./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c --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/weaver/popl20-commit-2.wvr.c -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 f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --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 02:50:18,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 02:50:18,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 02:50:18,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 02:50:18,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 02:50:18,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 02:50:18,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 02:50:18,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 02:50:18,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 02:50:18,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 02:50:18,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 02:50:18,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 02:50:18,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 02:50:18,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 02:50:18,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 02:50:18,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 02:50:18,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 02:50:18,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 02:50:18,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 02:50:18,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 02:50:18,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 02:50:18,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 02:50:18,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 02:50:18,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 02:50:18,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 02:50:18,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 02:50:18,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 02:50:18,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 02:50:18,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 02:50:18,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 02:50:18,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 02:50:18,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 02:50:18,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 02:50:18,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 02:50:18,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 02:50:18,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 02:50:18,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 02:50:18,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 02:50:18,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 02:50:18,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 02:50:18,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 02:50:18,127 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 02:50:18,159 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 02:50:18,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 02:50:18,161 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 02:50:18,161 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 02:50:18,162 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 02:50:18,162 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 02:50:18,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 02:50:18,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 02:50:18,163 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 02:50:18,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 02:50:18,164 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 02:50:18,164 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 02:50:18,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 02:50:18,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 02:50:18,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 02:50:18,165 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 02:50:18,165 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 02:50:18,166 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 02:50:18,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 02:50:18,166 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 02:50:18,166 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 02:50:18,166 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 02:50:18,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 02:50:18,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 02:50:18,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 02:50:18,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:50:18,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 02:50:18,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 02:50:18,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 02:50:18,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 02:50:18,168 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 02:50:18,168 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 02:50:18,169 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 02:50:18,169 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 02:50:18,169 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 02:50:18,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 02:50:18,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 02:50:18,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 02:50:18,497 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 02:50:18,498 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 02:50:18,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2023-09-01 02:50:19,574 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 02:50:19,820 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 02:50:19,820 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2023-09-01 02:50:19,826 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97c809124/74929ecb8cb24e43833d5f323b6919ea/FLAG9ff97e45b [2023-09-01 02:50:19,840 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97c809124/74929ecb8cb24e43833d5f323b6919ea [2023-09-01 02:50:19,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 02:50:19,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 02:50:19,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 02:50:19,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 02:50:19,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 02:50:19,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:50:19" (1/1) ... [2023-09-01 02:50:19,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4153bd01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:50:19, skipping insertion in model container [2023-09-01 02:50:19,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:50:19" (1/1) ... [2023-09-01 02:50:19,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 02:50:19,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 02:50:20,027 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c[5846,5859] [2023-09-01 02:50:20,035 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:50:20,046 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 02:50:20,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@57c03ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:50:20, skipping insertion in model container [2023-09-01 02:50:20,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 02:50:20,047 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-09-01 02:50:20,049 INFO L158 Benchmark]: Toolchain (without parser) took 204.95ms. Allocated memory is still 60.8MB. Free memory was 38.2MB in the beginning and 27.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 02:50:20,050 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 50.3MB. Free memory was 27.8MB in the beginning and 27.8MB in the end (delta: 46.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 02:50:20,050 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.42ms. Allocated memory is still 60.8MB. Free memory was 38.0MB in the beginning and 27.4MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 02:50:20,052 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 50.3MB. Free memory was 27.8MB in the beginning and 27.8MB in the end (delta: 46.