./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/lis-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5317dae 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/array-memsafety/lis-alloca-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 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 03:05:10,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 03:05:10,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 03:05:11,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 03:05:11,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 03:05:11,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 03:05:11,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 03:05:11,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 03:05:11,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 03:05:11,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 03:05:11,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 03:05:11,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 03:05:11,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 03:05:11,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 03:05:11,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 03:05:11,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 03:05:11,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 03:05:11,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 03:05:11,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 03:05:11,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 03:05:11,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 03:05:11,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 03:05:11,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 03:05:11,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 03:05:11,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 03:05:11,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 03:05:11,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 03:05:11,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 03:05:11,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 03:05:11,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 03:05:11,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 03:05:11,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 03:05:11,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 03:05:11,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 03:05:11,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 03:05:11,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 03:05:11,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 03:05:11,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 03:05:11,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 03:05:11,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 03:05:11,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 03:05:11,068 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-16 03:05:11,098 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 03:05:11,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 03:05:11,099 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 03:05:11,099 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 03:05:11,100 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 03:05:11,100 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 03:05:11,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 03:05:11,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 03:05:11,101 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 03:05:11,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 03:05:11,102 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 03:05:11,102 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-16 03:05:11,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 03:05:11,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 03:05:11,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 03:05:11,103 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-16 03:05:11,103 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-16 03:05:11,104 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-16 03:05:11,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 03:05:11,104 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-16 03:05:11,104 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 03:05:11,104 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 03:05:11,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 03:05:11,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 03:05:11,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 03:05:11,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 03:05:11,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 03:05:11,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 03:05:11,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 03:05:11,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 03:05:11,106 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 03:05:11,106 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 03:05:11,107 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 03:05:11,107 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 03:05:11,107 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf [2023-02-16 03:05:11,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 03:05:11,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 03:05:11,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 03:05:11,384 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 03:05:11,385 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 03:05:11,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2023-02-16 03:05:12,591 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 03:05:12,833 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 03:05:12,833 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2023-02-16 03:05:12,843 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/404b72257/7d919f0c9d6d49309cbca1ac95633c7e/FLAG1aa26c2b4 [2023-02-16 03:05:12,854 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/404b72257/7d919f0c9d6d49309cbca1ac95633c7e [2023-02-16 03:05:12,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 03:05:12,857 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 03:05:12,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 03:05:12,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 03:05:12,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 03:05:12,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:05:12" (1/1) ... [2023-02-16 03:05:12,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cbf40d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:05:12, skipping insertion in model container [2023-02-16 03:05:12,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:05:12" (1/1) ... [2023-02-16 03:05:12,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 03:05:12,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 03:05:13,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:05:13,212 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) [2023-02-16 03:05:13,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@84a1750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:05:13, skipping insertion in model container [2023-02-16 03:05:13,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 03:05:13,215 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-16 03:05:13,217 INFO L158 Benchmark]: Toolchain (without parser) took 358.68ms. Allocated memory is still 138.4MB. Free memory was 88.1MB in the beginning and 76.4MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 03:05:13,217 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 138.4MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 03:05:13,218 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.55ms. Allocated memory is still 138.4MB. Free memory was 87.7MB in the beginning and 76.4MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 03:05:13,220 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 138.4MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.55ms. Allocated memory is still 138.4MB. Free memory was 87.7MB in the beginning and 76.4MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 515]: 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/array-memsafety/lis-alloca-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 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 03:05:15,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 03:05:15,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 03:05:15,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 03:05:15,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 03:05:15,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 03:05:15,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 03:05:15,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 03:05:15,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 03:05:15,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 03:05:15,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 03:05:15,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 03:05:15,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 03:05:15,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 03:05:15,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 03:05:15,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 03:05:15,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 03:05:15,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 03:05:15,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 03:05:15,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 03:05:15,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 03:05:15,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 03:05:15,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 03:05:15,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 03:05:15,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 03:05:15,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 03:05:15,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 03:05:15,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 03:05:15,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 03:05:15,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 03:05:15,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 03:05:15,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 03:05:15,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 03:05:15,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 03:05:15,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 03:05:15,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 03:05:15,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 03:05:15,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 03:05:15,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 03:05:15,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 03:05:15,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 03:05:15,227 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-16 03:05:15,264 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 03:05:15,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 03:05:15,266 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 03:05:15,266 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 03:05:15,267 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 03:05:15,267 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 03:05:15,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 03:05:15,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 03:05:15,268 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 03:05:15,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 03:05:15,268 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 03:05:15,269 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-16 03:05:15,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 03:05:15,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 03:05:15,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 03:05:15,269 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-16 03:05:15,270 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-16 03:05:15,270 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-16 03:05:15,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 03:05:15,270 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-16 03:05:15,270 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-16 03:05:15,271 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-16 03:05:15,271 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 03:05:15,271 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 03:05:15,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 03:05:15,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 03:05:15,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 03:05:15,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 03:05:15,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 03:05:15,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 03:05:15,272 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-16 03:05:15,273 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-16 03:05:15,273 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 03:05:15,273 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 03:05:15,273 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 03:05:15,274 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-16 03:05:15,274 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 03:05:15,274 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf [2023-02-16 03:05:15,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 03:05:15,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 03:05:15,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 03:05:15,635 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 03:05:15,636 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 03:05:15,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2023-02-16 03:05:16,847 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 03:05:17,117 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 03:05:17,117 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2023-02-16 03:05:17,130 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/675e8bbf8/5f5c9681957e4ce0bbc9e5a28e0584dd/FLAGcc5af921b [2023-02-16 03:05:17,144 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/675e8bbf8/5f5c9681957e4ce0bbc9e5a28e0584dd [2023-02-16 03:05:17,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 03:05:17,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 03:05:17,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 03:05:17,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 03:05:17,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 03:05:17,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:05:17" (1/1) ... [2023-02-16 03:05:17,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538cca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:05:17, skipping insertion in model container [2023-02-16 03:05:17,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:05:17" (1/1) ... [2023-02-16 03:05:17,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 03:05:17,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 03:05:17,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:05:17,544 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-16 03:05:17,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 03:05:17,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:05:17,596 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 03:05:17,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:05:17,669 INFO L208 MainTranslator]: Completed translation [2023-02-16 03:05:17,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:05:17 WrapperNode [2023-02-16 03:05:17,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 03:05:17,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 03:05:17,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 03:05:17,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 03:05:17,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:05:17" (1/1) ... [2023-02-16 03:05:17,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:05:17" (1/1) ... [2023-02-16 03:05:17,731 INFO L138 Inliner]: procedures = 117, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 114 [2023-02-16 03:05:17,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 03:05:17,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 03:05:17,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 03:05:17,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 03:05:17,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:05:17" (1/1) ... [2023-02-16 03:05:17,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:05:17" (1/1) ... [2023-02-16 03:05:17,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:05:17" (1/1) ... [2023-02-16 03:05:17,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:05:17" (1/1) ... [2023-02-16 03:05:17,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:05:17" (1/1) ... [2023-02-16 03:05:17,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:05:17" (1/1) ... [2023-02-16 03:05:17,755 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:05:17" (1/1) ... [2023-02-16 03:05:17,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:05:17" (1/1) ... [2023-02-16 03:05:17,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 03:05:17,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 03:05:17,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 03:05:17,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 03:05:17,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:05:17" (1/1) ... [2023-02-16 03:05:17,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 03:05:17,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:05:17,798 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) [2023-02-16 03:05:17,805 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 [2023-02-16 03:05:17,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-16 03:05:17,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-16 03:05:17,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 03:05:17,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-16 03:05:17,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 03:05:17,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 03:05:17,996 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 03:05:18,005 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 03:05:18,442 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 03:05:18,448 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 03:05:18,449 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2023-02-16 03:05:18,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 03:05:18 BoogieIcfgContainer [2023-02-16 03:05:18,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 03:05:18,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 03:05:18,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 03:05:18,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 03:05:18,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 03:05:17" (1/3) ... [2023-02-16 03:05:18,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b69755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 03:05:18, skipping insertion in model container [2023-02-16 03:05:18,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:05:17" (2/3) ... [2023-02-16 03:05:18,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b69755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 03:05:18, skipping insertion in model container [2023-02-16 03:05:18,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 03:05:18" (3/3) ... [2023-02-16 03:05:18,459 INFO L112 eAbstractionObserver]: Analyzing ICFG lis-alloca-1.i [2023-02-16 03:05:18,476 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 03:05:18,476 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2023-02-16 03:05:18,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 03:05:18,522 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;@21b8b78d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 03:05:18,522 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-02-16 03:05:18,527 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 41 states have (on average 1.951219512195122) internal successors, (80), 66 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:18,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-16 03:05:18,532 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:05:18,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-16 03:05:18,533 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:05:18,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:05:18,537 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2023-02-16 03:05:18,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:05:18,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810753620] [2023-02-16 03:05:18,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:05:18,550 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:05:18,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:05:18,561 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) [2023-02-16 03:05:18,562 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 [2023-02-16 03:05:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:05:18,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 03:05:18,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:05:18,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-02-16 03:05:18,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:05:18,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:05:18,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:05:18,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810753620] [2023-02-16 03:05:18,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810753620] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:05:18,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:05:18,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 03:05:18,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419346339] [2023-02-16 03:05:18,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:05:18,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 03:05:18,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:05:18,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 03:05:18,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:05:18,782 INFO L87 Difference]: Start difference. First operand has 67 states, 41 states have (on average 1.951219512195122) internal successors, (80), 66 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:18,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:05:18,919 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2023-02-16 03:05:18,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 03:05:18,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-16 03:05:18,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:05:18,929 INFO L225 Difference]: With dead ends: 66 [2023-02-16 03:05:18,929 INFO L226 Difference]: Without dead ends: 64 [2023-02-16 03:05:18,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:05:18,936 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 62 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:05:18,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 51 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:05:18,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-16 03:05:18,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-02-16 03:05:18,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.8) internal successors, (72), 63 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:18,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2023-02-16 03:05:18,965 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 6 [2023-02-16 03:05:18,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:05:18,965 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2023-02-16 03:05:18,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:18,966 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2023-02-16 03:05:18,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-16 03:05:18,966 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:05:18,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-16 