./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 03:21:10,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:21:10,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:21:10,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:21:10,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:21:10,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:21:10,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:21:10,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:21:10,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:21:10,784 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:21:10,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:21:10,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:21:10,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:21:10,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:21:10,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:21:10,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:21:10,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:21:10,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:21:10,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:21:10,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:21:10,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:21:10,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:21:10,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:21:10,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:21:10,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:21:10,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:21:10,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:21:10,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:21:10,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:21:10,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:21:10,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:21:10,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:21:10,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:21:10,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:21:10,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:21:10,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:21:10,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:21:10,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:21:10,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:21:10,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:21:10,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:21:10,841 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 03:21:10,876 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:21:10,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:21:10,877 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:21:10,877 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:21:10,878 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:21:10,879 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:21:10,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:21:10,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:21:10,879 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:21:10,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:21:10,881 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:21:10,881 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:21:10,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:21:10,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:21:10,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:21:10,882 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:21:10,882 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:21:10,882 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:21:10,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:21:10,882 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:21:10,882 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:21:10,883 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:21:10,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:21:10,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:21:10,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:21:10,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:21:10,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:21:10,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:21:10,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 03:21:10,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 03:21:10,884 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:21:10,885 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:21:10,885 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:21:10,885 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:21:10,885 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:21:11,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:21:11,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:21:11,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:21:11,192 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:21:11,193 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:21:11,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-08-30 03:21:12,474 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:21:12,817 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:21:12,818 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-08-30 03:21:12,839 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c9210464/b3a727affb2848b78d367f2ad27eac6d/FLAG8645a0120 [2023-08-30 03:21:12,855 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c9210464/b3a727affb2848b78d367f2ad27eac6d [2023-08-30 03:21:12,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:21:12,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:21:12,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:21:12,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:21:12,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:21:12,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:21:12" (1/1) ... [2023-08-30 03:21:12,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e9f0bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:12, skipping insertion in model container [2023-08-30 03:21:12,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:21:12" (1/1) ... [2023-08-30 03:21:12,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:21:12,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:21:13,476 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2023-08-30 03:21:13,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:21:13,528 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-08-30 03:21:13,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5d711a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:13, skipping insertion in model container [2023-08-30 03:21:13,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:21:13,529 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-30 03:21:13,530 INFO L158 Benchmark]: Toolchain (without parser) took 671.30ms. Allocated memory is still 77.6MB. Free memory was 52.7MB in the beginning and 53.5MB in the end (delta: -886.9kB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2023-08-30 03:21:13,531 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory is still 36.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 03:21:13,531 INFO L158 Benchmark]: CACSL2BoogieTranslator took 669.52ms. Allocated memory is still 77.6MB. Free memory was 52.5MB in the beginning and 53.5MB in the end (delta: -1.1MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2023-08-30 03:21:13,532 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory is still 36.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 669.52ms. Allocated memory is still 77.6MB. Free memory was 52.5MB in the beginning and 53.5MB in the end (delta: -1.1MB). Peak memory consumption was 20.4MB. 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-2_1-container_of.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 03:21:15,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:21:15,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:21:15,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:21:15,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:21:15,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:21:15,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:21:15,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:21:15,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:21:15,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:21:15,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:21:15,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:21:15,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:21:15,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:21:15,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:21:15,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:21:15,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:21:15,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:21:15,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:21:15,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:21:15,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:21:15,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:21:15,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:21:15,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:21:15,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:21:15,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:21:15,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:21:15,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:21:15,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:21:15,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:21:15,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:21:15,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:21:15,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:21:15,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:21:15,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:21:15,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:21:15,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:21:15,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:21:15,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:21:15,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:21:15,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:21:15,367 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 03:21:15,402 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:21:15,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:21:15,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:21:15,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:21:15,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:21:15,406 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:21:15,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:21:15,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:21:15,407 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:21:15,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:21:15,408 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:21:15,408 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:21:15,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:21:15,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:21:15,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:21:15,409 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:21:15,409 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:21:15,409 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:21:15,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:21:15,409 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:21:15,409 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 03:21:15,410 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 03:21:15,410 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:21:15,410 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:21:15,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:21:15,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:21:15,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:21:15,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:21:15,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:21:15,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:21:15,412 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 03:21:15,412 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 03:21:15,412 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:21:15,412 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:21:15,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:21:15,413 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 03:21:15,413 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:21:15,413 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:21:15,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:21:15,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:21:15,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:21:15,780 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:21:15,780 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:21:15,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-08-30 03:21:17,043 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:21:17,349 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:21:17,349 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-08-30 03:21:17,371 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c311513cc/93d51641e2684573a622edea5f122af0/FLAGa4380de34 [2023-08-30 03:21:17,385 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c311513cc/93d51641e2684573a622edea5f122af0 [2023-08-30 03:21:17,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:21:17,388 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:21:17,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:21:17,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:21:17,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:21:17,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:21:17" (1/1) ... [2023-08-30 03:21:17,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e70e0a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:17, skipping insertion in model container [2023-08-30 03:21:17,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:21:17" (1/1) ... [2023-08-30 03:21:17,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:21:17,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:21:17,998 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2023-08-30 03:21:18,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:21:18,065 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-30 03:21:18,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:21:18,116 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2023-08-30 03:21:18,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:21:18,141 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 03:21:18,182 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2023-08-30 03:21:18,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:21:18,338 INFO L208 MainTranslator]: Completed translation [2023-08-30 03:21:18,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18 WrapperNode [2023-08-30 03:21:18,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:21:18,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 03:21:18,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 03:21:18,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 03:21:18,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (1/1) ... [2023-08-30 03:21:18,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (1/1) ... [2023-08-30 03:21:18,431 INFO L138 Inliner]: procedures = 486, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 132 [2023-08-30 03:21:18,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 03:21:18,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 03:21:18,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 03:21:18,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 03:21:18,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (1/1) ... [2023-08-30 03:21:18,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (1/1) ... [2023-08-30 03:21:18,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (1/1) ... [2023-08-30 03:21:18,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (1/1) ... [2023-08-30 03:21:18,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (1/1) ... [2023-08-30 03:21:18,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (1/1) ... [2023-08-30 03:21:18,468 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (1/1) ... [2023-08-30 03:21:18,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (1/1) ... [2023-08-30 03:21:18,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 03:21:18,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 03:21:18,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 03:21:18,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 03:21:18,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (1/1) ... [2023-08-30 03:21:18,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:21:18,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 03:21:18,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 03:21:18,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 03:21:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 03:21:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 03:21:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-30 03:21:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 03:21:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 03:21:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 03:21:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 03:21:18,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 03:21:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 03:21:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-30 03:21:18,551 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-30 03:21:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 03:21:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 03:21:18,552 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 03:21:18,878 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 03:21:18,880 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 03:21:19,396 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 03:21:19,403 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 03:21:19,403 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 03:21:19,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:21:19 BoogieIcfgContainer [2023-08-30 03:21:19,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 03:21:19,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 03:21:19,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 03:21:19,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 03:21:19,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:21:17" (1/3) ... [2023-08-30 03:21:19,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30dcf7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:21:19, skipping insertion in model container [2023-08-30 03:21:19,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:21:18" (2/3) ... [2023-08-30 03:21:19,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30dcf7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:21:19, skipping insertion in model container [2023-08-30 03:21:19,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:21:19" (3/3) ... [2023-08-30 03:21:19,418 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2023-08-30 03:21:19,433 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 03:21:19,433 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2023-08-30 03:21:19,433 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 03:21:19,537 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 03:21:19,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 221 transitions, 458 flow [2023-08-30 03:21:19,700 INFO L130 PetriNetUnfolder]: 10/271 cut-off events. [2023-08-30 03:21:19,701 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 03:21:19,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 271 events. 10/271 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 685 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 155. Up to 4 conditions per place. [2023-08-30 03:21:19,711 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 221 transitions, 458 flow [2023-08-30 03:21:19,717 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 219 transitions, 450 flow [2023-08-30 03:21:19,720 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 03:21:19,728 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 219 transitions, 450 flow [2023-08-30 03:21:19,730 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 219 transitions, 450 flow [2023-08-30 03:21:19,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 219 transitions, 450 flow [2023-08-30 03:21:19,774 INFO L130 PetriNetUnfolder]: 10/271 cut-off events. [2023-08-30 03:21:19,774 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 03:21:19,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 271 events. 10/271 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 685 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 155. Up to 4 conditions per place. [2023-08-30 03:21:19,778 INFO L119 LiptonReduction]: Number of co-enabled transitions 5880 [2023-08-30 03:22:02,562 WARN L222 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 147 DAG size of output: 139 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:22:24,870 WARN L222 SmtUtils]: Spent 11.11s on a formula simplification that was a NOOP. DAG size: 216 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:22:35,787 WARN L222 SmtUtils]: Spent 10.92s on a formula simplification that was a NOOP. DAG size: 216 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:22:45,545 WARN L222 SmtUtils]: Spent 9.76s on a formula simplification that was a NOOP. DAG size: 216 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:22:55,080 WARN L222 SmtUtils]: Spent 9.53s on a formula simplification that was a NOOP. DAG size: 216 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:23:17,253 WARN L222 SmtUtils]: Spent 18.81s on a formula simplification. DAG size of input: 248 DAG size of output: 231 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:23:25,924 WARN L222 SmtUtils]: Spent 8.67s 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) [2023-08-30 03:23:49,852 WARN L222 SmtUtils]: Spent 23.92s on a formula simplification. DAG size of input: 254 DAG size of output: 243 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:24:02,255 WARN L222 SmtUtils]: Spent 12.40s on a formula simplification that was a NOOP. DAG size: 226 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:25:55,331 WARN L222 SmtUtils]: Spent 1.88m on a formula simplification. DAG size of input: 293 DAG size of output: 272 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:26:50,522 WARN L222 SmtUtils]: Spent 55.19s on a formula simplification that was a NOOP. DAG size: 259 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:28:51,587 WARN L222 SmtUtils]: Spent 2.02m on a formula simplification. DAG size of input: 299 DAG size of output: 278 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:30:08,642 WARN L222 SmtUtils]: Spent 1.28m on a formula simplification that was a NOOP. DAG size: 265 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:30:08,961 INFO L134 LiptonReduction]: Checked pairs total: 22744 [2023-08-30 03:30:08,961 INFO L136 LiptonReduction]: Total number of compositions: 254 [2023-08-30 03:30:08,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 03:30:08,976 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;@743bfaad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 03:30:08,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-08-30 03:30:08,978 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 03:30:08,978 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:30:08,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:30:08,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 03:30:08,979 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:30:08,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:30:08,983 INFO L85 PathProgramCache]: Analyzing trace with hash 763, now seen corresponding path program 1 times [2023-08-30 03:30:09,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:30:09,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [937122920] [2023-08-30 03:30:09,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:30:09,001 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:09,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:30:09,002 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:30:09,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-30 03:30:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:30:09,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-30 03:30:09,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:30:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:30:09,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:30:09,129 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:30:09,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [937122920] [2023-08-30 03:30:09,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [937122920] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:30:09,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:30:09,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 03:30:09,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656397366] [2023-08-30 03:30:09,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:30:09,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 03:30:09,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:30:09,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 03:30:09,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 03:30:09,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 475 [2023-08-30 03:30:09,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 180 flow. Second operand has 2 states, 2 states have (on average 205.5) internal successors, (411), 2 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:09,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:30:09,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 475 [2023-08-30 03:30:09,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:30:10,466 INFO L130 PetriNetUnfolder]: 778/2031 cut-off events. [2023-08-30 03:30:10,466 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-30 03:30:10,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3381 conditions, 2031 events. 778/2031 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 16970 event pairs, 777 based on Foata normal form. 0/1175 useless extension candidates. Maximal degree in co-relation 3235. Up to 1326 conditions per place. [2023-08-30 03:30:10,486 INFO L137 encePairwiseOnDemand]: 457/475 looper letters, 44 selfloop transitions, 0 changer transitions 0/66 dead transitions. [2023-08-30 03:30:10,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 232 flow [2023-08-30 03:30:10,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 03:30:10,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 03:30:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 472 transitions. [2023-08-30 03:30:10,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968421052631579 [2023-08-30 03:30:10,511 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 472 transitions. [2023-08-30 03:30:10,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 472 transitions. [2023-08-30 03:30:10,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:30:10,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 472 transitions. [2023-08-30 03:30:10,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 236.0) internal successors, (472), 2 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:10,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 475.0) internal successors, (1425), 3 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:10,531 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 475.0) internal successors, (1425), 3 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:10,537 INFO L175 Difference]: Start difference. First operand has 86 places, 84 transitions, 180 flow. Second operand 2 states and 472 transitions. [2023-08-30 03:30:10,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 232 flow [2023-08-30 03:30:10,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 66 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 03:30:10,545 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 136 flow [2023-08-30 03:30:10,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, 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} [2023-08-30 03:30:10,550 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -18 predicate places. [2023-08-30 03:30:10,550 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 136 flow [2023-08-30 03:30:10,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 205.5) internal successors, (411), 2 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:10,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:30:10,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 03:30:10,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-08-30 03:30:10,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:10,763 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:30:10,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:30:10,764 INFO L85 PathProgramCache]: Analyzing trace with hash 24726, now seen corresponding path program 1 times [2023-08-30 03:30:10,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:30:10,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417839206] [2023-08-30 03:30:10,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:30:10,765 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:10,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:30:10,767 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:30:10,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-30 03:30:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:30:10,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 03:30:10,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:30:10,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:30:10,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:30:10,939 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:30:10,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417839206] [2023-08-30 03:30:10,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417839206] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:30:10,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:30:10,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:30:10,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241522119] [2023-08-30 03:30:10,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:30:10,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:30:10,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:30:10,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:30:10,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:30:10,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 475 [2023-08-30 03:30:10,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:10,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:30:10,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 475 [2023-08-30 