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 202.42ms. Allocated memory is still 60.8MB. Free memory was 38.0MB in the beginning and 27.4MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 195]: 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/weaver/popl20-commit-2.wvr.c -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 f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --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 02:50:21,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 02:50:21,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 02:50:21,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 02:50:21,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 02:50:21,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 02:50:21,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 02:50:21,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 02:50:21,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 02:50:21,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 02:50:21,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 02:50:21,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 02:50:21,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 02:50:21,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 02:50:21,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 02:50:21,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 02:50:21,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 02:50:21,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 02:50:21,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 02:50:21,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 02:50:21,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 02:50:21,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 02:50:21,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 02:50:21,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 02:50:21,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 02:50:21,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 02:50:21,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 02:50:21,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 02:50:21,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 02:50:21,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 02:50:21,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 02:50:21,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 02:50:21,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 02:50:21,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 02:50:21,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 02:50:21,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 02:50:21,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 02:50:21,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 02:50:21,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 02:50:21,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 02:50:21,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 02:50:21,890 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-09-01 02:50:21,911 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 02:50:21,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 02:50:21,912 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 02:50:21,912 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 02:50:21,913 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 02:50:21,913 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 02:50:21,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 02:50:21,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 02:50:21,914 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 02:50:21,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 02:50:21,915 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 02:50:21,916 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 02:50:21,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 02:50:21,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 02:50:21,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 02:50:21,916 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 02:50:21,916 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 02:50:21,917 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 02:50:21,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 02:50:21,917 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 02:50:21,917 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-09-01 02:50:21,917 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-09-01 02:50:21,918 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 02:50:21,918 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 02:50:21,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 02:50:21,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 02:50:21,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 02:50:21,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:50:21,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 02:50:21,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 02:50:21,919 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-09-01 02:50:21,919 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-09-01 02:50:21,920 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 02:50:21,920 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 02:50:21,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 02:50:21,920 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-09-01 02:50:21,920 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 02:50:21,921 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 02:50:22,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 02:50:22,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 02:50:22,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 02:50:22,268 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 02:50:22,268 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 02:50:22,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2023-09-01 02:50:23,467 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 02:50:23,710 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 02:50:23,710 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2023-09-01 02:50:23,723 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9fb4501b/a2f8498426764e73b2de6f087ebfd4ce/FLAG22950c21d [2023-09-01 02:50:23,748 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9fb4501b/a2f8498426764e73b2de6f087ebfd4ce [2023-09-01 02:50:23,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 02:50:23,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 02:50:23,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 02:50:23,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 02:50:23,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 02:50:23,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:50:23" (1/1) ... [2023-09-01 02:50:23,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44b88cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:50:23, skipping insertion in model container [2023-09-01 02:50:23,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:50:23" (1/1) ... [2023-09-01 02:50:23,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 02:50:23,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 02:50:24,020 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c[5846,5859] [2023-09-01 02:50:24,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:50:24,053 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-09-01 02:50:24,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 02:50:24,099 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c[5846,5859] [2023-09-01 02:50:24,107 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:50:24,119 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 02:50:24,160 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c[5846,5859] [2023-09-01 02:50:24,162 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:50:24,171 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:50:24,171 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:50:24,177 INFO L208 MainTranslator]: Completed translation [2023-09-01 02:50:24,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:50:24 