./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3a877d22 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 ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b724500cddd07446974ec59df8ac86aa980f4ff713324fa73d397377235cbe2 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:44:47,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:44:47,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:44:47,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:44:47,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:44:47,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:44:47,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:44:47,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:44:47,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:44:47,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:44:47,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:44:47,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:44:47,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:44:47,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:44:47,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:44:47,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:44:47,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:44:47,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:44:47,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:44:47,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:44:47,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:44:47,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:44:47,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:44:47,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:44:47,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:44:47,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:44:47,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:44:47,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:44:47,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:44:47,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:44:47,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:44:47,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:44:47,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:44:47,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:44:47,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:44:47,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:44:47,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:44:47,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:44:47,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:44:47,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:44:47,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:44:47,962 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-15 16:44:47,987 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:44:47,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:44:47,988 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:44:47,988 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:44:47,989 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 16:44:47,989 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 16:44:47,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:44:47,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:44:47,990 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:44:47,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:44:47,990 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 16:44:47,990 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:44:47,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:44:47,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 16:44:47,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:44:47,991 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 16:44:47,991 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 16:44:47,991 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 16:44:47,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 16:44:47,992 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 16:44:47,992 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 16:44:47,992 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:44:47,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:44:47,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:44:47,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 16:44:47,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:44:47,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:44:47,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 16:44:47,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 16:44:47,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 16:44:47,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:44:47,993 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b724500cddd07446974ec59df8ac86aa980f4ff713324fa73d397377235cbe2 [2021-12-15 16:44:48,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:44:48,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:44:48,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:44:48,194 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:44:48,194 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:44:48,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i [2021-12-15 16:44:48,252 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1632dc38/d7d9f15b782b44318b98ac6ec9931a94/FLAG3c82167c1 [2021-12-15 16:44:48,709 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:44:48,710 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i [2021-12-15 16:44:48,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1632dc38/d7d9f15b782b44318b98ac6ec9931a94/FLAG3c82167c1 [2021-12-15 16:44:48,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1632dc38/d7d9f15b782b44318b98ac6ec9931a94 [2021-12-15 16:44:48,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:44:48,746 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:44:48,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:44:48,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:44:48,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:44:48,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:44:48" (1/1) ... [2021-12-15 16:44:48,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70399512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:48, skipping insertion in model container [2021-12-15 16:44:48,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:44:48" (1/1) ... [2021-12-15 16:44:48,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:44:48,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:44:49,143 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[33021,33034] [2021-12-15 16:44:49,283 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[49681,49694] [2021-12-15 16:44:49,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:44:49,312 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-15 16:44:49,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@63482f22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:49, skipping insertion in model container [2021-12-15 16:44:49,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:44:49,314 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-15 16:44:49,315 INFO L158 Benchmark]: Toolchain (without parser) took 568.40ms. Allocated memory is still 130.0MB. Free memory was 95.3MB in the beginning and 89.9MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 16:44:49,316 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 92.3MB. Free memory was 48.0MB in the beginning and 47.9MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:44:49,317 INFO L158 Benchmark]: CACSL2BoogieTranslator took 564.95ms. Allocated memory is still 130.0MB. Free memory was 95.0MB in the beginning and 90.3MB in the end (delta: 4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 16:44:49,319 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 92.3MB. Free memory was 48.0MB in the beginning and 47.9MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 564.95ms. Allocated memory is still 130.0MB. Free memory was 95.0MB in the beginning and 90.3MB in the end (delta: 4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type 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 ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b724500cddd07446974ec59df8ac86aa980f4ff713324fa73d397377235cbe2 