03:30:10,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:30:12,266 INFO L130 PetriNetUnfolder]: 777/1572 cut-off events. [2023-08-30 03:30:12,266 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 03:30:12,268 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 123. Compared 9986 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. [2023-08-30 03:30:12,274 INFO L137 encePairwiseOnDemand]: 471/475 looper letters, 54 selfloop transitions, 1 changer transitions 1/78 dead transitions. [2023-08-30 03:30:12,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 78 transitions, 272 flow [2023-08-30 03:30:12,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:30:12,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:30:12,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 662 transitions. [2023-08-30 03:30:12,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46456140350877195 [2023-08-30 03:30:12,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 662 transitions. [2023-08-30 03:30:12,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 662 transitions. [2023-08-30 03:30:12,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:30:12,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 662 transitions. [2023-08-30 03:30:12,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:12,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:12,286 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:12,286 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 136 flow. Second operand 3 states and 662 transitions. [2023-08-30 03:30:12,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 78 transitions, 272 flow [2023-08-30 03:30:12,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 78 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 03:30:12,289 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 145 flow [2023-08-30 03:30:12,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, 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} [2023-08-30 03:30:12,290 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -15 predicate places. [2023-08-30 03:30:12,290 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 145 flow [2023-08-30 03:30:12,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:12,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:30:12,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:30:12,307 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 [2023-08-30 03:30:12,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:12,503 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:30:12,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:30:12,505 INFO L85 PathProgramCache]: Analyzing trace with hash 763231, now seen corresponding path program 1 times [2023-08-30 03:30:12,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:30:12,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625454861] [2023-08-30 03:30:12,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:30:12,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:12,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:30:12,511 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:30:12,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-30 03:30:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:30:12,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 03:30:12,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:30:12,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 03:30:12,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:30:12,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:30:12,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:30:12,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625454861] [2023-08-30 03:30:12,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625454861] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:30:12,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:30:12,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:30:12,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234512633] [2023-08-30 03:30:12,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:30:12,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:30:12,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:30:12,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:30:12,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:30:13,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 475 [2023-08-30 03:30:13,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:13,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:30:13,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 475 [2023-08-30 03:30:13,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:30:14,196 INFO L130 PetriNetUnfolder]: 777/1904 cut-off events. [2023-08-30 03:30:14,197 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-30 03:30:14,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3335 conditions, 1904 events. 777/1904 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 14683 event pairs, 687 based on Foata normal form. 0/1160 useless extension candidates. Maximal degree in co-relation 3330. Up to 1181 conditions per place. [2023-08-30 03:30:14,206 INFO L137 encePairwiseOnDemand]: 468/475 looper letters, 48 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2023-08-30 03:30:14,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 73 transitions, 265 flow [2023-08-30 03:30:14,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:30:14,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:30:14,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2023-08-30 03:30:14,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4343859649122807 [2023-08-30 03:30:14,211 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2023-08-30 03:30:14,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2023-08-30 03:30:14,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:30:14,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2023-08-30 03:30:14,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:14,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:14,220 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:14,220 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 145 flow. Second operand 3 states and 619 transitions. [2023-08-30 03:30:14,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 73 transitions, 265 flow [2023-08-30 03:30:14,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:30:14,224 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 150 flow [2023-08-30 03:30:14,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2023-08-30 03:30:14,226 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -16 predicate places. [2023-08-30 03:30:14,226 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 150 flow [2023-08-30 03:30:14,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:14,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:30:14,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:30:14,247 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 (4)] Forceful destruction successful, exit code 0 [2023-08-30 03:30:14,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:14,448 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:30:14,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:30:14,448 INFO L85 PathProgramCache]: Analyzing trace with hash 763232, now seen corresponding path program 1 times [2023-08-30 03:30:14,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:30:14,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189757095] [2023-08-30 03:30:14,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:30:14,450 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:14,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:30:14,451 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:30:14,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-30 03:30:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:30:14,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 03:30:14,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:30:14,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 03:30:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:30:14,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:30:14,607 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:30:14,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189757095] [2023-08-30 03:30:14,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189757095] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:30:14,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:30:14,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:30:14,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639548691] [2023-08-30 03:30:14,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:30:14,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:30:14,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:30:14,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:30:14,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:30:14,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 475 [2023-08-30 03:30:14,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:14,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:30:14,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 475 [2023-08-30 03:30:14,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:30:16,192 INFO L130 PetriNetUnfolder]: 597/1426 cut-off events. [2023-08-30 03:30:16,192 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-30 03:30:16,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2595 conditions, 1426 events. 597/1426 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10140 event pairs, 357 based on Foata normal form. 29/963 useless extension candidates. Maximal degree in co-relation 2590. Up to 617 conditions per place. [2023-08-30 03:30:16,198 INFO L137 encePairwiseOnDemand]: 465/475 looper letters, 53 selfloop transitions, 6 changer transitions 0/79 dead transitions. [2023-08-30 03:30:16,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 79 transitions, 300 flow [2023-08-30 03:30:16,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:30:16,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:30:16,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 648 transitions. [2023-08-30 03:30:16,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45473684210526316 [2023-08-30 03:30:16,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 648 transitions. [2023-08-30 03:30:16,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 648 transitions. [2023-08-30 03:30:16,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:30:16,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 648 transitions. [2023-08-30 03:30:16,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:16,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:16,207 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:16,207 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 150 flow. Second operand 3 states and 648 transitions. [2023-08-30 03:30:16,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 79 transitions, 300 flow [2023-08-30 03:30:16,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 79 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:30:16,210 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 170 flow [2023-08-30 03:30:16,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2023-08-30 03:30:16,211 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -15 predicate places. [2023-08-30 03:30:16,211 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 170 flow [2023-08-30 03:30:16,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:16,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:30:16,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:30:16,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-30 03:30:16,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:16,424 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:30:16,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:30:16,425 INFO L85 PathProgramCache]: Analyzing trace with hash 763667, now seen corresponding path program 1 times [2023-08-30 03:30:16,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:30:16,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697202249] [2023-08-30 03:30:16,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:30:16,426 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:16,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:30:16,427 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:30:16,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-30 03:30:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:30:16,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 03:30:16,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:30:16,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:30:16,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 03:30:16,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:30:16,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:30:16,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:30:16,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697202249] [2023-08-30 03:30:16,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697202249] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:30:16,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:30:16,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:30:16,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229005410] [2023-08-30 03:30:16,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:30:16,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:30:16,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:30:16,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:30:16,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:30:17,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 475 [2023-08-30 03:30:17,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 170 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) [2023-08-30 03:30:17,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:30:17,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 475 [2023-08-30 03:30:17,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:30:17,924 INFO L130 PetriNetUnfolder]: 588/1384 cut-off events. [2023-08-30 03:30:17,924 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-08-30 03:30:17,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2732 conditions, 1384 events. 588/1384 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9690 event pairs, 588 based on Foata normal form. 0/903 useless extension candidates. Maximal degree in co-relation 2726. Up to 1016 conditions per place. [2023-08-30 03:30:17,931 INFO L137 encePairwiseOnDemand]: 471/475 looper letters, 40 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-08-30 03:30:17,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 63 transitions, 250 flow [2023-08-30 03:30:17,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:30:17,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:30:17,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 649 transitions. [2023-08-30 03:30:17,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4554385964912281 [2023-08-30 03:30:17,936 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 649 transitions. [2023-08-30 03:30:17,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 649 transitions. [2023-08-30 03:30:17,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:30:17,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 649 transitions. [2023-08-30 03:30:17,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:17,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:17,941 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:17,941 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 170 flow. Second operand 3 states and 649 transitions. [2023-08-30 03:30:17,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 63 transitions, 250 flow [2023-08-30 03:30:17,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 63 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:30:17,946 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 164 flow [2023-08-30 03:30:17,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2023-08-30 03:30:17,947 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -16 predicate places. [2023-08-30 03:30:17,947 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 164 flow [2023-08-30 03:30:17,947 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) [2023-08-30 03:30:17,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:30:17,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:30:17,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-30 03:30:18,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:18,161 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:30:18,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:30:18,162 INFO L85 PathProgramCache]: Analyzing trace with hash 763666, now seen corresponding path program 1 times [2023-08-30 03:30:18,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:30:18,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013160578] [2023-08-30 03:30:18,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:30:18,162 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:18,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:30:18,163 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:30:18,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-30 03:30:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:30:18,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 03:30:18,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:30:18,378 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-30 03:30:18,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-08-30 03:30:18,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:30:18,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:30:18,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:30:18,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013160578] [2023-08-30 03:30:18,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013160578] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:30:18,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:30:18,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:30:18,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199616132] [2023-08-30 03:30:18,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:30:18,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:30:18,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:30:18,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:30:18,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:30:18,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 475 [2023-08-30 03:30:18,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 164 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) [2023-08-30 03:30:18,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:30:18,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 475 [2023-08-30 03:30:18,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:30:19,965 INFO L130 PetriNetUnfolder]: 579/1366 cut-off events. [2023-08-30 03:30:19,965 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-08-30 03:30:19,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2583 conditions, 1366 events. 579/1366 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9570 event pairs, 489 based on Foata normal form. 0/899 useless extension candidates. Maximal degree in co-relation 2577. Up to 832 conditions per place. [2023-08-30 03:30:19,972 INFO L137 encePairwiseOnDemand]: 464/475 looper letters, 45 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2023-08-30 03:30:19,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 75 transitions, 296 flow [2023-08-30 03:30:19,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:30:19,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:30:19,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 659 transitions. [2023-08-30 03:30:19,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624561403508772 [2023-08-30 03:30:19,976 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 659 transitions. [2023-08-30 03:30:19,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 659 transitions. [2023-08-30 03:30:19,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:30:19,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 659 transitions. [2023-08-30 03:30:19,978 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) [2023-08-30 03:30:19,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:19,982 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:19,982 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 164 flow. Second operand 3 states and 659 transitions. [2023-08-30 03:30:19,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 75 transitions, 296 flow [2023-08-30 03:30:19,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 75 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:30:19,985 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 176 flow [2023-08-30 03:30:19,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2023-08-30 03:30:19,986 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -17 predicate places. [2023-08-30 03:30:19,986 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 176 flow [2023-08-30 03:30:19,986 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) [2023-08-30 03:30:19,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:30:19,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:30:20,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-08-30 03:30:20,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:20,200 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)] === [2023-08-30 03:30:20,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:30:20,200 INFO L85 PathProgramCache]: Analyzing trace with hash 23674839, now seen corresponding path program 1 times [2023-08-30 03:30:20,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:30:20,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604616156] [2023-08-30 03:30:20,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:30:20,201 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:20,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:30:20,204 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:30:20,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-08-30 03:30:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:30:20,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 03:30:20,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:30:20,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 03:30:20,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:30:20,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:30:20,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:30:20,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604616156] [2023-08-30 03:30:20,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604616156] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:30:20,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:30:20,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:30:20,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760876019] [2023-08-30 03:30:20,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:30:20,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:30:20,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:30:20,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:30:20,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:30:21,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 475 [2023-08-30 03:30:21,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 197.8) internal successors, (989), 5 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:21,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:30:21,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 475 [2023-08-30 03:30:21,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:30:23,865 INFO L130 PetriNetUnfolder]: 517/1104 cut-off events. [2023-08-30 03:30:23,866 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2023-08-30 03:30:23,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2245 conditions, 1104 events. 517/1104 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7289 event pairs, 27 based on Foata normal form. 42/893 useless extension candidates. Maximal degree in co-relation 2239. Up to 550 conditions per place. [2023-08-30 03:30:23,872 INFO L137 encePairwiseOnDemand]: 465/475 looper letters, 69 selfloop transitions, 10 changer transitions 2/100 dead transitions. [2023-08-30 03:30:23,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 100 transitions, 437 flow [2023-08-30 03:30:23,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:30:23,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:30:23,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1069 transitions. [2023-08-30 03:30:23,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45010526315789473 [2023-08-30 03:30:23,878 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1069 transitions. [2023-08-30 03:30:23,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1069 transitions. [2023-08-30 03:30:23,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:30:23,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1069 transitions. [2023-08-30 03:30:23,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 213.8) internal successors, (1069), 5 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:23,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 475.0) internal successors, (2850), 6 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:23,893 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 475.0) internal successors, (2850), 6 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:23,893 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 176 flow. Second operand 5 states and 1069 transitions. [2023-08-30 03:30:23,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 100 transitions, 437 flow [2023-08-30 03:30:23,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 100 transitions, 415 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:30:23,899 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 215 flow [2023-08-30 03:30:23,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=158, 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=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=215, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2023-08-30 03:30:23,899 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -13 predicate places. [2023-08-30 03:30:23,900 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 215 flow [2023-08-30 03:30:23,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 197.8) internal successors, (989), 5 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:23,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:30:23,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:30:23,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-08-30 03:30:24,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:24,113 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)] === [2023-08-30 03:30:24,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:30:24,113 INFO L85 PathProgramCache]: Analyzing trace with hash 23674838, now seen corresponding path program 1 times [2023-08-30 03:30:24,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:30:24,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016427548] [2023-08-30 03:30:24,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:30:24,114 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:24,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:30:24,115 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:30:24,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-08-30 03:30:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:30:24,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 03:30:24,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:30:24,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 03:30:24,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:30:24,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:30:24,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:30:24,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016427548] [2023-08-30 03:30:24,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016427548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:30:24,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:30:24,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:30:24,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910097419] [2023-08-30 03:30:24,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:30:24,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:30:24,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:30:24,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:30:24,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:30:24,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 475 [2023-08-30 03:30:24,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 193.8) internal successors, (969), 5 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:24,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:30:24,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 475 [2023-08-30 03:30:24,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:30:28,000 INFO L130 PetriNetUnfolder]: 561/1093 cut-off events. [2023-08-30 03:30:28,000 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-30 03:30:28,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2558 conditions, 1093 events. 