03:05:18,973 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 [2023-02-16 03:05:19,169 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 [2023-02-16 03:05:19,169 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:05:19,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:05:19,170 INFO L85 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2023-02-16 03:05:19,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:05:19,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55722081] [2023-02-16 03:05:19,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:05:19,171 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 [2023-02-16 03:05:19,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:05:19,173 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) [2023-02-16 03:05:19,174 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 [2023-02-16 03:05:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:05:19,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 03:05:19,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:05:19,284 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 [2023-02-16 03:05:19,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:05:19,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:05:19,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:05:19,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55722081] [2023-02-16 03:05:19,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55722081] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:05:19,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:05:19,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:05:19,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053663598] [2023-02-16 03:05:19,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:05:19,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:05:19,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:05:19,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:05:19,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:05:19,337 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:19,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:05:19,692 INFO L93 Difference]: Finished difference Result 129 states and 144 transitions. [2023-02-16 03:05:19,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:05:19,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-16 03:05:19,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:05:19,695 INFO L225 Difference]: With dead ends: 129 [2023-02-16 03:05:19,695 INFO L226 Difference]: Without dead ends: 129 [2023-02-16 03:05:19,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:05:19,696 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 74 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 03:05:19,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 275 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 03:05:19,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-02-16 03:05:19,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 67. [2023-02-16 03:05:19,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 43 states have (on average 1.744186046511628) internal successors, (75), 66 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:19,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2023-02-16 03:05:19,712 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 6 [2023-02-16 03:05:19,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:05:19,713 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2023-02-16 03:05:19,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:19,714 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2023-02-16 03:05:19,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-16 03:05:19,715 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:05:19,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-16 03:05:19,730 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 (3)] Forceful destruction successful, exit code 0 [2023-02-16 03:05:19,923 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 [2023-02-16 03:05:19,924 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:05:19,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:05:19,925 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2023-02-16 03:05:19,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:05:19,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226254374] [2023-02-16 03:05:19,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:05:19,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:05:19,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:05:19,927 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) [2023-02-16 03:05:19,929 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 [2023-02-16 03:05:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:05:19,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-16 03:05:19,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:05:19,998 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 8 treesize of output 7 [2023-02-16 03:05:20,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:05:20,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:05:20,044 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:05:20,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226254374] [2023-02-16 03:05:20,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226254374] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:05:20,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:05:20,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:05:20,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413428628] [2023-02-16 03:05:20,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:05:20,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:05:20,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:05:20,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:05:20,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:05:20,047 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:20,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:05:20,242 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2023-02-16 03:05:20,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:05:20,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-16 03:05:20,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:05:20,244 INFO L225 Difference]: With dead ends: 71 [2023-02-16 03:05:20,244 INFO L226 Difference]: Without dead ends: 71 [2023-02-16 03:05:20,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:05:20,245 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 74 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:05:20,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 109 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 03:05:20,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-02-16 03:05:20,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2023-02-16 03:05:20,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.7619047619047619) internal successors, (74), 65 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:20,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2023-02-16 03:05:20,250 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 6 [2023-02-16 03:05:20,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:05:20,251 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2023-02-16 03:05:20,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:20,251 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2023-02-16 03:05:20,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-16 03:05:20,251 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:05:20,251 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:05:20,262 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 [2023-02-16 03:05:20,452 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 [2023-02-16 03:05:20,452 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:05:20,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:05:20,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1091210163, now seen corresponding path program 1 times [2023-02-16 03:05:20,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:05:20,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855122441] [2023-02-16 03:05:20,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:05:20,454 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 [2023-02-16 03:05:20,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:05:20,456 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) [2023-02-16 03:05:20,459 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 [2023-02-16 03:05:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:05:20,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 03:05:20,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:05:20,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:05:20,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:05:20,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:05:20,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:05:20,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855122441] [2023-02-16 03:05:20,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855122441] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:05:20,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:05:20,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-16 03:05:20,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126621968] [2023-02-16 03:05:20,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:05:20,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 03:05:20,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:05:20,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 03:05:20,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:05:20,632 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:20,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:05:20,709 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2023-02-16 03:05:20,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 03:05:20,710 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-16 03:05:20,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:05:20,711 INFO L225 Difference]: With dead ends: 127 [2023-02-16 03:05:20,711 INFO L226 Difference]: Without dead ends: 127 [2023-02-16 03:05:20,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:05:20,713 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 247 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:05:20,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 258 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:05:20,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-02-16 03:05:20,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 72. [2023-02-16 03:05:20,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.6666666666666667) internal successors, (80), 71 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:20,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2023-02-16 03:05:20,718 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 10 [2023-02-16 03:05:20,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:05:20,719 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2023-02-16 03:05:20,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:20,719 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2023-02-16 03:05:20,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-16 03:05:20,720 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:05:20,720 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:05:20,732 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 [2023-02-16 03:05:20,929 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 [2023-02-16 03:05:20,929 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:05:20,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:05:20,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2023-02-16 03:05:20,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:05:20,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224271608] [2023-02-16 03:05:20,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:05:20,930 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 [2023-02-16 03:05:20,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:05:20,933 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) [2023-02-16 03:05:20,936 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 [2023-02-16 03:05:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:05:20,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-16 03:05:20,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:05:20,997 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 8 treesize of output 7 [2023-02-16 03:05:21,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:05:21,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:05:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:05:21,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:05:21,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224271608] [2023-02-16 03:05:21,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224271608] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:05:21,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:05:21,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-02-16 03:05:21,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412212579] [2023-02-16 03:05:21,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:05:21,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-16 03:05:21,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:05:21,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-16 03:05:21,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-16 03:05:21,488 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:22,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:05:22,545 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2023-02-16 03:05:22,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-16 03:05:22,546 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-16 03:05:22,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:05:22,547 INFO L225 Difference]: With dead ends: 140 [2023-02-16 03:05:22,547 INFO L226 Difference]: Without dead ends: 140 [2023-02-16 03:05:22,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2023-02-16 03:05:22,548 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 339 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-16 03:05:22,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 208 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-16 03:05:22,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-02-16 03:05:22,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 84. [2023-02-16 03:05:22,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 60 states have (on average 1.5833333333333333) internal successors, (95), 83 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:22,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2023-02-16 03:05:22,554 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 10 [2023-02-16 03:05:22,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:05:22,555 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2023-02-16 03:05:22,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:22,555 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2023-02-16 03:05:22,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-16 03:05:22,556 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:05:22,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:05:22,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-16 03:05:22,764 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 [2023-02-16 03:05:22,765 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:05:22,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:05:22,765 INFO L85 PathProgramCache]: Analyzing trace with hash -680998152, now seen corresponding path program 1 times [2023-02-16 03:05:22,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:05:22,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334813189] [2023-02-16 03:05:22,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:05:22,766 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 [2023-02-16 03:05:22,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:05:22,767 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) [2023-02-16 03:05:22,768 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 [2023-02-16 03:05:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:05:22,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 03:05:22,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:05:22,852 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-02-16 03:05:22,852 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 19 treesize of output 22 [2023-02-16 03:05:22,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 03:05:22,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:05:22,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:05:22,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334813189] [2023-02-16 03:05:22,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334813189] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:05:22,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:05:22,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 03:05:22,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160173077] [2023-02-16 03:05:22,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:05:22,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 03:05:22,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:05:22,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 03:05:22,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:05:22,876 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:22,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:05:22,976 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2023-02-16 03:05:22,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 03:05:22,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-16 03:05:22,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:05:22,978 INFO L225 Difference]: With dead ends: 77 [2023-02-16 03:05:22,978 INFO L226 Difference]: Without dead ends: 77 [2023-02-16 03:05:22,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:05:22,979 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 49 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:05:22,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 49 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:05:22,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-16 03:05:22,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-02-16 03:05:22,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 60 states have (on average 1.4666666666666666) internal successors, (88), 76 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:22,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2023-02-16 03:05:22,983 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 12 [2023-02-16 03:05:22,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:05:22,983 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2023-02-16 03:05:22,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:22,983 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2023-02-16 03:05:22,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-16 03:05:22,983 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:05:22,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:05:22,994 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 [2023-02-16 03:05:23,184 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 [2023-02-16 03:05:23,184 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:05:23,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:05:23,185 INFO L85 PathProgramCache]: Analyzing trace with hash -680998151, now seen corresponding path program 1 times [2023-02-16 03:05:23,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:05:23,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767080446] [2023-02-16 03:05:23,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:05:23,185 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 [2023-02-16 03:05:23,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:05:23,187 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) [2023-02-16 03:05:23,187 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 (8)] Waiting until timeout for monitored process [2023-02-16 03:05:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:05:23,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-16 03:05:23,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:05:23,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:05:23,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2023-02-16 03:05:23,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2023-02-16 03:05:23,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 03:05:23,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:05:23,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:05:23,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767080446] [2023-02-16 03:05:23,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767080446] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:05:23,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:05:23,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:05:23,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822482678] [2023-02-16 03:05:23,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:05:23,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:05:23,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:05:23,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:05:23,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:05:23,310 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:23,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:05:23,489 INFO L93 Difference]: Finished difference Result 132 states and 150 transitions. [2023-02-16 03:05:23,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:05:23,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-16 03:05:23,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:05:23,498 INFO L225 Difference]: With dead ends: 132 [2023-02-16 03:05:23,498 INFO L226 Difference]: Without dead ends: 132 [2023-02-16 03:05:23,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:05:23,499 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 67 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:05:23,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 139 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 03:05:23,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-02-16 03:05:23,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 80. [2023-02-16 03:05:23,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 63 states have (on average 1.4603174603174602) internal successors, (92), 79 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:23,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2023-02-16 03:05:23,503 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 12 [2023-02-16 03:05:23,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:05:23,504 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2023-02-16 03:05:23,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:23,504 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2023-02-16 03:05:23,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-16 03:05:23,505 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:05:23,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:05:23,514 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 [2023-02-16 03:05:23,714 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 [2023-02-16 03:05:23,714 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:05:23,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:05:23,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1074025161, now seen corresponding path program 1 times [2023-02-16 03:05:23,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:05:23,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946420867] [2023-02-16 03:05:23,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:05:23,715 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 [2023-02-16 03:05:23,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:05:23,716 