WrapperNode [2023-09-01 02:50:24,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 02:50:24,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 02:50:24,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 02:50:24,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 02:50:24,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:50:24" (1/1) ... [2023-09-01 02:50:24,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:50:24" (1/1) ... [2023-09-01 02:50:24,248 INFO L138 Inliner]: procedures = 28, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 460 [2023-09-01 02:50:24,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 02:50:24,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 02:50:24,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 02:50:24,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 02:50:24,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:50:24" (1/1) ... [2023-09-01 02:50:24,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:50:24" (1/1) ... [2023-09-01 02:50:24,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:50:24" (1/1) ... [2023-09-01 02:50:24,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:50:24" (1/1) ... [2023-09-01 02:50:24,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:50:24" (1/1) ... [2023-09-01 02:50:24,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:50:24" (1/1) ... [2023-09-01 02:50:24,303 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:50:24" (1/1) ... [2023-09-01 02:50:24,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:50:24" (1/1) ... [2023-09-01 02:50:24,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 02:50:24,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 02:50:24,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 02:50:24,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 02:50:24,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:50:24" (1/1) ... [2023-09-01 02:50:24,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:50:24,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:50:24,349 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 02:50:24,381 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 02:50:24,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 02:50:24,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-09-01 02:50:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 02:50:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-09-01 02:50:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 02:50:24,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 02:50:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 02:50:24,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 02:50:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 02:50:24,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 02:50:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 02:50:24,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 02:50:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 02:50:24,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 02:50:24,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 02:50:24,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 02:50:24,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 02:50:24,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 02:50:24,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-09-01 02:50:24,401 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 02:50:24,577 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 02:50:24,581 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 02:50:25,486 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 02:50:25,815 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 02:50:25,815 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-09-01 02:50:25,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:50:25 BoogieIcfgContainer [2023-09-01 02:50:25,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 02:50:25,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 02:50:25,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 02:50:25,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 02:50:25,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 02:50:23" (1/3) ... [2023-09-01 02:50:25,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4338988a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:50:25, skipping insertion in model container [2023-09-01 02:50:25,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:50:24" (2/3) ... [2023-09-01 02:50:25,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4338988a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:50:25, skipping insertion in model container [2023-09-01 02:50:25,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:50:25" (3/3) ... [2023-09-01 02:50:25,825 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2023-09-01 02:50:25,841 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 02:50:25,841 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2023-09-01 02:50:25,841 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 02:50:25,988 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 02:50:26,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 359 transitions, 750 flow [2023-09-01 02:50:26,193 INFO L130 PetriNetUnfolder]: 25/355 cut-off events. [2023-09-01 02:50:26,193 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 02:50:26,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 355 events. 25/355 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 399 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 301. Up to 2 conditions per place. [2023-09-01 02:50:26,203 INFO L82 GeneralOperation]: Start removeDead. Operand has 347 places, 359 transitions, 750 flow [2023-09-01 02:50:26,213 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 339 places, 351 transitions, 726 flow [2023-09-01 02:50:26,217 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 02:50:26,225 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 339 places, 351 transitions, 726 flow [2023-09-01 02:50:26,228 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 339 places, 351 transitions, 726 flow [2023-09-01 02:50:26,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 339 places, 351 transitions, 726 flow [2023-09-01 02:50:26,280 INFO L130 PetriNetUnfolder]: 25/351 cut-off events. [2023-09-01 02:50:26,280 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 02:50:26,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 351 events. 25/351 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 397 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 301. Up to 2 conditions per place. [2023-09-01 02:50:26,286 INFO L119 LiptonReduction]: Number of co-enabled transitions 6800 [2023-09-01 02:51:08,984 WARN L222 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 153 DAG size of output: 148 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 02:51:14,561 INFO L134 LiptonReduction]: Checked pairs total: 28525 [2023-09-01 02:51:14,561 INFO L136 LiptonReduction]: Total number of compositions: 387 [2023-09-01 02:51:14,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 02:51:14,583 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;@5306cce7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 02:51:14,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2023-09-01 02:51:14,586 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 02:51:14,587 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 02:51:14,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:51:14,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 02:51:14,588 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2023-09-01 02:51:14,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:51:14,593 INFO L85 PathProgramCache]: Analyzing trace with hash 58817, now seen corresponding path program 1 times [2023-09-01 02:51:14,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 02:51:14,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451957936] [2023-09-01 02:51:14,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:51:14,607 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 