561/1093 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6467 event pairs, 90 based on Foata normal form. 0/937 useless extension candidates. Maximal degree in co-relation 2550. Up to 648 conditions per place. [2023-08-30 03:30:28,007 INFO L137 encePairwiseOnDemand]: 458/475 looper letters, 70 selfloop transitions, 17 changer transitions 0/105 dead transitions. [2023-08-30 03:30:28,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 105 transitions, 478 flow [2023-08-30 03:30:28,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:30:28,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:30:28,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1249 transitions. [2023-08-30 03:30:28,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382456140350877 [2023-08-30 03:30:28,013 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1249 transitions. [2023-08-30 03:30:28,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1249 transitions. [2023-08-30 03:30:28,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:30:28,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1249 transitions. [2023-08-30 03:30:28,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.16666666666666) internal successors, (1249), 6 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:28,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:28,020 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:28,020 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 215 flow. Second operand 6 states and 1249 transitions. [2023-08-30 03:30:28,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 105 transitions, 478 flow [2023-08-30 03:30:28,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 105 transitions, 454 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-30 03:30:28,024 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 293 flow [2023-08-30 03:30:28,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=293, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2023-08-30 03:30:28,025 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -7 predicate places. [2023-08-30 03:30:28,025 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 293 flow [2023-08-30 03:30:28,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 193.8) internal successors, (969), 5 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:28,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:30:28,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 03:30:28,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-08-30 03:30:28,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:28,238 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)] === [2023-08-30 03:30:28,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:30:28,239 INFO L85 PathProgramCache]: Analyzing trace with hash 733475908, now seen corresponding path program 1 times [2023-08-30 03:30:28,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:30:28,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560384022] [2023-08-30 03:30:28,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:30:28,240 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:28,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:30:28,241 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:30:28,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-08-30 03:30:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:30:28,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 03:30:28,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:30:28,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 45 [2023-08-30 03:30:28,527 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 03:30:28,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 93 [2023-08-30 03:30:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:30:28,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:30:28,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:30:28,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560384022] [2023-08-30 03:30:28,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560384022] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:30:28,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:30:28,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:30:28,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91346774] [2023-08-30 03:30:28,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:30:28,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:30:28,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:30:28,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:30:28,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:30:29,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 475 [2023-08-30 03:30:29,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 293 flow. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:29,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:30:29,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 475 [2023-08-30 03:30:29,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:30:31,229 INFO L130 PetriNetUnfolder]: 713/1567 cut-off events. [2023-08-30 03:30:31,229 INFO L131 PetriNetUnfolder]: For 1188/1273 co-relation queries the response was YES. [2023-08-30 03:30:31,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3721 conditions, 1567 events. 713/1567 cut-off events. For 1188/1273 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10732 event pairs, 426 based on Foata normal form. 7/1283 useless extension candidates. Maximal degree in co-relation 3711. Up to 1022 conditions per place. [2023-08-30 03:30:31,235 INFO L137 encePairwiseOnDemand]: 466/475 looper letters, 52 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2023-08-30 03:30:31,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 84 transitions, 469 flow [2023-08-30 03:30:31,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:30:31,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:30:31,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 626 transitions. [2023-08-30 03:30:31,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392982456140351 [2023-08-30 03:30:31,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 626 transitions. [2023-08-30 03:30:31,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 626 transitions. [2023-08-30 03:30:31,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:30:31,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 626 transitions. [2023-08-30 03:30:31,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:31,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:31,245 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:31,245 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 293 flow. Second operand 3 states and 626 transitions. [2023-08-30 03:30:31,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 84 transitions, 469 flow [2023-08-30 03:30:31,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 84 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:30:31,248 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 379 flow [2023-08-30 03:30:31,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=78, 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=379, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2023-08-30 03:30:31,249 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2023-08-30 03:30:31,249 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 379 flow [2023-08-30 03:30:31,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:31,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:30:31,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:30:31,262 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 (10)] Ended with exit code 0 [2023-08-30 03:30:31,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:31,461 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)] === [2023-08-30 03:30:31,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:30:31,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1262917302, now seen corresponding path program 1 times [2023-08-30 03:30:31,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:30:31,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308503256] [2023-08-30 03:30:31,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:30:31,462 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:31,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:30:31,463 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:30:31,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-08-30 03:30:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:30:31,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 03:30:31,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:30:31,701 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:30:31,701 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:30:31,702 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:30:31,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2023-08-30 03:30:31,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:30:31,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:30:31,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:30:31,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308503256] [2023-08-30 03:30:31,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308503256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:30:31,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:30:31,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:30:31,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194868898] [2023-08-30 03:30:31,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:30:31,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:30:31,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:30:31,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:30:31,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:30:32,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 475 [2023-08-30 03:30:32,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:32,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:30:32,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 475 [2023-08-30 03:30:32,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:30:34,160 INFO L130 PetriNetUnfolder]: 910/1868 cut-off events. [2023-08-30 03:30:34,161 INFO L131 PetriNetUnfolder]: For 2362/2483 co-relation queries the response was YES. [2023-08-30 03:30:34,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5433 conditions, 1868 events. 910/1868 cut-off events. For 2362/2483 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12422 event pairs, 501 based on Foata normal form. 7/1606 useless extension candidates. Maximal degree in co-relation 5421. Up to 1261 conditions per place. [2023-08-30 03:30:34,175 INFO L137 encePairwiseOnDemand]: 466/475 looper letters, 58 selfloop transitions, 17 changer transitions 0/95 dead transitions. [2023-08-30 03:30:34,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 95 transitions, 624 flow [2023-08-30 03:30:34,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:30:34,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:30:34,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 627 transitions. [2023-08-30 03:30:34,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2023-08-30 03:30:34,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 627 transitions. [2023-08-30 03:30:34,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 627 transitions. [2023-08-30 03:30:34,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:30:34,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 627 transitions. [2023-08-30 03:30:34,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:34,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:34,209 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:34,209 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 379 flow. Second operand 3 states and 627 transitions. [2023-08-30 03:30:34,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 95 transitions, 624 flow [2023-08-30 03:30:34,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 95 transitions, 592 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:30:34,216 INFO L231 Difference]: Finished difference. Result has 84 places, 89 transitions, 511 flow [2023-08-30 03:30:34,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=80, 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=511, PETRI_PLACES=84, PETRI_TRANSITIONS=89} [2023-08-30 03:30:34,218 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -2 predicate places. [2023-08-30 03:30:34,218 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 89 transitions, 511 flow [2023-08-30 03:30:34,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:34,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:30:34,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:30:34,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-08-30 03:30:34,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:34,433 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:30:34,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:30:34,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1276002438, now seen corresponding path program 1 times [2023-08-30 03:30:34,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:30:34,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283940772] [2023-08-30 03:30:34,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:30:34,435 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:34,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:30:34,436 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:30:34,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-08-30 03:30:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:30:34,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 03:30:34,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:30:34,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:30:34,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 03:30:34,727 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-30 03:30:34,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-08-30 03:30:34,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:30:34,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:30:34,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:30:34,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283940772] [2023-08-30 03:30:34,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283940772] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:30:34,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:30:34,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:30:34,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457252587] [2023-08-30 03:30:34,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:30:34,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:30:34,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:30:34,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:30:34,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:30:35,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 475 [2023-08-30 03:30:35,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 89 transitions, 511 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) [2023-08-30 03:30:35,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:30:35,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 475 [2023-08-30 03:30:35,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:30:36,125 INFO L130 PetriNetUnfolder]: 734/1591 cut-off events. [2023-08-30 03:30:36,125 INFO L131 PetriNetUnfolder]: For 2928/3052 co-relation queries the response was YES. [2023-08-30 03:30:36,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5098 conditions, 1591 events. 734/1591 cut-off events. For 2928/3052 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10616 event pairs, 380 based on Foata normal form. 0/1355 useless extension candidates. Maximal degree in co-relation 5085. Up to 919 conditions per place. [2023-08-30 03:30:36,132 INFO L137 encePairwiseOnDemand]: 464/475 looper letters, 53 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2023-08-30 03:30:36,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 93 transitions, 655 flow [2023-08-30 03:30:36,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:30:36,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:30:36,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 647 transitions. [2023-08-30 03:30:36,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45403508771929824 [2023-08-30 03:30:36,135 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 647 transitions. [2023-08-30 03:30:36,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 647 transitions. [2023-08-30 03:30:36,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:30:36,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 647 transitions. [2023-08-30 03:30:36,137 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) [2023-08-30 03:30:36,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:36,140 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:36,140 INFO L175 Difference]: Start difference. First operand has 84 places, 89 transitions, 511 flow. Second operand 3 states and 647 transitions. [2023-08-30 03:30:36,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 93 transitions, 655 flow [2023-08-30 03:30:36,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 93 transitions, 621 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:30:36,149 INFO L231 Difference]: Finished difference. Result has 82 places, 85 transitions, 483 flow [2023-08-30 03:30:36,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=483, PETRI_PLACES=82, PETRI_TRANSITIONS=85} [2023-08-30 03:30:36,149 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2023-08-30 03:30:36,149 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 85 transitions, 483 flow [2023-08-30 03:30:36,150 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) [2023-08-30 03:30:36,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:30:36,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:30:36,164 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 (12)] Ended with exit code 0 [2023-08-30 03:30:36,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:36,365 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:30:36,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:30:36,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1276003531, now seen corresponding path program 1 times [2023-08-30 03:30:36,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:30:36,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73883436] [2023-08-30 03:30:36,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:30:36,366 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:36,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:30:36,367 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:30:36,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-08-30 03:30:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:30:36,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 03:30:36,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:30:36,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 03:30:36,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:30:36,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:30:36,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:30:36,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73883436] [2023-08-30 03:30:36,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73883436] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:30:36,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:30:36,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:30:36,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40496456] [2023-08-30 03:30:36,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:30:36,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:30:36,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:30:36,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:30:36,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:30:37,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 475 [2023-08-30 03:30:37,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 85 transitions, 483 flow. Second operand has 5 states, 5 states have (on average 198.2) internal successors, (991), 5 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:37,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:30:37,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 475 [2023-08-30 03:30:37,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:30:39,987 INFO L130 PetriNetUnfolder]: 764/1676 cut-off events. [2023-08-30 03:30:39,988 INFO L131 PetriNetUnfolder]: For 2999/3116 co-relation queries the response was YES. [2023-08-30 03:30:39,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5131 conditions, 1676 events. 764/1676 cut-off events. For 2999/3116 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 11596 event pairs, 71 based on Foata normal form. 285/1789 useless extension candidates. Maximal degree in co-relation 5118. Up to 905 conditions per place. [2023-08-30 03:30:39,995 INFO L137 encePairwiseOnDemand]: 467/475 looper letters, 101 selfloop transitions, 8 changer transitions 2/133 dead transitions. [2023-08-30 03:30:39,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 133 transitions, 982 flow [2023-08-30 03:30:39,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:30:39,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:30:39,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1065 transitions. [2023-08-30 03:30:39,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44842105263157894 [2023-08-30 03:30:40,000 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1065 transitions. [2023-08-30 03:30:40,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1065 transitions. [2023-08-30 03:30:40,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:30:40,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1065 transitions. [2023-08-30 03:30:40,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 213.0) internal successors, (1065), 5 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:40,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 475.0) internal successors, (2850), 6 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:40,006 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 475.0) internal successors, (2850), 6 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:40,006 INFO L175 Difference]: Start difference. First operand has 82 places, 85 transitions, 483 flow. Second operand 5 states and 1065 transitions. [2023-08-30 03:30:40,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 133 transitions, 982 flow [2023-08-30 03:30:40,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 133 transitions, 944 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:30:40,016 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 498 flow [2023-08-30 03:30:40,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2023-08-30 03:30:40,017 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 0 predicate places. [2023-08-30 03:30:40,017 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 498 flow [2023-08-30 03:30:40,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 198.2) internal successors, (991), 5 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:40,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:30:40,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:30:40,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-08-30 03:30:40,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:40,230 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:30:40,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:30:40,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1276003530, now seen corresponding path program 1 times [2023-08-30 03:30:40,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:30:40,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839633545] [2023-08-30 03:30:40,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:30:40,231 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:40,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:30:40,232 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:30:40,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-08-30 03:30:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:30:40,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 03:30:40,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:30:40,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 03:30:40,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:30:40,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:30:40,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:30:40,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839633545] [2023-08-30 03:30:40,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839633545] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:30:40,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:30:40,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:30:40,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897832985] [2023-08-30 03:30:40,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:30:40,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:30:40,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:30:40,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:30:40,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:30:40,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 475 [2023-08-30 03:30:40,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 498 flow. Second operand has 5 states, 5 states have (on average 194.2) internal successors, (971), 5 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:40,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:30:40,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 475 [2023-08-30 03:30:40,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:30:43,718 INFO L130 PetriNetUnfolder]: 1131/2073 cut-off events. [2023-08-30 03:30:43,718 INFO L131 PetriNetUnfolder]: For 3592/3744 co-relation queries the response was YES. [2023-08-30 03:30:43,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7015 conditions, 2073 events. 1131/2073 cut-off events. For 3592/3744 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12291 event pairs, 210 based on Foata normal form. 190/2105 useless extension candidates. Maximal degree in co-relation 7000. Up to 1117 conditions per place. [2023-08-30 03:30:43,728 INFO L137 encePairwiseOnDemand]: 458/475 looper letters, 101 selfloop transitions, 25 changer transitions 0/143 dead transitions. [2023-08-30 03:30:43,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 143 transitions, 1045 flow [2023-08-30 03:30:43,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:30:43,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:30:43,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1253 transitions. [2023-08-30 03:30:43,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43964912280701757 [2023-08-30 03:30:43,733 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1253 transitions. [2023-08-30 03:30:43,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1253 transitions. [2023-08-30 03:30:43,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:30:43,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1253 transitions. [2023-08-30 03:30:43,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.83333333333334) internal successors, (1253), 6 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:43,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:43,742 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:43,742 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 498 flow. Second operand 6 states and 1253 transitions. [2023-08-30 03:30:43,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 143 transitions, 1045 flow [2023-08-30 03:30:43,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 143 transitions, 1036 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:30:43,750 INFO L231 Difference]: Finished difference. Result has 93 places, 96 transitions, 671 flow [2023-08-30 03:30:43,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=671, PETRI_PLACES=93, PETRI_TRANSITIONS=96} [2023-08-30 03:30:43,751 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 7 predicate places. [2023-08-30 03:30:43,751 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 96 transitions, 671 flow [2023-08-30 03:30:43,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 194.2) internal successors, (971), 5 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:43,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:30:43,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:30:43,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-08-30 03:30:43,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:43,964 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:30:43,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:30:43,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1812195110, now seen corresponding path program 1 times [2023-08-30 03:30:43,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:30:43,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797423075] [2023-08-30 03:30:43,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:30:43,966 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:43,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:30:43,967 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:30:44,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-08-30 03:30:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:30:44,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 03:30:44,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:30:44,373 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_191| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_191|) (_ bv0 1)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_191| (_ bv0 1))))) is different from true [2023-08-30 03:30:44,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:30:44,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:30:44,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:30:44,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797423075] [2023-08-30 03:30:44,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797423075] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:30:44,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:30:44,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:30:44,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841661470] [2023-08-30 03:30:44,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:30:44,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:30:44,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:30:44,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:30:44,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-08-30 03:30:44,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 475 [2023-08-30 03:30:44,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 96 transitions, 671 flow. Second operand has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:44,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:30:44,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 475 [2023-08-30 03:30:44,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:30:46,114 INFO L130 PetriNetUnfolder]: 1848/3148 cut-off events. [2023-08-30 03:30:46,114 INFO L131 PetriNetUnfolder]: For 7482/7482 co-relation queries the response was YES. [2023-08-30 03:30:46,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11490 conditions, 3148 events. 