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) [2023-02-16 03:05:23,717 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 [2023-02-16 03:05:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:05:23,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-16 03:05:23,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:05:23,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:05:23,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-02-16 03:05:23,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2023-02-16 03:05:23,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 03:05:23,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:05:23,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:05:23,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946420867] [2023-02-16 03:05:23,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946420867] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:05:23,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:05:23,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 03:05:23,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467833018] [2023-02-16 03:05:23,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:05:23,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:05:23,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:05:23,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:05:23,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:05:23,899 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:24,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:05:24,157 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2023-02-16 03:05:24,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:05:24,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-16 03:05:24,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:05:24,159 INFO L225 Difference]: With dead ends: 86 [2023-02-16 03:05:24,159 INFO L226 Difference]: Without dead ends: 86 [2023-02-16 03:05:24,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-02-16 03:05:24,159 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 66 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:05:24,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 105 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 03:05:24,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-02-16 03:05:24,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 79. [2023-02-16 03:05:24,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 62 states have (on average 1.4516129032258065) internal successors, (90), 78 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:24,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2023-02-16 03:05:24,164 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 12 [2023-02-16 03:05:24,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:05:24,164 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2023-02-16 03:05:24,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:24,164 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2023-02-16 03:05:24,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-16 03:05:24,165 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:05:24,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:05:24,179 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 (9)] Ended with exit code 0 [2023-02-16 03:05:24,379 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 [2023-02-16 03:05:24,379 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:05:24,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:05:24,380 INFO L85 PathProgramCache]: Analyzing trace with hash 363893777, now seen corresponding path program 1 times [2023-02-16 03:05:24,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:05:24,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622910103] [2023-02-16 03:05:24,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:05:24,380 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 [2023-02-16 03:05:24,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:05:24,383 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) [2023-02-16 03:05:24,383 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 [2023-02-16 03:05:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:05:24,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 03:05:24,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:05:24,455 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-02-16 03:05:24,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 19 [2023-02-16 03:05:24,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 03:05:24,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:05:24,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:05:24,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622910103] [2023-02-16 03:05:24,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622910103] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:05:24,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:05:24,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 03:05:24,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633422292] [2023-02-16 03:05:24,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:05:24,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 03:05:24,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:05:24,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 03:05:24,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:05:24,467 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:24,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:05:24,540 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2023-02-16 03:05:24,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 03:05:24,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-16 03:05:24,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:05:24,541 INFO L225 Difference]: With dead ends: 77 [2023-02-16 03:05:24,542 INFO L226 Difference]: Without dead ends: 77 [2023-02-16 03:05:24,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:05:24,542 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 46 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:05:24,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 54 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:05:24,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-16 03:05:24,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-02-16 03:05:24,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 76 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:24,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2023-02-16 03:05:24,546 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 13 [2023-02-16 03:05:24,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:05:24,547 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2023-02-16 03:05:24,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:24,547 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2023-02-16 03:05:24,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-16 03:05:24,547 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:05:24,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:05:24,557 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 [2023-02-16 03:05:24,756 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 [2023-02-16 03:05:24,757 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:05:24,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:05:24,757 INFO L85 PathProgramCache]: Analyzing trace with hash 363893778, now seen corresponding path program 1 times [2023-02-16 03:05:24,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:05:24,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386708221] [2023-02-16 03:05:24,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:05:24,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:05:24,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:05:24,759 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) [2023-02-16 03:05:24,762 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 [2023-02-16 03:05:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:05:24,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-16 03:05:24,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:05:24,864 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 03:05:24,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-02-16 03:05:24,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 03:05:24,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:05:24,888 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:05:24,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386708221] [2023-02-16 03:05:24,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386708221] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:05:24,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:05:24,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:05:24,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428909688] [2023-02-16 03:05:24,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:05:24,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:05:24,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:05:24,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:05:24,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:05:24,890 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:25,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:05:25,053 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2023-02-16 03:05:25,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:05:25,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-16 03:05:25,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:05:25,055 INFO L225 Difference]: With dead ends: 127 [2023-02-16 03:05:25,055 INFO L226 Difference]: Without dead ends: 127 [2023-02-16 03:05:25,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:05:25,055 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 57 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:05:25,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 134 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:05:25,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-02-16 03:05:25,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 81. [2023-02-16 03:05:25,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 66 states have (on average 1.393939393939394) internal successors, (92), 80 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:25,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2023-02-16 03:05:25,058 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 13 [2023-02-16 03:05:25,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:05:25,059 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2023-02-16 03:05:25,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:25,059 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2023-02-16 03:05:25,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-16 03:05:25,060 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:05:25,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:05:25,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-02-16 03:05:25,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:05:25,268 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:05:25,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:05:25,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1064958356, now seen corresponding path program 1 times [2023-02-16 03:05:25,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:05:25,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123741810] [2023-02-16 03:05:25,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:05:25,269 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 [2023-02-16 03:05:25,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:05:25,270 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:05:25,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-02-16 03:05:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:05:25,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-16 03:05:25,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:05:25,380 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-02-16 03:05:25,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 17 [2023-02-16 03:05:25,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 03:05:25,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:05:25,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:05:25,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123741810] [2023-02-16 03:05:25,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123741810] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:05:25,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:05:25,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 03:05:25,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827797654] [2023-02-16 03:05:25,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:05:25,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:05:25,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:05:25,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:05:25,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:05:25,442 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:25,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:05:25,690 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2023-02-16 03:05:25,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:05:25,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-16 03:05:25,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:05:25,691 INFO L225 Difference]: With dead ends: 83 [2023-02-16 03:05:25,692 INFO L226 Difference]: Without dead ends: 83 [2023-02-16 03:05:25,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-02-16 03:05:25,692 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 60 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:05:25,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 100 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 03:05:25,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-02-16 03:05:25,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2023-02-16 03:05:25,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 63 states have (on average 1.4126984126984128) internal successors, (89), 77 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:25,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2023-02-16 03:05:25,695 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 13 [2023-02-16 03:05:25,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:05:25,696 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2023-02-16 03:05:25,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:25,696 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2023-02-16 03:05:25,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-16 03:05:25,696 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:05:25,696 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:05:25,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-02-16 03:05:25,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:05:25,906 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:05:25,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:05:25,906 INFO L85 PathProgramCache]: Analyzing trace with hash 262068158, now seen corresponding path program 1 times [2023-02-16 03:05:25,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:05:25,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744974717] [2023-02-16 03:05:25,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:05:25,907 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 [2023-02-16 03:05:25,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:05:25,907 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) [2023-02-16 03:05:25,908 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 [2023-02-16 03:05:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:05:25,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 03:05:25,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:05:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 03:05:26,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:05:26,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 03:05:26,112 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:05:26,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744974717] [2023-02-16 03:05:26,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744974717] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:05:26,112 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:05:26,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-16 03:05:26,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771452264] [2023-02-16 03:05:26,112 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:05:26,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 03:05:26,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:05:26,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 03:05:26,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:05:26,113 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:26,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:05:26,354 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2023-02-16 03:05:26,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 03:05:26,355 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-16 03:05:26,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:05:26,355 INFO L225 Difference]: With dead ends: 100 [2023-02-16 03:05:26,355 INFO L226 Difference]: Without dead ends: 100 [2023-02-16 03:05:26,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-16 03:05:26,356 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 63 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:05:26,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 199 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 03:05:26,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-02-16 03:05:26,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2023-02-16 03:05:26,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 79 states have (on average 1.3670886075949367) internal successors, (108), 93 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:26,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions. [2023-02-16 03:05:26,359 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 16 [2023-02-16 03:05:26,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:05:26,359 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 108 transitions. [2023-02-16 03:05:26,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:26,360 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions. [2023-02-16 03:05:26,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-16 03:05:26,360 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:05:26,360 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:05:26,372 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 (13)] Forceful destruction successful, exit code 0 [2023-02-16 03:05:26,560 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 [2023-02-16 03:05:26,561 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:05:26,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:05:26,561 INFO L85 PathProgramCache]: Analyzing trace with hash -749049092, now seen corresponding path program 1 times [2023-02-16 03:05:26,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:05:26,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210557291] [2023-02-16 03:05:26,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:05:26,562 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 [2023-02-16 03:05:26,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:05:26,563 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) [2023-02-16 03:05:26,563 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 [2023-02-16 03:05:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:05:26,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-16 03:05:26,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:05:26,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:05:26,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:05:26,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:05:26,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:05:26,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210557291] [2023-02-16 03:05:26,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210557291] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:05:26,840 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:05:26,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-02-16 03:05:26,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373428293] [2023-02-16 03:05:26,840 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:05:26,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-16 03:05:26,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:05:26,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-16 03:05:26,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-02-16 03:05:26,841 INFO L87 Difference]: Start difference. First operand 94 states and 108 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:27,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:05:27,282 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2023-02-16 03:05:27,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 03:05:27,283 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-16 03:05:27,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:05:27,283 INFO L225 Difference]: With dead ends: 116 [2023-02-16 03:05:27,284 INFO L226 Difference]: Without dead ends: 116 [2023-02-16 03:05:27,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-02-16 03:05:27,285 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 205 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 03:05:27,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 301 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 03:05:27,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-02-16 03:05:27,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 94. [2023-02-16 03:05:27,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 79 states have (on average 1.3670886075949367) internal successors, (108), 93 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:27,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions. [2023-02-16 03:05:27,288 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 16 [2023-02-16 03:05:27,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:05:27,288 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 108 transitions. [2023-02-16 03:05:27,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:27,289 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions. [2023-02-16 03:05:27,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-16 03:05:27,289 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:05:27,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:05:27,301 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 [2023-02-16 03:05:27,499 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 [2023-02-16 03:05:27,499 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:05:27,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:05:27,500 INFO L85 PathProgramCache]: Analyzing trace with hash -302012765, now seen corresponding path program 1 times [2023-02-16 03:05:27,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:05:27,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110370160] [2023-02-16 03:05:27,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:05:27,501 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 [2023-02-16 03:05:27,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:05:27,503 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) [2023-02-16 03:05:27,504 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 [2023-02-16 03:05:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:05:27,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 03:05:27,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:05:27,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 03:05:27,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:05:27,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 25 treesize of output 21 [2023-02-16 03:05:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 