02:51:14,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 02:51:14,611 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 02:51:14,615 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 02:51:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:51:14,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 02:51:14,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:51:15,115 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2023-09-01 02:51:15,116 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 4 case distinctions, treesize of input 20 treesize of output 62 [2023-09-01 02:51:15,181 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 02:51:15,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 02:51:15,182 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 02:51:15,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451957936] [2023-09-01 02:51:15,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451957936] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:51:15,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:51:15,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:51:15,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767256725] [2023-09-01 02:51:15,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:51:15,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:51:15,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 02:51:15,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:51:15,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:51:15,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 746 [2023-09-01 02:51:15,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 0 states have call successors, (0), 0 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 02:51:15,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:51:15,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 746 [2023-09-01 02:51:15,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:51:43,513 INFO L130 PetriNetUnfolder]: 229215/293237 cut-off events. [2023-09-01 02:51:43,513 INFO L131 PetriNetUnfolder]: For 2356/2356 co-relation queries the response was YES. [2023-09-01 02:51:43,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591616 conditions, 293237 events. 229215/293237 cut-off events. For 2356/2356 co-relation queries the response was YES. Maximal size of possible extension queue 10272. Compared 1768876 event pairs, 200088 based on Foata normal form. 0/90017 useless extension candidates. Maximal degree in co-relation 283100. Up to 146622 conditions per place. [2023-09-01 02:51:45,071 INFO L137 encePairwiseOnDemand]: 733/746 looper letters, 165 selfloop transitions, 8 changer transitions 0/173 dead transitions. [2023-09-01 02:51:45,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 173 transitions, 740 flow [2023-09-01 02:51:45,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:51:45,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:51:45,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1010 transitions. [2023-09-01 02:51:45,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.451295799821269 [2023-09-01 02:51:45,092 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1010 transitions. [2023-09-01 02:51:45,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1010 transitions. [2023-09-01 02:51:45,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:51:45,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1010 transitions. [2023-09-01 02:51:45,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 336.6666666666667) internal successors, (1010), 3 states have internal predecessors, (1010), 0 states have call successors, (0), 0 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 02:51:45,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 746.0) internal successors, (2984), 4 states have internal predecessors, (2984), 0 states have call successors, (0), 0 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 02:51:45,114 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 746.0) internal successors, (2984), 4 states have internal predecessors, (2984), 0 states have call successors, (0), 0 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 02:51:45,116 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 204 flow. Second operand 3 states and 1010 transitions. [2023-09-01 02:51:45,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 173 transitions, 740 flow [2023-09-01 02:51:45,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 173 transitions, 708 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-09-01 02:51:45,458 INFO L231 Difference]: Finished difference. Result has 90 places, 96 transitions, 254 flow [2023-09-01 02:51:45,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=746, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=90, PETRI_TRANSITIONS=96} [2023-09-01 02:51:45,464 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -5 predicate places. [2023-09-01 02:51:45,465 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 96 transitions, 254 flow [2023-09-01 02:51:45,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 0 states have call successors, (0), 0 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 02:51:45,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:51:45,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 02:51:45,480 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 02:51:45,676 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 02:51:45,677 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2023-09-01 02:51:45,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:51:45,678 INFO L85 PathProgramCache]: Analyzing trace with hash 58816, now seen corresponding path program 1 times [2023-09-01 02:51:45,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 02:51:45,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100513795] [2023-09-01 02:51:45,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:51:45,679 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 02:51:45,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 02:51:45,680 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 02:51:45,683 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 02:51:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:51:45,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 02:51:45,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:51:45,890 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2023-09-01 02:51:45,890 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 4 case distinctions, treesize of input 18 treesize of output 70 [2023-09-01 02:51:45,914 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 02:51:45,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 02:51:45,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 02:51:45,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100513795] [2023-09-01 02:51:45,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100513795] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:51:45,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:51:45,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:51:45,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060999937] [2023-09-01 02:51:45,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:51:45,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:51:45,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 02:51:45,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:51:45,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:51:46,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 746 [2023-09-01 02:51:46,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 96 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 0 states have call successors, (0), 0 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 02:51:46,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:51:46,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 746 [2023-09-01 02:51:46,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:52:09,985 INFO L130 PetriNetUnfolder]: 229215/293229 cut-off events. [2023-09-01 02:52:09,986 INFO L131 PetriNetUnfolder]: For 196/196 co-relation queries the response was YES. [2023-09-01 02:52:10,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588657 conditions, 293229 events. 