1848/3148 cut-off events. For 7482/7482 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 17859 event pairs, 757 based on Foata normal form. 0/2854 useless extension candidates. Maximal degree in co-relation 11472. Up to 1526 conditions per place. [2023-08-30 03:30:46,125 INFO L137 encePairwiseOnDemand]: 453/475 looper letters, 84 selfloop transitions, 32 changer transitions 2/125 dead transitions. [2023-08-30 03:30:46,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 125 transitions, 1064 flow [2023-08-30 03:30:46,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:30:46,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:30:46,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 636 transitions. [2023-08-30 03:30:46,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33473684210526317 [2023-08-30 03:30:46,128 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 636 transitions. [2023-08-30 03:30:46,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 636 transitions. [2023-08-30 03:30:46,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:30:46,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 636 transitions. [2023-08-30 03:30:46,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 159.0) internal successors, (636), 4 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) [2023-08-30 03:30:46,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 475.0) internal successors, (2375), 5 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:46,133 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 475.0) internal successors, (2375), 5 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:46,133 INFO L175 Difference]: Start difference. First operand has 93 places, 96 transitions, 671 flow. Second operand 4 states and 636 transitions. [2023-08-30 03:30:46,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 125 transitions, 1064 flow [2023-08-30 03:30:46,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 125 transitions, 1055 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:30:46,146 INFO L231 Difference]: Finished difference. Result has 95 places, 111 transitions, 862 flow [2023-08-30 03:30:46,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=91, 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=862, PETRI_PLACES=95, PETRI_TRANSITIONS=111} [2023-08-30 03:30:46,146 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 9 predicate places. [2023-08-30 03:30:46,147 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 111 transitions, 862 flow [2023-08-30 03:30:46,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:46,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:30:46,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:30:46,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-08-30 03:30:46,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:46,361 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:30:46,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:30:46,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1951799817, now seen corresponding path program 1 times [2023-08-30 03:30:46,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:30:46,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731928244] [2023-08-30 03:30:46,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:30:46,362 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:46,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:30:46,363 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:30:46,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-08-30 03:30:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:30:46,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 03:30:46,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:30:46,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 03:30:46,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 03:30:46,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:30:46,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 03:30:46,709 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:30:46,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-30 03:30:46,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:30:46,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:30:46,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:30:46,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731928244] [2023-08-30 03:30:46,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1731928244] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:30:46,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:30:46,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 03:30:46,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918884597] [2023-08-30 03:30:46,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:30:46,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 03:30:46,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:30:46,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 03:30:46,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 03:30:47,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 475 [2023-08-30 03:30:47,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 111 transitions, 862 flow. Second operand has 6 states, 6 states have (on average 190.33333333333334) internal successors, (1142), 6 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:47,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:30:47,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 475 [2023-08-30 03:30:47,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:30:50,028 INFO L130 PetriNetUnfolder]: 1647/2969 cut-off events. [2023-08-30 03:30:50,028 INFO L131 PetriNetUnfolder]: For 8742/8880 co-relation queries the response was YES. [2023-08-30 03:30:50,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12002 conditions, 2969 events. 1647/2969 cut-off events. For 8742/8880 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 18600 event pairs, 514 based on Foata normal form. 26/2798 useless extension candidates. Maximal degree in co-relation 11982. Up to 1585 conditions per place. [2023-08-30 03:30:50,040 INFO L137 encePairwiseOnDemand]: 459/475 looper letters, 102 selfloop transitions, 26 changer transitions 0/154 dead transitions. [2023-08-30 03:30:50,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 154 transitions, 1373 flow [2023-08-30 03:30:50,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 03:30:50,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 03:30:50,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1406 transitions. [2023-08-30 03:30:50,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4228571428571429 [2023-08-30 03:30:50,044 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1406 transitions. [2023-08-30 03:30:50,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1406 transitions. [2023-08-30 03:30:50,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:30:50,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1406 transitions. [2023-08-30 03:30:50,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 200.85714285714286) internal successors, (1406), 7 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:50,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 475.0) internal successors, (3800), 8 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:50,050 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 475.0) internal successors, (3800), 8 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:50,050 INFO L175 Difference]: Start difference. First operand has 95 places, 111 transitions, 862 flow. Second operand 7 states and 1406 transitions. [2023-08-30 03:30:50,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 154 transitions, 1373 flow [2023-08-30 03:30:50,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 154 transitions, 1287 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-08-30 03:30:50,067 INFO L231 Difference]: Finished difference. Result has 94 places, 109 transitions, 854 flow [2023-08-30 03:30:50,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=854, PETRI_PLACES=94, PETRI_TRANSITIONS=109} [2023-08-30 03:30:50,067 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 8 predicate places. [2023-08-30 03:30:50,068 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 109 transitions, 854 flow [2023-08-30 03:30:50,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.33333333333334) internal successors, (1142), 6 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:50,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:30:50,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:30:50,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-08-30 03:30:50,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:50,283 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)] === [2023-08-30 03:30:50,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:30:50,283 INFO L85 PathProgramCache]: Analyzing trace with hash -2121042600, now seen corresponding path program 1 times [2023-08-30 03:30:50,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:30:50,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465607091] [2023-08-30 03:30:50,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:30:50,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:50,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:30:50,285 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:30:50,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-08-30 03:30:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:30:50,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 03:30:50,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:30:50,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 03:30:50,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 03:30:50,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:30:50,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 03:30:50,641 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:30:50,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-30 03:30:50,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:30:50,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:30:50,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:30:50,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465607091] [2023-08-30 03:30:50,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465607091] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:30:50,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:30:50,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 03:30:50,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036119111] [2023-08-30 03:30:50,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:30:50,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 03:30:50,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:30:50,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 03:30:50,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 03:30:51,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 475 [2023-08-30 03:30:51,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 109 transitions, 854 flow. Second operand has 6 states, 6 states have (on average 190.33333333333334) internal successors, (1142), 6 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:51,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:30:51,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 475 [2023-08-30 03:30:51,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:30:55,287 INFO L130 PetriNetUnfolder]: 2035/3643 cut-off events. [2023-08-30 03:30:55,287 INFO L131 PetriNetUnfolder]: For 11267/11447 co-relation queries the response was YES. [2023-08-30 03:30:55,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15103 conditions, 3643 events. 2035/3643 cut-off events. For 11267/11447 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 23693 event pairs, 634 based on Foata normal form. 34/3522 useless extension candidates. Maximal degree in co-relation 15083. Up to 2081 conditions per place. [2023-08-30 03:30:55,300 INFO L137 encePairwiseOnDemand]: 459/475 looper letters, 127 selfloop transitions, 26 changer transitions 0/168 dead transitions. [2023-08-30 03:30:55,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 168 transitions, 1538 flow [2023-08-30 03:30:55,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 03:30:55,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 03:30:55,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1419 transitions. [2023-08-30 03:30:55,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267669172932331 [2023-08-30 03:30:55,305 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1419 transitions. [2023-08-30 03:30:55,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1419 transitions. [2023-08-30 03:30:55,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:30:55,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1419 transitions. [2023-08-30 03:30:55,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 202.71428571428572) internal successors, (1419), 7 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:55,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 475.0) internal successors, (3800), 8 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:55,312 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 475.0) internal successors, (3800), 8 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:55,312 INFO L175 Difference]: Start difference. First operand has 94 places, 109 transitions, 854 flow. Second operand 7 states and 1419 transitions. [2023-08-30 03:30:55,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 168 transitions, 1538 flow [2023-08-30 03:30:55,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 168 transitions, 1499 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 03:30:55,334 INFO L231 Difference]: Finished difference. Result has 93 places, 107 transitions, 893 flow [2023-08-30 03:30:55,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=893, PETRI_PLACES=93, PETRI_TRANSITIONS=107} [2023-08-30 03:30:55,334 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 7 predicate places. [2023-08-30 03:30:55,335 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 107 transitions, 893 flow [2023-08-30 03:30:55,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.33333333333334) internal successors, (1142), 6 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:55,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:30:55,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:30:55,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-08-30 03:30:55,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:55,549 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:30:55,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:30:55,549 INFO L85 PathProgramCache]: Analyzing trace with hash -864406294, now seen corresponding path program 1 times [2023-08-30 03:30:55,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:30:55,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48480875] [2023-08-30 03:30:55,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:30:55,550 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:55,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:30:55,551 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:30:55,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-08-30 03:30:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:30:55,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 03:30:55,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:30:55,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:30:55,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:30:55,741 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:30:55,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48480875] [2023-08-30 03:30:55,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48480875] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:30:55,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:30:55,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:30:55,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011646229] [2023-08-30 03:30:55,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:30:55,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:30:55,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:30:55,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:30:55,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:30:55,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 475 [2023-08-30 03:30:55,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 107 transitions, 893 flow. Second operand has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:55,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:30:55,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 475 [2023-08-30 03:30:55,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:30:57,075 INFO L130 PetriNetUnfolder]: 107/263 cut-off events. [2023-08-30 03:30:57,075 INFO L131 PetriNetUnfolder]: For 613/663 co-relation queries the response was YES. [2023-08-30 03:30:57,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 979 conditions, 263 events. 107/263 cut-off events. For 613/663 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1066 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. [2023-08-30 03:30:57,076 INFO L137 encePairwiseOnDemand]: 473/475 looper letters, 41 selfloop transitions, 1 changer transitions 1/54 dead transitions. [2023-08-30 03:30:57,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 54 transitions, 437 flow [2023-08-30 03:30:57,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:30:57,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:30:57,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 639 transitions. [2023-08-30 03:30:57,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44842105263157894 [2023-08-30 03:30:57,079 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 639 transitions. [2023-08-30 03:30:57,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 639 transitions. [2023-08-30 03:30:57,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:30:57,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 639 transitions. [2023-08-30 03:30:57,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:57,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:57,083 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:57,083 INFO L175 Difference]: Start difference. First operand has 93 places, 107 transitions, 893 flow. Second operand 3 states and 639 transitions. [2023-08-30 03:30:57,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 54 transitions, 437 flow [2023-08-30 03:30:57,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 54 transitions, 268 flow, removed 25 selfloop flow, removed 21 redundant places. [2023-08-30 03:30:57,085 INFO L231 Difference]: Finished difference. Result has 61 places, 46 transitions, 152 flow [2023-08-30 03:30:57,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=59, 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=152, PETRI_PLACES=61, PETRI_TRANSITIONS=46} [2023-08-30 03:30:57,086 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -25 predicate places. [2023-08-30 03:30:57,086 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 46 transitions, 152 flow [2023-08-30 03:30:57,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:57,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:30:57,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:30:57,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-08-30 03:30:57,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:57,301 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:30:57,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:30:57,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1441520669, now seen corresponding path program 1 times [2023-08-30 03:30:57,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:30:57,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638423250] [2023-08-30 03:30:57,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:30:57,302 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:57,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:30:57,303 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:30:57,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-08-30 03:30:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:30:57,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 03:30:57,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:30:57,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 03:30:57,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:30:57,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:30:57,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:30:57,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638423250] [2023-08-30 03:30:57,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638423250] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:30:57,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:30:57,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:30:57,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320926769] [2023-08-30 03:30:57,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:30:57,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:30:57,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:30:57,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:30:57,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:30:57,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 475 [2023-08-30 03:30:57,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 46 transitions, 152 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) [2023-08-30 03:30:57,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:30:57,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 475 [2023-08-30 03:30:57,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:30:59,100 INFO L130 PetriNetUnfolder]: 102/254 cut-off events. [2023-08-30 03:30:59,100 INFO L131 PetriNetUnfolder]: For 158/162 co-relation queries the response was YES. [2023-08-30 03:30:59,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 676 conditions, 254 events. 102/254 cut-off events. For 158/162 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 983 event pairs, 55 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 666. Up to 120 conditions per place. [2023-08-30 03:30:59,104 INFO L137 encePairwiseOnDemand]: 466/475 looper letters, 30 selfloop transitions, 10 changer transitions 0/49 dead transitions. [2023-08-30 03:30:59,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 49 transitions, 248 flow [2023-08-30 03:30:59,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:30:59,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:30:59,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 636 transitions. [2023-08-30 03:30:59,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4463157894736842 [2023-08-30 03:30:59,106 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 636 transitions. [2023-08-30 03:30:59,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 636 transitions. [2023-08-30 03:30:59,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:30:59,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 636 transitions. [2023-08-30 03:30:59,107 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) [2023-08-30 03:30:59,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:59,109 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:59,110 INFO L175 Difference]: Start difference. First operand has 61 places, 46 transitions, 152 flow. Second operand 3 states and 636 transitions. [2023-08-30 03:30:59,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 49 transitions, 248 flow [2023-08-30 03:30:59,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 49 transitions, 247 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:30:59,111 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 167 flow [2023-08-30 03:30:59,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=57, 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=167, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2023-08-30 03:30:59,112 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -27 predicate places. [2023-08-30 03:30:59,112 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 167 flow [2023-08-30 03:30:59,112 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) [2023-08-30 03:30:59,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:30:59,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:30:59,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-08-30 03:30:59,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:59,327 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:30:59,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:30:59,327 INFO L85 PathProgramCache]: Analyzing trace with hash 331639650, now seen corresponding path program 1 times [2023-08-30 03:30:59,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:30:59,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897128455] [2023-08-30 03:30:59,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:30:59,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:30:59,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:30:59,329 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:30:59,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-08-30 03:30:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:30:59,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 03:30:59,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:30:59,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 03:30:59,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:30:59,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:30:59,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:30:59,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897128455] [2023-08-30 03:30:59,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897128455] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:30:59,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:30:59,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:30:59,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081155662] [2023-08-30 03:30:59,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:30:59,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:30:59,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:30:59,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:30:59,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:30:59,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 475 [2023-08-30 03:30:59,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:30:59,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:30:59,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 475 [2023-08-30 03:30:59,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:31:01,291 INFO L130 PetriNetUnfolder]: 102/248 cut-off events. [2023-08-30 03:31:01,291 INFO L131 PetriNetUnfolder]: For 192/196 co-relation queries the response was YES. [2023-08-30 03:31:01,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 248 events. 102/248 cut-off events. For 192/196 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 952 event pairs, 55 based on Foata normal form. 1/237 useless extension candidates. Maximal degree in co-relation 686. Up to 120 conditions per place. [2023-08-30 03:31:01,292 INFO L137 encePairwiseOnDemand]: 466/475 looper letters, 30 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2023-08-30 03:31:01,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 47 transitions, 263 flow [2023-08-30 03:31:01,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:31:01,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:31:01,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 627 transitions. [2023-08-30 03:31:01,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2023-08-30 03:31:01,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 627 transitions. [2023-08-30 03:31:01,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 627 transitions. [2023-08-30 03:31:01,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:31:01,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 627 transitions. [2023-08-30 03:31:01,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:01,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:01,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:01,297 INFO L175 Difference]: Start difference. First operand has 59 places, 44 transitions, 167 flow. Second operand 3 states and 627 transitions. [2023-08-30 03:31:01,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 47 transitions, 263 flow [2023-08-30 03:31:01,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 47 transitions, 243 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:31:01,298 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 163 flow [2023-08-30 03:31:01,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=55, 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=163, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2023-08-30 03:31:01,299 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -29 predicate places. [2023-08-30 03:31:01,299 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 163 flow [2023-08-30 03:31:01,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:01,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:01,299 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] [2023-08-30 03:31:01,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-08-30 03:31:01,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:01,501 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:31:01,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:01,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1735467703, now seen corresponding path program 1 times [2023-08-30 03:31:01,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:01,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621419506] [2023-08-30 03:31:01,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:31:01,502 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:01,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:01,503 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:01,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-08-30 03:31:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:31:01,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 03:31:01,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:01,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-08-30 03:31:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:01,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:01,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:01,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621419506] [2023-08-30 03:31:01,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621419506] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:01,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:01,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 03:31:01,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351311283] [2023-08-30 03:31:01,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:01,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 03:31:01,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:01,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 03:31:01,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 03:31:01,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 475 [2023-08-30 03:31:01,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:01,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:31:01,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 475 [2023-08-30 03:31:01,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:31:03,823 INFO L130 PetriNetUnfolder]: 114/283 cut-off events. [2023-08-30 03:31:03,823 INFO L131 PetriNetUnfolder]: For 233/239 co-relation queries the response was YES. [2023-08-30 03:31:03,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 283 events. 