./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_15-list_entry_nr.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/goblint-regression/06-symbeq_15-list_entry_nr.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 23d465ba9caf460ed15aca3aec6b262b1ee2c4f0003cc0e5fbc446c20cfe164a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 00:08:21,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:08:21,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:08:21,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:08:21,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:08:21,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:08:21,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:08:21,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:08:21,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:08:21,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:08:21,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:08:21,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:08:21,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:08:21,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:08:21,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:08:21,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:08:21,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:08:21,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:08:21,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:08:21,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:08:21,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:08:21,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:08:21,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:08:21,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:08:21,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:08:21,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:08:21,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:08:21,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:08:21,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:08:21,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:08:21,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:08:21,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:08:21,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:08:21,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:08:21,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:08:21,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:08:21,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:08:21,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:08:21,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:08:21,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:08:21,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:08:21,835 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:08:21,867 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:08:21,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:08:21,868 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:08:21,868 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:08:21,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:08:21,869 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:08:21,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:08:21,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:08:21,870 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:08:21,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:08:21,871 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:08:21,871 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:08:21,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:08:21,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:08:21,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:08:21,872 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:08:21,872 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:08:21,873 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:08:21,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:08:21,873 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:08:21,873 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:08:21,873 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:08:21,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:08:21,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:08:21,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:08:21,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:08:21,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:08:21,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:08:21,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:08:21,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:08:21,875 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:08:21,875 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:08:21,876 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:08:21,876 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:08:21,876 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23d465ba9caf460ed15aca3aec6b262b1ee2c4f0003cc0e5fbc446c20cfe164a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:08:22,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:08:22,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:08:22,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:08:22,176 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:08:22,176 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:08:22,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_15-list_entry_nr.i [2023-09-01 00:08:23,369 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:08:23,689 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:08:23,689 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_15-list_entry_nr.i [2023-09-01 00:08:23,715 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e1f0139/ce3e2d6628434aa694a0ec1fbcee61f8/FLAGff496a6ef [2023-09-01 00:08:23,730 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e1f0139/ce3e2d6628434aa694a0ec1fbcee61f8 [2023-09-01 00:08:23,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:08:23,733 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:08:23,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:08:23,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:08:23,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:08:23,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:08:23" (1/1) ... [2023-09-01 00:08:23,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63d2a809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:23, skipping insertion in model container [2023-09-01 00:08:23,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:08:23" (1/1) ... [2023-09-01 00:08:23,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:08:23,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:08:24,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:08:24,252 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) [2023-09-01 00:08:24,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6019e5d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:24, skipping insertion in model container [2023-09-01 00:08:24,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:08:24,255 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-09-01 00:08:24,257 INFO L158 Benchmark]: Toolchain (without parser) took 523.18ms. Allocated memory is still 77.6MB. Free memory was 53.2MB in the beginning and 38.2MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-09-01 00:08:24,258 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory is still 38.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:08:24,258 INFO L158 Benchmark]: CACSL2BoogieTranslator took 521.26ms. Allocated memory is still 77.6MB. Free memory was 52.9MB in the beginning and 38.2MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-09-01 00:08:24,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory is still 38.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 521.26ms. Allocated memory is still 77.6MB. Free memory was 52.9MB in the beginning and 38.2MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1233]: 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/goblint-regression/06-symbeq_15-list_entry_nr.