229215/293229 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 10665. Compared 1771001 event pairs, 200088 based on Foata normal form. 6/90031 useless extension candidates. Maximal degree in co-relation 294303. Up to 293229 conditions per place. [2023-09-01 02:52:11,357 INFO L137 encePairwiseOnDemand]: 741/746 looper letters, 91 selfloop transitions, 1 changer transitions 0/92 dead transitions. [2023-09-01 02:52:11,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 92 transitions, 430 flow [2023-09-01 02:52:11,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:52:11,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:52:11,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 920 transitions. [2023-09-01 02:52:11,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4110813226094727 [2023-09-01 02:52:11,361 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 920 transitions. [2023-09-01 02:52:11,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 920 transitions. [2023-09-01 02:52:11,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:52:11,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 920 transitions. [2023-09-01 02:52:11,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 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 02:52:11,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 746.0) internal successors, (2984), 4 states have internal predecessors, (2984), 0 states have call successors, (0), 0 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 02:52:11,370 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 746.0) internal successors, (2984), 4 states have internal predecessors, (2984), 0 states have call successors, (0), 0 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 02:52:11,370 INFO L175 Difference]: Start difference. First operand has 90 places, 96 transitions, 254 flow. Second operand 3 states and 920 transitions. [2023-09-01 02:52:11,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 92 transitions, 430 flow [2023-09-01 02:52:11,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 92 transitions, 414 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 02:52:11,374 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 232 flow [2023-09-01 02:52:11,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=746, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2023-09-01 02:52:11,375 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -9 predicate places. [2023-09-01 02:52:11,375 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 232 flow [2023-09-01 02:52:11,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 0 states have call successors, (0), 0 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 02:52:11,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:52:11,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 02:52:11,388 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 02:52:11,589 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 02:52:11,589 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2023-09-01 02:52:11,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:52:11,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1829599, now seen corresponding path program 1 times [2023-09-01 02:52:11,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 02:52:11,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600257130] [2023-09-01 02:52:11,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:52:11,590 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 02:52:11,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 02:52:11,591 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 02:52:11,597 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 02:52:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:52:11,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 02:52:11,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:52:11,857 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2023-09-01 02:52:11,857 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 4 case distinctions, treesize of input 20 treesize of output 62 [2023-09-01 02:52:11,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:52:11,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:52:12,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:52:12,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 02:52:12,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1600257130] [2023-09-01 02:52:12,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1600257130] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:52:12,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 02:52:12,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-09-01 02:52:12,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388028702] [2023-09-01 02:52:12,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 02:52:12,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:52:12,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 02:52:12,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:52:12,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:52:13,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 746 [2023-09-01 02:52:13,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 232 flow. Second operand has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 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 02:52:13,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:52:13,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 746 [2023-09-01 02:52:13,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:52:50,448 INFO L130 PetriNetUnfolder]: 343834/439861 cut-off events. [2023-09-01 02:52:50,449 INFO L131 PetriNetUnfolder]: For 294/294 co-relation queries the response was YES. [2023-09-01 02:52:50,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 883019 conditions, 439861 events. 343834/439861 cut-off events. For 294/294 co-relation queries the response was YES. Maximal size of possible extension queue 15289. Compared 2773060 event pairs, 300132 based on Foata normal form. 0/135038 useless extension candidates. Maximal degree in co-relation 883011. Up to 146621 conditions per place. [2023-09-01 02:52:52,513 INFO L137 encePairwiseOnDemand]: 731/746 looper letters, 230 selfloop transitions, 35 changer transitions 0/265 dead transitions. [2023-09-01 02:52:52,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 265 transitions, 1166 flow [2023-09-01 02:52:52,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 02:52:52,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 02:52:52,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1819 transitions. [2023-09-01 02:52:52,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4063896336014298 [2023-09-01 02:52:52,520 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1819 transitions. [2023-09-01 02:52:52,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1819 transitions. [2023-09-01 02:52:52,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:52:52,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1819 transitions. [2023-09-01 02:52:52,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 303.1666666666667) internal successors, (1819), 6 states have internal predecessors, (1819), 0 states have call successors, (0), 0 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 02:52:52,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 746.0) internal successors, (5222), 7 states have internal predecessors, (5222), 0 states have call successors, (0), 0 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 02:52:52,538 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 746.0) internal successors, (5222), 7 states have internal predecessors, (5222), 0 states have call successors, (0), 0 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 02:52:52,538 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 232 flow. Second operand 6 states and 1819 transitions. [2023-09-01 02:52:52,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 