114/283 cut-off events. For 233/239 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1237 event pairs, 47 based on Foata normal form. 11/282 useless extension candidates. Maximal degree in co-relation 784. Up to 123 conditions per place. [2023-08-30 03:31:03,824 INFO L137 encePairwiseOnDemand]: 468/475 looper letters, 44 selfloop transitions, 8 changer transitions 0/59 dead transitions. [2023-08-30 03:31:03,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 341 flow [2023-08-30 03:31:03,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:31:03,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:31:03,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1246 transitions. [2023-08-30 03:31:03,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43719298245614036 [2023-08-30 03:31:03,827 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1246 transitions. [2023-08-30 03:31:03,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1246 transitions. [2023-08-30 03:31:03,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:31:03,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1246 transitions. [2023-08-30 03:31:03,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 207.66666666666666) internal successors, (1246), 6 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:03,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:03,831 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:03,831 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 163 flow. Second operand 6 states and 1246 transitions. [2023-08-30 03:31:03,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 341 flow [2023-08-30 03:31:03,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 315 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:31:03,833 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 193 flow [2023-08-30 03:31:03,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2023-08-30 03:31:03,833 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -24 predicate places. [2023-08-30 03:31:03,834 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 193 flow [2023-08-30 03:31:03,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:03,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:03,834 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] [2023-08-30 03:31:03,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-08-30 03:31:04,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:04,045 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:31:04,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:04,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1088051269, now seen corresponding path program 2 times [2023-08-30 03:31:04,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:04,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462210135] [2023-08-30 03:31:04,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 03:31:04,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:04,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:04,047 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:04,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-08-30 03:31:04,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 03:31:04,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:31:04,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 03:31:04,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:04,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-08-30 03:31:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:04,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:04,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:04,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462210135] [2023-08-30 03:31:04,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462210135] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:04,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:04,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 03:31:04,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256069916] [2023-08-30 03:31:04,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:04,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 03:31:04,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:04,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 03:31:04,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 03:31:04,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 475 [2023-08-30 03:31:04,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:04,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:31:04,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 475 [2023-08-30 03:31:04,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:31:07,023 INFO L130 PetriNetUnfolder]: 52/172 cut-off events. [2023-08-30 03:31:07,024 INFO L131 PetriNetUnfolder]: For 212/215 co-relation queries the response was YES. [2023-08-30 03:31:07,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 172 events. 52/172 cut-off events. For 212/215 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 610 event pairs, 12 based on Foata normal form. 15/179 useless extension candidates. Maximal degree in co-relation 507. Up to 77 conditions per place. [2023-08-30 03:31:07,024 INFO L137 encePairwiseOnDemand]: 468/475 looper letters, 36 selfloop transitions, 13 changer transitions 0/56 dead transitions. [2023-08-30 03:31:07,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 56 transitions, 327 flow [2023-08-30 03:31:07,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 03:31:07,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 03:31:07,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1443 transitions. [2023-08-30 03:31:07,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43398496240601503 [2023-08-30 03:31:07,027 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1443 transitions. [2023-08-30 03:31:07,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1443 transitions. [2023-08-30 03:31:07,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:31:07,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1443 transitions. [2023-08-30 03:31:07,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 206.14285714285714) internal successors, (1443), 7 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:07,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 475.0) internal successors, (3800), 8 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:07,033 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 475.0) internal successors, (3800), 8 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:07,033 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 193 flow. Second operand 7 states and 1443 transitions. [2023-08-30 03:31:07,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 56 transitions, 327 flow [2023-08-30 03:31:07,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 56 transitions, 292 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-08-30 03:31:07,036 INFO L231 Difference]: Finished difference. Result has 63 places, 46 transitions, 190 flow [2023-08-30 03:31:07,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=190, PETRI_PLACES=63, PETRI_TRANSITIONS=46} [2023-08-30 03:31:07,036 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -23 predicate places. [2023-08-30 03:31:07,036 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 46 transitions, 190 flow [2023-08-30 03:31:07,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:07,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:07,037 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] [2023-08-30 03:31:07,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-08-30 03:31:07,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:07,253 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:31:07,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:07,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1929543140, now seen corresponding path program 1 times [2023-08-30 03:31:07,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:07,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410603521] [2023-08-30 03:31:07,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:31:07,255 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:07,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:07,256 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:07,257 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 (23)] Waiting until timeout for monitored process [2023-08-30 03:31:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:31:07,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-30 03:31:07,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:07,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 03:31:07,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 03:31:07,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:31:07,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 03:31:07,882 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:31:07,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-30 03:31:07,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:07,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:07,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:07,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410603521] [2023-08-30 03:31:07,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410603521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:07,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:07,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 03:31:07,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441639075] [2023-08-30 03:31:07,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:07,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 03:31:07,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:07,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 03:31:07,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-30 03:31:08,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 475 [2023-08-30 03:31:08,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 46 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 181.57142857142858) internal successors, (1271), 7 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:08,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:31:08,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 475 [2023-08-30 03:31:08,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:31:11,159 INFO L130 PetriNetUnfolder]: 52/167 cut-off events. [2023-08-30 03:31:11,160 INFO L131 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2023-08-30 03:31:11,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 167 events. 52/167 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 603 event pairs, 30 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 460. Up to 119 conditions per place. [2023-08-30 03:31:11,160 INFO L137 encePairwiseOnDemand]: 464/475 looper letters, 31 selfloop transitions, 6 changer transitions 0/42 dead transitions. [2023-08-30 03:31:11,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 42 transitions, 252 flow [2023-08-30 03:31:11,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:31:11,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:31:11,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1110 transitions. [2023-08-30 03:31:11,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3894736842105263 [2023-08-30 03:31:11,163 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1110 transitions. [2023-08-30 03:31:11,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1110 transitions. [2023-08-30 03:31:11,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:31:11,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1110 transitions. [2023-08-30 03:31:11,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:11,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:11,168 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:11,168 INFO L175 Difference]: Start difference. First operand has 63 places, 46 transitions, 190 flow. Second operand 6 states and 1110 transitions. [2023-08-30 03:31:11,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 42 transitions, 252 flow [2023-08-30 03:31:11,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 42 transitions, 235 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-30 03:31:11,170 INFO L231 Difference]: Finished difference. Result has 58 places, 40 transitions, 169 flow [2023-08-30 03:31:11,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=169, PETRI_PLACES=58, PETRI_TRANSITIONS=40} [2023-08-30 03:31:11,170 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -28 predicate places. [2023-08-30 03:31:11,170 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 40 transitions, 169 flow [2023-08-30 03:31:11,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 181.57142857142858) internal successors, (1271), 7 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:11,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:11,171 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] [2023-08-30 03:31:11,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-08-30 03:31:11,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:11,386 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:31:11,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:11,387 INFO L85 PathProgramCache]: Analyzing trace with hash 648864423, now seen corresponding path program 3 times [2023-08-30 03:31:11,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:11,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072716646] [2023-08-30 03:31:11,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 03:31:11,387 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:11,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:11,388 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:11,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-08-30 03:31:11,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 03:31:11,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:31:11,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 78 conjunts are in the unsatisfiable core [2023-08-30 03:31:11,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:12,028 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 03:31:12,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-30 03:31:12,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-30 03:31:12,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:31:12,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-30 03:31:12,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:31:12,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-30 03:31:12,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:31:12,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:31:12,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:31:12,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:31:12,878 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:31:12,879 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:31:12,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-30 03:31:13,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 30 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-30 03:31:13,400 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 [2023-08-30 03:31:13,588 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 03:31:13,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-30 03:31:13,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-08-30 03:31:13,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:13,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:13,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:13,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072716646] [2023-08-30 03:31:13,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072716646] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:13,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:13,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 03:31:13,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345759485] [2023-08-30 03:31:13,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:13,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 03:31:13,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:13,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 03:31:13,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-30 03:31:19,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-08-30 03:31:19,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 40 transitions, 169 flow. Second operand has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:19,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:31:19,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-08-30 03:31:19,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:31:28,711 INFO L130 PetriNetUnfolder]: 116/303 cut-off events. [2023-08-30 03:31:28,712 INFO L131 PetriNetUnfolder]: For 235/235 co-relation queries the response was YES. [2023-08-30 03:31:28,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 303 events. 116/303 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1234 event pairs, 20 based on Foata normal form. 1/301 useless extension candidates. Maximal degree in co-relation 824. Up to 153 conditions per place. [2023-08-30 03:31:28,713 INFO L137 encePairwiseOnDemand]: 456/475 looper letters, 79 selfloop transitions, 28 changer transitions 0/109 dead transitions. [2023-08-30 03:31:28,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 109 transitions, 671 flow [2023-08-30 03:31:28,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 03:31:28,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 03:31:28,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2146 transitions. [2023-08-30 03:31:28,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34753036437246965 [2023-08-30 03:31:28,717 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2146 transitions. [2023-08-30 03:31:28,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2146 transitions. [2023-08-30 03:31:28,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:31:28,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2146 transitions. [2023-08-30 03:31:28,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 165.07692307692307) internal successors, (2146), 13 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:28,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:28,725 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:28,725 INFO L175 Difference]: Start difference. First operand has 58 places, 40 transitions, 169 flow. Second operand 13 states and 2146 transitions. [2023-08-30 03:31:28,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 109 transitions, 671 flow [2023-08-30 03:31:28,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 109 transitions, 648 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 03:31:28,727 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 394 flow [2023-08-30 03:31:28,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=394, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2023-08-30 03:31:28,728 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -10 predicate places. [2023-08-30 03:31:28,728 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 394 flow [2023-08-30 03:31:28,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:28,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:28,728 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] [2023-08-30 03:31:28,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-08-30 03:31:28,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:28,941 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:31:28,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:28,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1336909091, now seen corresponding path program 1 times [2023-08-30 03:31:28,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:28,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670138399] [2023-08-30 03:31:28,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:31:28,942 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:28,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:28,943 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:28,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-08-30 03:31:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:31:29,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 03:31:29,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:29,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 03:31:29,344 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-30 03:31:29,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-08-30 03:31:29,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:29,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:29,402 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:29,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670138399] [2023-08-30 03:31:29,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670138399] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:29,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:29,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:31:29,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817491209] [2023-08-30 03:31:29,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:29,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:31:29,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:29,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:31:29,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:31:29,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 475 [2023-08-30 03:31:29,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 394 flow. Second operand has 4 states, 4 states have (on average 187.5) internal successors, (750), 4 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:29,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:31:29,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 475 [2023-08-30 03:31:29,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:31:30,988 INFO L130 PetriNetUnfolder]: 84/263 cut-off events. [2023-08-30 03:31:30,988 INFO L131 PetriNetUnfolder]: For 362/367 co-relation queries the response was YES. [2023-08-30 03:31:30,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 263 events. 84/263 cut-off events. For 362/367 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1143 event pairs, 31 based on Foata normal form. 3/260 useless extension candidates. Maximal degree in co-relation 882. Up to 113 conditions per place. [2023-08-30 03:31:30,989 INFO L137 encePairwiseOnDemand]: 468/475 looper letters, 54 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2023-08-30 03:31:30,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 75 transitions, 563 flow [2023-08-30 03:31:30,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:31:30,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:31:30,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 765 transitions. [2023-08-30 03:31:30,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4026315789473684 [2023-08-30 03:31:30,991 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 765 transitions. [2023-08-30 03:31:30,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 765 transitions. [2023-08-30 03:31:30,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:31:30,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 765 transitions. [2023-08-30 03:31:30,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:30,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 475.0) internal successors, (2375), 5 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:30,993 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 475.0) internal successors, (2375), 5 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:30,994 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 394 flow. Second operand 4 states and 765 transitions. [2023-08-30 03:31:30,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 75 transitions, 563 flow [2023-08-30 03:31:30,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 75 transitions, 561 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:31:30,996 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 409 flow [2023-08-30 03:31:30,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=409, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2023-08-30 03:31:30,997 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -10 predicate places. [2023-08-30 03:31:30,997 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 409 flow [2023-08-30 03:31:30,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 187.5) internal successors, (750), 4 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:30,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:30,997 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] [2023-08-30 03:31:31,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-08-30 03:31:31,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:31,198 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:31:31,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:31,198 INFO L85 PathProgramCache]: Analyzing trace with hash -2132073185, now seen corresponding path program 1 times [2023-08-30 03:31:31,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:31,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723261005] [2023-08-30 03:31:31,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:31:31,199 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:31,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:31,200 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:31,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-08-30 03:31:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:31:31,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-30 03:31:31,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:31,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 03:31:31,852 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:31:31,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-30 03:31:31,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:31:31,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:31:31,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:31:31,906 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:31:31,906 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:31:31,907 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 [2023-08-30 03:31:32,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 73 [2023-08-30 03:31:32,072 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 39 treesize of output 35 [2023-08-30 03:31:32,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:32,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:32,106 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:32,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723261005] [2023-08-30 03:31:32,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723261005] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:32,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:32,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 03:31:32,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215660025] [2023-08-30 03:31:32,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:32,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 03:31:32,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:32,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 03:31:32,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-30 03:31:33,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 475 [2023-08-30 03:31:33,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 409 flow. Second operand has 9 states, 9 states have (on average 169.22222222222223) internal successors, (1523), 9 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:33,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:31:33,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 475 [2023-08-30 03:31:33,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:31:37,230 INFO L130 PetriNetUnfolder]: 146/416 cut-off events. [2023-08-30 03:31:37,230 INFO L131 PetriNetUnfolder]: For 584/589 co-relation queries the response was YES. [2023-08-30 03:31:37,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1417 conditions, 416 events. 146/416 cut-off events. For 584/589 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2136 event pairs, 23 based on Foata normal form. 3/413 useless extension candidates. Maximal degree in co-relation 1398. Up to 148 conditions per place. [2023-08-30 03:31:37,231 INFO L137 encePairwiseOnDemand]: 464/475 looper letters, 86 selfloop transitions, 25 changer transitions 0/115 dead transitions. [2023-08-30 03:31:37,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 115 transitions, 871 flow [2023-08-30 03:31:37,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 03:31:37,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 03:31:37,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1403 transitions. [2023-08-30 03:31:37,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3692105263157895 [2023-08-30 03:31:37,234 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1403 transitions. [2023-08-30 03:31:37,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1403 transitions. [2023-08-30 03:31:37,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:31:37,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1403 transitions. [2023-08-30 03:31:37,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 175.375) internal successors, (1403), 8 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:37,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 475.0) internal successors, (4275), 9 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:37,240 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 475.0) internal successors, (4275), 9 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:37,240 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 409 flow. Second operand 8 states and 1403 transitions. [2023-08-30 03:31:37,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 115 transitions, 871 flow [2023-08-30 03:31:37,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 115 transitions, 837 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 03:31:37,243 INFO L231 Difference]: Finished difference. Result has 82 places, 75 transitions, 519 flow [2023-08-30 03:31:37,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=519, PETRI_PLACES=82, PETRI_TRANSITIONS=75} [2023-08-30 03:31:37,244 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2023-08-30 03:31:37,244 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 75 transitions, 519 flow [2023-08-30 03:31:37,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 169.22222222222223) internal successors, (1523), 9 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:37,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:37,244 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] [2023-08-30 03:31:37,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-08-30 03:31:37,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:37,445 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)] === [2023-08-30 03:31:37,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:37,445 INFO L85 PathProgramCache]: Analyzing trace with hash 781128905, now seen corresponding path program 4 times [2023-08-30 03:31:37,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:37,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089307206] [2023-08-30 03:31:37,446 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 03:31:37,446 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 [2023-08-30 03:31:37,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:37,447 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:37,449 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 (27)] Waiting until timeout for monitored process [2023-08-30 03:31:37,955 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 03:31:37,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:31:37,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-30 03:31:37,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:38,034 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 03:31:38,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-30 03:31:38,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-30 03:31:38,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:31:38,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-30 03:31:38,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:31:38,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-30 03:31:38,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:31:38,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:31:38,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:31:38,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:31:38,897 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:31:38,898 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:31:38,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-30 03:31:39,124 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 03:31:39,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-30 03:31:39,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-30 03:31:39,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-30 03:31:39,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-08-30 03:31:39,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:39,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:39,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:39,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089307206] [2023-08-30 03:31:39,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089307206] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:39,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:39,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 03:31:39,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202304010] [2023-08-30 03:31:39,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:39,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 03:31:39,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:39,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 03:31:39,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-30 03:31:44,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-08-30 03:31:44,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 75 transitions, 519 flow. Second operand has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:44,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:31:44,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-08-30 03:31:44,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:31:53,442 INFO L130 PetriNetUnfolder]: 201/536 cut-off events. [2023-08-30 03:31:53,442 INFO L131 PetriNetUnfolder]: For 946/946 co-relation queries the response was YES. [2023-08-30 03:31:53,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1895 conditions, 536 events. 