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 23d465ba9caf460ed15aca3aec6b262b1ee2c4f0003cc0e5fbc446c20cfe164a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 00:08:26,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:08:26,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:08:26,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:08:26,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:08:26,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:08:26,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:08:26,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:08:26,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:08:26,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:08:26,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:08:26,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:08:26,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:08:26,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:08:26,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:08:26,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:08:26,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:08:26,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:08:26,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:08:26,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:08:26,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:08:26,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:08:26,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:08:26,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:08:26,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:08:26,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:08:26,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:08:26,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:08:26,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:08:26,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:08:26,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:08:26,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:08:26,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:08:26,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:08:26,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:08:26,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:08:26,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:08:26,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:08:26,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:08:26,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:08:26,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:08:26,150 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-09-01 00:08:26,182 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:08:26,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:08:26,184 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:08:26,184 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:08:26,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:08:26,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:08:26,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:08:26,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:08:26,186 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:08:26,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:08:26,187 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:08:26,187 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:08:26,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:08:26,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:08:26,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:08:26,188 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:08:26,188 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:08:26,188 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:08:26,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:08:26,189 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:08:26,189 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-09-01 00:08:26,189 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-09-01 00:08:26,189 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:08:26,190 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:08:26,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:08:26,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:08:26,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:08:26,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:08:26,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:08:26,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:08:26,191 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-09-01 00:08:26,191 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-09-01 00:08:26,192 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:08:26,192 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:08:26,192 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:08:26,192 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-09-01 00:08:26,192 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:08:26,192 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23d465ba9caf460ed15aca3aec6b262b1ee2c4f0003cc0e5fbc446c20cfe164a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:08:26,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:08:26,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:08:26,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:08:26,550 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:08:26,550 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:08:26,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_15-list_entry_nr.i [2023-09-01 00:08:27,815 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:08:28,136 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:08:28,137 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_15-list_entry_nr.i [2023-09-01 00:08:28,155 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8733c5cd8/5d6928cb593143179c6a7b0fca798ca6/FLAGf80188899 [2023-09-01 00:08:28,172 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8733c5cd8/5d6928cb593143179c6a7b0fca798ca6 [2023-09-01 00:08:28,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:08:28,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:08:28,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:08:28,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:08:28,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:08:28,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:08:28" (1/1) ... [2023-09-01 00:08:28,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ff886a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:28, skipping insertion in model container [2023-09-01 00:08:28,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:08:28" (1/1) ... [2023-09-01 00:08:28,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:08:28,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:08:28,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:08:28,758 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-09-01 00:08:28,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:08:28,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:08:28,801 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:08:28,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:08:28,902 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:08:28,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:28 WrapperNode [2023-09-01 00:08:28,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:08:28,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:08:28,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:08:28,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:08:28,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:28" (1/1) ... [2023-09-01 00:08:28,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:28" (1/1) ... [2023-09-01 00:08:28,948 INFO L138 Inliner]: procedures = 366, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 53 [2023-09-01 00:08:28,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:08:28,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:08:28,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:08:28,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:08:28,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:28" (1/1) ... [2023-09-01 00:08:28,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:28" (1/1) ... [2023-09-01 00:08:28,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:28" (1/1) ... [2023-09-01 00:08:28,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:28" (1/1) ... [2023-09-01 