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:44:50,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:44:50,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:44:50,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:44:50,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:44:50,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:44:50,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:44:50,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:44:50,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:44:50,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:44:50,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:44:50,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:44:50,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:44:50,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:44:50,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:44:50,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:44:50,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:44:50,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:44:50,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:44:50,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:44:50,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:44:50,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:44:50,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:44:50,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:44:50,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:44:50,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:44:50,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:44:50,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:44:50,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:44:50,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:44:50,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:44:50,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:44:50,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:44:50,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:44:50,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:44:50,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:44:50,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:44:50,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:44:50,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:44:50,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:44:50,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:44:50,968 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-15 16:44:50,993 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:44:50,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:44:50,994 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:44:50,995 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:44:50,995 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 16:44:50,995 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 16:44:50,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:44:50,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:44:50,997 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:44:50,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:44:50,997 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 16:44:50,998 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:44:50,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:44:50,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 16:44:50,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:44:50,998 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 16:44:50,998 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 16:44:50,999 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 16:44:50,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 16:44:50,999 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 16:44:50,999 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 16:44:50,999 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 16:44:50,999 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 16:44:50,999 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:44:51,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:44:51,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:44:51,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 16:44:51,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:44:51,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:44:51,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 16:44:51,001 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 16:44:51,001 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 16:44:51,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:44:51,001 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 16:44:51,001 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b724500cddd07446974ec59df8ac86aa980f4ff713324fa73d397377235cbe2 [2021-12-15 16:44:51,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:44:51,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:44:51,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:44:51,325 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:44:51,326 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:44:51,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i [2021-12-15 16:44:51,380 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d5b665f2/71eb38ae9cad40648b2bbfba7560d22b/FLAG9c8f87078 [2021-12-15 16:44:51,930 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:44:51,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i [2021-12-15 16:44:51,961 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d5b665f2/71eb38ae9cad40648b2bbfba7560d22b/FLAG9c8f87078 [2021-12-15 16:44:52,247 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d5b665f2/71eb38ae9cad40648b2bbfba7560d22b [2021-12-15 16:44:52,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:44:52,250 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:44:52,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:44:52,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:44:52,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:44:52,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:44:52" (1/1) ... [2021-12-15 16:44:52,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58fc2c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:52, skipping insertion in model container [2021-12-15 16:44:52,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:44:52" (1/1) ... [2021-12-15 16:44:52,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:44:52,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:44:52,624 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[33021,33034] [2021-12-15 16:44:52,759 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[49681,49694] [2021-12-15 16:44:52,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:44:52,788 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-15 16:44:52,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:44:52,807 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[33021,33034] [2021-12-15 16:44:52,858 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[49681,49694] [2021-12-15 16:44:52,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:44:52,872 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 16:44:52,887 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[33021,33034] [2021-12-15 16:44:52,921 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[49681,49694] [2021-12-15 16:44:52,929 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:44:52,980 INFO L208 MainTranslator]: Completed translation [2021-12-15 16:44:52,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:52 WrapperNode [2021-12-15 16:44:52,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:44:52,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 16:44:52,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 16:44:52,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 16:44:52,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:52" (1/1) ... [2021-12-15 16:44:53,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:52" (1/1) ... [2021-12-15 16:44:53,070 INFO L137 Inliner]: procedures = 180, calls = 487, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1721 [2021-12-15 16:44:53,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 16:44:53,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 16:44:53,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 16:44:53,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 16:44:53,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:52" (1/1) ... [2021-12-15 16:44:53,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:52" (1/1) ... [2021-12-15 16:44:53,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:52" (1/1) ... [2021-12-15 16:44:53,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:52" (1/1) ... [2021-12-15 16:44:53,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:52" (1/1) ... [2021-12-15 16:44:53,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:52" (1/1) ... [2021-12-15 