201/536 cut-off events. For 946/946 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2907 event pairs, 69 based on Foata normal form. 0/530 useless extension candidates. Maximal degree in co-relation 1874. Up to 368 conditions per place. [2023-08-30 03:31:53,444 INFO L137 encePairwiseOnDemand]: 458/475 looper letters, 99 selfloop transitions, 30 changer transitions 0/131 dead transitions. [2023-08-30 03:31:53,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 131 transitions, 1088 flow [2023-08-30 03:31:53,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 03:31:53,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 03:31:53,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2299 transitions. [2023-08-30 03:31:53,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3457142857142857 [2023-08-30 03:31:53,447 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2299 transitions. [2023-08-30 03:31:53,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2299 transitions. [2023-08-30 03:31:53,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:31:53,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2299 transitions. [2023-08-30 03:31:53,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 164.21428571428572) internal successors, (2299), 14 states have internal predecessors, (2299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:53,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 475.0) internal successors, (7125), 15 states have internal predecessors, (7125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:53,454 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 475.0) internal successors, (7125), 15 states have internal predecessors, (7125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:53,454 INFO L175 Difference]: Start difference. First operand has 82 places, 75 transitions, 519 flow. Second operand 14 states and 2299 transitions. [2023-08-30 03:31:53,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 131 transitions, 1088 flow [2023-08-30 03:31:53,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 131 transitions, 1053 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-30 03:31:53,458 INFO L231 Difference]: Finished difference. Result has 96 places, 94 transitions, 736 flow [2023-08-30 03:31:53,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=736, PETRI_PLACES=96, PETRI_TRANSITIONS=94} [2023-08-30 03:31:53,459 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 10 predicate places. [2023-08-30 03:31:53,459 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 94 transitions, 736 flow [2023-08-30 03:31:53,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:31:53,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:31:53,459 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] [2023-08-30 03:31:53,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-08-30 03:31:53,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:53,661 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:31:53,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:31:53,661 INFO L85 PathProgramCache]: Analyzing trace with hash 95122215, now seen corresponding path program 5 times [2023-08-30 03:31:53,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:31:53,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791336988] [2023-08-30 03:31:53,662 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 03:31:53,662 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:31:53,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:31:53,663 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:31:53,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-08-30 03:31:54,183 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 03:31:54,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:31:54,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-30 03:31:54,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:31:54,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-30 03:31:54,278 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 03:31:54,279 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 [2023-08-30 03:31:54,345 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 03:31:54,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-30 03:31:54,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:31:54,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-30 03:31:54,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:31:55,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:31:55,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:31:55,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:31:55,242 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:31:55,243 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:31:55,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-30 03:31:55,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 30 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-30 03:31:55,645 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 [2023-08-30 03:31:55,790 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 03:31:55,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-30 03:31:55,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-08-30 03:31:56,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:31:56,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:31:56,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:31:56,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791336988] [2023-08-30 03:31:56,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791336988] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:31:56,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:31:56,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 03:31:56,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212752968] [2023-08-30 03:31:56,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:31:56,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 03:31:56,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:31:56,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 03:31:56,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-30 03:32:00,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-08-30 03:32:00,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 94 transitions, 736 flow. Second operand has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:00,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:00,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-08-30 03:32:00,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:05,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:32:10,064 INFO L130 PetriNetUnfolder]: 238/631 cut-off events. [2023-08-30 03:32:10,065 INFO L131 PetriNetUnfolder]: For 1435/1435 co-relation queries the response was YES. [2023-08-30 03:32:10,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2455 conditions, 631 events. 238/631 cut-off events. For 1435/1435 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3687 event pairs, 80 based on Foata normal form. 0/624 useless extension candidates. Maximal degree in co-relation 2429. Up to 468 conditions per place. [2023-08-30 03:32:10,067 INFO L137 encePairwiseOnDemand]: 457/475 looper letters, 110 selfloop transitions, 30 changer transitions 0/142 dead transitions. [2023-08-30 03:32:10,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 142 transitions, 1309 flow [2023-08-30 03:32:10,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 03:32:10,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 03:32:10,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2139 transitions. [2023-08-30 03:32:10,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34639676113360324 [2023-08-30 03:32:10,070 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2139 transitions. [2023-08-30 03:32:10,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2139 transitions. [2023-08-30 03:32:10,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:10,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2139 transitions. [2023-08-30 03:32:10,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 164.53846153846155) internal successors, (2139), 13 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:10,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:10,076 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:10,076 INFO L175 Difference]: Start difference. First operand has 96 places, 94 transitions, 736 flow. Second operand 13 states and 2139 transitions. [2023-08-30 03:32:10,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 142 transitions, 1309 flow [2023-08-30 03:32:10,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 142 transitions, 1277 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-30 03:32:10,081 INFO L231 Difference]: Finished difference. Result has 112 places, 109 transitions, 945 flow [2023-08-30 03:32:10,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=945, PETRI_PLACES=112, PETRI_TRANSITIONS=109} [2023-08-30 03:32:10,082 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 26 predicate places. [2023-08-30 03:32:10,082 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 109 transitions, 945 flow [2023-08-30 03:32:10,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:10,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:10,082 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] [2023-08-30 03:32:10,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-08-30 03:32:10,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:10,283 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:32:10,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:10,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1509559787, now seen corresponding path program 6 times [2023-08-30 03:32:10,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:10,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486807015] [2023-08-30 03:32:10,284 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 03:32:10,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:10,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:10,287 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:32:10,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-08-30 03:32:10,744 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-30 03:32:10,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:32:10,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 78 conjunts are in the unsatisfiable core [2023-08-30 03:32:10,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:10,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-30 03:32:10,816 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 03:32:10,816 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 [2023-08-30 03:32:10,874 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 03:32:10,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-30 03:32:11,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:32:11,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-30 03:32:11,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:32:11,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:32:11,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:32:11,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:32:11,552 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:32:11,552 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:32:11,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-30 03:32:11,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 30 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-30 03:32:11,924 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 03:32:11,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-30 03:32:12,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-08-30 03:32:12,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-30 03:32:12,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:32:12,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:12,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:12,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486807015] [2023-08-30 03:32:12,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486807015] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:12,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:12,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 03:32:12,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737223386] [2023-08-30 03:32:12,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:12,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 03:32:12,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:12,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 03:32:12,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-30 03:32:16,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-08-30 03:32:16,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 109 transitions, 945 flow. Second operand has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:16,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:16,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-08-30 03:32:16,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:23,924 INFO L130 PetriNetUnfolder]: 251/674 cut-off events. [2023-08-30 03:32:23,924 INFO L131 PetriNetUnfolder]: For 1997/1997 co-relation queries the response was YES. [2023-08-30 03:32:23,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2818 conditions, 674 events. 251/674 cut-off events. For 1997/1997 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4015 event pairs, 64 based on Foata normal form. 0/666 useless extension candidates. Maximal degree in co-relation 2785. Up to 440 conditions per place. [2023-08-30 03:32:23,927 INFO L137 encePairwiseOnDemand]: 458/475 looper letters, 116 selfloop transitions, 42 changer transitions 0/160 dead transitions. [2023-08-30 03:32:23,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 160 transitions, 1581 flow [2023-08-30 03:32:23,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 03:32:23,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 03:32:23,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2143 transitions. [2023-08-30 03:32:23,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34704453441295546 [2023-08-30 03:32:23,930 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2143 transitions. [2023-08-30 03:32:23,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2143 transitions. [2023-08-30 03:32:23,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:23,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2143 transitions. [2023-08-30 03:32:23,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 164.84615384615384) internal successors, (2143), 13 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:23,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:23,935 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:23,935 INFO L175 Difference]: Start difference. First operand has 112 places, 109 transitions, 945 flow. Second operand 13 states and 2143 transitions. [2023-08-30 03:32:23,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 160 transitions, 1581 flow [2023-08-30 03:32:23,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 160 transitions, 1511 flow, removed 23 selfloop flow, removed 5 redundant places. [2023-08-30 03:32:23,942 INFO L231 Difference]: Finished difference. Result has 122 places, 121 transitions, 1097 flow [2023-08-30 03:32:23,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1097, PETRI_PLACES=122, PETRI_TRANSITIONS=121} [2023-08-30 03:32:23,943 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 36 predicate places. [2023-08-30 03:32:23,943 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 121 transitions, 1097 flow [2023-08-30 03:32:23,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:23,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:23,944 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] [2023-08-30 03:32:23,958 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 [2023-08-30 03:32:24,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:24,148 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)] === [2023-08-30 03:32:24,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:24,149 INFO L85 PathProgramCache]: Analyzing trace with hash -2136390025, now seen corresponding path program 7 times [2023-08-30 03:32:24,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:24,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752855431] [2023-08-30 03:32:24,150 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 03:32:24,150 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:24,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:24,151 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:32:24,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-08-30 03:32:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:32:24,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-30 03:32:24,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:24,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-30 03:32:24,748 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 03:32:24,750 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 [2023-08-30 03:32:24,814 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 03:32:24,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-30 03:32:25,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:32:25,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-30 03:32:25,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:32:25,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:32:25,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:32:25,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:32:25,540 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:32:25,540 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:32:25,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-30 03:32:25,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 30 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-30 03:32:26,075 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 03:32:26,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-30 03:32:26,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-30 03:32:26,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-08-30 03:32:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:32:26,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:26,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:26,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752855431] [2023-08-30 03:32:26,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752855431] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:26,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:26,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 03:32:26,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542431789] [2023-08-30 03:32:26,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:26,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 03:32:26,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:26,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 03:32:26,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-30 03:32:32,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-08-30 03:32:32,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 121 transitions, 1097 flow. Second operand has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:32,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:32,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-08-30 03:32:32,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:38,686 INFO L130 PetriNetUnfolder]: 253/681 cut-off events. [2023-08-30 03:32:38,686 INFO L131 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2023-08-30 03:32:38,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2963 conditions, 681 events. 253/681 cut-off events. For 2304/2304 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4074 event pairs, 71 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 2926. Up to 478 conditions per place. [2023-08-30 03:32:38,691 INFO L137 encePairwiseOnDemand]: 458/475 looper letters, 119 selfloop transitions, 42 changer transitions 0/163 dead transitions. [2023-08-30 03:32:38,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 163 transitions, 1691 flow [2023-08-30 03:32:38,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 03:32:38,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 03:32:38,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2141 transitions. [2023-08-30 03:32:38,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467206477732794 [2023-08-30 03:32:38,703 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2141 transitions. [2023-08-30 03:32:38,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2141 transitions. [2023-08-30 03:32:38,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:38,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2141 transitions. [2023-08-30 03:32:38,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 164.69230769230768) internal successors, (2141), 13 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:38,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:38,709 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:38,709 INFO L175 Difference]: Start difference. First operand has 122 places, 121 transitions, 1097 flow. Second operand 13 states and 2141 transitions. [2023-08-30 03:32:38,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 163 transitions, 1691 flow [2023-08-30 03:32:38,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 163 transitions, 1609 flow, removed 20 selfloop flow, removed 7 redundant places. [2023-08-30 03:32:38,718 INFO L231 Difference]: Finished difference. Result has 129 places, 125 transitions, 1174 flow [2023-08-30 03:32:38,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1174, PETRI_PLACES=129, PETRI_TRANSITIONS=125} [2023-08-30 03:32:38,719 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 43 predicate places. [2023-08-30 03:32:38,719 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 125 transitions, 1174 flow [2023-08-30 03:32:38,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:38,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:38,720 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] [2023-08-30 03:32:38,733 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 [2023-08-30 03:32:38,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:38,925 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:32:38,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:38,925 INFO L85 PathProgramCache]: Analyzing trace with hash -389764353, now seen corresponding path program 2 times [2023-08-30 03:32:38,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:38,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717078043] [2023-08-30 03:32:38,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 03:32:38,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:38,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:38,927 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:32:38,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-08-30 03:32:39,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 03:32:39,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:32:39,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-30 03:32:39,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:39,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 03:32:39,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:32:39,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:32:39,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:32:39,580 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:32:39,585 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:32:39,586 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 [2023-08-30 03:32:39,637 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:32:39,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-30 03:32:39,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 73 [2023-08-30 03:32:39,777 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 39 treesize of output 35 [2023-08-30 03:32:39,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:32:39,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:39,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:39,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717078043] [2023-08-30 03:32:39,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717078043] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:39,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:39,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 03:32:39,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634121368] [2023-08-30 03:32:39,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:39,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 03:32:39,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:39,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 03:32:39,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-30 03:32:42,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 475 [2023-08-30 03:32:42,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 125 transitions, 1174 flow. Second operand has 9 states, 9 states have (on average 167.22222222222223) internal successors, (1505), 9 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:42,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:42,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 475 [2023-08-30 03:32:42,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:32:45,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:32:46,976 INFO L130 PetriNetUnfolder]: 256/730 cut-off events. [2023-08-30 03:32:46,976 INFO L131 PetriNetUnfolder]: For 2278/2280 co-relation queries the response was YES. [2023-08-30 03:32:46,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3137 conditions, 730 events. 