00:08:28,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:28" (1/1) ... [2023-09-01 00:08:28,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:28" (1/1) ... [2023-09-01 00:08:28,971 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:28" (1/1) ... [2023-09-01 00:08:28,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:28" (1/1) ... [2023-09-01 00:08:28,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:08:28,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:08:28,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:08:28,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:08:28,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:28" (1/1) ... [2023-09-01 00:08:28,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:08:29,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:08:29,021 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) [2023-09-01 00:08:29,023 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 [2023-09-01 00:08:29,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-09-01 00:08:29,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:08:29,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:08:29,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-09-01 00:08:29,057 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:08:29,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 00:08:29,057 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:08:29,057 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:08:29,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:08:29,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:08:29,058 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 00:08:29,290 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:08:29,295 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:08:29,589 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:08:29,598 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:08:29,598 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 00:08:29,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:08:29 BoogieIcfgContainer [2023-09-01 00:08:29,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:08:29,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:08:29,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:08:29,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:08:29,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:08:28" (1/3) ... [2023-09-01 00:08:29,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c3a5a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:08:29, skipping insertion in model container [2023-09-01 00:08:29,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:28" (2/3) ... [2023-09-01 00:08:29,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c3a5a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:08:29, skipping insertion in model container [2023-09-01 00:08:29,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:08:29" (3/3) ... [2023-09-01 00:08:29,608 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_15-list_entry_nr.i [2023-09-01 00:08:29,624 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:08:29,625 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-09-01 00:08:29,625 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:08:29,711 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:08:29,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 72 transitions, 149 flow [2023-09-01 00:08:29,783 INFO L130 PetriNetUnfolder]: 0/71 cut-off events. [2023-09-01 00:08:29,783 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:08:29,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 71 events. 0/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 80 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-09-01 00:08:29,786 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 72 transitions, 149 flow [2023-09-01 00:08:29,791 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 71 transitions, 145 flow [2023-09-01 00:08:29,794 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:08:29,805 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 71 transitions, 145 flow [2023-09-01 00:08:29,812 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 71 transitions, 145 flow [2023-09-01 00:08:29,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 71 transitions, 145 flow [2023-09-01 00:08:29,856 INFO L130 PetriNetUnfolder]: 0/71 cut-off events. [2023-09-01 00:08:29,857 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:08:29,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 71 events. 0/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-09-01 00:08:29,858 INFO L119 LiptonReduction]: Number of co-enabled transitions 988 [2023-09-01 00:08:38,758 INFO L134 LiptonReduction]: Checked pairs total: 2011 [2023-09-01 00:08:38,758 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-09-01 00:08:38,769 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 00:08:38,775 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;@508328f7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:08:38,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-09-01 00:08:38,777 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 00:08:38,778 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:08:38,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:08:38,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 00:08:38,780 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-09-01 00:08:38,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:08:38,786 INFO L85 PathProgramCache]: Analyzing trace with hash 283, now seen corresponding path program 1 times [2023-09-01 00:08:38,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:08:38,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904660879] [2023-09-01 00:08:38,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:08:38,798 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 [2023-09-01 00:08:38,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:08:38,802 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) [2023-09-01 00:08:38,807 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 [2023-09-01 00:08:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:08:38,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-09-01 00:08:38,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:08:38,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:08:38,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:08:38,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:08:38,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904660879] [2023-09-01 00:08:38,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904660879] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:08:38,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:08:38,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 00:08:38,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625315241] [2023-09-01 00:08:38,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:08:38,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 00:08:38,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:08:38,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 00:08:38,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 00:08:38,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 160 [2023-09-01 00:08:38,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 51 flow. Second operand has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:08:38,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:08:38,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 160 [2023-09-01 00:08:38,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:08:38,995 INFO L130 PetriNetUnfolder]: 40/103 cut-off events. [2023-09-01 00:08:38,995 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:08:38,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 103 events. 