16:44:53,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:52" (1/1) ... [2021-12-15 16:44:53,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 16:44:53,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 16:44:53,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 16:44:53,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 16:44:53,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:52" (1/1) ... [2021-12-15 16:44:53,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:44:53,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:44:53,217 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) [2021-12-15 16:44:53,236 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 [2021-12-15 16:44:53,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-15 16:44:53,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 16:44:53,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 16:44:53,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 16:44:53,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-15 16:44:53,252 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-15 16:44:53,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 16:44:53,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 16:44:53,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 16:44:53,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 16:44:53,252 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-15 16:44:53,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 16:44:53,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 16:44:53,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 16:44:53,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 16:44:53,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 16:44:53,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 16:44:53,504 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 16:44:53,505 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 16:44:53,508 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 16:44:58,428 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 16:44:58,448 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 16:44:58,449 INFO L301 CfgBuilder]: Removed 100 assume(true) statements. [2021-12-15 16:44:58,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:44:58 BoogieIcfgContainer [2021-12-15 16:44:58,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 16:44:58,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 16:44:58,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 16:44:58,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 16:44:58,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 04:44:52" (1/3) ... [2021-12-15 16:44:58,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ddc400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:44:58, skipping insertion in model container [2021-12-15 16:44:58,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:52" (2/3) ... [2021-12-15 16:44:58,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ddc400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:44:58, skipping insertion in model container [2021-12-15 16:44:58,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:44:58" (3/3) ... [2021-12-15 16:44:58,460 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test5-3.i [2021-12-15 16:44:58,464 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 16:44:58,464 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 932 error locations. [2021-12-15 16:44:58,509 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 16:44:58,513 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 16:44:58,513 INFO L340 AbstractCegarLoop]: Starting to check reachability of 932 error locations. [2021-12-15 16:44:58,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 1833 states, 893 states have (on average 2.2642777155655094) internal successors, (2022), 1824 states have internal predecessors, (2022), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 16:44:58,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-15 16:44:58,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:44:58,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-15 16:44:58,561 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-15 16:44:58,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:44:58,565 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2021-12-15 16:44:58,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:44:58,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625149369] [2021-12-15 16:44:58,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:44:58,574 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:44:58,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:44:58,577 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 16:44:58,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 16:44:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:44:58,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 16:44:58,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:44:58,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:44:58,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:44:58,843 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:44:58,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625149369] [2021-12-15 16:44:58,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625149369] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:44:58,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:44:58,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:44:58,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964047376] [2021-12-15 16:44:58,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:44:58,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 16:44:58,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:44:58,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 16:44:58,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 16:44:58,869 INFO L87 Difference]: Start difference. First operand has 1833 states, 893 states have (on average 2.2642777155655094) internal successors, (2022), 1824 states have internal predecessors, (2022), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:44:58,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:44:58,971 INFO L93 Difference]: Finished difference Result 1815 states and 1917 transitions. [2021-12-15 16:44:58,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 16:44:58,972 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-15 16:44:58,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:44:59,016 INFO L225 Difference]: With dead ends: 1815 [2021-12-15 16:44:59,016 INFO L226 Difference]: Without dead ends: 1813 [2021-12-15 16:44:59,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 16:44:59,021 INFO L933 BasicCegarLoop]: 1917 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:44:59,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1917 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:44:59,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2021-12-15 16:44:59,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1813. [2021-12-15 16:44:59,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 884 states have (on average 2.1414027149321266) internal successors, (1893), 1804 states have internal predecessors, (1893), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 16:44:59,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 1915 transitions. [2021-12-15 16:44:59,119 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 1915 transitions. Word has length 5 [2021-12-15 16:44:59,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:44:59,119 INFO L470 AbstractCegarLoop]: Abstraction has 1813 states and 1915 transitions. [2021-12-15 16:44:59,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:44:59,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 1915 transitions. [2021-12-15 16:44:59,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-15 16:44:59,120 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:44:59,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-15 16:44:59,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-15 16:44:59,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:44:59,327 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-15 16:44:59,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:44:59,328 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2021-12-15 16:44:59,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:44:59,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140264543] [2021-12-15 16:44:59,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:44:59,329 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:44:59,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:44:59,330 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 16:44:59,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-15 16:44:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:44:59,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 16:44:59,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:44:59,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 16:44:59,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:44:59,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:44:59,598 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:44:59,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140264543] [2021-12-15 16:44:59,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140264543] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:44:59,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:44:59,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:44:59,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863287565] [2021-12-15 16:44:59,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:44:59,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:44:59,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:44:59,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:44:59,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:44:59,608 INFO L87 Difference]: Start difference. First operand 1813 states and 1915 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:02,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:02,023 INFO L93 Difference]: Finished difference Result 2069 states and 2214 transitions. [2021-12-15 16:45:02,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:45:02,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-15 16:45:02,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:02,029 INFO L225 Difference]: With dead ends: 2069 [2021-12-15 16:45:02,029 INFO L226 Difference]: Without dead ends: 2069 [2021-12-15 16:45:02,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:02,030 INFO L933 BasicCegarLoop]: 1354 mSDtfsCounter, 1369 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:02,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1380 Valid, 1809 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-15 16:45:02,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2021-12-15 16:45:02,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1798. [2021-12-15 16:45:02,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 960 states have (on average 2.017708333333333) internal successors, (1937), 1789 states have internal predecessors, (1937), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 16:45:02,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 1959 transitions. [2021-12-15 16:45:02,067 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 1959 transitions. Word has length 5 [2021-12-15 16:45:02,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:02,068 INFO L470 AbstractCegarLoop]: Abstraction has 1798 states and 1959 transitions. [2021-12-15 16:45:02,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:02,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 1959 transitions. [2021-12-15 16:45:02,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-15 16:45:02,070 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:02,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-15 16:45:02,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-15 16:45:02,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:45:02,270 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-15 16:45:02,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:02,271 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2021-12-15 16:45:02,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:02,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104022876] [2021-12-15 16:45:02,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:02,271 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:02,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:02,272 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 16:45:02,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-15 16:45:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:02,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 16:45:02,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:02,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 16:45:02,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:45:02,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:02,426 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:02,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104022876] [2021-12-15 16:45:02,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104022876] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:02,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:02,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:45:02,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879278385] [2021-12-15 16:45:02,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:02,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:45:02,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:02,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:45:02,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:02,428 INFO L87 Difference]: Start difference. First operand 1798 states and 1959 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:05,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:05,689 INFO L93 Difference]: Finished difference Result 2318 states and 2529 transitions. [2021-12-15 16:45:05,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:45:05,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-15 16:45:05,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:05,695 INFO L225 Difference]: With dead ends: 2318 [2021-12-15 16:45:05,695 INFO L226 Difference]: Without dead ends: 2318 [2021-12-15 16:45:05,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:05,699 INFO L933 BasicCegarLoop]: 1746 mSDtfsCounter, 741 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:05,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 2548 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-15 16:45:05,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2021-12-15 16:45:05,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1954. [2021-12-15 16:45:05,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1126 states have (on average 1.992007104795737) internal successors, (2243), 1945 states have internal predecessors, (2243), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 16:45:05,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2265 transitions. [2021-12-15 16:45:05,734 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2265 transitions. Word has length 5 [2021-12-15 16:45:05,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:05,734 INFO L470 AbstractCegarLoop]: Abstraction has 1954 states and 2265 transitions. [2021-12-15 16:45:05,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:05,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2265 transitions. [2021-12-15 16:45:05,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-15 16:45:05,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:05,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-15 16:45:05,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-15 16:45:05,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:45:05,942 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-15 16:45:05,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:05,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2021-12-15 16:45:05,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:05,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966118688] [2021-12-15 16:45:05,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:05,944 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:05,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:05,945 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 16:45:05,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-15 16:45:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:06,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 16:45:06,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:06,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:45:06,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:06,071 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:06,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966118688] [2021-12-15 16:45:06,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966118688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:06,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:06,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:45:06,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632550408] [2021-12-15 16:45:06,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:06,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:45:06,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:06,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:45:06,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:06,072 INFO L87 Difference]: Start difference. First operand 1954 states and 2265 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:06,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:06,188 INFO L93 Difference]: Finished difference Result 3514 states and 4117 transitions. [2021-12-15 16:45:06,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:45:06,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-15 16:45:06,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:06,203 INFO L225 Difference]: With dead ends: 3514 [2021-12-15 16:45:06,204 INFO L226 Difference]: Without dead ends: 3514 [2021-12-15 16:45:06,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:06,205 INFO L933 BasicCegarLoop]: 2266 mSDtfsCounter, 1377 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 4069 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:06,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1388 Valid, 4069 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:45:06,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3514 states. [2021-12-15 16:45:06,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3514 to 1956. [2021-12-15 16:45:06,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1956 states, 1128 states have (on average 1.9902482269503545) internal successors, (2245), 1947 states have internal predecessors, (2245), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 16:45:06,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 2267 transitions. [2021-12-15 16:45:06,240 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 2267 transitions. Word has length 6 [2021-12-15 16:45:06,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:06,240 INFO L470 AbstractCegarLoop]: Abstraction has 1956 states and 2267 transitions. [2021-12-15 16:45:06,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:06,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 2267 transitions. [2021-12-15 16:45:06,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 16:45:06,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:06,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:45:06,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-15 16:45:06,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:45:06,449 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-15 16:45:06,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:06,450 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2021-12-15 16:45:06,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:06,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923071032] [2021-12-15 16:45:06,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:06,450 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:06,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:06,451 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 16:45:06,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-15 16:45:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:06,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 16:45:06,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:06,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:45:06,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:06,616 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:06,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923071032] [2021-12-15 16:45:06,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923071032] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:06,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:06,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:45:06,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223855001] [2021-12-15 16:45:06,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:06,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:45:06,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:06,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:45:06,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:06,620 INFO L87 Difference]: Start difference. First operand 1956 states and 2267 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:06,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:06,654 INFO L93 Difference]: Finished difference Result 1920 states and 2230 transitions. [2021-12-15 16:45:06,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:45:06,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-15 16:45:06,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:06,668 INFO L225 Difference]: With dead ends: 1920 [2021-12-15 16:45:06,668 INFO L226 Difference]: Without dead ends: 1920 [2021-12-15 16:45:06,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:06,669 INFO L933 BasicCegarLoop]: 1766 mSDtfsCounter, 1736 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:06,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1747 Valid, 1794 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:45:06,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2021-12-15 16:45:06,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1914. [2021-12-15 16:45:06,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1110 states have (on average 1.9837837837837837) internal successors, (2202), 1905 states have internal predecessors, (2202), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 16:45:06,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2224 transitions. [2021-12-15 16:45:06,695 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2224 transitions. Word has length 11 [2021-12-15 16:45:06,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:06,696 INFO L470 AbstractCegarLoop]: Abstraction has 1914 states and 2224 transitions. [2021-12-15 16:45:06,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:06,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2224 transitions. [2021-12-15 16:45:06,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-15 16:45:06,696 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:06,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:45:06,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-15 16:45:06,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:45:06,918 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-15 16:45:06,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:06,919 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2021-12-15 16:45:06,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:06,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181326146] [2021-12-15 16:45:06,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:06,920 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:06,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:06,922 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 16:45:06,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-15 16:45:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:07,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 16:45:07,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:07,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:45:07,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:07,102 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:07,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [181326146] [2021-12-15 16:45:07,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [181326146] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:07,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:07,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 16:45:07,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966445068] [2021-12-15 16:45:07,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:07,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:45:07,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:07,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:45:07,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:45:07,106 INFO L87 Difference]: Start difference. First operand 1914 states and 2224 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:07,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:07,162 INFO L93 Difference]: Finished difference Result 1899 states and 2202 transitions. [2021-12-15 