256/730 cut-off events. For 2278/2280 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4633 event pairs, 38 based on Foata normal form. 3/725 useless extension candidates. Maximal degree in co-relation 3097. Up to 240 conditions per place. [2023-08-30 03:32:46,980 INFO L137 encePairwiseOnDemand]: 462/475 looper letters, 114 selfloop transitions, 60 changer transitions 0/179 dead transitions. [2023-08-30 03:32:46,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 179 transitions, 1908 flow [2023-08-30 03:32:46,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 03:32:46,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 03:32:46,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1384 transitions. [2023-08-30 03:32:46,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3642105263157895 [2023-08-30 03:32:46,982 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1384 transitions. [2023-08-30 03:32:46,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1384 transitions. [2023-08-30 03:32:46,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:32:46,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1384 transitions. [2023-08-30 03:32:46,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:46,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 475.0) internal successors, (4275), 9 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:46,985 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 475.0) internal successors, (4275), 9 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:46,986 INFO L175 Difference]: Start difference. First operand has 129 places, 125 transitions, 1174 flow. Second operand 8 states and 1384 transitions. [2023-08-30 03:32:46,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 179 transitions, 1908 flow [2023-08-30 03:32:46,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 179 transitions, 1816 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-08-30 03:32:46,995 INFO L231 Difference]: Finished difference. Result has 130 places, 141 transitions, 1493 flow [2023-08-30 03:32:46,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1493, PETRI_PLACES=130, PETRI_TRANSITIONS=141} [2023-08-30 03:32:46,996 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 44 predicate places. [2023-08-30 03:32:46,996 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 141 transitions, 1493 flow [2023-08-30 03:32:46,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 167.22222222222223) internal successors, (1505), 9 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:46,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:32:46,997 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] [2023-08-30 03:32:47,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-08-30 03:32:47,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:47,213 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)] === [2023-08-30 03:32:47,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:32:47,214 INFO L85 PathProgramCache]: Analyzing trace with hash -548233721, now seen corresponding path program 8 times [2023-08-30 03:32:47,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:32:47,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355838063] [2023-08-30 03:32:47,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 03:32:47,215 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:32:47,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:32:47,216 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:32:47,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-08-30 03:32:47,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 03:32:47,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:32:47,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-30 03:32:47,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:32:47,827 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 03:32:47,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-30 03:32:47,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-30 03:32:47,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:32:47,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-30 03:32:48,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:32:48,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-30 03:32:48,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:32:48,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:32:48,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:32:48,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:32:48,525 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:32:48,526 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:32:48,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-30 03:32:48,769 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 03:32:48,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-30 03:32:49,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-30 03:32:49,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-30 03:32:49,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-08-30 03:32:49,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:32:49,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:32:49,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:32:49,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355838063] [2023-08-30 03:32:49,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355838063] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:32:49,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:32:49,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 03:32:49,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386571323] [2023-08-30 03:32:49,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:32:49,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 03:32:49,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:32:49,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 03:32:49,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-30 03:32:55,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-30 03:32:55,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 141 transitions, 1493 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:32:55,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:32:55,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-30 03:32:55,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:05,124 INFO L130 PetriNetUnfolder]: 274/767 cut-off events. [2023-08-30 03:33:05,124 INFO L131 PetriNetUnfolder]: For 3438/3438 co-relation queries the response was YES. [2023-08-30 03:33:05,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3544 conditions, 767 events. 274/767 cut-off events. For 3438/3438 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4858 event pairs, 93 based on Foata normal form. 0/761 useless extension candidates. Maximal degree in co-relation 3501. Up to 558 conditions per place. [2023-08-30 03:33:05,128 INFO L137 encePairwiseOnDemand]: 458/475 looper letters, 146 selfloop transitions, 39 changer transitions 0/187 dead transitions. [2023-08-30 03:33:05,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 187 transitions, 2200 flow [2023-08-30 03:33:05,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 03:33:05,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 03:33:05,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2179 transitions. [2023-08-30 03:33:05,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3528744939271255 [2023-08-30 03:33:05,131 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2179 transitions. [2023-08-30 03:33:05,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2179 transitions. [2023-08-30 03:33:05,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:05,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2179 transitions. [2023-08-30 03:33:05,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 167.6153846153846) internal successors, (2179), 13 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:05,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:05,138 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:05,138 INFO L175 Difference]: Start difference. First operand has 130 places, 141 transitions, 1493 flow. Second operand 13 states and 2179 transitions. [2023-08-30 03:33:05,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 187 transitions, 2200 flow [2023-08-30 03:33:05,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 187 transitions, 2155 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-30 03:33:05,154 INFO L231 Difference]: Finished difference. Result has 142 places, 152 transitions, 1701 flow [2023-08-30 03:33:05,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1701, PETRI_PLACES=142, PETRI_TRANSITIONS=152} [2023-08-30 03:33:05,155 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 56 predicate places. [2023-08-30 03:33:05,155 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 152 transitions, 1701 flow [2023-08-30 03:33:05,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:05,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:05,156 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] [2023-08-30 03:33:05,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-08-30 03:33:05,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:33:05,369 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:33:05,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:05,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1585015007, now seen corresponding path program 3 times [2023-08-30 03:33:05,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:05,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354220408] [2023-08-30 03:33:05,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 03:33:05,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:33:05,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:05,371 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:33:05,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-08-30 03:33:05,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 03:33:05,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:33:05,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-30 03:33:05,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:33:05,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 03:33:06,017 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:33:06,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-30 03:33:06,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:06,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:06,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:06,113 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:33:06,114 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:33:06,114 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 [2023-08-30 03:33:06,166 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 39 treesize of output 35 [2023-08-30 03:33:06,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 73 [2023-08-30 03:33:06,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:33:06,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:33:06,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:33:06,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354220408] [2023-08-30 03:33:06,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354220408] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:33:06,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:33:06,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 03:33:06,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983974910] [2023-08-30 03:33:06,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:33:06,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 03:33:06,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:33:06,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 03:33:06,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-30 03:33:08,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 475 [2023-08-30 03:33:08,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 152 transitions, 1701 flow. Second operand has 9 states, 9 states have (on average 173.11111111111111) internal successors, (1558), 9 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:08,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:33:08,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 475 [2023-08-30 03:33:08,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:11,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:33:13,493 INFO L130 PetriNetUnfolder]: 226/707 cut-off events. [2023-08-30 03:33:13,494 INFO L131 PetriNetUnfolder]: For 3695/3707 co-relation queries the response was YES. [2023-08-30 03:33:13,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3412 conditions, 707 events. 226/707 cut-off events. For 3695/3707 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4698 event pairs, 82 based on Foata normal form. 14/712 useless extension candidates. Maximal degree in co-relation 3365. Up to 315 conditions per place. [2023-08-30 03:33:13,497 INFO L137 encePairwiseOnDemand]: 464/475 looper letters, 119 selfloop transitions, 60 changer transitions 0/192 dead transitions. [2023-08-30 03:33:13,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 192 transitions, 2390 flow [2023-08-30 03:33:13,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 03:33:13,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 03:33:13,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1427 transitions. [2023-08-30 03:33:13,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3755263157894737 [2023-08-30 03:33:13,499 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1427 transitions. [2023-08-30 03:33:13,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1427 transitions. [2023-08-30 03:33:13,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:13,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1427 transitions. [2023-08-30 03:33:13,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 178.375) internal successors, (1427), 8 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:13,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 475.0) internal successors, (4275), 9 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:13,503 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 475.0) internal successors, (4275), 9 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:13,503 INFO L175 Difference]: Start difference. First operand has 142 places, 152 transitions, 1701 flow. Second operand 8 states and 1427 transitions. [2023-08-30 03:33:13,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 192 transitions, 2390 flow [2023-08-30 03:33:13,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 192 transitions, 2272 flow, removed 21 selfloop flow, removed 7 redundant places. [2023-08-30 03:33:13,522 INFO L231 Difference]: Finished difference. Result has 144 places, 157 transitions, 1816 flow [2023-08-30 03:33:13,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1816, PETRI_PLACES=144, PETRI_TRANSITIONS=157} [2023-08-30 03:33:13,522 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 58 predicate places. [2023-08-30 03:33:13,523 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 157 transitions, 1816 flow [2023-08-30 03:33:13,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 173.11111111111111) internal successors, (1558), 9 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:13,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:13,523 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] [2023-08-30 03:33:13,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-08-30 03:33:13,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:33:13,740 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)] === [2023-08-30 03:33:13,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:13,741 INFO L85 PathProgramCache]: Analyzing trace with hash -389644943, now seen corresponding path program 9 times [2023-08-30 03:33:13,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:13,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1975557442] [2023-08-30 03:33:13,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 03:33:13,742 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:33:13,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:13,743 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) [2023-08-30 03:33:13,744 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 [2023-08-30 03:33:14,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 03:33:14,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:33:14,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-30 03:33:14,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:33:14,318 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 03:33:14,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-30 03:33:14,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-30 03:33:14,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:14,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-30 03:33:14,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:14,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-30 03:33:14,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:33:15,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:15,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:15,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:15,230 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:33:15,231 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:33:15,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-30 03:33:15,390 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 03:33:15,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-30 03:33:15,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-30 03:33:15,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-08-30 03:33:15,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-30 03:33:15,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:33:15,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:33:15,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:33:15,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1975557442] [2023-08-30 03:33:15,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1975557442] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:33:15,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:33:15,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 03:33:15,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478257259] [2023-08-30 03:33:15,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:33:15,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 03:33:15,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:33:15,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 03:33:15,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-30 03:33:22,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-30 03:33:22,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 157 transitions, 1816 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:22,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:33:22,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-30 03:33:22,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:31,131 INFO L130 PetriNetUnfolder]: 293/828 cut-off events. [2023-08-30 03:33:31,131 INFO L131 PetriNetUnfolder]: For 4792/4792 co-relation queries the response was YES. [2023-08-30 03:33:31,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4082 conditions, 828 events. 293/828 cut-off events. For 4792/4792 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5439 event pairs, 126 based on Foata normal form. 0/821 useless extension candidates. Maximal degree in co-relation 4033. Up to 672 conditions per place. [2023-08-30 03:33:31,135 INFO L137 encePairwiseOnDemand]: 459/475 looper letters, 169 selfloop transitions, 34 changer transitions 0/205 dead transitions. [2023-08-30 03:33:31,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 205 transitions, 2651 flow [2023-08-30 03:33:31,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 03:33:31,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 03:33:31,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2175 transitions. [2023-08-30 03:33:31,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522267206477733 [2023-08-30 03:33:31,139 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2175 transitions. [2023-08-30 03:33:31,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2175 transitions. [2023-08-30 03:33:31,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:31,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2175 transitions. [2023-08-30 03:33:31,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 167.30769230769232) internal successors, (2175), 13 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:31,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:31,146 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:31,146 INFO L175 Difference]: Start difference. First operand has 144 places, 157 transitions, 1816 flow. Second operand 13 states and 2175 transitions. [2023-08-30 03:33:31,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 205 transitions, 2651 flow [2023-08-30 03:33:31,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 205 transitions, 2441 flow, removed 37 selfloop flow, removed 6 redundant places. [2023-08-30 03:33:31,167 INFO L231 Difference]: Finished difference. Result has 155 places, 173 transitions, 1967 flow [2023-08-30 03:33:31,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1967, PETRI_PLACES=155, PETRI_TRANSITIONS=173} [2023-08-30 03:33:31,168 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 69 predicate places. [2023-08-30 03:33:31,168 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 173 transitions, 1967 flow [2023-08-30 03:33:31,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:31,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:31,169 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] [2023-08-30 03:33:31,185 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 [2023-08-30 03:33:31,385 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 [2023-08-30 03:33:31,385 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)] === [2023-08-30 03:33:31,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:31,385 INFO L85 PathProgramCache]: Analyzing trace with hash -586448953, now seen corresponding path program 10 times [2023-08-30 03:33:31,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:31,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405839475] [2023-08-30 03:33:31,386 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 03:33:31,386 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:33:31,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:31,387 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) [2023-08-30 03:33:31,390 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 [2023-08-30 03:33:31,957 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 03:33:31,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:33:31,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-30 03:33:31,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:33:32,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-30 03:33:32,041 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 03:33:32,041 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 [2023-08-30 03:33:32,101 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 03:33:32,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-30 03:33:32,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:32,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-30 03:33:32,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:33:33,034 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 03:33:33,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-30 03:33:33,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:33,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:33,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:33,134 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:33:33,135 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:33:33,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-30 03:33:33,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-08-30 03:33:33,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-30 03:33:33,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-30 03:33:33,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:33:33,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:33:33,777 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:33:33,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405839475] [2023-08-30 03:33:33,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405839475] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:33:33,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:33:33,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 03:33:33,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852133483] [2023-08-30 03:33:33,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:33:33,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 03:33:33,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:33:33,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 03:33:33,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-30 03:33:39,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-30 03:33:39,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 173 transitions, 1967 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:39,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:33:39,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-30 03:33:39,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:33:47,116 INFO L130 PetriNetUnfolder]: 301/858 cut-off events. [2023-08-30 03:33:47,117 INFO L131 PetriNetUnfolder]: For 4966/4966 co-relation queries the response was YES. [2023-08-30 03:33:47,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4271 conditions, 858 events. 301/858 cut-off events. For 4966/4966 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5738 event pairs, 140 based on Foata normal form. 0/851 useless extension candidates. Maximal degree in co-relation 4218. Up to 722 conditions per place. [2023-08-30 03:33:47,121 INFO L137 encePairwiseOnDemand]: 460/475 looper letters, 178 selfloop transitions, 28 changer transitions 0/208 dead transitions. [2023-08-30 03:33:47,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 208 transitions, 2651 flow [2023-08-30 03:33:47,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 03:33:47,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 03:33:47,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2168 transitions. [2023-08-30 03:33:47,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35109311740890686 [2023-08-30 03:33:47,123 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2168 transitions. [2023-08-30 03:33:47,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2168 transitions. [2023-08-30 03:33:47,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:33:47,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2168 transitions. [2023-08-30 03:33:47,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 166.76923076923077) internal successors, (2168), 13 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:47,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:47,130 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:47,131 INFO L175 Difference]: Start difference. First operand has 155 places, 173 transitions, 1967 flow. Second operand 13 states and 2168 transitions. [2023-08-30 03:33:47,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 208 transitions, 2651 flow [2023-08-30 03:33:47,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 208 transitions, 2563 flow, removed 22 selfloop flow, removed 7 redundant places. [2023-08-30 03:33:47,156 INFO L231 Difference]: Finished difference. Result has 165 places, 182 transitions, 2083 flow [2023-08-30 03:33:47,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=1880, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2083, PETRI_PLACES=165, PETRI_TRANSITIONS=182} [2023-08-30 03:33:47,157 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 79 predicate places. [2023-08-30 03:33:47,157 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 182 transitions, 2083 flow [2023-08-30 03:33:47,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:47,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:33:47,158 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] [2023-08-30 03:33:47,175 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 (35)] Ended with exit code 0 [2023-08-30 03:33:47,373 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 [2023-08-30 03:33:47,373 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)] === [2023-08-30 03:33:47,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:33:47,373 INFO L85 PathProgramCache]: Analyzing trace with hash -734065619, now seen corresponding path program 11 times [2023-08-30 03:33:47,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:33:47,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466940584] [2023-08-30 03:33:47,374 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 03:33:47,374 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:33:47,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:33:47,375 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) [2023-08-30 03:33:47,376 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 (36)] Waiting until timeout for monitored process [2023-08-30 03:33:47,870 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 03:33:47,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:33:47,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 78 conjunts are in the unsatisfiable core [2023-08-30 03:33:47,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:33:47,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-30 03:33:47,969 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 03:33:47,970 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 [2023-08-30 03:33:48,058 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 03:33:48,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-30 03:33:48,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:48,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-30 03:33:48,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:33:48,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:48,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:48,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:33:48,986 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:33:48,986 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:33:48,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-30 03:33:49,238 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 03:33:49,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-30 03:33:49,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-30 03:33:49,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-08-30 03:33:49,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-30 03:33:49,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:33:49,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:33:49,713 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:33:49,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466940584] [2023-08-30 03:33:49,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466940584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:33:49,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:33:49,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 03:33:49,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889446324] [2023-08-30 03:33:49,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:33:49,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 03:33:49,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:33:49,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 03:33:49,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-30 03:33:55,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-08-30 03:33:55,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 182 transitions, 2083 flow. Second operand has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:33:55,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:33:55,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-08-30 03:33:55,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:03,746 INFO L130 PetriNetUnfolder]: 315/907 cut-off events. [2023-08-30 03:34:03,746 INFO L131 PetriNetUnfolder]: For 5788/5788 co-relation queries the response was YES. [2023-08-30 03:34:03,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4581 conditions, 907 events. 