40/103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 392 event pairs, 40 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 194. Up to 96 conditions per place. [2023-09-01 00:08:38,998 INFO L137 encePairwiseOnDemand]: 153/160 looper letters, 15 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-09-01 00:08:38,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 17 transitions, 67 flow [2023-09-01 00:08:38,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 00:08:39,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 00:08:39,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 164 transitions. [2023-09-01 00:08:39,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2023-09-01 00:08:39,016 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 164 transitions. [2023-09-01 00:08:39,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 164 transitions. [2023-09-01 00:08:39,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:08:39,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 164 transitions. [2023-09-01 00:08:39,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 82.0) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:08:39,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:08:39,041 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:08:39,043 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 51 flow. Second operand 2 states and 164 transitions. [2023-09-01 00:08:39,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 17 transitions, 67 flow [2023-09-01 00:08:39,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 66 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:08:39,047 INFO L231 Difference]: Finished difference. Result has 21 places, 17 transitions, 36 flow [2023-09-01 00:08:39,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=17} [2023-09-01 00:08:39,052 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -7 predicate places. [2023-09-01 00:08:39,052 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 17 transitions, 36 flow [2023-09-01 00:08:39,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:08:39,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:08:39,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 00:08:39,067 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 [2023-09-01 00:08:39,265 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 [2023-09-01 00:08:39,265 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-09-01 00:08:39,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:08:39,266 INFO L85 PathProgramCache]: Analyzing trace with hash 279299, now seen corresponding path program 1 times [2023-09-01 00:08:39,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:08:39,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209211795] [2023-09-01 00:08:39,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:08:39,267 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 [2023-09-01 00:08:39,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:08:39,270 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:08:39,272 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 [2023-09-01 00:08:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:08:39,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 00:08:39,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:08:39,449 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-09-01 00:08:39,450 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 1 case distinctions, treesize of input 9 treesize of output 19 [2023-09-01 00:08:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:08:39,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:08:39,466 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:08:39,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209211795] [2023-09-01 00:08:39,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209211795] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:08:39,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:08:39,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:08:39,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582158526] [2023-09-01 00:08:39,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:08:39,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:08:39,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:08:39,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:08:39,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:08:39,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 160 [2023-09-01 00:08:39,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:08:39,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:08:39,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 160 [2023-09-01 00:08:39,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:08:39,651 INFO L130 PetriNetUnfolder]: 35/90 cut-off events. [2023-09-01 00:08:39,652 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:08:39,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 90 events. 35/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 317 event pairs, 25 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 176. Up to 62 conditions per place. [2023-09-01 00:08:39,653 INFO L137 encePairwiseOnDemand]: 156/160 looper letters, 16 selfloop transitions, 3 changer transitions 0/21 dead transitions. [2023-09-01 00:08:39,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 21 transitions, 82 flow [2023-09-01 00:08:39,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:08:39,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:08:39,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-09-01 00:08:39,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-09-01 00:08:39,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-09-01 00:08:39,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-09-01 00:08:39,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:08:39,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-09-01 00:08:39,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:08:39,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:08:39,661 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:08:39,661 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 36 flow. Second operand 3 states and 224 transitions. [2023-09-01 00:08:39,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 21 transitions, 82 flow [2023-09-01 00:08:39,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 21 transitions, 82 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 00:08:39,662 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 40 flow [2023-09-01 00:08:39,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-09-01 00:08:39,663 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -6 predicate places. [2023-09-01 00:08:39,663 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 40 flow [2023-09-01 00:08:39,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:08:39,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:08:39,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 00:08:39,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-09-01 00:08:39,873 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 [2023-09-01 00:08:39,873 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-09-01 00:08:39,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:08:39,874 INFO L85 PathProgramCache]: Analyzing trace with hash 279298, now seen corresponding path program 1 times [2023-09-01 00:08:39,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:08:39,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409759429] [2023-09-01 00:08:39,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:08:39,875 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 [2023-09-01 00:08:39,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:08:39,877 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) [2023-09-01 00:08:39,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-09-01 00:08:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:08:39,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 00:08:39,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:08:39,966 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 00:08:39,966 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-09-01 00:08:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:08:39,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:08:39,985 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:08:39,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409759429] [2023-09-01 00:08:39,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409759429] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:08:39,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:08:39,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:08:39,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050764885] [2023-09-01 00:08:39,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:08:39,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:08:39,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:08:39,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:08:39,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:08:40,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 160 [2023-09-01 00:08:40,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:08:40,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:08:40,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 160 [2023-09-01 00:08:40,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:08:40,101 INFO L130 PetriNetUnfolder]: 24/64 cut-off events. [2023-09-01 00:08:40,101 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:08:40,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 64 events. 