265 transitions, 1166 flow [2023-09-01 02:52:52,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 265 transitions, 1165 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:52:52,546 INFO L231 Difference]: Finished difference. Result has 94 places, 119 transitions, 494 flow [2023-09-01 02:52:52,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=746, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=494, PETRI_PLACES=94, PETRI_TRANSITIONS=119} [2023-09-01 02:52:52,548 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -1 predicate places. [2023-09-01 02:52:52,549 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 119 transitions, 494 flow [2023-09-01 02:52:52,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 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 02:52:52,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:52:52,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:52:52,562 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 02:52:52,756 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 02:52:52,757 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2023-09-01 02:52:52,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:52:52,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1759579705, now seen corresponding path program 1 times [2023-09-01 02:52:52,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 02:52:52,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472614966] [2023-09-01 02:52:52,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:52:52,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 02:52:52,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 02:52:52,760 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 02:52:52,761 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 02:52:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:52:52,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 27 conjunts are in the unsatisfiable core [2023-09-01 02:52:52,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:52:52,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:52:53,067 INFO L321 Elim1Store]: treesize reduction 186, result has 15.1 percent of original size [2023-09-01 02:52:53,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 73 [2023-09-01 02:52:53,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:52:53,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:52:53,295 INFO L321 Elim1Store]: treesize reduction 86, result has 28.3 percent of original size [2023-09-01 02:52:53,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 71 [2023-09-01 02:52:53,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:52:53,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:52:53,567 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-09-01 02:52:53,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 68 [2023-09-01 02:52:56,349 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-09-01 02:52:56,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2023-09-01 02:52:56,508 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 02:52:56,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 02:52:56,509 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 02:52:56,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472614966] [2023-09-01 02:52:56,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472614966] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:52:56,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:52:56,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 02:52:56,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054024036] [2023-09-01 02:52:56,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:52:56,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 02:52:56,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 02:52:56,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 02:52:56,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 02:53:01,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 746 [2023-09-01 02:53:01,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 119 transitions, 494 flow. Second operand has 5 states, 5 states have (on average 282.0) internal successors, (1410), 5 states have internal predecessors, (1410), 0 states have call successors, (0), 0 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 02:53:01,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:53:01,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 746 [2023-09-01 02:53:01,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:53:30,674 INFO L130 PetriNetUnfolder]: 265628/342101 cut-off events. [2023-09-01 02:53:30,675 INFO L131 PetriNetUnfolder]: For 304/304 co-relation queries the response was YES. [2023-09-01 02:53:31,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687592 conditions, 342101 events. 265628/342101 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 11985. Compared 2145949 event pairs, 231336 based on Foata normal form. 0/112122 useless extension candidates. Maximal degree in co-relation 687579. Up to 342101 conditions per place. [2023-09-01 02:53:32,399 INFO L137 encePairwiseOnDemand]: 743/746 looper letters, 114 selfloop transitions, 1 changer transitions 0/115 dead transitions. [2023-09-01 02:53:32,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 115 transitions, 704 flow [2023-09-01 02:53:32,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:53:32,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:53:32,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 928 transitions. [2023-09-01 02:53:32,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41465594280607687 [2023-09-01 02:53:32,403 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 928 transitions. [2023-09-01 02:53:32,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 928 transitions. [2023-09-01 02:53:32,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:53:32,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 928 transitions. [2023-09-01 02:53:32,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 0 states have call successors, (0), 0 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 02:53:32,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 746.0) internal successors, (2984), 4 states have internal predecessors, (2984), 0 states have call successors, (0), 0 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 02:53:32,568 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 746.0) internal successors, (2984), 4 states have internal predecessors, (2984), 0 states have call successors, (0), 0 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 02:53:32,568 INFO L175 Difference]: Start difference. First operand has 94 places, 119 transitions, 494 flow. Second operand 3 states and 928 transitions. [2023-09-01 02:53:32,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 115 transitions, 704 flow [2023-09-01 02:53:32,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 115 transitions, 663 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-09-01 02:53:32,577 INFO L231 Difference]: Finished difference. Result has 93 places, 115 transitions, 435 flow [2023-09-01 02:53:32,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=746, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=435, PETRI_PLACES=93, PETRI_TRANSITIONS=115} [2023-09-01 02:53:32,594 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -2 predicate places. [2023-09-01 02:53:32,597 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 115 transitions, 435 flow [2023-09-01 02:53:32,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.0) internal successors, (1410), 5 states have internal predecessors, (1410), 0 states have call successors, (0), 0 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 02:53:32,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:53:32,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:53:32,619 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 02:53:32,808 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 02:53:32,809 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2023-09-01 