03:05:27,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:05:27,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110370160] [2023-02-16 03:05:27,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110370160] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:05:27,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:05:27,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-02-16 03:05:27,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96364496] [2023-02-16 03:05:27,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:05:27,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 03:05:27,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:05:27,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 03:05:27,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:05:27,815 INFO L87 Difference]: Start difference. First operand 94 states and 108 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:28,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:05:28,478 INFO L93 Difference]: Finished difference Result 151 states and 172 transitions. [2023-02-16 03:05:28,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 03:05:28,479 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-16 03:05:28,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:05:28,480 INFO L225 Difference]: With dead ends: 151 [2023-02-16 03:05:28,480 INFO L226 Difference]: Without dead ends: 151 [2023-02-16 03:05:28,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-02-16 03:05:28,480 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 159 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-16 03:05:28,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 154 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-16 03:05:28,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-02-16 03:05:28,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 105. [2023-02-16 03:05:28,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 91 states have (on average 1.3846153846153846) internal successors, (126), 104 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:28,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 126 transitions. [2023-02-16 03:05:28,485 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 126 transitions. Word has length 20 [2023-02-16 03:05:28,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:05:28,485 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 126 transitions. [2023-02-16 03:05:28,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:28,486 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 126 transitions. [2023-02-16 03:05:28,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-16 03:05:28,486 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:05:28,487 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:05:28,494 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 [2023-02-16 03:05:28,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:05:28,689 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:05:28,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:05:28,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1581646975, now seen corresponding path program 2 times [2023-02-16 03:05:28,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:05:28,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550611624] [2023-02-16 03:05:28,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:05:28,690 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 [2023-02-16 03:05:28,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:05:28,691 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:05:28,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-02-16 03:05:28,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 03:05:28,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:05:28,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-16 03:05:28,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:05:28,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:05:28,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-02-16 03:05:28,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2023-02-16 03:05:28,942 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 03:05:28,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:05:29,169 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:05:29,236 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 03:05:29,236 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:05:29,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550611624] [2023-02-16 03:05:29,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550611624] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:05:29,237 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:05:29,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-02-16 03:05:29,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199864140] [2023-02-16 03:05:29,237 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:05:29,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-16 03:05:29,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:05:29,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-16 03:05:29,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-02-16 03:05:29,238 INFO L87 Difference]: Start difference. First operand 105 states and 126 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:31,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:05:31,590 INFO L93 Difference]: Finished difference Result 233 states and 289 transitions. [2023-02-16 03:05:31,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-16 03:05:31,590 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-16 03:05:31,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:05:31,591 INFO L225 Difference]: With dead ends: 233 [2023-02-16 03:05:31,591 INFO L226 Difference]: Without dead ends: 233 [2023-02-16 03:05:31,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2023-02-16 03:05:31,592 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 525 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-02-16 03:05:31,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 147 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-02-16 03:05:31,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-02-16 03:05:31,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 169. [2023-02-16 03:05:31,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 155 states have (on average 1.4387096774193548) internal successors, (223), 168 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:31,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 223 transitions. [2023-02-16 03:05:31,597 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 223 transitions. Word has length 20 [2023-02-16 03:05:31,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:05:31,598 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 223 transitions. [2023-02-16 03:05:31,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:31,598 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 223 transitions. [2023-02-16 03:05:31,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-16 03:05:31,599 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:05:31,599 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:05:31,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-02-16 03:05:31,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:05:31,809 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:05:31,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:05:31,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1786415948, now seen corresponding path program 1 times [2023-02-16 03:05:31,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:05:31,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141043260] [2023-02-16 03:05:31,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:05:31,810 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:05:31,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:05:31,811 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) [2023-02-16 03:05:31,813 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 [2023-02-16 03:05:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:05:31,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-16 03:05:31,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:05:31,939 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-02-16 03:05:31,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 17 [2023-02-16 03:05:32,053 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 03:05:32,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:05:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 03:05:32,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:05:32,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141043260] [2023-02-16 03:05:32,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141043260] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:05:32,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:05:32,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-02-16 03:05:32,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674986532] [2023-02-16 03:05:32,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:05:32,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-16 03:05:32,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:05:32,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-16 03:05:32,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-02-16 03:05:32,413 INFO L87 Difference]: Start difference. First operand 169 states and 223 transitions. Second operand has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:34,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:05:34,665 INFO L93 Difference]: Finished difference Result 219 states and 260 transitions. [2023-02-16 03:05:34,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-16 03:05:34,666 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-16 03:05:34,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:05:34,667 INFO L225 Difference]: With dead ends: 219 [2023-02-16 03:05:34,667 INFO L226 Difference]: Without dead ends: 219 [2023-02-16 03:05:34,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-02-16 03:05:34,668 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 515 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-02-16 03:05:34,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 198 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-02-16 03:05:34,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-02-16 03:05:34,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 184. [2023-02-16 03:05:34,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 170 states have (on average 1.4294117647058824) internal successors, (243), 183 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:34,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 243 transitions. [2023-02-16 03:05:34,673 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 243 transitions. Word has length 21 [2023-02-16 03:05:34,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:05:34,673 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 243 transitions. [2023-02-16 03:05:34,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:34,673 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 243 transitions. [2023-02-16 03:05:34,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-16 03:05:34,674 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:05:34,674 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2023-02-16 03:05:34,685 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 (17)] Ended with exit code 0 [2023-02-16 03:05:34,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:05:34,881 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:05:34,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:05:34,882 INFO L85 PathProgramCache]: Analyzing trace with hash 302966996, now seen corresponding path program 2 times [2023-02-16 03:05:34,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:05:34,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936522605] [2023-02-16 03:05:34,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:05:34,882 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 [2023-02-16 03:05:34,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:05:34,884 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:05:34,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-02-16 03:05:34,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 03:05:34,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:05:34,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-16 03:05:34,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:05:34,992 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 8 treesize of output 7 [2023-02-16 03:05:35,327 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:05:35,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:05:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:05:36,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:05:36,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936522605] [2023-02-16 03:05:36,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936522605] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:05:36,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:05:36,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-02-16 03:05:36,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329591381] [2023-02-16 03:05:36,291 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:05:36,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-16 03:05:36,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:05:36,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-16 03:05:36,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-02-16 03:05:36,292 INFO L87 Difference]: Start difference. First operand 184 states and 243 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:40,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:05:40,284 INFO L93 Difference]: Finished difference Result 633 states and 856 transitions. [2023-02-16 03:05:40,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-16 03:05:40,286 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-16 03:05:40,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:05:40,288 INFO L225 Difference]: With dead ends: 633 [2023-02-16 03:05:40,288 INFO L226 Difference]: Without dead ends: 633 [2023-02-16 03:05:40,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=311, Invalid=619, Unknown=0, NotChecked=0, Total=930 [2023-02-16 03:05:40,290 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 933 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-02-16 03:05:40,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 703 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-02-16 03:05:40,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-02-16 03:05:40,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 208. [2023-02-16 03:05:40,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 194 states have (on average 1.407216494845361) internal successors, (273), 207 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:40,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 273 transitions. [2023-02-16 03:05:40,297 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 273 transitions. Word has length 22 [2023-02-16 03:05:40,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:05:40,297 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 273 transitions. [2023-02-16 03:05:40,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:40,297 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 273 transitions. [2023-02-16 03:05:40,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-16 03:05:40,298 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:05:40,298 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:05:40,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-02-16 03:05:40,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:05:40,508 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:05:40,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:05:40,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1242696241, now seen corresponding path program 1 times [2023-02-16 03:05:40,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:05:40,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902156043] [2023-02-16 03:05:40,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:05:40,509 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 [2023-02-16 03:05:40,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:05:40,510 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) [2023-02-16 03:05:40,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-02-16 03:05:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:05:40,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-16 03:05:40,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:05:40,598 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 8 treesize of output 7 [2023-02-16 03:05:40,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 13 [2023-02-16 03:05:40,852 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:05:40,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:05:41,173 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:05:41,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:05:41,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902156043] [2023-02-16 03:05:41,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902156043] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:05:41,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:05:41,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-02-16 03:05:41,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572857214] [2023-02-16 03:05:41,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:05:41,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-16 03:05:41,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:05:41,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-16 03:05:41,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-02-16 03:05:41,177 INFO L87 Difference]: Start difference. First operand 208 states and 273 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:41,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:05:41,962 INFO L93 Difference]: Finished difference Result 245 states and 308 transitions. [2023-02-16 03:05:41,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-16 03:05:41,963 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-16 03:05:41,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:05:41,964 INFO L225 Difference]: With dead ends: 245 [2023-02-16 03:05:41,964 INFO L226 Difference]: Without dead ends: 245 [2023-02-16 03:05:41,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2023-02-16 03:05:41,965 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 433 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-16 03:05:41,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 333 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-16 03:05:41,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-02-16 03:05:41,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 155. [2023-02-16 03:05:41,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 141 states have (on average 1.3687943262411348) internal successors, (193), 154 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:41,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 193 transitions. [2023-02-16 03:05:41,969 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 193 transitions. Word has length 23 [2023-02-16 03:05:41,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:05:41,970 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 193 transitions. [2023-02-16 03:05:41,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:41,970 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 193 transitions. [2023-02-16 03:05:41,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-16 03:05:41,971 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:05:41,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:05:41,979 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 (19)] Ended with exit code 0 [2023-02-16 03:05:42,177 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 [2023-02-16 03:05:42,177 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:05:42,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:05:42,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1547664583, now seen corresponding path program 1 times [2023-02-16 03:05:42,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:05:42,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499429994] [2023-02-16 03:05:42,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:05:42,178 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 [2023-02-16 03:05:42,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:05:42,180 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) [2023-02-16 03:05:42,189 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 [2023-02-16 03:05:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:05:42,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-16 03:05:42,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:05:42,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2023-02-16 03:05:42,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:05:42,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:05:42,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:05:42,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:05:42,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:05:42,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:05:42,335 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:05:42,336 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:05:42,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-02-16 03:05:42,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2023-02-16 03:05:42,515 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:05:42,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 26 [2023-02-16 03:05:42,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 03:05:42,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:05:42,657 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_340 (Array (_ BitVec 32) (_ BitVec 8)))) (bvslt |c_ULTIMATE.start_lis_~max~0#1| (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_340) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|))))) is different from false [2023-02-16 03:05:42,665 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:05:42,665 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:05:42,666 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:05:42,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:05:42,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:05:42,693 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:05:42,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 203 treesize of output 99 [2023-02-16 03:05:42,852 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2023-02-16 03:05:42,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 119 treesize of output 102 [2023-02-16 03:05:42,856 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:05:42,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 23 treesize of output 9 [2023-02-16 03:05:43,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 03:05:43,158 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:05:43,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499429994] [2023-02-16 03:05:43,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499429994] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:05:43,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:05:43,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-02-16 03:05:43,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642953868] [2023-02-16 03:05:43,158 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:05:43,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 03:05:43,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:05:43,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 03:05:43,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2023-02-16 03:05:43,160 INFO L87 Difference]: Start difference. First operand 155 states and 193 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:44,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:05:44,593 