24/64 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 196 event pairs, 24 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 137. Up to 60 conditions per place. [2023-09-01 00:08:40,102 INFO L137 encePairwiseOnDemand]: 157/160 looper letters, 11 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2023-09-01 00:08:40,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 14 transitions, 60 flow [2023-09-01 00:08:40,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:08:40,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:08:40,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2023-09-01 00:08:40,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2023-09-01 00:08:40,105 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2023-09-01 00:08:40,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2023-09-01 00:08:40,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:08:40,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2023-09-01 00:08:40,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:08:40,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:08:40,109 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:08:40,109 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 40 flow. Second operand 3 states and 218 transitions. [2023-09-01 00:08:40,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 14 transitions, 60 flow [2023-09-01 00:08:40,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 54 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:08:40,110 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 32 flow [2023-09-01 00:08:40,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-09-01 00:08:40,111 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -8 predicate places. [2023-09-01 00:08:40,111 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 32 flow [2023-09-01 00:08:40,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:08:40,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:08:40,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 00:08:40,124 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 [2023-09-01 00:08:40,321 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 [2023-09-01 00:08:40,322 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-09-01 00:08:40,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:08:40,323 INFO L85 PathProgramCache]: Analyzing trace with hash 8658517, now seen corresponding path program 1 times [2023-09-01 00:08:40,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:08:40,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66194681] [2023-09-01 00:08:40,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:08:40,323 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 [2023-09-01 00:08:40,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:08:40,325 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) [2023-09-01 00:08:40,328 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 [2023-09-01 00:08:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:08:40,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 00:08:40,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:08:40,428 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-09-01 00:08:40,428 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 1 case distinctions, treesize of input 9 treesize of output 19 [2023-09-01 00:08:40,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:08:40,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:08:40,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:08:40,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66194681] [2023-09-01 00:08:40,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66194681] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:08:40,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:08:40,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 00:08:40,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987728848] [2023-09-01 00:08:40,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:08:40,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 00:08:40,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:08:40,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 00:08:40,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 00:08:40,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 160 [2023-09-01 00:08:40,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 32 flow. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:08:40,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:08:40,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 160 [2023-09-01 00:08:40,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:08:40,760 INFO L130 PetriNetUnfolder]: 22/68 cut-off events. [2023-09-01 00:08:40,760 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:08:40,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 68 events. 22/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 208 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 139. Up to 36 conditions per place. [2023-09-01 00:08:40,761 INFO L137 encePairwiseOnDemand]: 152/160 looper letters, 18 selfloop transitions, 8 changer transitions 0/26 dead transitions. [2023-09-01 00:08:40,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 26 transitions, 108 flow [2023-09-01 00:08:40,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 00:08:40,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 00:08:40,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 339 transitions. [2023-09-01 00:08:40,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42375 [2023-09-01 00:08:40,768 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 339 transitions. [2023-09-01 00:08:40,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 339 transitions. [2023-09-01 00:08:40,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:08:40,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 339 transitions. [2023-09-01 00:08:40,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:08:40,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:08:40,772 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:08:40,772 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 32 flow. Second operand 5 states and 339 transitions. [2023-09-01 00:08:40,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 26 transitions, 108 flow [2023-09-01 00:08:40,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 26 transitions, 107 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:08:40,773 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 85 flow [2023-09-01 00:08:40,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=85, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-09-01 00:08:40,774 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-09-01 00:08:40,777 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 85 flow [2023-09-01 00:08:40,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:08:40,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:08:40,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:08:40,788 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 [2023-09-01 00:08:40,978 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 [2023-09-01 00:08:40,978 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-09-01 00:08:40,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:08:40,979 INFO L85 PathProgramCache]: Analyzing trace with hash 258175388, now seen corresponding path program 1 times [2023-09-01 