02:53:32,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:53:32,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1759579706, now seen corresponding path program 1 times [2023-09-01 02:53:32,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 02:53:32,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640367561] [2023-09-01 02:53:32,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:53:32,810 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 02:53:32,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 02:53:32,811 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 02:53:32,812 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 02:53:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:53:32,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 02:53:32,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:53:33,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:53:33,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:53:33,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:53:33,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:53:33,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:53:33,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:53:33,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:53:33,130 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2023-09-01 02:53:33,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 38 [2023-09-01 02:53:33,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:53:33,280 INFO L321 Elim1Store]: treesize reduction 182, result has 16.9 percent of original size [2023-09-01 02:53:33,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 77 [2023-09-01 02:53:33,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:53:33,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-09-01 02:53:33,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:53:33,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:53:33,420 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-09-01 02:53:33,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2023-09-01 02:53:33,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:53:33,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-09-01 02:53:33,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:53:33,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-09-01 02:53:33,584 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 02:53:33,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 02:53:33,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 02:53:33,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640367561] [2023-09-01 02:53:33,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640367561] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:53:33,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:53:33,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 02:53:33,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482595551] [2023-09-01 02:53:33,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:53:33,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 02:53:33,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 02:53:33,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 02:53:33,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 02:53:34,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 746 [2023-09-01 02:53:34,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 115 transitions, 435 flow. Second operand has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 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 02:53:34,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:53:34,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 746 [2023-09-01 02:53:34,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:53:57,016 INFO L130 PetriNetUnfolder]: 187422/244341 cut-off events. [2023-09-01 02:53:57,016 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 02:53:57,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492039 conditions, 244341 events. 187422/244341 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 8703. Compared 1531921 event pairs, 162540 based on Foata normal form. 0/89190 useless extension candidates. Maximal degree in co-relation 492025. Up to 244341 conditions per place. [2023-09-01 02:53:58,265 INFO L137 encePairwiseOnDemand]: 743/746 looper letters, 110 selfloop transitions, 1 changer transitions 0/111 dead transitions. [2023-09-01 02:53:58,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 111 transitions, 637 flow [2023-09-01 02:53:58,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:53:58,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:53:58,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 923 transitions. [2023-09-01 02:53:58,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41242180518319926 [2023-09-01 02:53:58,269 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 923 transitions. [2023-09-01 02:53:58,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 923 transitions. [2023-09-01 02:53:58,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:53:58,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 923 transitions. [2023-09-01 02:53:58,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 307.6666666666667) internal successors, (923), 3 states have internal predecessors, (923), 0 states have call successors, (0), 0 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 02:53:58,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 746.0) internal successors, (2984), 4 states have internal predecessors, (2984), 0 states have call successors, (0), 0 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 02:53:58,276 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 746.0) internal successors, (2984), 4 states have internal predecessors, (2984), 0 states have call successors, (0), 0 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 02:53:58,276 INFO L175 Difference]: Start difference. First operand has 93 places, 115 transitions, 435 flow. Second operand 3 states and 923 transitions. [2023-09-01 02:53:58,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 111 transitions, 637 flow [2023-09-01 02:53:58,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 111 transitions, 636 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:53:58,280 INFO L231 Difference]: Finished difference. Result has 92 places, 111 transitions, 416 flow [2023-09-01 02:53:58,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=746, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=416, PETRI_PLACES=92, PETRI_TRANSITIONS=111} [2023-09-01 02:53:58,281 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -3 predicate places. [2023-09-01 02:53:58,282 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 111 transitions, 416 flow [2023-09-01 02:53:58,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 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 02:53:58,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:53:58,283 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 02:53:58,292 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 02:53:58,490 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 02:53:58,490 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2023-09-01 02:53:58,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:53:58,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1322762943, now seen corresponding path program 2 times [2023-09-01 02:53:58,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 02:53:58,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933763854] [2023-09-01 02:53:58,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 02:53:58,492 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 02:53:58,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 02:53:58,493 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 02:53:58,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-09-01 02:53:58,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:53:58,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:53:58,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 02:53:58,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:53:58,776 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2023-09-01 02:53:58,776 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 4 case distinctions, treesize of input 20 treesize of output 62 [2023-09-01 02:53:58,897 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:53:58,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:53:59,364 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:53:59,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 02:53:59,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933763854] [2023-09-01 02:53:59,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933763854] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:53:59,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 02:53:59,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-09-01 02:53:59,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541380375] [2023-09-01 02:53:59,365 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 02:53:59,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 02:53:59,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 02:53:59,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 02:53:59,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-09-01 02:54:04,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 746 [2023-09-01 02:54:04,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 111 transitions, 416 flow. Second operand has 12 states, 12 states have (on average 262.0) internal successors, (3144), 12 states have internal predecessors, (3144), 0 states have call successors, (0), 0 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 02:54:04,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:54:04,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 746 [2023-09-01 02:54:04,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:54:07,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:54:09,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:54:10,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:54:14,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:54:15,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:54:16,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:54:17,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:54:18,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:54:20,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:54:21,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:54:23,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:54:26,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:54:28,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:54:30,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:55:52,276 INFO L130 PetriNetUnfolder]: 624713/814409 cut-off events. [2023-09-01 02:55:52,276 INFO L131 PetriNetUnfolder]: For 1061/1061 co-relation queries the response was YES. [2023-09-01 02:55:54,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1639852 conditions, 814409 events. 624713/814409 cut-off events. For 1061/1061 co-relation queries the response was YES. Maximal size of possible extension queue 19993. Compared 5558228 event pairs, 541800 based on Foata normal form. 22/297252 useless extension candidates. Maximal degree in co-relation 1639837. Up to 81465 conditions per place. [2023-09-01 02:55:57,043 INFO L137 encePairwiseOnDemand]: 733/746 looper letters, 701 selfloop transitions, 68 changer transitions 0/769 dead transitions. [2023-09-01 02:55:57,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 769 transitions, 3526 flow [2023-09-01 02:55:57,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 02:55:57,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 02:55:57,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3923 transitions. [2023-09-01 02:55:57,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43822609472743523 [2023-09-01 02:55:57,053 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3923 transitions. [2023-09-01 02:55:57,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3923 transitions. [2023-09-01 02:55:57,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:55:57,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3923 transitions. [2023-09-01 02:55:57,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 326.9166666666667) internal successors, (3923), 12 states have internal predecessors, (3923), 0 states have call successors, (0), 0 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 02:55:57,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 746.0) internal successors, (9698), 13 states have internal predecessors, (9698), 0 states have call successors, (0), 0 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 02:55:57,073 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 746.0) internal successors, (9698), 13 states have internal predecessors, (9698), 0 states have call successors, (0), 0 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 02:55:57,073 INFO L175 Difference]: Start difference. First operand has 92 places, 111 transitions, 416 flow. Second operand 12 states and 3923 transitions. [2023-09-01 02:55:57,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 769 transitions, 3526 flow [2023-09-01 02:55:57,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 769 transitions, 3525 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:55:57,082 INFO L231 Difference]: Finished difference. Result has 109 places, 150 transitions, 909 flow [2023-09-01 02:55:57,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=746, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=909, PETRI_PLACES=109, PETRI_TRANSITIONS=150} [2023-09-01 02:55:57,083 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 14 predicate places. [2023-09-01 02:55:57,083 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 150 transitions, 909 flow [2023-09-01 02:55:57,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 262.0) internal successors, (3144), 12 states have internal predecessors, (3144), 0 states have call successors, (0), 0 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 02:55:57,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:55:57,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:55:57,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-09-01 02:55:57,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 02:55:57,290 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2023-09-01 02:55:57,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:55:57,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1260970407, now seen corresponding path program 1 times [2023-09-01 02:55:57,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 02:55:57,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451742323] [2023-09-01 02:55:57,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:55:57,290 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 02:55:57,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 02:55:57,294 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 02:55:57,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-09-01 02:55:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:55:57,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 02:55:57,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:55:57,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:55:57,574 INFO L321 Elim1Store]: treesize reduction 161, result has 20.3 percent of original size [2023-09-01 02:55:57,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 74 [2023-09-01 02:56:00,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:56:00,221 INFO L321 Elim1Store]: treesize reduction 34, result has 40.4 percent of original size [2023-09-01 02:56:00,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 52 [2023-09-01 02:56:00,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:56:00,949 INFO L321 Elim1Store]: treesize reduction 66, result has 49.2 percent of original size [2023-09-01 02:56:00,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 75 treesize of output 138 [2023-09-01 02:56:12,168 INFO L321 Elim1Store]: treesize reduction 52, result has 66.0 percent of original size [2023-09-01 02:56:12,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 95 treesize of output 188