INFO L93 Difference]: Finished difference Result 198 states and 247 transitions. [2023-02-16 03:05:44,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 03:05:44,594 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-02-16 03:05:44,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:05:44,594 INFO L225 Difference]: With dead ends: 198 [2023-02-16 03:05:44,594 INFO L226 Difference]: Without dead ends: 198 [2023-02-16 03:05:44,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=184, Unknown=1, NotChecked=30, Total=306 [2023-02-16 03:05:44,595 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 52 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:05:44,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 345 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 294 Invalid, 3 Unknown, 55 Unchecked, 1.2s Time] [2023-02-16 03:05:44,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-02-16 03:05:44,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 180. [2023-02-16 03:05:44,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 166 states have (on average 1.4156626506024097) internal successors, (235), 179 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:44,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 235 transitions. [2023-02-16 03:05:44,599 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 235 transitions. Word has length 26 [2023-02-16 03:05:44,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:05:44,599 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 235 transitions. [2023-02-16 03:05:44,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:44,600 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 235 transitions. [2023-02-16 03:05:44,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-16 03:05:44,600 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:05:44,600 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:05:44,613 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 [2023-02-16 03:05:44,810 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 [2023-02-16 03:05:44,811 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:05:44,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:05:44,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1090844182, now seen corresponding path program 2 times [2023-02-16 03:05:44,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:05:44,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411298648] [2023-02-16 03:05:44,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:05:44,812 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 [2023-02-16 03:05:44,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:05:44,813 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) [2023-02-16 03:05:44,815 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 [2023-02-16 03:05:44,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-16 03:05:44,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:05:44,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-16 03:05:44,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:05:44,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-02-16 03:05:44,937 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2023-02-16 03:05:44,938 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 4 case distinctions, treesize of input 22 treesize of output 38 [2023-02-16 03:05:44,971 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-16 03:05:44,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:05:44,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:05:44,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411298648] [2023-02-16 03:05:44,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411298648] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:05:44,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:05:44,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:05:44,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247859703] [2023-02-16 03:05:44,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:05:44,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:05:44,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:05:44,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:05:44,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:05:44,973 INFO L87 Difference]: Start difference. First operand 180 states and 235 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:45,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:05:45,055 INFO L93 Difference]: Finished difference Result 178 states and 225 transitions. [2023-02-16 03:05:45,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:05:45,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-16 03:05:45,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:05:45,057 INFO L225 Difference]: With dead ends: 178 [2023-02-16 03:05:45,057 INFO L226 Difference]: Without dead ends: 178 [2023-02-16 03:05:45,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:05:45,057 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 83 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:05:45,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 51 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:05:45,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-02-16 03:05:45,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2023-02-16 03:05:45,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 166 states have (on average 1.355421686746988) internal successors, (225), 177 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:45,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 225 transitions. [2023-02-16 03:05:45,061 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 225 transitions. Word has length 27 [2023-02-16 03:05:45,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:05:45,062 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 225 transitions. [2023-02-16 03:05:45,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:45,062 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 225 transitions. [2023-02-16 03:05:45,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-16 03:05:45,063 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:05:45,063 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:05:45,071 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 [2023-02-16 03:05:45,271 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 [2023-02-16 03:05:45,272 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:05:45,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:05:45,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1090844181, now seen corresponding path program 1 times [2023-02-16 03:05:45,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:05:45,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363498525] [2023-02-16 03:05:45,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:05:45,273 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 [2023-02-16 03:05:45,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:05:45,274 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) [2023-02-16 03:05:45,276 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 [2023-02-16 03:05:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:05:45,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-16 03:05:45,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:05:45,410 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 8 treesize of output 7 [2023-02-16 03:05:45,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-02-16 03:05:45,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:05:45,641 INFO L321 Elim1Store]: treesize reduction 28, result has 34.9 percent of original size [2023-02-16 03:05:45,641 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 2 case distinctions, treesize of input 24 treesize of output 30 [2023-02-16 03:05:45,657 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-02-16 03:05:45,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-02-16 03:05:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 03:05:46,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:05:48,894 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:05:48,897 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 03:05:48,898 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:05:48,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363498525] [2023-02-16 03:05:48,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363498525] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:05:48,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:05:48,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2023-02-16 03:05:48,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687659280] [2023-02-16 03:05:48,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:05:48,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-16 03:05:48,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:05:48,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-16 03:05:48,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-02-16 03:05:48,899 INFO L87 Difference]: Start difference. First operand 178 states and 225 transitions. Second operand has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:50,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:05:50,117 INFO L93 Difference]: Finished difference Result 264 states and 335 transitions. [2023-02-16 03:05:50,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-16 03:05:50,120 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-16 03:05:50,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:05:50,121 INFO L225 Difference]: With dead ends: 264 [2023-02-16 03:05:50,121 INFO L226 Difference]: Without dead ends: 264 [2023-02-16 03:05:50,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-02-16 03:05:50,122 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 471 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-16 03:05:50,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 140 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-16 03:05:50,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-02-16 03:05:50,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 184. [2023-02-16 03:05:50,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 172 states have (on average 1.3488372093023255) internal successors, (232), 183 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:50,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 232 transitions. [2023-02-16 03:05:50,126 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 232 transitions. Word has length 27 [2023-02-16 03:05:50,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:05:50,126 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 232 transitions. [2023-02-16 03:05:50,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:50,127 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 232 transitions. [2023-02-16 03:05:50,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-16 03:05:50,127 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:05:50,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:05:50,137 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 (22)] Ended with exit code 0 [2023-02-16 03:05:50,337 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 [2023-02-16 03:05:50,337 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:05:50,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:05:50,337 INFO L85 PathProgramCache]: Analyzing trace with hash -397297604, now seen corresponding path program 1 times [2023-02-16 03:05:50,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:05:50,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625203851] [2023-02-16 03:05:50,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:05:50,338 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 [2023-02-16 03:05:50,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:05:50,339 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) [2023-02-16 03:05:50,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-02-16 03:05:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:05:50,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-16 03:05:50,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:05:56,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 03:05:56,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:05:56,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:05:56,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625203851] [2023-02-16 03:05:56,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625203851] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:05:56,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:05:56,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 03:05:56,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474212696] [2023-02-16 03:05:56,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:05:56,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 03:05:56,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:05:56,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 03:05:56,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2023-02-16 03:05:56,734 INFO L87 Difference]: Start difference. First operand 184 states and 232 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:05:58,742 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] [2023-02-16 03:06:00,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:06:02,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:06:04,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:06:06,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:06:08,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:06:10,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:06:12,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:06:14,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:06:16,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:06:18,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:06:18,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:06:18,774 INFO L93 Difference]: Finished difference Result 183 states and 231 transitions. [2023-02-16 03:06:18,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 03:06:18,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-16 03:06:18,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:06:18,778 INFO L225 Difference]: With dead ends: 183 [2023-02-16 03:06:18,778 INFO L226 Difference]: Without dead ends: 158 [2023-02-16 03:06:18,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2023-02-16 03:06:18,779 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 32 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2023-02-16 03:06:18,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 200 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 11 Unknown, 0 Unchecked, 22.0s Time] [2023-02-16 03:06:18,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-02-16 03:06:18,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2023-02-16 03:06:18,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 147 states have (on average 1.3741496598639455) internal successors, (202), 157 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:18,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 202 transitions. [2023-02-16 03:06:18,782 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 202 transitions. Word has length 28 [2023-02-16 03:06:18,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:06:18,783 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 202 transitions. [2023-02-16 03:06:18,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:18,783 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 202 transitions. [2023-02-16 03:06:18,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-16 03:06:18,783 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:06:18,783 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:06:18,796 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 [2023-02-16 03:06:18,993 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 [2023-02-16 03:06:18,993 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:06:18,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:06:18,994 INFO L85 PathProgramCache]: Analyzing trace with hash 543568764, now seen corresponding path program 1 times [2023-02-16 03:06:18,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:06:18,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340690210] [2023-02-16 03:06:18,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:06:18,994 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 [2023-02-16 03:06:18,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:06:18,995 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) [2023-02-16 03:06:18,996 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 [2023-02-16 03:06:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:06:19,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 03:06:19,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:06:19,211 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-16 03:06:19,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:06:19,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:06:19,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340690210] [2023-02-16 03:06:19,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1340690210] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:06:19,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:06:19,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 03:06:19,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738691608] [2023-02-16 03:06:19,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:06:19,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 03:06:19,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:06:19,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 03:06:19,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-16 03:06:19,213 INFO L87 Difference]: Start difference. First operand 158 states and 202 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:19,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:06:19,513 INFO L93 Difference]: Finished difference Result 260 states and 337 transitions. [2023-02-16 03:06:19,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 03:06:19,514 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-16 03:06:19,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:06:19,515 INFO L225 Difference]: With dead ends: 260 [2023-02-16 03:06:19,515 INFO L226 Difference]: Without dead ends: 260 [2023-02-16 03:06:19,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2023-02-16 03:06:19,516 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 258 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 03:06:19,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 81 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 03:06:19,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-02-16 03:06:19,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 164. [2023-02-16 03:06:19,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 153 states have (on average 1.3594771241830066) internal successors, (208), 163 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:19,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 208 transitions. [2023-02-16 03:06:19,520 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 208 transitions. Word has length 28 [2023-02-16 03:06:19,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:06:19,520 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 208 transitions. [2023-02-16 03:06:19,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:19,521 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 208 transitions. [2023-02-16 03:06:19,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-16 03:06:19,521 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:06:19,521 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:06:19,531 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 (24)] Ended with exit code 0 [2023-02-16 03:06:19,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:06:19,731 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:06:19,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:06:19,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1430352431, now seen corresponding path program 1 times [2023-02-16 03:06:19,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:06:19,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993306459] [2023-02-16 03:06:19,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:06:19,733 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 [2023-02-16 03:06:19,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:06:19,734 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:06:19,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-02-16 03:06:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:06:19,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-16 03:06:19,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:06:19,975 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 03:06:19,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:06:20,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 27 treesize of output 23 [2023-02-16 03:06:20,228 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 03:06:20,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:06:20,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993306459] [2023-02-16 03:06:20,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993306459] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:06:20,229 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:06:20,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-02-16 03:06:20,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461664793] [2023-02-16 03:06:20,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:06:20,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-16 03:06:20,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:06:20,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-16 03:06:20,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-02-16 03:06:20,231 INFO L87 Difference]: Start difference. First operand 164 states and 208 transitions. Second operand has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:21,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:06:21,287 INFO L93 Difference]: Finished difference Result 412 states and 535 transitions. [2023-02-16 03:06:21,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-16 03:06:21,288 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-02-16 03:06:21,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:06:21,289 INFO L225 Difference]: With dead ends: 412 [2023-02-16 03:06:21,290 INFO L226 Difference]: Without dead ends: 412 [2023-02-16 03:06:21,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-02-16 03:06:21,290 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 504 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-16 03:06:21,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 142 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-16 03:06:21,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2023-02-16 03:06:21,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 170. [2023-02-16 03:06:21,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 159 states have (on average 1.3522012578616351) internal successors, (215), 169 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:21,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 215 transitions. [2023-02-16 03:06:21,295 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 215 transitions. Word has length 31 [2023-02-16 03:06:21,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:06:21,296 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 215 transitions. [2023-02-16 03:06:21,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:21,296 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 215 transitions. [2023-02-16 03:06:21,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-16 03:06:21,296 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:06:21,297 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:06:21,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-02-16 