00:08:40,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:08:40,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411121192] [2023-09-01 00:08:40,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:08:40,980 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 [2023-09-01 00:08:40,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:08:40,981 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) [2023-09-01 00:08:40,983 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 [2023-09-01 00:08:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:08:41,084 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:08:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:08:41,171 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-09-01 00:08:41,172 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:08:41,172 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (17 of 18 remaining) [2023-09-01 00:08:41,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining) [2023-09-01 00:08:41,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2023-09-01 00:08:41,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2023-09-01 00:08:41,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2023-09-01 00:08:41,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2023-09-01 00:08:41,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2023-09-01 00:08:41,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2023-09-01 00:08:41,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 18 remaining) [2023-09-01 00:08:41,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-09-01 00:08:41,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2023-09-01 00:08:41,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2023-09-01 00:08:41,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2023-09-01 00:08:41,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2023-09-01 00:08:41,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2023-09-01 00:08:41,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2023-09-01 00:08:41,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2023-09-01 00:08:41,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2023-09-01 00:08:41,192 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 [2023-09-01 00:08:41,377 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 [2023-09-01 00:08:41,378 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-09-01 00:08:41,383 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 00:08:41,383 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 00:08:41,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 12:08:41 BasicIcfg [2023-09-01 00:08:41,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 00:08:41,404 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 00:08:41,404 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 00:08:41,404 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 00:08:41,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:08:29" (3/4) ... [2023-09-01 00:08:41,407 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-09-01 00:08:41,407 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 00:08:41,408 INFO L158 Benchmark]: Toolchain (without parser) took 13231.44ms. Allocated memory was 83.9MB in the beginning and 104.9MB in the end (delta: 21.0MB). Free memory was 57.1MB in the beginning and 53.4MB in the end (delta: 3.7MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. [2023-09-01 00:08:41,408 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 60.8MB. Free memory is still 38.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:08:41,408 INFO L158 Benchmark]: CACSL2BoogieTranslator took 724.64ms. Allocated memory is still 83.9MB. Free memory was 56.9MB in the beginning and 31.6MB in the end (delta: 25.3MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2023-09-01 00:08:41,408 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.21ms. Allocated memory is still 83.9MB. Free memory was 31.6MB in the beginning and 28.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 00:08:41,409 INFO L158 Benchmark]: Boogie Preprocessor took 26.13ms. Allocated memory is still 83.9MB. Free memory was 28.8MB in the beginning and 27.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:08:41,409 INFO L158 Benchmark]: RCFGBuilder took 623.70ms. Allocated memory is still 83.9MB. Free memory was 27.2MB in the beginning and 46.0MB in the end (delta: -18.8MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. [2023-09-01 00:08:41,409 INFO L158 Benchmark]: TraceAbstraction took 11799.73ms. Allocated memory was 83.9MB in the beginning and 104.9MB in the end (delta: 21.0MB). Free memory was 45.4MB in the beginning and 53.4MB in the end (delta: -8.0MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2023-09-01 00:08:41,415 INFO L158 Benchmark]: Witness Printer took 4.42ms. Allocated memory is still 104.9MB. Free memory is still 53.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:08:41,417 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 60.8MB. Free memory is still 38.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 724.64ms. Allocated memory is still 83.9MB. Free memory was 56.9MB in the beginning and 31.6MB in the end (delta: 25.3MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.21ms. Allocated memory is still 83.9MB. Free memory was 31.6MB in the beginning and 28.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.13ms. Allocated memory is still 83.9MB. Free memory was 28.8MB in the beginning and 27.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 623.70ms. Allocated memory is still 83.9MB. Free memory was 27.2MB in the beginning and 46.0MB in the end (delta: -18.8MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. * TraceAbstraction took 11799.73ms. Allocated memory was 83.9MB in the beginning and 104.9MB in the end (delta: 21.0MB). Free memory was 45.4MB in the beginning and 53.4MB in the end (delta: -8.0MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Witness Printer took 4.42ms. Allocated memory is still 104.9MB. Free memory is still 53.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.9s, 75 PlacesBefore, 28 PlacesAfterwards, 71 TransitionsBefore, 24 TransitionsAfterwards, 988 CoEnabledTransitionPairs, 5 FixpointIterations, 34 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 88 TotalNumberOfCompositions, 2011 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1233, independent: 1133, independent conditional: 0, independent unconditional: 1133, dependent: 100, dependent conditional: 0, dependent unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 575, independent: 552, independent conditional: 0, independent unconditional: 552, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1233, independent: 581, independent conditional: 0, independent unconditional: 581, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 575, unknown conditional: 0, unknown unconditional: 575] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 1242]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1242. Possible FailurePath: [L1223-L1227] 0 struct s { int datum; pthread_mutex_t mutex; int list; } *A; [L1243] 0 pthread_t t1; [L1244] 0 A = malloc(sizeof(struct s)) [L1245] CALL 0 init(A,666) [L1229] 0 p->datum = x [L1245] RET 0 init(A,666) [L1246] FCALL, FORK 0 pthread_create(&t1, ((void *)0), t_fun, ((void *)0)) VAL [A={1:0}, pthread_create(&t1, ((void *)0), t_fun, ((void *)0))=-1, t1={65543:0}] [L1247] CALL 0 update(&A->list) [L1233] 0 struct s *s = ((struct s *)((char *)(p)-(unsigned long)(&((struct s *)0)->list))); [L1235] EXPR 0 s->datum VAL [A={1:0}, p={1:28}, p={1:28}, s->datum=666, s={1:0}] [L1235] 0 s->datum++ [L1247] RET 0 update(&A->list) [L1248] 0 return 0; [L1248] 0 return 0; - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1246]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 94 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 245 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 116 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 230 IncrementalHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 26 mSDtfsCounter, 230 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=4, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 53 SizeOfPredicates, 6 NumberOfNonLiveVariables, 194 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-09-01 00:08:41,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample