./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 574ddb4e 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/ldv-memsafety/memleaks_test12-1.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 28b4a2248017400eafcc33919e1388faa83abd48459a3d9191abc0a1d3b17a56 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 21:08:08,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 21:08:08,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 21:08:09,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 21:08:09,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 21:08:09,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 21:08:09,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 21:08:09,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 21:08:09,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 21:08:09,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 21:08:09,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 21:08:09,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 21:08:09,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 21:08:09,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 21:08:09,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 21:08:09,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 21:08:09,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 21:08:09,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 21:08:09,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 21:08:09,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 21:08:09,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 21:08:09,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 21:08:09,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 21:08:09,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 21:08:09,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 21:08:09,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 21:08:09,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 21:08:09,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 21:08:09,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 21:08:09,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 21:08:09,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 21:08:09,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 21:08:09,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 21:08:09,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 21:08:09,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 21:08:09,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 21:08:09,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 21:08:09,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 21:08:09,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 21:08:09,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 21:08:09,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 21:08:09,043 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-18 21:08:09,060 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 21:08:09,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 21:08:09,066 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 21:08:09,066 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 21:08:09,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 21:08:09,067 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 21:08:09,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 21:08:09,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 21:08:09,068 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 21:08:09,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 21:08:09,069 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 21:08:09,069 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 21:08:09,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 21:08:09,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 21:08:09,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 21:08:09,070 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 21:08:09,070 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 21:08:09,070 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 21:08:09,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 21:08:09,070 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 21:08:09,071 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 21:08:09,071 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 21:08:09,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 21:08:09,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 21:08:09,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 21:08:09,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 21:08:09,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 21:08:09,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 21:08:09,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 21:08:09,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 21:08:09,072 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 21:08:09,073 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 21:08:09,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 21:08:09,073 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 21:08:09,073 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28b4a2248017400eafcc33919e1388faa83abd48459a3d9191abc0a1d3b17a56 [2023-02-18 21:08:09,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 21:08:09,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 21:08:09,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 21:08:09,290 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 21:08:09,290 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 21:08:09,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i [2023-02-18 21:08:10,476 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 21:08:10,727 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 21:08:10,728 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i [2023-02-18 21:08:10,747 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6c04ab41/4966a7e4dcf2442a801becfbaee54d14/FLAGd164120df [2023-02-18 21:08:10,761 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6c04ab41/4966a7e4dcf2442a801becfbaee54d14 [2023-02-18 21:08:10,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 21:08:10,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 21:08:10,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 21:08:10,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 21:08:10,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 21:08:10,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 09:08:10" (1/1) ... [2023-02-18 21:08:10,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a25912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:08:10, skipping insertion in model container [2023-02-18 21:08:10,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 09:08:10" (1/1) ... [2023-02-18 21:08:10,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 21:08:10,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 21:08:11,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 21:08:11,222 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-02-18 21:08:11,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e1fca2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:08:11, skipping insertion in model container [2023-02-18 21:08:11,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 21:08:11,225 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-18 21:08:11,226 INFO L158 Benchmark]: Toolchain (without parser) took 459.85ms. Allocated memory is still 123.7MB. Free memory was 77.5MB in the beginning and 62.5MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-18 21:08:11,227 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory was 51.3MB in the beginning and 51.2MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 21:08:11,228 INFO L158 Benchmark]: CACSL2BoogieTranslator took 457.13ms. Allocated memory is still 123.7MB. Free memory was 77.2MB in the beginning and 62.5MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-18 21:08:11,230 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory was 51.3MB in the beginning and 51.2MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 457.13ms. Allocated memory is still 123.7MB. Free memory was 77.2MB in the beginning and 62.5MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.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 28b4a2248017400eafcc33919e1388faa83abd48459a3d9191abc0a1d3b17a56 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 21:08:12,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 21:08:12,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 21:08:12,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 21:08:12,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 21:08:12,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 21:08:12,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 21:08:12,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 21:08:12,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 21:08:12,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 21:08:12,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 21:08:12,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 21:08:12,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 21:08:12,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 21:08:12,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 21:08:12,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 21:08:12,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 21:08:12,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 21:08:12,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 21:08:12,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 21:08:12,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 21:08:12,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 21:08:12,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 21:08:12,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 21:08:12,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 21:08:12,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 21:08:12,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 21:08:12,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 21:08:12,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 21:08:12,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 21:08:12,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 21:08:13,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 21:08:13,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 21:08:13,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 21:08:13,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 21:08:13,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 21:08:13,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 21:08:13,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 21:08:13,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 21:08:13,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 21:08:13,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 21:08:13,008 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-18 21:08:13,048 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 21:08:13,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 21:08:13,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 21:08:13,049 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 21:08:13,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 21:08:13,050 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 21:08:13,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 21:08:13,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 21:08:13,051 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 21:08:13,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 21:08:13,052 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 21:08:13,052 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 21:08:13,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 21:08:13,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 21:08:13,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 21:08:13,053 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 21:08:13,053 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 21:08:13,053 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 21:08:13,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 21:08:13,053 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 21:08:13,054 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-18 21:08:13,054 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-18 21:08:13,054 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 21:08:13,054 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 21:08:13,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 21:08:13,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 21:08:13,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 21:08:13,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 21:08:13,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 21:08:13,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 21:08:13,055 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-18 21:08:13,056 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-18 21:08:13,056 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 21:08:13,056 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 21:08:13,056 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 21:08:13,056 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-18 21:08:13,057 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 21:08:13,057 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28b4a2248017400eafcc33919e1388faa83abd48459a3d9191abc0a1d3b17a56 [2023-02-18 21:08:13,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 21:08:13,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 21:08:13,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 21:08:13,346 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 21:08:13,346 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 21:08:13,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i [2023-02-18 21:08:14,592 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 21:08:14,853 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 21:08:14,854 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i [2023-02-18 21:08:14,869 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab1b377db/b6b9cebb8bbe40529579ae93ab75ac20/FLAG514a4bf9a [2023-02-18 21:08:14,881 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab1b377db/b6b9cebb8bbe40529579ae93ab75ac20 [2023-02-18 21:08:14,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 21:08:14,886 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 21:08:14,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 21:08:14,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 21:08:14,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 21:08:14,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 09:08:14" (1/1) ... [2023-02-18 21:08:14,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e5f829e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:08:14, skipping insertion in model container [2023-02-18 21:08:14,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 09:08:14" (1/1) ... [2023-02-18 21:08:14,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 21:08:14,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 21:08:15,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 21:08:15,411 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-18 21:08:15,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 21:08:15,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 21:08:15,517 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 21:08:15,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 21:08:15,619 INFO L208 MainTranslator]: Completed translation [2023-02-18 21:08:15,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:08:15 WrapperNode [2023-02-18 21:08:15,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 21:08:15,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 21:08:15,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 21:08:15,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 21:08:15,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:08:15" (1/1) ... [2023-02-18 21:08:15,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:08:15" (1/1) ... [2023-02-18 21:08:15,695 INFO L138 Inliner]: procedures = 179, calls = 145, calls flagged for inlining = 33, calls inlined = 20, statements flattened = 331 [2023-02-18 21:08:15,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 21:08:15,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 21:08:15,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 21:08:15,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 21:08:15,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:08:15" (1/1) ... [2023-02-18 21:08:15,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:08:15" (1/1) ... [2023-02-18 21:08:15,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:08:15" (1/1) ... [2023-02-18 21:08:15,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:08:15" (1/1) ... [2023-02-18 21:08:15,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:08:15" (1/1) ... [2023-02-18 21:08:15,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:08:15" (1/1) ... [2023-02-18 21:08:15,733 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:08:15" (1/1) ... [2023-02-18 21:08:15,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:08:15" (1/1) ... [2023-02-18 21:08:15,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 21:08:15,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 21:08:15,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 21:08:15,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 21:08:15,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:08:15" (1/1) ... [2023-02-18 21:08:15,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 21:08:15,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 21:08:15,771 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 21:08:15,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 21:08:15,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-02-18 21:08:15,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-18 21:08:15,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-02-18 21:08:15,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-02-18 21:08:15,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-02-18 21:08:15,814 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-02-18 21:08:15,815 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-02-18 21:08:15,815 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-02-18 21:08:15,815 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-02-18 21:08:15,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-02-18 21:08:15,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-02-18 21:08:15,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-02-18 21:08:15,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-02-18 21:08:15,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-02-18 21:08:15,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 21:08:15,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 21:08:15,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2023-02-18 21:08:15,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2023-02-18 21:08:15,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 21:08:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-18 21:08:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2023-02-18 21:08:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-18 21:08:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-02-18 21:08:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 21:08:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-18 21:08:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-02-18 21:08:15,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2023-02-18 21:08:15,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 21:08:15,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 21:08:15,995 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 21:08:15,996 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 21:08:15,999 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-18 21:08:16,967 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 21:08:16,980 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 21:08:16,980 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-18 21:08:16,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 09:08:16 BoogieIcfgContainer [2023-02-18 21:08:16,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 21:08:16,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 21:08:16,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 21:08:16,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 21:08:16,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 09:08:14" (1/3) ... [2023-02-18 21:08:16,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ce1566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 09:08:16, skipping insertion in model container [2023-02-18 21:08:16,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:08:15" (2/3) ... [2023-02-18 21:08:16,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ce1566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 09:08:16, skipping insertion in model container [2023-02-18 21:08:16,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 09:08:16" (3/3) ... [2023-02-18 21:08:16,991 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test12-1.i [2023-02-18 21:08:17,006 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 21:08:17,007 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 124 error locations. [2023-02-18 21:08:17,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 21:08:17,063 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@33e0f80b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 21:08:17,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 124 error locations. [2023-02-18 21:08:17,067 INFO L276 IsEmpty]: Start isEmpty. Operand has 313 states, 171 states have (on average 1.8654970760233918) internal successors, (319), 294 states have internal predecessors, (319), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-18 21:08:17,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-18 21:08:17,074 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:08:17,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:08:17,075 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:08:17,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:08:17,083 INFO L85 PathProgramCache]: Analyzing trace with hash -297378988, now seen corresponding path program 1 times [2023-02-18 21:08:17,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:08:17,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510659714] [2023-02-18 21:08:17,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:08:17,096 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:17,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:08:17,100 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:08:17,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-18 21:08:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:08:17,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 21:08:17,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:08:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:08:17,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 21:08:17,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:08:17,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510659714] [2023-02-18 21:08:17,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510659714] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:08:17,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:08:17,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 21:08:17,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068200233] [2023-02-18 21:08:17,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:08:17,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 21:08:17,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:08:17,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 21:08:17,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 21:08:17,329 INFO L87 Difference]: Start difference. First operand has 313 states, 171 states have (on average 1.8654970760233918) internal successors, (319), 294 states have internal predecessors, (319), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 21:08:18,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:08:18,207 INFO L93 Difference]: Finished difference Result 412 states and 459 transitions. [2023-02-18 21:08:18,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 21:08:18,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-02-18 21:08:18,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:08:18,219 INFO L225 Difference]: With dead ends: 412 [2023-02-18 21:08:18,219 INFO L226 Difference]: Without dead ends: 408 [2023-02-18 21:08:18,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:08:18,224 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 299 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-18 21:08:18,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 506 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-18 21:08:18,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-02-18 21:08:18,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 344. [2023-02-18 21:08:18,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 200 states have (on average 1.83) internal successors, (366), 321 states have internal predecessors, (366), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) [2023-02-18 21:08:18,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 402 transitions. [2023-02-18 21:08:18,278 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 402 transitions. Word has length 11 [2023-02-18 21:08:18,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:08:18,279 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 402 transitions. [2023-02-18 21:08:18,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 21:08:18,279 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 402 transitions. [2023-02-18 21:08:18,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-18 21:08:18,280 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:08:18,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:08:18,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-02-18 21:08:18,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:18,481 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:08:18,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:08:18,482 INFO L85 PathProgramCache]: Analyzing trace with hash -297378987, now seen corresponding path program 1 times [2023-02-18 21:08:18,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:08:18,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754202966] [2023-02-18 21:08:18,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:08:18,483 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:18,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:08:18,485 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:08:18,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-18 21:08:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:08:18,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 21:08:18,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:08:18,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:08:18,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 21:08:18,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:08:18,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754202966] [2023-02-18 21:08:18,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754202966] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:08:18,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:08:18,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 21:08:18,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364732653] [2023-02-18 21:08:18,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:08:18,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 21:08:18,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:08:18,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 21:08:18,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 21:08:18,657 INFO L87 Difference]: Start difference. First operand 344 states and 402 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 21:08:19,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:08:19,381 INFO L93 Difference]: Finished difference Result 476 states and 564 transitions. [2023-02-18 21:08:19,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 21:08:19,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-02-18 21:08:19,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:08:19,384 INFO L225 Difference]: With dead ends: 476 [2023-02-18 21:08:19,385 INFO L226 Difference]: Without dead ends: 476 [2023-02-18 21:08:19,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:08:19,386 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 131 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-18 21:08:19,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 832 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-18 21:08:19,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-02-18 21:08:19,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 407. [2023-02-18 21:08:19,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 256 states have (on average 1.83203125) internal successors, (469), 376 states have internal predecessors, (469), 22 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (29), 23 states have call predecessors, (29), 22 states have call successors, (29) [2023-02-18 21:08:19,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 520 transitions. [2023-02-18 21:08:19,420 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 520 transitions. Word has length 11 [2023-02-18 21:08:19,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:08:19,421 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 520 transitions. [2023-02-18 21:08:19,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 21:08:19,421 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 520 transitions. [2023-02-18 21:08:19,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-18 21:08:19,422 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:08:19,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:08:19,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-18 21:08:19,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:19,625 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:08:19,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:08:19,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1184882668, now seen corresponding path program 1 times [2023-02-18 21:08:19,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:08:19,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544559849] [2023-02-18 21:08:19,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:08:19,627 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:19,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:08:19,628 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:08:19,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-18 21:08:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:08:19,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 21:08:19,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:08:19,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:08:19,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 21:08:19,708 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:08:19,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544559849] [2023-02-18 21:08:19,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544559849] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:08:19,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:08:19,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 21:08:19,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393599150] [2023-02-18 21:08:19,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:08:19,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 21:08:19,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:08:19,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 21:08:19,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:08:19,711 INFO L87 Difference]: Start difference. First operand 407 states and 520 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 21:08:19,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:08:19,876 INFO L93 Difference]: Finished difference Result 649 states and 797 transitions. [2023-02-18 21:08:19,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 21:08:19,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-02-18 21:08:19,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:08:19,883 INFO L225 Difference]: With dead ends: 649 [2023-02-18 21:08:19,883 INFO L226 Difference]: Without dead ends: 649 [2023-02-18 21:08:19,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:08:19,893 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 259 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:08:19,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 1486 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:08:19,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2023-02-18 21:08:19,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 392. [2023-02-18 21:08:19,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 241 states have (on average 1.8215767634854771) internal successors, (439), 362 states have internal predecessors, (439), 21 states have call successors, (21), 9 states have call predecessors, (21), 10 states have return successors, (34), 22 states have call predecessors, (34), 21 states have call successors, (34) [2023-02-18 21:08:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 494 transitions. [2023-02-18 21:08:19,929 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 494 transitions. Word has length 11 [2023-02-18 21:08:19,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:08:19,930 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 494 transitions. [2023-02-18 21:08:19,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 21:08:19,930 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 494 transitions. [2023-02-18 21:08:19,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-18 21:08:19,931 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:08:19,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:08:19,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-02-18 21:08:20,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:20,137 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:08:20,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:08:20,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1981613461, now seen corresponding path program 1 times [2023-02-18 21:08:20,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:08:20,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605396360] [2023-02-18 21:08:20,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:08:20,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:20,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:08:20,140 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:08:20,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-18 21:08:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:08:20,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 21:08:20,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:08:20,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-18 21:08:20,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:08:20,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 21:08:20,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:08:20,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605396360] [2023-02-18 21:08:20,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [605396360] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:08:20,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:08:20,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 21:08:20,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938882651] [2023-02-18 21:08:20,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:08:20,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 21:08:20,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:08:20,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 21:08:20,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 21:08:20,281 INFO L87 Difference]: Start difference. First operand 392 states and 494 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 21:08:21,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:08:21,165 INFO L93 Difference]: Finished difference Result 436 states and 541 transitions. [2023-02-18 21:08:21,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 21:08:21,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-02-18 21:08:21,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:08:21,169 INFO L225 Difference]: With dead ends: 436 [2023-02-18 21:08:21,169 INFO L226 Difference]: Without dead ends: 436 [2023-02-18 21:08:21,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-02-18 21:08:21,170 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 61 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-18 21:08:21,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1152 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-18 21:08:21,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-02-18 21:08:21,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 404. [2023-02-18 21:08:21,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 250 states have (on average 1.804) internal successors, (451), 372 states have internal predecessors, (451), 21 states have call successors, (21), 11 states have call predecessors, (21), 13 states have return successors, (34), 22 states have call predecessors, (34), 21 states have call successors, (34) [2023-02-18 21:08:21,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 506 transitions. [2023-02-18 21:08:21,184 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 506 transitions. Word has length 13 [2023-02-18 21:08:21,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:08:21,184 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 506 transitions. [2023-02-18 21:08:21,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 21:08:21,184 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 506 transitions. [2023-02-18 21:08:21,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-18 21:08:21,185 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:08:21,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:08:21,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-18 21:08:21,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:21,394 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:08:21,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:08:21,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1981613462, now seen corresponding path program 1 times [2023-02-18 21:08:21,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:08:21,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035347968] [2023-02-18 21:08:21,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:08:21,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:21,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:08:21,396 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:08:21,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-18 21:08:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:08:21,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-18 21:08:21,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:08:21,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-18 21:08:21,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-18 21:08:21,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:08:21,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 21:08:21,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:08:21,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035347968] [2023-02-18 21:08:21,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035347968] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:08:21,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:08:21,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 21:08:21,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848302357] [2023-02-18 21:08:21,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:08:21,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 21:08:21,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:08:21,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 21:08:21,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 21:08:21,537 INFO L87 Difference]: Start difference. First operand 404 states and 506 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 21:08:22,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:08:22,328 INFO L93 Difference]: Finished difference Result 424 states and 522 transitions. [2023-02-18 21:08:22,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 21:08:22,329 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-02-18 21:08:22,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:08:22,330 INFO L225 Difference]: With dead ends: 424 [2023-02-18 21:08:22,331 INFO L226 Difference]: Without dead ends: 424 [2023-02-18 21:08:22,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-02-18 21:08:22,332 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 34 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-18 21:08:22,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1291 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-18 21:08:22,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2023-02-18 21:08:22,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 413. [2023-02-18 21:08:22,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 259 states have (on average 1.7915057915057915) internal successors, (464), 381 states have internal predecessors, (464), 21 states have call successors, (21), 11 states have call predecessors, (21), 13 states have return successors, (34), 22 states have call predecessors, (34), 21 states have call successors, (34) [2023-02-18 21:08:22,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 519 transitions. [2023-02-18 21:08:22,343 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 519 transitions. Word has length 13 [2023-02-18 21:08:22,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:08:22,343 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 519 transitions. [2023-02-18 21:08:22,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 21:08:22,344 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 519 transitions. [2023-02-18 21:08:22,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 21:08:22,344 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:08:22,345 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:08:22,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-02-18 21:08:22,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:22,553 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr86ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:08:22,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:08:22,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1895308392, now seen corresponding path program 1 times [2023-02-18 21:08:22,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:08:22,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149265588] [2023-02-18 21:08:22,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:08:22,554 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:22,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:08:22,555 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:08:22,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-18 21:08:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:08:22,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 21:08:22,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:08:22,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:08:22,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 21:08:22,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:08:22,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149265588] [2023-02-18 21:08:22,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149265588] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:08:22,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:08:22,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 21:08:22,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385688635] [2023-02-18 21:08:22,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:08:22,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 21:08:22,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:08:22,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 21:08:22,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:08:22,639 INFO L87 Difference]: Start difference. First operand 413 states and 519 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 21:08:22,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:08:22,705 INFO L93 Difference]: Finished difference Result 351 states and 397 transitions. [2023-02-18 21:08:22,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 21:08:22,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-02-18 21:08:22,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:08:22,707 INFO L225 Difference]: With dead ends: 351 [2023-02-18 21:08:22,707 INFO L226 Difference]: Without dead ends: 351 [2023-02-18 21:08:22,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:08:22,708 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 10 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:08:22,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1342 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:08:22,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-02-18 21:08:22,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 345. [2023-02-18 21:08:22,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 199 states have (on average 1.7688442211055277) internal successors, (352), 320 states have internal predecessors, (352), 16 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (19), 17 states have call predecessors, (19), 16 states have call successors, (19) [2023-02-18 21:08:22,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 387 transitions. [2023-02-18 21:08:22,717 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 387 transitions. Word has length 17 [2023-02-18 21:08:22,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:08:22,718 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 387 transitions. [2023-02-18 21:08:22,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 21:08:22,718 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 387 transitions. [2023-02-18 21:08:22,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 21:08:22,719 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:08:22,719 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:08:22,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-02-18 21:08:22,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:22,928 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr86ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:08:22,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:08:22,928 INFO L85 PathProgramCache]: Analyzing trace with hash -2106255897, now seen corresponding path program 1 times [2023-02-18 21:08:22,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:08:22,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907944980] [2023-02-18 21:08:22,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:08:22,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:22,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:08:22,932 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:08:22,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-18 21:08:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:08:22,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 21:08:22,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:08:23,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 21:08:23,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:08:23,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 21:08:23,020 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:08:23,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907944980] [2023-02-18 21:08:23,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907944980] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 21:08:23,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 21:08:23,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2023-02-18 21:08:23,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694343400] [2023-02-18 21:08:23,021 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 21:08:23,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 21:08:23,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:08:23,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 21:08:23,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:08:23,023 INFO L87 Difference]: Start difference. First operand 345 states and 387 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 21:08:23,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:08:23,083 INFO L93 Difference]: Finished difference Result 344 states and 386 transitions. [2023-02-18 21:08:23,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 21:08:23,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-02-18 21:08:23,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:08:23,085 INFO L225 Difference]: With dead ends: 344 [2023-02-18 21:08:23,085 INFO L226 Difference]: Without dead ends: 344 [2023-02-18 21:08:23,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:08:23,086 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 256 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:08:23,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 1052 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:08:23,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-02-18 21:08:23,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2023-02-18 21:08:23,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 199 states have (on average 1.763819095477387) internal successors, (351), 319 states have internal predecessors, (351), 16 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (19), 17 states have call predecessors, (19), 16 states have call successors, (19) [2023-02-18 21:08:23,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 386 transitions. [2023-02-18 21:08:23,097 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 386 transitions. Word has length 17 [2023-02-18 21:08:23,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:08:23,098 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 386 transitions. [2023-02-18 21:08:23,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 21:08:23,098 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 386 transitions. [2023-02-18 21:08:23,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 21:08:23,099 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:08:23,099 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:08:23,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-02-18 21:08:23,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:23,308 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:08:23,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:08:23,309 INFO L85 PathProgramCache]: Analyzing trace with hash -2106256148, now seen corresponding path program 1 times [2023-02-18 21:08:23,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:08:23,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39483382] [2023-02-18 21:08:23,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:08:23,309 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:23,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:08:23,310 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:08:23,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-18 21:08:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:08:23,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 21:08:23,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:08:23,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 21:08:23,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 21:08:23,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:08:23,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39483382] [2023-02-18 21:08:23,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39483382] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:08:23,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:08:23,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 21:08:23,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090252971] [2023-02-18 21:08:23,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:08:23,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 21:08:23,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:08:23,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 21:08:23,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:08:23,395 INFO L87 Difference]: Start difference. First operand 344 states and 386 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 21:08:23,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:08:23,450 INFO L93 Difference]: Finished difference Result 388 states and 436 transitions. [2023-02-18 21:08:23,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 21:08:23,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-02-18 21:08:23,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:08:23,456 INFO L225 Difference]: With dead ends: 388 [2023-02-18 21:08:23,456 INFO L226 Difference]: Without dead ends: 388 [2023-02-18 21:08:23,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:08:23,457 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 40 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 21:08:23,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1375 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 21:08:23,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-02-18 21:08:23,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 346. [2023-02-18 21:08:23,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 201 states have (on average 1.756218905472637) internal successors, (353), 320 states have internal predecessors, (353), 16 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (19), 18 states have call predecessors, (19), 16 states have call successors, (19) [2023-02-18 21:08:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 388 transitions. [2023-02-18 21:08:23,470 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 388 transitions. Word has length 17 [2023-02-18 21:08:23,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:08:23,470 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 388 transitions. [2023-02-18 21:08:23,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 21:08:23,471 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 388 transitions. [2023-02-18 21:08:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 21:08:23,475 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:08:23,475 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:08:23,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-02-18 21:08:23,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:23,686 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:08:23,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:08:23,686 INFO L85 PathProgramCache]: Analyzing trace with hash -2134885299, now seen corresponding path program 1 times [2023-02-18 21:08:23,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:08:23,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738200720] [2023-02-18 21:08:23,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:08:23,687 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:23,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:08:23,689 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:08:23,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-02-18 21:08:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:08:23,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 21:08:23,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:08:23,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 21:08:23,789 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_12 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_12))) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2023-02-18 21:08:23,804 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:08:23,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2023-02-18 21:08:23,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-02-18 21:08:23,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:08:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:08:23,924 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:08:23,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738200720] [2023-02-18 21:08:23,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738200720] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 21:08:23,924 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 21:08:23,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2023-02-18 21:08:23,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979902494] [2023-02-18 21:08:23,925 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 21:08:23,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 21:08:23,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:08:23,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 21:08:23,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2023-02-18 21:08:23,926 INFO L87 Difference]: Start difference. First operand 346 states and 388 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 21:08:24,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:08:24,965 INFO L93 Difference]: Finished difference Result 381 states and 424 transitions. [2023-02-18 21:08:24,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 21:08:24,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2023-02-18 21:08:24,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:08:24,967 INFO L225 Difference]: With dead ends: 381 [2023-02-18 21:08:24,967 INFO L226 Difference]: Without dead ends: 381 [2023-02-18 21:08:24,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=41, Unknown=1, NotChecked=12, Total=72 [2023-02-18 21:08:24,968 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 233 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 394 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-18 21:08:24,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 852 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 707 Invalid, 0 Unknown, 394 Unchecked, 1.0s Time] [2023-02-18 21:08:24,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-02-18 21:08:24,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 348. [2023-02-18 21:08:24,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 205 states have (on average 1.7317073170731707) internal successors, (355), 322 states have internal predecessors, (355), 16 states have call successors, (16), 9 states have call predecessors, (16), 11 states have return successors, (20), 18 states have call predecessors, (20), 16 states have call successors, (20) [2023-02-18 21:08:24,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 391 transitions. [2023-02-18 21:08:24,976 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 391 transitions. Word has length 17 [2023-02-18 21:08:24,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:08:24,976 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 391 transitions. [2023-02-18 21:08:24,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 21:08:24,976 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 391 transitions. [2023-02-18 21:08:24,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 21:08:24,977 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:08:24,977 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:08:24,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-02-18 21:08:25,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:25,177 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:08:25,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:08:25,178 INFO L85 PathProgramCache]: Analyzing trace with hash -2134885298, now seen corresponding path program 1 times [2023-02-18 21:08:25,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:08:25,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121393877] [2023-02-18 21:08:25,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:08:25,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:25,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:08:25,180 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:08:25,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-02-18 21:08:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:08:25,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-18 21:08:25,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:08:25,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 21:08:25,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 21:08:25,319 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_23 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_23))))) is different from true [2023-02-18 21:08:25,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 21:08:25,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-18 21:08:25,351 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:08:25,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-18 21:08:25,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-02-18 21:08:25,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:08:27,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:08:27,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121393877] [2023-02-18 21:08:27,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121393877] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 21:08:27,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1434170748] [2023-02-18 21:08:27,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:08:27,455 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-18 21:08:27,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-18 21:08:27,456 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-02-18 21:08:27,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-02-18 21:08:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:08:27,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-18 21:08:27,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:08:27,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 21:08:27,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 21:08:27,599 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_33 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_33))) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2023-02-18 21:08:27,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 21:08:27,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-18 21:08:27,612 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:08:27,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-18 21:08:27,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-02-18 21:08:27,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:08:27,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1434170748] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 21:08:27,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 21:08:27,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2023-02-18 21:08:27,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015226218] [2023-02-18 21:08:27,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 21:08:27,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 21:08:27,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:08:27,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 21:08:27,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=70, Unknown=3, NotChecked=34, Total=132 [2023-02-18 21:08:27,685 INFO L87 Difference]: Start difference. First operand 348 states and 391 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 21:08:30,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:08:30,158 INFO L93 Difference]: Finished difference Result 698 states and 811 transitions. [2023-02-18 21:08:30,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 21:08:30,159 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2023-02-18 21:08:30,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:08:30,162 INFO L225 Difference]: With dead ends: 698 [2023-02-18 21:08:30,162 INFO L226 Difference]: Without dead ends: 698 [2023-02-18 21:08:30,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=33, Invalid=104, Unknown=3, NotChecked=42, Total=182 [2023-02-18 21:08:30,163 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 518 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 1586 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 2732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1082 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-02-18 21:08:30,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1474 Invalid, 2732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1586 Invalid, 0 Unknown, 1082 Unchecked, 2.4s Time] [2023-02-18 21:08:30,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2023-02-18 21:08:30,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 360. [2023-02-18 21:08:30,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 215 states have (on average 1.716279069767442) internal successors, (369), 331 states have internal predecessors, (369), 18 states have call successors, (18), 9 states have call predecessors, (18), 12 states have return successors, (30), 21 states have call predecessors, (30), 18 states have call successors, (30) [2023-02-18 21:08:30,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 417 transitions. [2023-02-18 21:08:30,174 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 417 transitions. Word has length 17 [2023-02-18 21:08:30,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:08:30,174 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 417 transitions. [2023-02-18 21:08:30,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 21:08:30,175 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 417 transitions. [2023-02-18 21:08:30,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-18 21:08:30,175 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:08:30,175 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:08:30,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-02-18 21:08:30,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-02-18 21:08:30,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-02-18 21:08:30,585 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr87ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:08:30,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:08:30,585 INFO L85 PathProgramCache]: Analyzing trace with hash -869422937, now seen corresponding path program 1 times [2023-02-18 21:08:30,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:08:30,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941212850] [2023-02-18 21:08:30,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:08:30,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:30,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:08:30,586 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:08:30,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-02-18 21:08:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:08:30,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 21:08:30,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:08:30,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:08:30,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:08:30,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 21:08:30,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:08:30,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941212850] [2023-02-18 21:08:30,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941212850] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 21:08:30,774 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 21:08:30,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2023-02-18 21:08:30,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785574426] [2023-02-18 21:08:30,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 21:08:30,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 21:08:30,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:08:30,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 21:08:30,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-18 21:08:30,776 INFO L87 Difference]: Start difference. First operand 360 states and 417 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 21:08:31,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:08:31,183 INFO L93 Difference]: Finished difference Result 363 states and 418 transitions. [2023-02-18 21:08:31,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 21:08:31,184 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 18 [2023-02-18 21:08:31,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:08:31,185 INFO L225 Difference]: With dead ends: 363 [2023-02-18 21:08:31,185 INFO L226 Difference]: Without dead ends: 363 [2023-02-18 21:08:31,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-02-18 21:08:31,186 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 814 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 21:08:31,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 1214 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 21:08:31,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-02-18 21:08:31,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 359. [2023-02-18 21:08:31,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 215 states have (on average 1.7069767441860466) internal successors, (367), 330 states have internal predecessors, (367), 18 states have call successors, (18), 9 states have call predecessors, (18), 12 states have return successors, (30), 21 states have call predecessors, (30), 18 states have call successors, (30) [2023-02-18 21:08:31,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 415 transitions. [2023-02-18 21:08:31,195 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 415 transitions. Word has length 18 [2023-02-18 21:08:31,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:08:31,195 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 415 transitions. [2023-02-18 21:08:31,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 21:08:31,195 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 415 transitions. [2023-02-18 21:08:31,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-18 21:08:31,196 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:08:31,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:08:31,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-02-18 21:08:31,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:31,405 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr103ASSERT_VIOLATIONMEMORY_LEAK === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:08:31,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:08:31,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1883109288, now seen corresponding path program 1 times [2023-02-18 21:08:31,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:08:31,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914855437] [2023-02-18 21:08:31,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:08:31,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:31,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:08:31,407 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:08:31,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-02-18 21:08:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:08:31,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 21:08:31,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:08:31,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:08:31,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 21:08:31,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:08:31,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914855437] [2023-02-18 21:08:31,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914855437] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:08:31,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:08:31,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 21:08:31,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989970988] [2023-02-18 21:08:31,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:08:31,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 21:08:31,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:08:31,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 21:08:31,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 21:08:31,499 INFO L87 Difference]: Start difference. First operand 359 states and 415 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 21:08:31,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:08:31,990 INFO L93 Difference]: Finished difference Result 362 states and 417 transitions. [2023-02-18 21:08:31,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 21:08:31,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-02-18 21:08:31,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:08:31,992 INFO L225 Difference]: With dead ends: 362 [2023-02-18 21:08:31,993 INFO L226 Difference]: Without dead ends: 349 [2023-02-18 21:08:31,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 21:08:31,993 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 41 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 21:08:31,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 661 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 21:08:31,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-02-18 21:08:31,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2023-02-18 21:08:31,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 206 states have (on average 1.733009708737864) internal successors, (357), 321 states have internal predecessors, (357), 18 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (29), 20 states have call predecessors, (29), 18 states have call successors, (29) [2023-02-18 21:08:32,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 404 transitions. [2023-02-18 21:08:32,001 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 404 transitions. Word has length 18 [2023-02-18 21:08:32,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:08:32,001 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 404 transitions. [2023-02-18 21:08:32,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 21:08:32,001 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 404 transitions. [2023-02-18 21:08:32,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-18 21:08:32,002 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:08:32,002 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:08:32,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-02-18 21:08:32,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:32,211 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:08:32,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:08:32,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1969475052, now seen corresponding path program 1 times [2023-02-18 21:08:32,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:08:32,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095079445] [2023-02-18 21:08:32,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:08:32,212 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:32,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:08:32,214 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:08:32,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-02-18 21:08:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:08:32,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 21:08:32,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:08:32,310 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:08:32,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2023-02-18 21:08:32,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-02-18 21:08:32,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 21:08:32,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:08:32,372 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:08:32,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095079445] [2023-02-18 21:08:32,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095079445] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 21:08:32,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1697512709] [2023-02-18 21:08:32,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:08:32,373 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-18 21:08:32,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-18 21:08:32,374 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-02-18 21:08:32,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-02-18 21:08:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:08:32,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-18 21:08:32,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:08:32,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-02-18 21:08:32,528 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:08:32,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2023-02-18 21:08:32,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-02-18 21:08:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 21:08:32,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:08:32,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1697512709] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 21:08:32,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 21:08:32,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-02-18 21:08:32,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869316804] [2023-02-18 21:08:32,601 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 21:08:32,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 21:08:32,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:08:32,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 21:08:32,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-02-18 21:08:32,603 INFO L87 Difference]: Start difference. First operand 349 states and 404 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 21:08:33,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:08:33,714 INFO L93 Difference]: Finished difference Result 426 states and 479 transitions. [2023-02-18 21:08:33,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 21:08:33,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2023-02-18 21:08:33,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:08:33,716 INFO L225 Difference]: With dead ends: 426 [2023-02-18 21:08:33,716 INFO L226 Difference]: Without dead ends: 426 [2023-02-18 21:08:33,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-02-18 21:08:33,717 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 440 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 70 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:08:33,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 838 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 741 Invalid, 2 Unknown, 0 Unchecked, 1.1s Time] [2023-02-18 21:08:33,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2023-02-18 21:08:33,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 351. [2023-02-18 21:08:33,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 208 states have (on average 1.7307692307692308) internal successors, (360), 323 states have internal predecessors, (360), 18 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (29), 20 states have call predecessors, (29), 18 states have call successors, (29) [2023-02-18 21:08:33,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 407 transitions. [2023-02-18 21:08:33,724 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 407 transitions. Word has length 21 [2023-02-18 21:08:33,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:08:33,725 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 407 transitions. [2023-02-18 21:08:33,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 21:08:33,725 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 407 transitions. [2023-02-18 21:08:33,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-18 21:08:33,725 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:08:33,725 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:08:33,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2023-02-18 21:08:33,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-02-18 21:08:34,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:34,131 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:08:34,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:08:34,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1969475053, now seen corresponding path program 1 times [2023-02-18 21:08:34,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:08:34,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434155800] [2023-02-18 21:08:34,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:08:34,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:08:34,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:08:34,133 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:08:34,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-02-18 21:08:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:08:34,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-18 21:08:34,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:08:36,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 21:08:36,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-18 21:08:38,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:08:38,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:08:38,390 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:08:38,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1434155800] [2023-02-18 21:08:38,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1434155800] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 21:08:38,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [977235666] [2023-02-18 21:08:38,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:08:38,391 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-18 21:08:38,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-18 21:08:38,392 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-02-18 21:08:38,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-02-18 21:08:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:08:38,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-18 21:08:38,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:08:38,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-02-18 21:08:40,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 21:08:40,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-18 21:08:40,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:08:40,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:08:42,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [977235666] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 21:08:42,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 21:08:42,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-02-18 21:08:42,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277620428] [2023-02-18 21:08:42,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 21:08:42,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 21:08:42,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:08:42,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 21:08:42,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=60, Unknown=3, NotChecked=0, Total=90 [2023-02-18 21:08:42,649 INFO L87 Difference]: Start difference. First operand 351 states and 407 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 21:08:44,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 21:08:48,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 21:08:50,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 21:08:52,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 21:08:54,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 21:08:56,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 21:08:58,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 21:09:05,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 21:09:07,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 21:09:09,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 21:09:12,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 21:09:14,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 21:09:14,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:09:14,458 INFO L93 Difference]: Finished difference Result 419 states and 472 transitions. [2023-02-18 21:09:14,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 21:09:14,459 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2023-02-18 21:09:14,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:09:14,460 INFO L225 Difference]: With dead ends: 419 [2023-02-18 21:09:14,460 INFO L226 Difference]: Without dead ends: 419 [2023-02-18 21:09:14,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=85, Invalid=149, Unknown=6, NotChecked=0, Total=240 [2023-02-18 21:09:14,461 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 527 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 65 mSolverCounterUnsat, 154 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 154 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.7s IncrementalHoareTripleChecker+Time [2023-02-18 21:09:14,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 436 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 564 Invalid, 154 Unknown, 0 Unchecked, 25.7s Time] [2023-02-18 21:09:14,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-02-18 21:09:14,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 350. [2023-02-18 21:09:14,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 208 states have (on average 1.7211538461538463) internal successors, (358), 322 states have internal predecessors, (358), 18 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (29), 20 states have call predecessors, (29), 18 states have call successors, (29) [2023-02-18 21:09:14,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 405 transitions. [2023-02-18 21:09:14,468 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 405 transitions. Word has length 21 [2023-02-18 21:09:14,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:09:14,469 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 405 transitions. [2023-02-18 21:09:14,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 21:09:14,469 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 405 transitions. [2023-02-18 21:09:14,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-18 21:09:14,470 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:09:14,470 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:09:14,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-02-18 21:09:14,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2023-02-18 21:09:14,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-02-18 21:09:14,879 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:09:14,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:09:14,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1415040467, now seen corresponding path program 1 times [2023-02-18 21:09:14,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:09:14,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470531753] [2023-02-18 21:09:14,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:09:14,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:09:14,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:09:14,881 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:09:14,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-02-18 21:09:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:09:14,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 21:09:14,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:09:14,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-18 21:09:14,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 21:09:14,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 21:09:14,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:09:14,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470531753] [2023-02-18 21:09:14,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470531753] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:09:14,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:09:14,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 21:09:14,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698146896] [2023-02-18 21:09:14,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:09:14,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 21:09:14,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:09:14,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 21:09:14,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:09:14,991 INFO L87 Difference]: Start difference. First operand 350 states and 405 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 21:09:15,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:09:15,576 INFO L93 Difference]: Finished difference Result 390 states and 447 transitions. [2023-02-18 21:09:15,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 21:09:15,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-02-18 21:09:15,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:09:15,578 INFO L225 Difference]: With dead ends: 390 [2023-02-18 21:09:15,578 INFO L226 Difference]: Without dead ends: 390 [2023-02-18 21:09:15,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-18 21:09:15,579 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 59 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-18 21:09:15,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1036 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-18 21:09:15,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-02-18 21:09:15,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 352. [2023-02-18 21:09:15,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 210 states have (on average 1.7190476190476192) internal successors, (361), 324 states have internal predecessors, (361), 18 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (29), 20 states have call predecessors, (29), 18 states have call successors, (29) [2023-02-18 21:09:15,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 408 transitions. [2023-02-18 21:09:15,586 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 408 transitions. Word has length 23 [2023-02-18 21:09:15,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:09:15,586 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 408 transitions. [2023-02-18 21:09:15,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 21:09:15,587 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 408 transitions. [2023-02-18 21:09:15,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-18 21:09:15,587 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:09:15,587 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:09:15,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-02-18 21:09:15,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:09:15,796 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:09:15,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:09:15,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1415040466, now seen corresponding path program 1 times [2023-02-18 21:09:15,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:09:15,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357013159] [2023-02-18 21:09:15,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:09:15,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:09:15,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:09:15,798 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:09:15,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-02-18 21:09:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:09:15,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-18 21:09:15,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:09:15,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-18 21:09:15,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-18 21:09:15,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 21:09:15,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 21:09:15,921 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:09:15,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357013159] [2023-02-18 21:09:15,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357013159] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:09:15,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:09:15,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 21:09:15,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178032237] [2023-02-18 21:09:15,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:09:15,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 21:09:15,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:09:15,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 21:09:15,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:09:15,924 INFO L87 Difference]: Start difference. First operand 352 states and 408 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 21:09:16,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:09:16,572 INFO L93 Difference]: Finished difference Result 375 states and 432 transitions. [2023-02-18 21:09:16,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 21:09:16,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-02-18 21:09:16,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:09:16,574 INFO L225 Difference]: With dead ends: 375 [2023-02-18 21:09:16,574 INFO L226 Difference]: Without dead ends: 375 [2023-02-18 21:09:16,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-18 21:09:16,575 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 41 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-18 21:09:16,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 1075 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-18 21:09:16,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-02-18 21:09:16,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 352. [2023-02-18 21:09:16,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 210 states have (on average 1.7142857142857142) internal successors, (360), 324 states have internal predecessors, (360), 18 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (29), 20 states have call predecessors, (29), 18 states have call successors, (29) [2023-02-18 21:09:16,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 407 transitions. [2023-02-18 21:09:16,582 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 407 transitions. Word has length 23 [2023-02-18 21:09:16,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:09:16,582 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 407 transitions. [2023-02-18 21:09:16,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 21:09:16,582 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 407 transitions. [2023-02-18 21:09:16,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-18 21:09:16,583 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:09:16,583 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:09:16,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-02-18 21:09:16,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:09:16,792 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr83ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:09:16,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:09:16,792 INFO L85 PathProgramCache]: Analyzing trace with hash -412937067, now seen corresponding path program 1 times [2023-02-18 21:09:16,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:09:16,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723280328] [2023-02-18 21:09:16,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:09:16,793 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:09:16,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:09:16,793 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:09:16,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-02-18 21:09:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:09:16,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 21:09:16,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:09:16,885 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-18 21:09:16,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:09:16,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-18 21:09:16,900 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:09:16,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723280328] [2023-02-18 21:09:16,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723280328] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 21:09:16,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 21:09:16,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2023-02-18 21:09:16,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56417187] [2023-02-18 21:09:16,901 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 21:09:16,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 21:09:16,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:09:16,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 21:09:16,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:09:16,902 INFO L87 Difference]: Start difference. First operand 352 states and 407 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 21:09:16,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:09:16,980 INFO L93 Difference]: Finished difference Result 351 states and 406 transitions. [2023-02-18 21:09:16,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 21:09:16,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2023-02-18 21:09:16,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:09:16,982 INFO L225 Difference]: With dead ends: 351 [2023-02-18 21:09:16,982 INFO L226 Difference]: Without dead ends: 351 [2023-02-18 21:09:16,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:09:16,983 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 245 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:09:16,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1046 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:09:16,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-02-18 21:09:16,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2023-02-18 21:09:16,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 210 states have (on average 1.7095238095238094) internal successors, (359), 323 states have internal predecessors, (359), 18 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (29), 20 states have call predecessors, (29), 18 states have call successors, (29) [2023-02-18 21:09:16,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 406 transitions. [2023-02-18 21:09:16,991 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 406 transitions. Word has length 25 [2023-02-18 21:09:16,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:09:16,991 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 406 transitions. [2023-02-18 21:09:16,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 21:09:16,992 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 406 transitions. [2023-02-18 21:09:16,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-18 21:09:16,992 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:09:16,992 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:09:17,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-02-18 21:09:17,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:09:17,193 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:09:17,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:09:17,194 INFO L85 PathProgramCache]: Analyzing trace with hash -412937301, now seen corresponding path program 1 times [2023-02-18 21:09:17,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:09:17,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924248] [2023-02-18 21:09:17,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:09:17,194 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:09:17,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:09:17,195 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:09:17,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-02-18 21:09:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:09:17,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 21:09:17,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:09:17,285 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-18 21:09:17,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 21:09:17,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:09:17,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924248] [2023-02-18 21:09:17,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924248] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:09:17,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:09:17,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 21:09:17,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444760047] [2023-02-18 21:09:17,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:09:17,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 21:09:17,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:09:17,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 21:09:17,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:09:17,288 INFO L87 Difference]: Start difference. First operand 351 states and 406 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-18 21:09:17,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:09:17,338 INFO L93 Difference]: Finished difference Result 392 states and 444 transitions. [2023-02-18 21:09:17,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 21:09:17,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-02-18 21:09:17,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:09:17,340 INFO L225 Difference]: With dead ends: 392 [2023-02-18 21:09:17,340 INFO L226 Difference]: Without dead ends: 392 [2023-02-18 21:09:17,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:09:17,341 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 43 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 21:09:17,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1426 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 21:09:17,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2023-02-18 21:09:17,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 349. [2023-02-18 21:09:17,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 209 states have (on average 1.6985645933014355) internal successors, (355), 321 states have internal predecessors, (355), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (27), 20 states have call predecessors, (27), 17 states have call successors, (27) [2023-02-18 21:09:17,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 399 transitions. [2023-02-18 21:09:17,348 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 399 transitions. Word has length 25 [2023-02-18 21:09:17,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:09:17,348 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 399 transitions. [2023-02-18 21:09:17,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-18 21:09:17,348 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 399 transitions. [2023-02-18 21:09:17,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-18 21:09:17,352 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:09:17,352 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:09:17,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-02-18 21:09:17,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:09:17,561 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:09:17,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:09:17,561 INFO L85 PathProgramCache]: Analyzing trace with hash -441566452, now seen corresponding path program 1 times [2023-02-18 21:09:17,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:09:17,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781736776] [2023-02-18 21:09:17,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:09:17,562 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:09:17,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:09:17,562 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:09:17,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-02-18 21:09:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:09:17,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 21:09:17,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:09:17,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 21:09:17,666 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)))) is different from true [2023-02-18 21:09:17,671 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:09:17,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2023-02-18 21:09:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2023-02-18 21:09:17,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:09:17,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 21:09:17,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:09:17,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781736776] [2023-02-18 21:09:17,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781736776] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 21:09:17,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 21:09:17,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2023-02-18 21:09:17,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806537418] [2023-02-18 21:09:17,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 21:09:17,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 21:09:17,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:09:17,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 21:09:17,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2023-02-18 21:09:17,754 INFO L87 Difference]: Start difference. First operand 349 states and 399 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-18 21:09:18,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:09:18,919 INFO L93 Difference]: Finished difference Result 379 states and 425 transitions. [2023-02-18 21:09:18,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 21:09:18,920 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2023-02-18 21:09:18,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:09:18,921 INFO L225 Difference]: With dead ends: 379 [2023-02-18 21:09:18,921 INFO L226 Difference]: Without dead ends: 379 [2023-02-18 21:09:18,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=41, Unknown=1, NotChecked=12, Total=72 [2023-02-18 21:09:18,922 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 183 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 350 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:09:18,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1016 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 821 Invalid, 0 Unknown, 350 Unchecked, 1.1s Time] [2023-02-18 21:09:18,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-02-18 21:09:18,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 351. [2023-02-18 21:09:18,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 212 states have (on average 1.6886792452830188) internal successors, (358), 323 states have internal predecessors, (358), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (27), 20 states have call predecessors, (27), 17 states have call successors, (27) [2023-02-18 21:09:18,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 402 transitions. [2023-02-18 21:09:18,941 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 402 transitions. Word has length 25 [2023-02-18 21:09:18,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:09:18,942 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 402 transitions. [2023-02-18 21:09:18,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-18 21:09:18,942 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 402 transitions. [2023-02-18 21:09:18,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-18 21:09:18,942 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:09:18,942 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:09:18,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-02-18 21:09:19,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:09:19,152 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:09:19,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:09:19,152 INFO L85 PathProgramCache]: Analyzing trace with hash -441566451, now seen corresponding path program 1 times [2023-02-18 21:09:19,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:09:19,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063289200] [2023-02-18 21:09:19,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:09:19,153 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:09:19,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:09:19,154 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:09:19,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-02-18 21:09:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:09:19,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-18 21:09:19,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:09:19,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 21:09:19,289 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| |c_ldv_malloc_#in~size|))) is different from true [2023-02-18 21:09:19,295 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:09:19,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2023-02-18 21:09:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2023-02-18 21:09:19,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:09:19,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:09:19,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063289200] [2023-02-18 21:09:19,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063289200] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 21:09:19,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [935021326] [2023-02-18 21:09:19,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:09:19,416 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-18 21:09:19,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-18 21:09:19,417 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-02-18 21:09:19,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-02-18 21:09:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:09:19,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-18 21:09:19,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:09:19,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 21:09:19,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 21:09:19,661 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_134 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_134))) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2023-02-18 21:09:19,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 21:09:19,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-18 21:09:19,677 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:09:19,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-18 21:09:19,679 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2023-02-18 21:09:19,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:09:20,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [935021326] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 21:09:20,985 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 21:09:20,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-02-18 21:09:20,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687757621] [2023-02-18 21:09:20,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 21:09:20,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-18 21:09:20,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:09:20,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-18 21:09:20,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=173, Unknown=2, NotChecked=54, Total=272 [2023-02-18 21:09:20,986 INFO L87 Difference]: Start difference. First operand 351 states and 402 transitions. Second operand has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-18 21:09:24,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:09:24,982 INFO L93 Difference]: Finished difference Result 681 states and 789 transitions. [2023-02-18 21:09:24,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 21:09:24,983 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 25 [2023-02-18 21:09:24,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:09:24,985 INFO L225 Difference]: With dead ends: 681 [2023-02-18 21:09:24,985 INFO L226 Difference]: Without dead ends: 681 [2023-02-18 21:09:24,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=54, Invalid=224, Unknown=2, NotChecked=62, Total=342 [2023-02-18 21:09:24,986 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 442 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 2215 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 3334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1054 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-02-18 21:09:24,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1868 Invalid, 3334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2215 Invalid, 0 Unknown, 1054 Unchecked, 3.9s Time] [2023-02-18 21:09:24,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2023-02-18 21:09:24,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 350. [2023-02-18 21:09:24,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 212 states have (on average 1.6839622641509433) internal successors, (357), 322 states have internal predecessors, (357), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (27), 20 states have call predecessors, (27), 17 states have call successors, (27) [2023-02-18 21:09:24,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 401 transitions. [2023-02-18 21:09:24,995 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 401 transitions. Word has length 25 [2023-02-18 21:09:24,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:09:25,005 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 401 transitions. [2023-02-18 21:09:25,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-18 21:09:25,005 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 401 transitions. [2023-02-18 21:09:25,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-18 21:09:25,006 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:09:25,006 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:09:25,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-02-18 21:09:25,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2023-02-18 21:09:25,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-02-18 21:09:25,416 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr84ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:09:25,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:09:25,416 INFO L85 PathProgramCache]: Analyzing trace with hash 83853234, now seen corresponding path program 1 times [2023-02-18 21:09:25,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:09:25,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336958194] [2023-02-18 21:09:25,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:09:25,417 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:09:25,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:09:25,418 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:09:25,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-02-18 21:09:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:09:25,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 21:09:25,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:09:25,588 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 21:09:25,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:09:25,679 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-18 21:09:25,679 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:09:25,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336958194] [2023-02-18 21:09:25,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336958194] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 21:09:25,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 21:09:25,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2023-02-18 21:09:25,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770126338] [2023-02-18 21:09:25,680 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 21:09:25,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 21:09:25,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:09:25,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 21:09:25,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-18 21:09:25,681 INFO L87 Difference]: Start difference. First operand 350 states and 401 transitions. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-18 21:09:26,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:09:26,458 INFO L93 Difference]: Finished difference Result 349 states and 399 transitions. [2023-02-18 21:09:26,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 21:09:26,459 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 26 [2023-02-18 21:09:26,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:09:26,460 INFO L225 Difference]: With dead ends: 349 [2023-02-18 21:09:26,460 INFO L226 Difference]: Without dead ends: 349 [2023-02-18 21:09:26,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-18 21:09:26,461 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 578 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-18 21:09:26,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 1219 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-18 21:09:26,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-02-18 21:09:26,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2023-02-18 21:09:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 212 states have (on average 1.6745283018867925) internal successors, (355), 321 states have internal predecessors, (355), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (27), 20 states have call predecessors, (27), 17 states have call successors, (27) [2023-02-18 21:09:26,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 399 transitions. [2023-02-18 21:09:26,467 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 399 transitions. Word has length 26 [2023-02-18 21:09:26,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:09:26,468 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 399 transitions. [2023-02-18 21:09:26,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-18 21:09:26,468 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 399 transitions. [2023-02-18 21:09:26,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-18 21:09:26,468 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:09:26,468 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:09:26,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-02-18 21:09:26,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:09:26,669 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:09:26,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:09:26,669 INFO L85 PathProgramCache]: Analyzing trace with hash -366162574, now seen corresponding path program 1 times [2023-02-18 21:09:26,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:09:26,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609649332] [2023-02-18 21:09:26,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:09:26,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:09:26,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:09:26,671 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:09:26,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-02-18 21:09:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:09:26,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-18 21:09:26,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:09:26,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-18 21:09:26,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-18 21:09:26,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 21:09:26,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 21:09:26,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:09:26,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609649332] [2023-02-18 21:09:26,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1609649332] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:09:26,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:09:26,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 21:09:26,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007372033] [2023-02-18 21:09:26,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:09:26,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 21:09:26,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:09:26,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 21:09:26,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:09:26,807 INFO L87 Difference]: Start difference. First operand 349 states and 399 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 21:09:27,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:09:27,152 INFO L93 Difference]: Finished difference Result 355 states and 404 transitions. [2023-02-18 21:09:27,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 21:09:27,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2023-02-18 21:09:27,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:09:27,155 INFO L225 Difference]: With dead ends: 355 [2023-02-18 21:09:27,155 INFO L226 Difference]: Without dead ends: 355 [2023-02-18 21:09:27,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-18 21:09:27,155 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 13 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 21:09:27,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1236 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 21:09:27,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-02-18 21:09:27,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 351. [2023-02-18 21:09:27,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 214 states have (on average 1.6682242990654206) internal successors, (357), 323 states have internal predecessors, (357), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (27), 20 states have call predecessors, (27), 17 states have call successors, (27) [2023-02-18 21:09:27,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 401 transitions. [2023-02-18 21:09:27,162 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 401 transitions. Word has length 26 [2023-02-18 21:09:27,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:09:27,162 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 401 transitions. [2023-02-18 21:09:27,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 21:09:27,162 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 401 transitions. [2023-02-18 21:09:27,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-18 21:09:27,163 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:09:27,163 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:09:27,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-02-18 21:09:27,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:09:27,372 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr103ASSERT_VIOLATIONMEMORY_LEAK === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:09:27,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:09:27,373 INFO L85 PathProgramCache]: Analyzing trace with hash 305064464, now seen corresponding path program 1 times [2023-02-18 21:09:27,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:09:27,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365861039] [2023-02-18 21:09:27,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:09:27,373 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:09:27,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:09:27,374 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:09:27,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-02-18 21:09:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:09:27,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 21:09:27,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:09:27,508 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_entry_point_~client~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~client~0#1.base| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~client~0#1.base|)))) is different from true [2023-02-18 21:09:27,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 21:09:27,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:09:27,625 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret65#1.base_29| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret65#1.base_29|))) (= |c_ULTIMATE.start_main_old_#valid#1| (store |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret65#1.base_29| (_ bv0 1))))) is different from false [2023-02-18 21:09:27,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:09:27,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365861039] [2023-02-18 21:09:27,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365861039] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 21:09:27,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1764310857] [2023-02-18 21:09:27,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:09:27,629 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-18 21:09:27,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-18 21:09:27,637 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-02-18 21:09:27,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-02-18 21:09:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:09:27,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-18 21:09:27,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:09:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 21:09:27,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:09:27,952 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret65#1.base_32| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret65#1.base_32|))) (= |c_ULTIMATE.start_main_old_#valid#1| (store |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret65#1.base_32| (_ bv0 1))))) is different from false [2023-02-18 21:09:27,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1764310857] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 21:09:27,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 21:09:27,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2023-02-18 21:09:27,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144162536] [2023-02-18 21:09:27,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 21:09:27,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 21:09:27,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:09:27,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 21:09:27,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=126, Unknown=3, NotChecked=72, Total=240 [2023-02-18 21:09:27,957 INFO L87 Difference]: Start difference. First operand 351 states and 401 transitions. Second operand has 12 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 21:09:30,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:09:30,951 INFO L93 Difference]: Finished difference Result 363 states and 412 transitions. [2023-02-18 21:09:30,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 21:09:30,952 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 28 [2023-02-18 21:09:30,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:09:30,953 INFO L225 Difference]: With dead ends: 363 [2023-02-18 21:09:30,953 INFO L226 Difference]: Without dead ends: 347 [2023-02-18 21:09:30,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 78 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 3 IntricatePredicates, 2 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=276, Unknown=3, NotChecked=108, Total=462 [2023-02-18 21:09:30,954 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 363 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 50 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 345 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-02-18 21:09:30,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 1196 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1073 Invalid, 2 Unknown, 345 Unchecked, 2.9s Time] [2023-02-18 21:09:30,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-02-18 21:09:30,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2023-02-18 21:09:30,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 209 states have (on average 1.6794258373205742) internal successors, (351), 319 states have internal predecessors, (351), 17 states have call successors, (17), 8 states have call predecessors, (17), 10 states have return successors, (26), 19 states have call predecessors, (26), 17 states have call successors, (26) [2023-02-18 21:09:30,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 394 transitions. [2023-02-18 21:09:30,961 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 394 transitions. Word has length 28 [2023-02-18 21:09:30,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:09:30,961 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 394 transitions. [2023-02-18 21:09:30,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 21:09:30,961 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 394 transitions. [2023-02-18 21:09:30,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-18 21:09:30,962 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:09:30,962 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:09:30,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2023-02-18 21:09:31,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-02-18 21:09:31,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:09:31,375 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr103ASSERT_VIOLATIONMEMORY_LEAK === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:09:31,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:09:31,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1048245233, now seen corresponding path program 1 times [2023-02-18 21:09:31,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:09:31,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730854168] [2023-02-18 21:09:31,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:09:31,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:09:31,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:09:31,376 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:09:31,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-02-18 21:09:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:09:31,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 21:09:31,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:09:31,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 21:09:31,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 21:09:31,473 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:09:31,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730854168] [2023-02-18 21:09:31,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730854168] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:09:31,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:09:31,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 21:09:31,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689507620] [2023-02-18 21:09:31,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:09:31,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 21:09:31,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:09:31,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 21:09:31,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:09:31,475 INFO L87 Difference]: Start difference. First operand 345 states and 394 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 21:09:31,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:09:31,539 INFO L93 Difference]: Finished difference Result 336 states and 384 transitions. [2023-02-18 21:09:31,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 21:09:31,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2023-02-18 21:09:31,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:09:31,541 INFO L225 Difference]: With dead ends: 336 [2023-02-18 21:09:31,541 INFO L226 Difference]: Without dead ends: 336 [2023-02-18 21:09:31,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:09:31,542 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 245 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:09:31,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1053 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:09:31,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-02-18 21:09:31,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2023-02-18 21:09:31,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 200 states have (on average 1.705) internal successors, (341), 310 states have internal predecessors, (341), 17 states have call successors, (17), 8 states have call predecessors, (17), 10 states have return successors, (26), 19 states have call predecessors, (26), 17 states have call successors, (26) [2023-02-18 21:09:31,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 384 transitions. [2023-02-18 21:09:31,556 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 384 transitions. Word has length 28 [2023-02-18 21:09:31,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:09:31,556 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 384 transitions. [2023-02-18 21:09:31,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 21:09:31,556 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 384 transitions. [2023-02-18 21:09:31,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 21:09:31,557 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:09:31,557 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:09:31,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-02-18 21:09:31,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:09:31,767 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr88ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:09:31,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:09:31,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1975256279, now seen corresponding path program 1 times [2023-02-18 21:09:31,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:09:31,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963882026] [2023-02-18 21:09:31,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:09:31,768 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:09:31,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:09:31,769 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:09:31,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-02-18 21:09:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:09:31,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 21:09:31,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:09:31,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 21:09:31,911 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:09:31,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2023-02-18 21:09:31,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-02-18 21:09:31,977 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 21:09:31,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:09:32,181 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 21:09:32,182 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:09:32,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963882026] [2023-02-18 21:09:32,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963882026] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 21:09:32,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 21:09:32,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2023-02-18 21:09:32,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437694158] [2023-02-18 21:09:32,182 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 21:09:32,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-18 21:09:32,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 21:09:32,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-18 21:09:32,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-02-18 21:09:32,183 INFO L87 Difference]: Start difference. First operand 336 states and 384 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-18 21:09:34,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:09:34,965 INFO L93 Difference]: Finished difference Result 389 states and 435 transitions. [2023-02-18 21:09:34,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 21:09:34,966 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 30 [2023-02-18 21:09:34,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:09:34,967 INFO L225 Difference]: With dead ends: 389 [2023-02-18 21:09:34,967 INFO L226 Difference]: Without dead ends: 389 [2023-02-18 21:09:34,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-02-18 21:09:34,968 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 599 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-02-18 21:09:34,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 1361 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-02-18 21:09:34,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-02-18 21:09:34,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 339. [2023-02-18 21:09:34,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 203 states have (on average 1.6945812807881773) internal successors, (344), 313 states have internal predecessors, (344), 17 states have call successors, (17), 8 states have call predecessors, (17), 10 states have return successors, (26), 19 states have call predecessors, (26), 17 states have call successors, (26) [2023-02-18 21:09:34,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 387 transitions. [2023-02-18 21:09:34,974 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 387 transitions. Word has length 30 [2023-02-18 21:09:34,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:09:34,974 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 387 transitions. [2023-02-18 21:09:34,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-18 21:09:34,975 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 387 transitions. [2023-02-18 21:09:34,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-18 21:09:34,975 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:09:34,975 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:09:34,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-02-18 21:09:35,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:09:35,184 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-02-18 21:09:35,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:09:35,185 INFO L85 PathProgramCache]: Analyzing trace with hash -154246822, now seen corresponding path program 1 times [2023-02-18 21:09:35,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 21:09:35,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881114829] [2023-02-18 21:09:35,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:09:35,185 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 21:09:35,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 21:09:35,186 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 21:09:35,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-02-18 21:09:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:09:35,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-18 21:09:35,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:09:35,297 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:09:35,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2023-02-18 21:09:35,372 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:09:35,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 78 [2023-02-18 21:09:35,555 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:09:35,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 184 treesize of output 199 [2023-02-18 21:09:35,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-02-18 21:09:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-18 21:09:35,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:09:35,887 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 21:09:35,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881114829] [2023-02-18 21:09:35,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881114829] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 21:09:35,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [984800563] [2023-02-18 21:09:35,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:09:35,887 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-18 21:09:35,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-18 21:09:35,893 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-02-18 21:09:35,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2023-02-18 21:09:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:09:36,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-18 21:09:36,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:09:36,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-02-18 21:09:36,110 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:09:36,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2023-02-18 21:09:36,172 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:09:36,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 78 [2023-02-18 21:09:36,413 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:09:36,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 178 treesize of output 193 [2023-02-18 21:09:39,405 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:09:39,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 216 select indices, 216 select index equivalence classes, 2 disjoint index pairs (out of 23220 index pairs), introduced 216 new quantified variables, introduced 23433 case distinctions, treesize of input 5344 treesize of output 194106