315/907 cut-off events. For 5788/5788 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6200 event pairs, 136 based on Foata normal form. 0/900 useless extension candidates. Maximal degree in co-relation 4523. Up to 709 conditions per place. [2023-08-30 03:34:03,750 INFO L137 encePairwiseOnDemand]: 459/475 looper letters, 179 selfloop transitions, 42 changer transitions 0/223 dead transitions. [2023-08-30 03:34:03,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 223 transitions, 2875 flow [2023-08-30 03:34:03,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 03:34:03,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 03:34:03,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2137 transitions. [2023-08-30 03:34:03,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34607287449392715 [2023-08-30 03:34:03,753 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2137 transitions. [2023-08-30 03:34:03,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2137 transitions. [2023-08-30 03:34:03,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:03,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2137 transitions. [2023-08-30 03:34:03,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 164.3846153846154) internal successors, (2137), 13 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:03,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:03,758 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:03,758 INFO L175 Difference]: Start difference. First operand has 165 places, 182 transitions, 2083 flow. Second operand 13 states and 2137 transitions. [2023-08-30 03:34:03,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 223 transitions, 2875 flow [2023-08-30 03:34:03,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 223 transitions, 2792 flow, removed 22 selfloop flow, removed 7 redundant places. [2023-08-30 03:34:03,778 INFO L231 Difference]: Finished difference. Result has 173 places, 195 transitions, 2312 flow [2023-08-30 03:34:03,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2312, PETRI_PLACES=173, PETRI_TRANSITIONS=195} [2023-08-30 03:34:03,779 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 87 predicate places. [2023-08-30 03:34:03,779 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 195 transitions, 2312 flow [2023-08-30 03:34:03,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:03,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:03,780 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] [2023-08-30 03:34:03,793 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 [2023-08-30 03:34:03,980 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 [2023-08-30 03:34:03,980 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)] === [2023-08-30 03:34:03,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:03,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1454659907, now seen corresponding path program 12 times [2023-08-30 03:34:03,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:03,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514038549] [2023-08-30 03:34:03,981 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 03:34:03,982 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 [2023-08-30 03:34:03,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:03,982 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) [2023-08-30 03:34:03,988 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 [2023-08-30 03:34:04,503 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-30 03:34:04,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:34:04,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-30 03:34:04,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:04,585 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 03:34:04,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-30 03:34:04,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-30 03:34:04,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:04,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-30 03:34:04,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:04,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-30 03:34:05,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:34:05,316 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 03:34:05,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-30 03:34:05,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:05,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:05,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:05,507 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:34:05,507 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:34:05,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-30 03:34:05,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-08-30 03:34:05,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-30 03:34:05,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-30 03:34:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:34:06,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:06,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:06,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514038549] [2023-08-30 03:34:06,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514038549] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:06,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:06,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 03:34:06,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007508936] [2023-08-30 03:34:06,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:06,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 03:34:06,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:06,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 03:34:06,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-30 03:34:11,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-30 03:34:11,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 195 transitions, 2312 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:11,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:11,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-30 03:34:11,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:19,169 INFO L130 PetriNetUnfolder]: 333/962 cut-off events. [2023-08-30 03:34:19,170 INFO L131 PetriNetUnfolder]: For 6800/6800 co-relation queries the response was YES. [2023-08-30 03:34:19,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4978 conditions, 962 events. 333/962 cut-off events. For 6800/6800 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6731 event pairs, 162 based on Foata normal form. 0/955 useless extension candidates. Maximal degree in co-relation 4917. Up to 825 conditions per place. [2023-08-30 03:34:19,174 INFO L137 encePairwiseOnDemand]: 460/475 looper letters, 201 selfloop transitions, 33 changer transitions 0/236 dead transitions. [2023-08-30 03:34:19,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 236 transitions, 3147 flow [2023-08-30 03:34:19,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 03:34:19,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 03:34:19,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2493 transitions. [2023-08-30 03:34:19,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34989473684210526 [2023-08-30 03:34:19,178 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2493 transitions. [2023-08-30 03:34:19,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2493 transitions. [2023-08-30 03:34:19,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:19,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2493 transitions. [2023-08-30 03:34:19,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 166.2) internal successors, (2493), 15 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:19,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 475.0) internal successors, (7600), 16 states have internal predecessors, (7600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:19,186 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 475.0) internal successors, (7600), 16 states have internal predecessors, (7600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:19,186 INFO L175 Difference]: Start difference. First operand has 173 places, 195 transitions, 2312 flow. Second operand 15 states and 2493 transitions. [2023-08-30 03:34:19,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 236 transitions, 3147 flow [2023-08-30 03:34:19,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 236 transitions, 3032 flow, removed 37 selfloop flow, removed 7 redundant places. [2023-08-30 03:34:19,221 INFO L231 Difference]: Finished difference. Result has 187 places, 208 transitions, 2489 flow [2023-08-30 03:34:19,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2489, PETRI_PLACES=187, PETRI_TRANSITIONS=208} [2023-08-30 03:34:19,222 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 101 predicate places. [2023-08-30 03:34:19,222 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 208 transitions, 2489 flow [2023-08-30 03:34:19,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:19,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:19,223 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] [2023-08-30 03:34:19,241 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 [2023-08-30 03:34:19,439 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 [2023-08-30 03:34:19,440 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)] === [2023-08-30 03:34:19,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:19,440 INFO L85 PathProgramCache]: Analyzing trace with hash -354902209, now seen corresponding path program 13 times [2023-08-30 03:34:19,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:19,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113459154] [2023-08-30 03:34:19,441 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 03:34:19,441 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:34:19,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:19,442 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) [2023-08-30 03:34:19,443 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 [2023-08-30 03:34:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:34:20,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-30 03:34:20,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:20,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-30 03:34:20,161 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 03:34:20,161 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 [2023-08-30 03:34:20,241 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 03:34:20,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-30 03:34:20,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:20,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-30 03:34:20,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:34:21,077 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 03:34:21,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-30 03:34:21,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:21,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:21,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:21,182 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:34:21,182 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:34:21,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-30 03:34:21,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-08-30 03:34:21,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-30 03:34:21,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-30 03:34:21,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:34:21,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:21,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:21,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113459154] [2023-08-30 03:34:21,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [113459154] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:21,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:21,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 03:34:21,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510014380] [2023-08-30 03:34:21,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:21,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 03:34:21,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:21,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 03:34:21,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-30 03:34:30,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-30 03:34:30,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 208 transitions, 2489 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:30,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:30,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-30 03:34:30,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:38,241 INFO L130 PetriNetUnfolder]: 351/1016 cut-off events. [2023-08-30 03:34:38,242 INFO L131 PetriNetUnfolder]: For 7765/7765 co-relation queries the response was YES. [2023-08-30 03:34:38,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5337 conditions, 1016 events. 351/1016 cut-off events. For 7765/7765 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7290 event pairs, 170 based on Foata normal form. 0/1009 useless extension candidates. Maximal degree in co-relation 5268. Up to 878 conditions per place. [2023-08-30 03:34:38,247 INFO L137 encePairwiseOnDemand]: 460/475 looper letters, 211 selfloop transitions, 32 changer transitions 0/245 dead transitions. [2023-08-30 03:34:38,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 245 transitions, 3314 flow [2023-08-30 03:34:38,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 03:34:38,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 03:34:38,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2332 transitions. [2023-08-30 03:34:38,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506766917293233 [2023-08-30 03:34:38,250 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2332 transitions. [2023-08-30 03:34:38,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2332 transitions. [2023-08-30 03:34:38,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:38,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2332 transitions. [2023-08-30 03:34:38,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 166.57142857142858) internal successors, (2332), 14 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:38,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 475.0) internal successors, (7125), 15 states have internal predecessors, (7125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:38,257 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 475.0) internal successors, (7125), 15 states have internal predecessors, (7125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:38,258 INFO L175 Difference]: Start difference. First operand has 187 places, 208 transitions, 2489 flow. Second operand 14 states and 2332 transitions. [2023-08-30 03:34:38,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 245 transitions, 3314 flow [2023-08-30 03:34:38,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 245 transitions, 3204 flow, removed 37 selfloop flow, removed 6 redundant places. [2023-08-30 03:34:38,295 INFO L231 Difference]: Finished difference. Result has 199 places, 216 transitions, 2613 flow [2023-08-30 03:34:38,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=2383, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2613, PETRI_PLACES=199, PETRI_TRANSITIONS=216} [2023-08-30 03:34:38,296 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 113 predicate places. [2023-08-30 03:34:38,296 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 216 transitions, 2613 flow [2023-08-30 03:34:38,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:38,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:38,297 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] [2023-08-30 03:34:38,312 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 (38)] Forceful destruction successful, exit code 0 [2023-08-30 03:34:38,497 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 [2023-08-30 03:34:38,498 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)] === [2023-08-30 03:34:38,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:38,498 INFO L85 PathProgramCache]: Analyzing trace with hash -29564971, now seen corresponding path program 14 times [2023-08-30 03:34:38,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:38,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243994761] [2023-08-30 03:34:38,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 03:34:38,499 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:34:38,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:38,500 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) [2023-08-30 03:34:38,503 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 [2023-08-30 03:34:39,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 03:34:39,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:34:39,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 78 conjunts are in the unsatisfiable core [2023-08-30 03:34:39,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:39,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-30 03:34:39,084 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 03:34:39,084 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 [2023-08-30 03:34:39,136 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 03:34:39,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-30 03:34:39,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:39,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-30 03:34:39,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:34:39,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:39,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:39,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:39,927 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:34:39,927 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:34:39,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-30 03:34:40,012 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 03:34:40,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-30 03:34:40,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-08-30 03:34:40,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-30 03:34:40,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-30 03:34:40,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:34:40,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:40,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:40,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243994761] [2023-08-30 03:34:40,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243994761] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:40,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:40,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 03:34:40,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161078623] [2023-08-30 03:34:40,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:40,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 03:34:40,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:40,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 03:34:40,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-30 03:34:47,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-30 03:34:47,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 216 transitions, 2613 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:47,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:47,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-30 03:34:47,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:55,814 INFO L130 PetriNetUnfolder]: 361/1053 cut-off events. [2023-08-30 03:34:55,815 INFO L131 PetriNetUnfolder]: For 8746/8746 co-relation queries the response was YES. [2023-08-30 03:34:55,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5575 conditions, 1053 events. 361/1053 cut-off events. For 8746/8746 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7650 event pairs, 184 based on Foata normal form. 0/1046 useless extension candidates. Maximal degree in co-relation 5501. Up to 888 conditions per place. [2023-08-30 03:34:55,822 INFO L137 encePairwiseOnDemand]: 459/475 looper letters, 219 selfloop transitions, 39 changer transitions 0/260 dead transitions. [2023-08-30 03:34:55,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 260 transitions, 3556 flow [2023-08-30 03:34:55,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 03:34:55,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 03:34:55,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2339 transitions. [2023-08-30 03:34:55,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35172932330827067 [2023-08-30 03:34:55,824 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2339 transitions. [2023-08-30 03:34:55,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2339 transitions. [2023-08-30 03:34:55,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:55,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2339 transitions. [2023-08-30 03:34:55,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 167.07142857142858) internal successors, (2339), 14 states have internal predecessors, (2339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:55,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 475.0) internal successors, (7125), 15 states have internal predecessors, (7125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:55,830 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 475.0) internal successors, (7125), 15 states have internal predecessors, (7125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:55,830 INFO L175 Difference]: Start difference. First operand has 199 places, 216 transitions, 2613 flow. Second operand 14 states and 2339 transitions. [2023-08-30 03:34:55,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 260 transitions, 3556 flow [2023-08-30 03:34:55,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 260 transitions, 3433 flow, removed 37 selfloop flow, removed 8 redundant places. [2023-08-30 03:34:55,883 INFO L231 Difference]: Finished difference. Result has 209 places, 229 transitions, 2840 flow [2023-08-30 03:34:55,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=2496, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2840, PETRI_PLACES=209, PETRI_TRANSITIONS=229} [2023-08-30 03:34:55,884 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 123 predicate places. [2023-08-30 03:34:55,884 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 229 transitions, 2840 flow [2023-08-30 03:34:55,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:55,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:55,885 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] [2023-08-30 03:34:55,898 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 (39)] Forceful destruction successful, exit code 0 [2023-08-30 03:34:56,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:34:56,085 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:34:56,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:56,086 INFO L85 PathProgramCache]: Analyzing trace with hash -848882735, now seen corresponding path program 15 times [2023-08-30 03:34:56,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:56,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123402210] [2023-08-30 03:34:56,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 03:34:56,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:34:56,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:56,087 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:34:56,090 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 (40)] Waiting until timeout for monitored process [2023-08-30 03:34:56,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 03:34:56,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:34:56,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-30 03:34:56,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:56,681 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 03:34:56,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-30 03:34:56,702 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 [2023-08-30 03:34:56,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:56,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-30 03:34:56,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:56,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-30 03:34:57,396 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 03:34:57,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-30 03:34:57,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:34:57,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:57,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:57,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:57,734 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:34:57,735 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:34:57,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-30 03:34:58,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-08-30 03:34:58,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-30 03:34:58,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-30 03:34:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:34:58,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:58,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:58,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123402210] [2023-08-30 03:34:58,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123402210] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:58,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:58,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 03:34:58,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93894049] [2023-08-30 03:34:58,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:58,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 03:34:58,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:58,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 03:34:58,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-30 03:35:04,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-30 03:35:04,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 229 transitions, 2840 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:35:04,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:35:04,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-30 03:35:04,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:35:13,562 INFO L130 PetriNetUnfolder]: 379/1112 cut-off events. [2023-08-30 03:35:13,562 INFO L131 PetriNetUnfolder]: For 10236/10236 co-relation queries the response was YES. [2023-08-30 03:35:13,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6009 conditions, 1112 events. 379/1112 cut-off events. For 10236/10236 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 8227 event pairs, 217 based on Foata normal form. 0/1105 useless extension candidates. Maximal degree in co-relation 5930. Up to 996 conditions per place. [2023-08-30 03:35:13,569 INFO L137 encePairwiseOnDemand]: 461/475 looper letters, 238 selfloop transitions, 22 changer transitions 0/262 dead transitions. [2023-08-30 03:35:13,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 262 transitions, 3709 flow [2023-08-30 03:35:13,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 03:35:13,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 03:35:13,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2158 transitions. [2023-08-30 03:35:13,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494736842105263 [2023-08-30 03:35:13,572 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2158 transitions. [2023-08-30 03:35:13,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2158 transitions. [2023-08-30 03:35:13,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:35:13,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2158 transitions. [2023-08-30 03:35:13,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:35:13,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:35:13,579 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:35:13,579 INFO L175 Difference]: Start difference. First operand has 209 places, 229 transitions, 2840 flow. Second operand 13 states and 2158 transitions. [2023-08-30 03:35:13,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 262 transitions, 3709 flow [2023-08-30 03:35:13,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 262 transitions, 3548 flow, removed 51 selfloop flow, removed 8 redundant places. [2023-08-30 03:35:13,631 INFO L231 Difference]: Finished difference. Result has 221 places, 240 transitions, 2944 flow [2023-08-30 03:35:13,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=2685, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2944, PETRI_PLACES=221, PETRI_TRANSITIONS=240} [2023-08-30 03:35:13,631 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 135 predicate places. [2023-08-30 03:35:13,632 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 240 transitions, 2944 flow [2023-08-30 03:35:13,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:35:13,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:35:13,632 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] [2023-08-30 03:35:13,645 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 (40)] Forceful destruction successful, exit code 0 [2023-08-30 03:35:13,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:35:13,833 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:35:13,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:35:13,833 INFO L85 PathProgramCache]: Analyzing trace with hash -863025157, now seen corresponding path program 16 times [2023-08-30 03:35:13,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:35:13,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534955645] [2023-08-30 03:35:13,837 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 03:35:13,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:35:13,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:35:13,838 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:35:13,840 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 (41)] Waiting until timeout for monitored process [2023-08-30 03:35:14,400 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 03:35:14,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:35:14,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-30 03:35:14,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:35:14,475 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 03:35:14,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-30 03:35:14,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-30 03:35:14,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:35:14,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-30 03:35:14,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:35:14,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-08-30 03:35:15,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:35:15,343 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 03:35:15,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-30 03:35:15,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:35:15,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:35:15,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:35:15,447 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:35:15,447 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:35:15,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-30 03:35:15,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-30 03:35:15,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-30 03:35:15,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-08-30 03:35:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:35:16,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:35:16,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:35:16,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534955645] [2023-08-30 03:35:16,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534955645] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:35:16,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:35:16,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 03:35:16,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102779366] [2023-08-30 03:35:16,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:35:16,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 03:35:16,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:35:16,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 03:35:16,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-30 03:35:23,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-30 03:35:23,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 240 transitions, 2944 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:35:23,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:35:23,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-30 03:35:23,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15