03:06:21,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:06:21,508 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:06:21,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:06:21,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1391261449, now seen corresponding path program 1 times [2023-02-16 03:06:21,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:06:21,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289679420] [2023-02-16 03:06:21,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:06:21,510 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 [2023-02-16 03:06:21,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:06:21,511 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) [2023-02-16 03:06:21,514 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 [2023-02-16 03:06:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:06:21,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-16 03:06:21,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:06:21,649 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-16 03:06:21,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:06:21,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:06:21,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289679420] [2023-02-16 03:06:21,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [289679420] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:06:21,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:06:21,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:06:21,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820731195] [2023-02-16 03:06:21,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:06:21,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 03:06:21,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:06:21,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 03:06:21,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:06:21,651 INFO L87 Difference]: Start difference. First operand 170 states and 215 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:21,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:06:21,665 INFO L93 Difference]: Finished difference Result 170 states and 212 transitions. [2023-02-16 03:06:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 03:06:21,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-02-16 03:06:21,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:06:21,667 INFO L225 Difference]: With dead ends: 170 [2023-02-16 03:06:21,667 INFO L226 Difference]: Without dead ends: 170 [2023-02-16 03:06:21,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:06:21,668 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 03:06:21,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 03:06:21,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-02-16 03:06:21,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-02-16 03:06:21,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 160 states have (on average 1.325) internal successors, (212), 169 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:21,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 212 transitions. [2023-02-16 03:06:21,672 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 212 transitions. Word has length 32 [2023-02-16 03:06:21,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:06:21,673 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 212 transitions. [2023-02-16 03:06:21,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:21,673 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 212 transitions. [2023-02-16 03:06:21,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-16 03:06:21,673 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:06:21,673 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:06:21,687 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 [2023-02-16 03:06:21,887 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 [2023-02-16 03:06:21,887 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:06:21,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:06:21,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1391252418, now seen corresponding path program 1 times [2023-02-16 03:06:21,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:06:21,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414936072] [2023-02-16 03:06:21,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:06:21,888 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 [2023-02-16 03:06:21,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:06:21,890 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) [2023-02-16 03:06:21,893 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 [2023-02-16 03:06:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:06:22,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-16 03:06:22,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:06:22,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 03:06:22,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:06:22,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 25 treesize of output 21 [2023-02-16 03:06:22,390 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 03:06:22,391 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:06:22,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414936072] [2023-02-16 03:06:22,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414936072] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:06:22,391 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:06:22,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-02-16 03:06:22,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690652404] [2023-02-16 03:06:22,392 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:06:22,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-16 03:06:22,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:06:22,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-16 03:06:22,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-02-16 03:06:22,393 INFO L87 Difference]: Start difference. First operand 170 states and 212 transitions. Second operand has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:23,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:06:23,615 INFO L93 Difference]: Finished difference Result 659 states and 833 transitions. [2023-02-16 03:06:23,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-16 03:06:23,616 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-02-16 03:06:23,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:06:23,618 INFO L225 Difference]: With dead ends: 659 [2023-02-16 03:06:23,618 INFO L226 Difference]: Without dead ends: 659 [2023-02-16 03:06:23,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2023-02-16 03:06:23,618 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 800 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-16 03:06:23,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 159 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-16 03:06:23,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-02-16 03:06:23,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 235. [2023-02-16 03:06:23,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 226 states have (on average 1.345132743362832) internal successors, (304), 234 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:23,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 304 transitions. [2023-02-16 03:06:23,625 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 304 transitions. Word has length 32 [2023-02-16 03:06:23,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:06:23,625 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 304 transitions. [2023-02-16 03:06:23,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:23,625 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 304 transitions. [2023-02-16 03:06:23,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-16 03:06:23,626 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:06:23,626 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:06:23,642 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 [2023-02-16 03:06:23,826 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 [2023-02-16 03:06:23,827 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:06:23,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:06:23,827 INFO L85 PathProgramCache]: Analyzing trace with hash 155161166, now seen corresponding path program 3 times [2023-02-16 03:06:23,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:06:23,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1296483564] [2023-02-16 03:06:23,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 03:06:23,828 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 [2023-02-16 03:06:23,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:06:23,829 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) [2023-02-16 03:06:23,830 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 [2023-02-16 03:06:24,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-16 03:06:24,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:06:24,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-16 03:06:24,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:06:24,073 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 8 treesize of output 7 [2023-02-16 03:06:24,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:06:24,280 INFO L321 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2023-02-16 03:06:24,280 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 1 case distinctions, treesize of input 24 treesize of output 30 [2023-02-16 03:06:24,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2023-02-16 03:06:24,617 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:06:24,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:06:25,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2023-02-16 03:06:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:06:25,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:06:25,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1296483564] [2023-02-16 03:06:25,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1296483564] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:06:25,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:06:25,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2023-02-16 03:06:25,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861520144] [2023-02-16 03:06:25,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:06:25,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-16 03:06:25,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:06:25,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-16 03:06:25,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2023-02-16 03:06:25,958 INFO L87 Difference]: Start difference. First operand 235 states and 304 transitions. Second operand has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:29,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:06:29,403 INFO L93 Difference]: Finished difference Result 369 states and 468 transitions. [2023-02-16 03:06:29,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-16 03:06:29,404 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-02-16 03:06:29,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:06:29,405 INFO L225 Difference]: With dead ends: 369 [2023-02-16 03:06:29,405 INFO L226 Difference]: Without dead ends: 347 [2023-02-16 03:06:29,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=340, Invalid=1066, Unknown=0, NotChecked=0, Total=1406 [2023-02-16 03:06:29,406 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 413 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-02-16 03:06:29,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 361 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-02-16 03:06:29,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-02-16 03:06:29,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 310. [2023-02-16 03:06:29,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 301 states have (on average 1.3156146179401993) internal successors, (396), 309 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:29,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 396 transitions. [2023-02-16 03:06:29,412 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 396 transitions. Word has length 32 [2023-02-16 03:06:29,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:06:29,412 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 396 transitions. [2023-02-16 03:06:29,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:29,412 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 396 transitions. [2023-02-16 03:06:29,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-16 03:06:29,413 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:06:29,413 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:06:29,425 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 [2023-02-16 03:06:29,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:06:29,624 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:06:29,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:06:29,624 INFO L85 PathProgramCache]: Analyzing trace with hash 646893308, now seen corresponding path program 1 times [2023-02-16 03:06:29,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:06:29,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172371884] [2023-02-16 03:06:29,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:06:29,625 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 [2023-02-16 03:06:29,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:06:29,626 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:06:29,629 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 (29)] Waiting until timeout for monitored process [2023-02-16 03:06:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:06:29,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 03:06:29,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:06:29,786 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-16 03:06:29,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:06:29,826 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-16 03:06:29,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:06:29,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172371884] [2023-02-16 03:06:29,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172371884] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:06:29,827 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:06:29,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-16 03:06:29,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175193597] [2023-02-16 03:06:29,827 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:06:29,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 03:06:29,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:06:29,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 03:06:29,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:06:29,828 INFO L87 Difference]: Start difference. First operand 310 states and 396 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:30,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:06:30,053 INFO L93 Difference]: Finished difference Result 293 states and 368 transitions. [2023-02-16 03:06:30,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 03:06:30,054 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-02-16 03:06:30,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:06:30,055 INFO L225 Difference]: With dead ends: 293 [2023-02-16 03:06:30,055 INFO L226 Difference]: Without dead ends: 288 [2023-02-16 03:06:30,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:06:30,056 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 33 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:06:30,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 124 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 03:06:30,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-02-16 03:06:30,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 277. [2023-02-16 03:06:30,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 268 states have (on average 1.3059701492537314) internal successors, (350), 276 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:30,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 350 transitions. [2023-02-16 03:06:30,061 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 350 transitions. Word has length 35 [2023-02-16 03:06:30,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:06:30,061 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 350 transitions. [2023-02-16 03:06:30,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:30,061 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 350 transitions. [2023-02-16 03:06:30,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-16 03:06:30,062 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:06:30,062 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:06:30,072 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 (29)] Ended with exit code 0 [2023-02-16 03:06:30,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:06:30,272 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:06:30,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:06:30,273 INFO L85 PathProgramCache]: Analyzing trace with hash 770896954, now seen corresponding path program 2 times [2023-02-16 03:06:30,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:06:30,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929447976] [2023-02-16 03:06:30,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:06:30,273 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 [2023-02-16 03:06:30,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:06:30,274 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) [2023-02-16 03:06:30,275 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 [2023-02-16 03:06:30,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-16 03:06:30,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:06:30,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-16 03:06:30,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:06:30,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2023-02-16 03:06:30,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-02-16 03:06:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-02-16 03:06:30,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:06:32,485 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:06:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-02-16 03:06:32,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:06:32,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929447976] [2023-02-16 03:06:32,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929447976] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:06:32,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:06:32,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2023-02-16 03:06:32,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405582885] [2023-02-16 03:06:32,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:06:32,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 03:06:32,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:06:32,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 03:06:32,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-16 03:06:32,489 INFO L87 Difference]: Start difference. First operand 277 states and 350 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:32,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:06:32,937 INFO L93 Difference]: Finished difference Result 282 states and 351 transitions. [2023-02-16 03:06:32,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 03:06:32,938 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-02-16 03:06:32,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:06:32,939 INFO L225 Difference]: With dead ends: 282 [2023-02-16 03:06:32,939 INFO L226 Difference]: Without dead ends: 257 [2023-02-16 03:06:32,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-02-16 03:06:32,940 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 160 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 03:06:32,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 49 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-16 03:06:32,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-02-16 03:06:32,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 227. [2023-02-16 03:06:32,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 220 states have (on average 1.3136363636363637) internal successors, (289), 226 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:32,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 289 transitions. [2023-02-16 03:06:32,944 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 289 transitions. Word has length 37 [2023-02-16 03:06:32,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:06:32,944 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 289 transitions. [2023-02-16 03:06:32,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:32,945 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 289 transitions. [2023-02-16 03:06:32,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-16 03:06:32,945 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:06:32,945 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:06:32,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2023-02-16 03:06:33,153 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 [2023-02-16 03:06:33,153 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:06:33,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:06:33,153 INFO L85 PathProgramCache]: Analyzing trace with hash 601007766, now seen corresponding path program 4 times [2023-02-16 03:06:33,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:06:33,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226652345] [2023-02-16 03:06:33,154 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 03:06:33,154 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 [2023-02-16 03:06:33,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:06:33,155 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) [2023-02-16 03:06:33,156 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 [2023-02-16 03:06:33,281 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 03:06:33,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:06:33,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-16 03:06:33,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:06:33,430 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-02-16 03:06:33,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 17 [2023-02-16 03:06:33,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2023-02-16 03:06:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 03:06:33,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:06:34,756 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 03:06:34,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:06:34,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226652345] [2023-02-16 03:06:34,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226652345] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:06:34,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:06:34,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2023-02-16 03:06:34,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000105673] [2023-02-16 03:06:34,757 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:06:34,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-16 03:06:34,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:06:34,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-16 03:06:34,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2023-02-16 03:06:34,759 INFO L87 Difference]: Start difference. First operand 227 states and 289 transitions. Second operand has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:38,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:06:41,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:06:41,401 INFO L93 Difference]: Finished difference Result 464 states and 579 transitions. [2023-02-16 03:06:41,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-16 03:06:41,402 