16:45:07,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:45:07,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-15 16:45:07,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:07,168 INFO L225 Difference]: With dead ends: 1899 [2021-12-15 16:45:07,168 INFO L226 Difference]: Without dead ends: 1899 [2021-12-15 16:45:07,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 16:45:07,170 INFO L933 BasicCegarLoop]: 1721 mSDtfsCounter, 1707 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 3463 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:07,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1718 Valid, 3463 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:45:07,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2021-12-15 16:45:07,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1892. [2021-12-15 16:45:07,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1102 states have (on average 1.971869328493648) internal successors, (2173), 1883 states have internal predecessors, (2173), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 16:45:07,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 2195 transitions. [2021-12-15 16:45:07,195 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 2195 transitions. Word has length 13 [2021-12-15 16:45:07,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:07,196 INFO L470 AbstractCegarLoop]: Abstraction has 1892 states and 2195 transitions. [2021-12-15 16:45:07,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:07,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 2195 transitions. [2021-12-15 16:45:07,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-15 16:45:07,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:07,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:45:07,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-15 16:45:07,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:45:07,404 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-15 16:45:07,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:07,405 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2021-12-15 16:45:07,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:07,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918372665] [2021-12-15 16:45:07,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:07,405 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:07,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:07,406 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 16:45:07,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-15 16:45:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:07,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 16:45:07,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:07,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 16:45:07,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:45:07,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:07,661 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:07,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918372665] [2021-12-15 16:45:07,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918372665] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:07,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:07,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:45:07,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115153712] [2021-12-15 16:45:07,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:07,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:45:07,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:07,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:45:07,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:45:07,664 INFO L87 Difference]: Start difference. First operand 1892 states and 2195 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:07,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:45:07,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 16:45:07,818 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 164 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:07,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 73 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:45:07,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-15 16:45:08,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:45:08,031 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructOldVarsAssignment(OldVarsAssignmentCache.java:125) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getOldVarsAssignment(OldVarsAssignmentCache.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:387) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkReturn(IncrementalHoareTripleChecker.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkReturn(ChainingHoareTripleChecker.java:486) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkReturn(ChainingHoareTripleChecker.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkReturn(CachingHoareTripleChecker.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$ReturnSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:442) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:279) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.returnSuccessors(TotalizeNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.returnSuccessors(ComplementDeterministicNwa.java:142) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessors(ProductNwa.java:284) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessorsGivenHier(ProductNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addReturnsAndSuccessors(NestedWordAutomatonReachableStates.java:1118) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:950) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 16:45:08,035 INFO L158 Benchmark]: Toolchain (without parser) took 15784.41ms. Allocated memory was 58.7MB in the beginning and 184.5MB in the end (delta: 125.8MB). Free memory was 35.0MB in the beginning and 51.0MB in the end (delta: -16.0MB). Peak memory consumption was 108.8MB. Max. memory is 16.1GB. [2021-12-15 16:45:08,035 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 40.6MB in the beginning and 40.6MB in the end (delta: 46.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:45:08,035 INFO L158 Benchmark]: CACSL2BoogieTranslator took 730.02ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 34.8MB in the beginning and 49.9MB in the end (delta: -15.1MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2021-12-15 16:45:08,035 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.36ms. Allocated memory is still 77.6MB. Free memory was 49.9MB in the beginning and 40.1MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 16:45:08,035 INFO L158 Benchmark]: Boogie Preprocessor took 120.29ms. Allocated memory is still 77.6MB. Free memory was 39.8MB in the beginning and 44.9MB in the end (delta: -5.1MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2021-12-15 16:45:08,036 INFO L158 Benchmark]: RCFGBuilder took 5259.92ms. Allocated memory was 77.6MB in the beginning and 153.1MB in the end (delta: 75.5MB). Free memory was 44.9MB in the beginning and 81.5MB in the end (delta: -36.6MB). Peak memory consumption was 68.1MB. Max. memory is 16.1GB. [2021-12-15 16:45:08,036 INFO L158 Benchmark]: TraceAbstraction took 9580.15ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 81.5MB in the beginning and 51.0MB in the end (delta: 30.5MB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. [2021-12-15 16:45:08,037 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 40.6MB in the beginning and 40.6MB in the end (delta: 46.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 730.02ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 34.8MB in the beginning and 49.9MB in the end (delta: -15.1MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.36ms. Allocated memory is still 77.6MB. Free memory was 49.9MB in the beginning and 40.1MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 120.29ms. Allocated memory is still 77.6MB. Free memory was 39.8MB in the beginning and 44.9MB in the end (delta: -5.1MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * RCFGBuilder took 5259.92ms. Allocated memory was 77.6MB in the beginning and 153.1MB in the end (delta: 75.5MB). Free memory was 44.9MB in the beginning and 81.5MB in the end (delta: -36.6MB). Peak memory consumption was 68.1MB. Max. memory is 16.1GB. * TraceAbstraction took 9580.15ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 81.5MB in the beginning and 51.0MB in the end (delta: 30.5MB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 16:45:08,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable