 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:08:32,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-08-29 21:08:32,704 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 21:08:32,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:08:32,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 62 conjunts are in the unsatisfiable core [2023-08-29 21:08:32,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:08:32,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-29 21:08:32,762 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:08:32,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 55 [2023-08-29 21:08:32,800 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-29 21:08:32,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-29 21:08:32,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-29 21:08:33,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2023-08-29 21:08:33,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:08:33,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:08:33,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:08:33,180 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:08:33,180 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:08:33,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 65 [2023-08-29 21:08:33,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-29 21:08:33,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 58 [2023-08-29 21:08:33,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:08:33,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:08:33,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:08:33,441 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:08:33,442 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:08:33,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 209 [2023-08-29 21:08:33,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:08:33,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:08:33,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:08:33,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542665956] [2023-08-29 21:08:33,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542665956] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:08:33,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:08:33,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 21:08:33,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644853458] [2023-08-29 21:08:33,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:08:33,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 21:08:33,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:08:33,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 21:08:33,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-08-29 21:08:36,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 463 [2023-08-29 21:08:36,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 154 transitions, 2063 flow. Second operand has 10 states, 10 states have (on average 181.1) internal successors, (1811), 10 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:08:36,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:08:36,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 463 [2023-08-29 21:08:36,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:08:42,168 INFO L130 PetriNetUnfolder]: 271/867 cut-off events. [2023-08-29 21:08:42,168 INFO L131 PetriNetUnfolder]: For 6031/6031 co-relation queries the response was YES. [2023-08-29 21:08:42,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4438 conditions, 867 events. 271/867 cut-off events. For 6031/6031 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5999 event pairs, 167 based on Foata normal form. 2/869 useless extension candidates. Maximal degree in co-relation 4387. Up to 723 conditions per place. [2023-08-29 21:08:42,172 INFO L137 encePairwiseOnDemand]: 451/463 looper letters, 151 selfloop transitions, 27 changer transitions 0/180 dead transitions. [2023-08-29 21:08:42,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 180 transitions, 2586 flow [2023-08-29 21:08:42,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 21:08:42,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 21:08:42,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2219 transitions. [2023-08-29 21:08:42,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993880489560835 [2023-08-29 21:08:42,175 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2219 transitions. [2023-08-29 21:08:42,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2219 transitions. [2023-08-29 21:08:42,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:08:42,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2219 transitions. [2023-08-29 21:08:42,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 184.91666666666666) internal successors, (2219), 12 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:08:42,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 463.0) internal successors, (6019), 13 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:08:42,180 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 463.0) internal successors, (6019), 13 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:08:42,180 INFO L175 Difference]: Start difference. First operand has 161 places, 154 transitions, 2063 flow. Second operand 12 states and 2219 transitions. [2023-08-29 21:08:42,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 180 transitions, 2586 flow [2023-08-29 21:08:42,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 180 transitions, 2405 flow, removed 7 selfloop flow, removed 13 redundant places. [2023-08-29 21:08:42,202 INFO L231 Difference]: Finished difference. Result has 160 places, 156 transitions, 1994 flow [2023-08-29 21:08:42,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=1882, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1994, PETRI_PLACES=160, PETRI_TRANSITIONS=156} [2023-08-29 21:08:42,202 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 74 predicate places. [2023-08-29 21:08:42,203 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 156 transitions, 1994 flow [2023-08-29 21:08:42,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.1) internal successors, (1811), 10 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:08:42,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:08:42,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:08:42,216 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 (38)] Ended with exit code 0 [2023-08-29 21:08:42,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:42,404 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:08:42,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:08:42,404 INFO L85 PathProgramCache]: Analyzing trace with hash -468889510, now seen corresponding path program 12 times [2023-08-29 21:08:42,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:08:42,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851298810] [2023-08-29 21:08:42,405 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 21:08:42,405 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:08:42,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:08:42,406 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:08:42,409 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 (39)] Waiting until timeout for monitored process [2023-08-29 21:08:42,936 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-29 21:08:42,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:08:42,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 65 conjunts are in the unsatisfiable core [2023-08-29 21:08:42,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:08:42,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-29 21:08:43,005 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:08:43,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 55 [2023-08-29 21:08:43,053 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-29 21:08:43,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-29 21:08:43,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-29 21:08:43,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:08:43,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-08-29 21:08:43,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:08:43,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:08:43,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:08:43,627 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:08:43,628 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:08:43,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-29 21:08:43,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-29 21:08:43,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 58 [2023-08-29 21:08:43,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:08:43,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:08:43,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:08:43,926 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:08:43,926 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:08:43,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 209 [2023-08-29 21:08:44,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:08:44,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:08:44,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:08:44,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851298810] [2023-08-29 21:08:44,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851298810] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:08:44,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:08:44,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-29 21:08:44,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562797947] [2023-08-29 21:08:44,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:08:44,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-29 21:08:44,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:08:44,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-29 21:08:44,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-08-29 21:08:48,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 463 [2023-08-29 21:08:48,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 156 transitions, 1994 flow. Second operand has 11 states, 11 states have (on average 179.9090909090909) internal successors, (1979), 11 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:08:48,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:08:48,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 463 [2023-08-29 21:08:48,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15