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-02-16 03:06:41,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:06:41,404 INFO L225 Difference]: With dead ends: 464 [2023-02-16 03:06:41,404 INFO L226 Difference]: Without dead ends: 422 [2023-02-16 03:06:41,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=449, Invalid=1531, Unknown=0, NotChecked=0, Total=1980 [2023-02-16 03:06:41,405 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 893 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-02-16 03:06:41,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 538 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-02-16 03:06:41,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-02-16 03:06:41,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 334. [2023-02-16 03:06:41,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 327 states have (on average 1.3149847094801224) internal successors, (430), 333 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:41,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 430 transitions. [2023-02-16 03:06:41,410 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 430 transitions. Word has length 40 [2023-02-16 03:06:41,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:06:41,411 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 430 transitions. [2023-02-16 03:06:41,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:41,411 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 430 transitions. [2023-02-16 03:06:41,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-16 03:06:41,412 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:06:41,412 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:06:41,427 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 [2023-02-16 03:06:41,623 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 [2023-02-16 03:06:41,623 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:06:41,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:06:41,624 INFO L85 PathProgramCache]: Analyzing trace with hash -528832743, now seen corresponding path program 5 times [2023-02-16 03:06:41,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:06:41,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736577660] [2023-02-16 03:06:41,624 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-16 03:06:41,624 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 [2023-02-16 03:06:41,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:06:41,625 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) [2023-02-16 03:06:41,626 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 [2023-02-16 03:06:41,890 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-02-16 03:06:41,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:06:41,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-16 03:06:41,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:06:41,946 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 8 treesize of output 7 [2023-02-16 03:06:42,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 13 [2023-02-16 03:06:42,503 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 21 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 03:06:42,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:06:43,569 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 22 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 03:06:43,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:06:43,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736577660] [2023-02-16 03:06:43,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736577660] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:06:43,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:06:43,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2023-02-16 03:06:43,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091553393] [2023-02-16 03:06:43,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:06:43,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-16 03:06:43,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:06:43,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-16 03:06:43,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2023-02-16 03:06:43,571 INFO L87 Difference]: Start difference. First operand 334 states and 430 transitions. Second operand has 28 states, 28 states have (on average 2.892857142857143) internal successors, (81), 28 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:46,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:06:46,505 INFO L93 Difference]: Finished difference Result 590 states and 748 transitions. [2023-02-16 03:06:46,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-16 03:06:46,506 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.892857142857143) internal successors, (81), 28 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-02-16 03:06:46,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:06:46,508 INFO L225 Difference]: With dead ends: 590 [2023-02-16 03:06:46,508 INFO L226 Difference]: Without dead ends: 585 [2023-02-16 03:06:46,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=356, Invalid=1536, Unknown=0, NotChecked=0, Total=1892 [2023-02-16 03:06:46,509 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1156 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-02-16 03:06:46,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 859 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-02-16 03:06:46,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2023-02-16 03:06:46,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 501. [2023-02-16 03:06:46,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 494 states have (on average 1.3097165991902835) internal successors, (647), 500 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 647 transitions. [2023-02-16 03:06:46,515 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 647 transitions. Word has length 44 [2023-02-16 03:06:46,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:06:46,516 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 647 transitions. [2023-02-16 03:06:46,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.892857142857143) internal successors, (81), 28 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:46,516 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 647 transitions. [2023-02-16 03:06:46,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-16 03:06:46,517 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:06:46,517 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:06:46,528 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 (32)] Ended with exit code 0 [2023-02-16 03:06:46,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:06:46,728 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:06:46,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:06:46,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1489492489, now seen corresponding path program 1 times [2023-02-16 03:06:46,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:06:46,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891826531] [2023-02-16 03:06:46,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:06:46,729 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 [2023-02-16 03:06:46,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:06:46,730 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:06:46,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-02-16 03:06:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:06:46,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-16 03:06:46,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:06:47,074 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-16 03:06:47,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:06:47,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 38 treesize of output 32 [2023-02-16 03:06:47,916 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-16 03:06:47,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:06:47,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891826531] [2023-02-16 03:06:47,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891826531] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:06:47,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:06:47,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-02-16 03:06:47,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445508680] [2023-02-16 03:06:47,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:06:47,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-16 03:06:47,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:06:47,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-16 03:06:47,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2023-02-16 03:06:47,918 INFO L87 Difference]: Start difference. First operand 501 states and 647 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:55,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:06:55,921 INFO L93 Difference]: Finished difference Result 1467 states and 1941 transitions. [2023-02-16 03:06:55,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-16 03:06:55,923 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-02-16 03:06:55,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:06:55,930 INFO L225 Difference]: With dead ends: 1467 [2023-02-16 03:06:55,930 INFO L226 Difference]: Without dead ends: 1467 [2023-02-16 03:06:55,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=302, Invalid=1030, Unknown=0, NotChecked=0, Total=1332 [2023-02-16 03:06:55,931 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 1315 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-02-16 03:06:55,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 301 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-02-16 03:06:55,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2023-02-16 03:06:55,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 723. [2023-02-16 03:06:55,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 716 states have (on average 1.3519553072625698) internal successors, (968), 722 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:55,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 968 transitions. [2023-02-16 03:06:55,944 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 968 transitions. Word has length 44 [2023-02-16 03:06:55,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:06:55,944 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 968 transitions. [2023-02-16 03:06:55,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:06:55,945 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 968 transitions. [2023-02-16 03:06:55,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-16 03:06:55,945 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:06:55,945 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:06:55,956 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 (33)] Ended with exit code 0 [2023-02-16 03:06:56,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:06:56,156 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:06:56,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:06:56,157 INFO L85 PathProgramCache]: Analyzing trace with hash -484234273, now seen corresponding path program 1 times [2023-02-16 03:06:56,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:06:56,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382212545] [2023-02-16 03:06:56,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:06:56,157 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 [2023-02-16 03:06:56,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:06:56,158 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:06:56,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-02-16 03:06:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:06:56,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-16 03:06:56,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:06:56,335 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 8 treesize of output 7 [2023-02-16 03:06:56,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-02-16 03:06:56,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:06:56,605 INFO L321 Elim1Store]: treesize reduction 28, result has 34.9 percent of original size [2023-02-16 03:06:56,605 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 2 case distinctions, treesize of input 24 treesize of output 30 [2023-02-16 03:06:56,620 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-02-16 03:06:56,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-02-16 03:06:57,299 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-16 03:06:57,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:06:59,604 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:06:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-16 03:06:59,611 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:06:59,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382212545] [2023-02-16 03:06:59,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382212545] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:06:59,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:06:59,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-02-16 03:06:59,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346585673] [2023-02-16 03:06:59,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:06:59,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-16 03:06:59,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:06:59,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-16 03:06:59,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-02-16 03:06:59,612 INFO L87 Difference]: Start difference. First operand 723 states and 968 transitions. Second operand has 18 states, 17 states have (on average 4.235294117647059) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:07:03,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:07:03,862 INFO L93 Difference]: Finished difference Result 810 states and 1073 transitions. [2023-02-16 03:07:03,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-16 03:07:03,863 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.235294117647059) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-02-16 03:07:03,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:07:03,865 INFO L225 Difference]: With dead ends: 810 [2023-02-16 03:07:03,865 INFO L226 Difference]: Without dead ends: 810 [2023-02-16 03:07:03,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2023-02-16 03:07:03,866 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 402 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-16 03:07:03,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 159 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-16 03:07:03,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2023-02-16 03:07:03,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 723. [2023-02-16 03:07:03,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 716 states have (on average 1.344972067039106) internal successors, (963), 722 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:07:03,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 963 transitions. [2023-02-16 03:07:03,876 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 963 transitions. Word has length 45 [2023-02-16 03:07:03,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:07:03,876 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 963 transitions. [2023-02-16 03:07:03,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.235294117647059) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:07:03,877 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 963 transitions. [2023-02-16 03:07:03,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-16 03:07:03,877 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:07:03,877 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1] [2023-02-16 03:07:03,887 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 (34)] Ended with exit code 0 [2023-02-16 03:07:04,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:07:04,083 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:07:04,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:07:04,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1048882662, now seen corresponding path program 3 times [2023-02-16 03:07:04,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:07:04,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1414545048] [2023-02-16 03:07:04,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 03:07:04,084 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 [2023-02-16 03:07:04,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:07:04,085 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:07:04,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-02-16 03:07:04,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-16 03:07:04,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:07:04,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-16 03:07:04,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:07:04,301 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 8 treesize of output 7 [2023-02-16 03:07:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:07:05,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:07:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:07:08,077 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:07:08,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1414545048] [2023-02-16 03:07:08,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1414545048] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:07:08,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:07:08,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2023-02-16 03:07:08,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284215719] [2023-02-16 03:07:08,078 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:07:08,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-02-16 03:07:08,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:07:08,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-02-16 03:07:08,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=637, Unknown=0, NotChecked=0, Total=870 [2023-02-16 03:07:08,079 INFO L87 Difference]: Start difference. First operand 723 states and 963 transitions. Second operand has 30 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:07:35,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:07:35,765 INFO L93 Difference]: Finished difference Result 3458 states and 4741 transitions. [2023-02-16 03:07:35,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-02-16 03:07:35,766 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-02-16 03:07:35,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:07:35,773 INFO L225 Difference]: With dead ends: 3458 [2023-02-16 03:07:35,773 INFO L226 Difference]: Without dead ends: 3458 [2023-02-16 03:07:35,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=1166, Invalid=2494, Unknown=0, NotChecked=0, Total=3660 [2023-02-16 03:07:35,774 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 2233 mSDsluCounter, 2276 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2233 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 2440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-02-16 03:07:35,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2233 Valid, 2475 Invalid, 2440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-02-16 03:07:35,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3458 states. [2023-02-16 03:07:35,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3458 to 771. [2023-02-16 03:07:35,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 764 states have (on average 1.3390052356020943) internal successors, (1023), 770 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:07:35,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1023 transitions. [2023-02-16 03:07:35,793 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1023 transitions. Word has length 46 [2023-02-16 03:07:35,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:07:35,793 INFO L495 AbstractCegarLoop]: Abstraction has 771 states and 1023 transitions. [2023-02-16 03:07:35,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:07:35,793 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1023 transitions. [2023-02-16 03:07:35,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-16 03:07:35,794 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:07:35,794 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:07:35,804 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 (35)] Forceful destruction successful, exit code 0 [2023-02-16 03:07:36,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:07:36,005 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:07:36,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:07:36,005 INFO L85 PathProgramCache]: Analyzing trace with hash -2126360568, now seen corresponding path program 1 times [2023-02-16 03:07:36,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:07:36,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940384942] [2023-02-16 03:07:36,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:07:36,006 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 [2023-02-16 03:07:36,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:07:36,007 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:07:36,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-02-16 03:07:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:07:36,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 03:07:36,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:07:36,287 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-16 03:07:36,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:07:36,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 25 treesize of output 21 [2023-02-16 03:07:36,770 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-16 03:07:36,770 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:07:36,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940384942] [2023-02-16 03:07:36,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940384942] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:07:36,770 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:07:36,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-02-16 03:07:36,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328191489] [2023-02-16 03:07:36,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:07:36,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 03:07:36,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:07:36,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 03:07:36,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-02-16 03:07:36,771 INFO L87 Difference]: Start difference. First operand 771 states and 1023 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:07:37,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:07:37,832 INFO L93 Difference]: Finished difference Result 969 states and 1221 transitions. [2023-02-16 03:07:37,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-16 03:07:37,833 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-02-16 03:07:37,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:07:37,836 INFO L225 Difference]: With dead ends: 969 [2023-02-16 03:07:37,836 INFO L226 Difference]: Without dead ends: 969 [2023-02-16 03:07:37,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=170, Invalid=336, Unknown=0, NotChecked=0, Total=506 [2023-02-16 03:07:37,837 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 548 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-16 03:07:37,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 137 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-16 03:07:37,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2023-02-16 03:07:37,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 771. [2023-02-16 03:07:37,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 764 states have (on average 1.2958115183246073) internal successors, (990), 770 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:07:37,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 990 transitions. [2023-02-16 03:07:37,852 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 990 transitions. Word has length 46 [2023-02-16 03:07:37,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:07:37,852 INFO L495 AbstractCegarLoop]: Abstraction has 771 states and 990 transitions. [2023-02-16 03:07:37,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:07:37,853 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 990 transitions. [2023-02-16 03:07:37,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-16 03:07:37,854 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:07:37,854 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:07:37,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2023-02-16 03:07:38,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:07:38,064 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:07:38,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:07:38,065 INFO L85 PathProgramCache]: Analyzing trace with hash 274247196, now seen corresponding path program 6 times [2023-02-16 03:07:38,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:07:38,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2147333453] [2023-02-16 03:07:38,065 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-16 03:07:38,065 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 [2023-02-16 03:07:38,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:07:38,067 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:07:38,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-02-16 03:07:38,284 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-02-16 03:07:38,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:07:38,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-16 03:07:38,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:07:38,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:07:38,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-02-16 03:07:38,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2023-02-16 03:07:38,792 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-16 03:07:38,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:07:40,030 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:07:40,236 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-16 03:07:40,236 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:07:40,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2147333453] [2023-02-16 03:07:40,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2147333453] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:07:40,236 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:07:40,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-02-16 03:07:40,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558977748] [2023-02-16 03:07:40,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:07:40,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-16 03:07:40,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:07:40,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-16 03:07:40,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2023-02-16 03:07:40,238 INFO L87 Difference]: Start difference. First operand 771 states and 990 transitions. Second operand has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:07:48,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:07:51,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:07:53,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:07:56,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:07:58,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:08:01,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:08:03,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:08:05,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:08:07,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:08:09,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:08:12,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:08:14,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:08:17,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:08:19,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:08:21,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:08:21,475 INFO L93 Difference]: Finished difference Result 2364 states and 3055 transitions. [2023-02-16 03:08:21,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-16 03:08:21,477 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-02-16 03:08:21,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:08:21,481 INFO L225 Difference]: With dead ends: 2364 [2023-02-16 03:08:21,481 INFO L226 Difference]: Without dead ends: 2341 [2023-02-16 03:08:21,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=688, Invalid=1862, Unknown=0, NotChecked=0, Total=2550 [2023-02-16 03:08:21,482 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 1323 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 161 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.3s IncrementalHoareTripleChecker+Time [2023-02-16 03:08:21,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1323 Valid, 653 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1385 Invalid, 4 Unknown, 0 Unchecked, 35.3s Time] [2023-02-16 03:08:21,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2023-02-16 03:08:21,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1841. [2023-02-16 03:08:21,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1834 states have (on average 1.3206106870229009) internal successors, (2422), 1840 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:08:21,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2422 transitions. [2023-02-16 03:08:21,515 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2422 transitions. Word has length 48 [2023-02-16 03:08:21,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:08:21,515 INFO L495 AbstractCegarLoop]: Abstraction has 1841 states and 2422 transitions. [2023-02-16 03:08:21,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:08:21,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2422 transitions. [2023-02-16 03:08:21,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-16 03:08:21,516 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:08:21,517 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:08:21,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-02-16 03:08:21,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:08:21,728 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:08:21,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:08:21,729 INFO L85 PathProgramCache]: Analyzing trace with hash 971260211, now seen corresponding path program 2 times [2023-02-16 03:08:21,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:08:21,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591152402] [2023-02-16 03:08:21,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:08:21,729 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 [2023-02-16 03:08:21,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:08:21,730 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:08:21,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-02-16 03:08:21,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-16 03:08:21,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:08:21,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-16 03:08:21,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:08:21,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-02-16 03:08:21,870 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 8 treesize of output 7 [2023-02-16 03:08:22,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:08:22,047 INFO L321 Elim1Store]: treesize reduction 28, result has 34.9 percent of original size [2023-02-16 03:08:22,047 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 2 case distinctions, treesize of input 19 treesize of output 27 [2023-02-16 03:08:22,062 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-02-16 03:08:22,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-02-16 03:08:22,378 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-02-16 03:08:22,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:08:27,700 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:08:27,870 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-02-16 03:08:27,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:08:27,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591152402] [2023-02-16 03:08:27,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591152402] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:08:27,870 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:08:27,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-02-16 03:08:27,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128073679] [2023-02-16 03:08:27,871 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:08:27,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 03:08:27,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:08:27,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 03:08:27,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-02-16 03:08:27,872 INFO L87 Difference]: Start difference. First operand 1841 states and 2422 transitions. Second operand has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:08:29,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:08:29,006 INFO L93 Difference]: Finished difference Result 1879 states and 2424 transitions. [2023-02-16 03:08:29,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 03:08:29,008 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-02-16 03:08:29,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:08:29,012 INFO L225 Difference]: With dead ends: 1879 [2023-02-16 03:08:29,012 INFO L226 Difference]: Without dead ends: 1879 [2023-02-16 03:08:29,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2023-02-16 03:08:29,012 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 364 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-16 03:08:29,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 49 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-16 03:08:29,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2023-02-16 03:08:29,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1836. [2023-02-16 03:08:29,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1836 states, 1830 states have (on average 1.3) internal successors, (2379), 1835 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:08:29,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2379 transitions. [2023-02-16 03:08:29,042 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2379 transitions. Word has length 48 [2023-02-16 03:08:29,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:08:29,042 INFO L495 AbstractCegarLoop]: Abstraction has 1836 states and 2379 transitions. [2023-02-16 03:08:29,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:08:29,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2379 transitions. [2023-02-16 03:08:29,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-16 03:08:29,044 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:08:29,044 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:08:29,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-02-16 03:08:29,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:08:29,253 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:08:29,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:08:29,253 INFO L85 PathProgramCache]: Analyzing trace with hash 2107734792, now seen corresponding path program 2 times [2023-02-16 03:08:29,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:08:29,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734626530] [2023-02-16 03:08:29,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:08:29,254 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 [2023-02-16 03:08:29,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:08:29,255 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:08:29,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-02-16 03:08:29,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 03:08:29,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:08:29,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 03:08:29,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:08:29,542 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-02-16 03:08:29,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:08:29,714 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-02-16 03:08:29,714 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:08:29,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734626530] [2023-02-16 03:08:29,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734626530] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:08:29,714 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:08:29,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-02-16 03:08:29,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532037514] [2023-02-16 03:08:29,715 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:08:29,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 03:08:29,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:08:29,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 03:08:29,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-02-16 03:08:29,716 INFO L87 Difference]: Start difference. First operand 1836 states and 2379 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:08:30,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:08:30,681 INFO L93 Difference]: Finished difference Result 1873 states and 2389 transitions. [2023-02-16 03:08:30,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-16 03:08:30,682 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-02-16 03:08:30,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:08:30,686 INFO L225 Difference]: With dead ends: 1873 [2023-02-16 03:08:30,686 INFO L226 Difference]: Without dead ends: 1873 [2023-02-16 03:08:30,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-02-16 03:08:30,686 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 141 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-16 03:08:30,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 263 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-16 03:08:30,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2023-02-16 03:08:30,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1828. [2023-02-16 03:08:30,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1828 states, 1822 states have (on average 1.283205268935236) internal successors, (2338), 1827 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:08:30,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2338 transitions. [2023-02-16 03:08:30,711 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2338 transitions. Word has length 60 [2023-02-16 03:08:30,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:08:30,712 INFO L495 AbstractCegarLoop]: Abstraction has 1828 states and 2338 transitions. [2023-02-16 03:08:30,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:08:30,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2338 transitions. [2023-02-16 03:08:30,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-02-16 03:08:30,713 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:08:30,713 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:08:30,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2023-02-16 03:08:30,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:08:30,925 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:08:30,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:08:30,925 INFO L85 PathProgramCache]: Analyzing trace with hash 667596367, now seen corresponding path program 2 times [2023-02-16 03:08:30,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:08:30,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314673626] [2023-02-16 03:08:30,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:08:30,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:08:30,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:08:30,927 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:08:30,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-02-16 03:08:31,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 03:08:31,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:08:31,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-16 03:08:31,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:08:31,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:08:31,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-02-16 03:08:31,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2023-02-16 03:08:32,980 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-02-16 03:08:32,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:08:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 38 proven. 36 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-02-16 03:08:34,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:08:34,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314673626] [2023-02-16 03:08:34,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314673626] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:08:34,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:08:34,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2023-02-16 03:08:34,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60673552] [2023-02-16 03:08:34,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:08:34,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-16 03:08:34,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:08:34,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-16 03:08:34,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2023-02-16 03:08:34,802 INFO L87 Difference]: Start difference. First operand 1828 states and 2338 transitions. Second operand has 21 states, 20 states have (on average 4.5) internal successors, (90), 21 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:08:39,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:08:46,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:08:46,912 INFO L93 Difference]: Finished difference Result 4348 states and 5611 transitions. [2023-02-16 03:08:46,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-16 03:08:46,914 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.5) internal successors, (90), 21 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-02-16 03:08:46,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:08:46,925 INFO L225 Difference]: With dead ends: 4348 [2023-02-16 03:08:46,926 INFO L226 Difference]: Without dead ends: 4348 [2023-02-16 03:08:46,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=449, Invalid=1713, Unknown=0, NotChecked=0, Total=2162 [2023-02-16 03:08:46,928 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 1054 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-02-16 03:08:46,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 647 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-02-16 03:08:46,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4348 states. [2023-02-16 03:08:46,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4348 to 2791. [2023-02-16 03:08:46,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2785 states have (on average 1.3062836624775584) internal successors, (3638), 2790 states have internal predecessors, (3638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:08:46,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 3638 transitions. [2023-02-16 03:08:46,973 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 3638 transitions. Word has length 68 [2023-02-16 03:08:46,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:08:46,973 INFO L495 AbstractCegarLoop]: Abstraction has 2791 states and 3638 transitions. [2023-02-16 03:08:46,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.5) internal successors, (90), 21 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:08:46,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 3638 transitions. [2023-02-16 03:08:46,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-16 03:08:46,974 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:08:46,975 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:08:46,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2023-02-16 03:08:47,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:08:47,187 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-16 03:08:47,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:08:47,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1006169554, now seen corresponding path program 3 times [2023-02-16 03:08:47,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:08:47,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340334149] [2023-02-16 03:08:47,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 03:08:47,188 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 [2023-02-16 03:08:47,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:08:47,189 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:08:47,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-02-16 03:08:47,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-16 03:08:47,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:08:47,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-16 03:08:47,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:08:47,566 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-02-16 03:08:47,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 15 [2023-02-16 03:08:47,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2023-02-16 03:08:48,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:08:48,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:08:48,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:08:48,349 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:08:48,350 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:08:48,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 52 [2023-02-16 03:08:48,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2023-02-16 03:08:52,426 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:08:52,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:08:52,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:08:52,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:08:52,434 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:08:52,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:08:52,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:08:52,438 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:08:52,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:08:52,442 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:08:52,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 22 [2023-02-16 03:08:52,505 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-02-16 03:08:52,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:08:53,571 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:08:53,572 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:08:53,572 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:08:53,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:08:53,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:08:53,619 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:08:53,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 216 treesize of output 112 [2023-02-16 03:08:53,636 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:08:53,637 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:08:53,642 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:08:53,647 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:08:53,648 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:08:53,649 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:08:53,650 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:08:53,650 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:08:53,651 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:08:53,651 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:08:53,660 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:08:53,661 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:08:53,749 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:08:53,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 145 treesize of output 123 [2023-02-16 03:08:53,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 13