./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e8d55036 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test23_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 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 22:09:43,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 22:09:43,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 22:09:43,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 22:09:43,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 22:09:43,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 22:09:43,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 22:09:43,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 22:09:43,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 22:09:43,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 22:09:43,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 22:09:43,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 22:09:43,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 22:09:43,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 22:09:43,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 22:09:43,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 22:09:43,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 22:09:43,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 22:09:43,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 22:09:43,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 22:09:43,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 22:09:43,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 22:09:43,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 22:09:43,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 22:09:43,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 22:09:43,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 22:09:43,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 22:09:43,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 22:09:43,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 22:09:43,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 22:09:43,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 22:09:43,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 22:09:43,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 22:09:43,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 22:09:43,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 22:09:43,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 22:09:43,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 22:09:43,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 22:09:43,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 22:09:43,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 22:09:43,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 22:09:43,407 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-15 22:09:43,428 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 22:09:43,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 22:09:43,429 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 22:09:43,429 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 22:09:43,429 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 22:09:43,430 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 22:09:43,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 22:09:43,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 22:09:43,430 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 22:09:43,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 22:09:43,431 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 22:09:43,431 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 22:09:43,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 22:09:43,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 22:09:43,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 22:09:43,432 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 22:09:43,432 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 22:09:43,432 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 22:09:43,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 22:09:43,432 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 22:09:43,433 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 22:09:43,433 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 22:09:43,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 22:09:43,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 22:09:43,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 22:09:43,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 22:09:43,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 22:09:43,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 22:09:43,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 22:09:43,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 22:09:43,434 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 22:09:43,434 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 22:09:43,435 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 22:09:43,435 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 22:09:43,435 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 [2023-02-15 22:09:43,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 22:09:43,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 22:09:43,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 22:09:43,653 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 22:09:43,653 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 22:09:43,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2023-02-15 22:09:44,734 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 22:09:44,933 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 22:09:44,933 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2023-02-15 22:09:44,945 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8de2b68c/2163f82989194dff9e91ec164872ff24/FLAGa2af67fd7 [2023-02-15 22:09:44,955 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8de2b68c/2163f82989194dff9e91ec164872ff24 [2023-02-15 22:09:44,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 22:09:44,957 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 22:09:44,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 22:09:44,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 22:09:44,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 22:09:44,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:09:44" (1/1) ... [2023-02-15 22:09:44,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@be74659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:09:44, skipping insertion in model container [2023-02-15 22:09:44,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:09:44" (1/1) ... [2023-02-15 22:09:44,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 22:09:45,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 22:09:45,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 22:09:45,312 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) [2023-02-15 22:09:45,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@47b16c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:09:45, skipping insertion in model container [2023-02-15 22:09:45,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 22:09:45,314 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-15 22:09:45,315 INFO L158 Benchmark]: Toolchain (without parser) took 357.08ms. Allocated memory is still 176.2MB. Free memory was 125.1MB in the beginning and 109.8MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-15 22:09:45,316 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 134.2MB. Free memory is still 77.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 22:09:45,317 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.56ms. Allocated memory is still 176.2MB. Free memory was 125.1MB in the beginning and 110.5MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-15 22:09:45,317 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 134.2MB. Free memory is still 77.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 355.56ms. Allocated memory is still 176.2MB. Free memory was 125.1MB in the beginning and 110.5MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test23_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 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 22:09:46,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 22:09:46,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 22:09:46,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 22:09:46,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 22:09:46,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 22:09:46,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 22:09:46,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 22:09:46,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 22:09:47,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 22:09:47,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 22:09:47,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 22:09:47,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 22:09:47,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 22:09:47,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 22:09:47,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 22:09:47,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 22:09:47,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 22:09:47,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 22:09:47,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 22:09:47,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 22:09:47,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 22:09:47,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 22:09:47,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 22:09:47,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 22:09:47,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 22:09:47,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 22:09:47,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 22:09:47,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 22:09:47,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 22:09:47,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 22:09:47,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 22:09:47,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 22:09:47,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 22:09:47,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 22:09:47,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 22:09:47,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 22:09:47,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 22:09:47,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 22:09:47,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 22:09:47,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 22:09:47,041 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-15 22:09:47,067 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 22:09:47,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 22:09:47,068 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 22:09:47,068 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 22:09:47,069 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 22:09:47,069 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 22:09:47,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 22:09:47,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 22:09:47,070 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 22:09:47,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 22:09:47,071 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 22:09:47,071 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 22:09:47,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 22:09:47,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 22:09:47,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 22:09:47,071 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 22:09:47,071 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 22:09:47,072 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 22:09:47,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 22:09:47,072 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 22:09:47,072 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-15 22:09:47,072 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-15 22:09:47,072 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 22:09:47,072 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 22:09:47,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 22:09:47,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 22:09:47,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 22:09:47,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 22:09:47,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 22:09:47,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 22:09:47,074 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-15 22:09:47,074 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-15 22:09:47,074 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 22:09:47,074 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 22:09:47,074 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 22:09:47,074 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-15 22:09:47,074 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 22:09:47,075 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 [2023-02-15 22:09:47,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 22:09:47,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 22:09:47,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 22:09:47,333 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 22:09:47,333 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 22:09:47,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2023-02-15 22:09:48,263 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 22:09:48,564 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 22:09:48,567 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2023-02-15 22:09:48,599 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21b629460/52e3c3483ace41519bfde18e9b5f61f5/FLAG963238d51 [2023-02-15 22:09:48,611 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21b629460/52e3c3483ace41519bfde18e9b5f61f5 [2023-02-15 22:09:48,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 22:09:48,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 22:09:48,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 22:09:48,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 22:09:48,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 22:09:48,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:09:48" (1/1) ... [2023-02-15 22:09:48,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa00664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:09:48, skipping insertion in model container [2023-02-15 22:09:48,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:09:48" (1/1) ... [2023-02-15 22:09:48,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 22:09:48,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 22:09:48,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 22:09:49,018 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-15 22:09:49,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 22:09:49,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 22:09:49,104 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 22:09:49,160 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 22:09:49,191 INFO L208 MainTranslator]: Completed translation [2023-02-15 22:09:49,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:09:49 WrapperNode [2023-02-15 22:09:49,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 22:09:49,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 22:09:49,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 22:09:49,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 22:09:49,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:09:49" (1/1) ... [2023-02-15 22:09:49,229 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:09:49" (1/1) ... [2023-02-15 22:09:49,249 INFO L138 Inliner]: procedures = 175, calls = 119, calls flagged for inlining = 30, calls inlined = 15, statements flattened = 198 [2023-02-15 22:09:49,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 22:09:49,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 22:09:49,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 22:09:49,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 22:09:49,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:09:49" (1/1) ... [2023-02-15 22:09:49,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:09:49" (1/1) ... [2023-02-15 22:09:49,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:09:49" (1/1) ... [2023-02-15 22:09:49,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:09:49" (1/1) ... [2023-02-15 22:09:49,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:09:49" (1/1) ... [2023-02-15 22:09:49,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:09:49" (1/1) ... [2023-02-15 22:09:49,308 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:09:49" (1/1) ... [2023-02-15 22:09:49,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:09:49" (1/1) ... [2023-02-15 22:09:49,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 22:09:49,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 22:09:49,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 22:09:49,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 22:09:49,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:09:49" (1/1) ... [2023-02-15 22:09:49,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 22:09:49,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:09:49,356 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) [2023-02-15 22:09:49,358 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 [2023-02-15 22:09:49,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-15 22:09:49,388 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-02-15 22:09:49,388 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-02-15 22:09:49,388 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-02-15 22:09:49,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-02-15 22:09:49,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-02-15 22:09:49,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-02-15 22:09:49,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 22:09:49,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 22:09:49,389 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2023-02-15 22:09:49,389 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2023-02-15 22:09:49,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 22:09:49,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-15 22:09:49,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-15 22:09:49,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-15 22:09:49,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 22:09:49,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-15 22:09:49,390 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2023-02-15 22:09:49,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2023-02-15 22:09:49,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-02-15 22:09:49,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-02-15 22:09:49,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 22:09:49,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 22:09:49,539 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 22:09:49,540 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 22:09:50,141 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 22:09:50,151 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 22:09:50,151 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 22:09:50,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:09:50 BoogieIcfgContainer [2023-02-15 22:09:50,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 22:09:50,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 22:09:50,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 22:09:50,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 22:09:50,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:09:48" (1/3) ... [2023-02-15 22:09:50,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4554ac4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:09:50, skipping insertion in model container [2023-02-15 22:09:50,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:09:49" (2/3) ... [2023-02-15 22:09:50,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4554ac4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:09:50, skipping insertion in model container [2023-02-15 22:09:50,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:09:50" (3/3) ... [2023-02-15 22:09:50,160 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test23_1.i [2023-02-15 22:09:50,187 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 22:09:50,195 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 79 error locations. [2023-02-15 22:09:50,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 22:09:50,263 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;@4f39f10e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 22:09:50,264 INFO L358 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2023-02-15 22:09:50,272 INFO L276 IsEmpty]: Start isEmpty. Operand has 205 states, 111 states have (on average 1.8468468468468469) internal successors, (205), 190 states have internal predecessors, (205), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-15 22:09:50,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 22:09:50,293 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:09:50,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:09:50,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:09:50,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:09:50,299 INFO L85 PathProgramCache]: Analyzing trace with hash 441980658, now seen corresponding path program 1 times [2023-02-15 22:09:50,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:09:50,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742024009] [2023-02-15 22:09:50,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:09:50,313 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 [2023-02-15 22:09:50,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:09:50,316 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) [2023-02-15 22:09:50,352 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 [2023-02-15 22:09:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:09:50,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 22:09:50,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:09:50,485 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 [2023-02-15 22:09:50,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:09:50,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:09:50,535 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:09:50,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742024009] [2023-02-15 22:09:50,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742024009] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:09:50,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:09:50,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 22:09:50,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447692329] [2023-02-15 22:09:50,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:09:50,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 22:09:50,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:09:50,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 22:09:50,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-15 22:09:50,573 INFO L87 Difference]: Start difference. First operand has 205 states, 111 states have (on average 1.8468468468468469) internal successors, (205), 190 states have internal predecessors, (205), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 22:09:51,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:09:51,112 INFO L93 Difference]: Finished difference Result 232 states and 249 transitions. [2023-02-15 22:09:51,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 22:09:51,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-02-15 22:09:51,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:09:51,121 INFO L225 Difference]: With dead ends: 232 [2023-02-15 22:09:51,121 INFO L226 Difference]: Without dead ends: 228 [2023-02-15 22:09:51,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-15 22:09:51,124 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 28 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 22:09:51,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 851 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 22:09:51,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-02-15 22:09:51,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 212. [2023-02-15 22:09:51,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 117 states have (on average 1.794871794871795) internal successors, (210), 195 states have internal predecessors, (210), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-02-15 22:09:51,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 229 transitions. [2023-02-15 22:09:51,157 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 229 transitions. Word has length 12 [2023-02-15 22:09:51,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:09:51,157 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 229 transitions. [2023-02-15 22:09:51,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 22:09:51,158 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 229 transitions. [2023-02-15 22:09:51,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 22:09:51,158 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:09:51,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:09:51,168 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 [2023-02-15 22:09:51,365 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 [2023-02-15 22:09:51,366 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:09:51,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:09:51,366 INFO L85 PathProgramCache]: Analyzing trace with hash 441980659, now seen corresponding path program 1 times [2023-02-15 22:09:51,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:09:51,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65526545] [2023-02-15 22:09:51,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:09:51,367 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 [2023-02-15 22:09:51,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:09:51,368 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) [2023-02-15 22:09:51,371 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 [2023-02-15 22:09:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:09:51,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 22:09:51,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:09:51,480 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 [2023-02-15 22:09:51,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:09:51,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:09:51,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:09:51,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65526545] [2023-02-15 22:09:51,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65526545] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:09:51,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:09:51,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 22:09:51,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735853561] [2023-02-15 22:09:51,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:09:51,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 22:09:51,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:09:51,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 22:09:51,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-02-15 22:09:51,567 INFO L87 Difference]: Start difference. First operand 212 states and 229 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 22:09:52,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:09:52,131 INFO L93 Difference]: Finished difference Result 237 states and 253 transitions. [2023-02-15 22:09:52,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 22:09:52,131 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-02-15 22:09:52,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:09:52,134 INFO L225 Difference]: With dead ends: 237 [2023-02-15 22:09:52,134 INFO L226 Difference]: Without dead ends: 237 [2023-02-15 22:09:52,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-02-15 22:09:52,135 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 35 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 22:09:52,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1102 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 22:09:52,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-02-15 22:09:52,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 212. [2023-02-15 22:09:52,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 117 states have (on average 1.7777777777777777) internal successors, (208), 195 states have internal predecessors, (208), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-02-15 22:09:52,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 227 transitions. [2023-02-15 22:09:52,143 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 227 transitions. Word has length 12 [2023-02-15 22:09:52,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:09:52,143 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 227 transitions. [2023-02-15 22:09:52,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 22:09:52,143 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 227 transitions. [2023-02-15 22:09:52,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 22:09:52,144 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:09:52,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:09:52,152 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 [2023-02-15 22:09:52,351 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 [2023-02-15 22:09:52,351 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:09:52,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:09:52,352 INFO L85 PathProgramCache]: Analyzing trace with hash -2110176303, now seen corresponding path program 1 times [2023-02-15 22:09:52,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:09:52,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706645893] [2023-02-15 22:09:52,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:09:52,352 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 [2023-02-15 22:09:52,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:09:52,358 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) [2023-02-15 22:09:52,360 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 [2023-02-15 22:09:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:09:52,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 22:09:52,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:09:52,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:09:52,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:09:52,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:09:52,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706645893] [2023-02-15 22:09:52,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706645893] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:09:52,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:09:52,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 22:09:52,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737594352] [2023-02-15 22:09:52,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:09:52,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 22:09:52,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:09:52,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 22:09:52,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:09:52,491 INFO L87 Difference]: Start difference. First operand 212 states and 227 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 22:09:52,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:09:52,515 INFO L93 Difference]: Finished difference Result 224 states and 239 transitions. [2023-02-15 22:09:52,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 22:09:52,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-02-15 22:09:52,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:09:52,516 INFO L225 Difference]: With dead ends: 224 [2023-02-15 22:09:52,516 INFO L226 Difference]: Without dead ends: 224 [2023-02-15 22:09:52,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:09:52,517 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 20 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:09:52,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 844 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:09:52,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-02-15 22:09:52,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 203. [2023-02-15 22:09:52,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 113 states have (on average 1.7699115044247788) internal successors, (200), 187 states have internal predecessors, (200), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-02-15 22:09:52,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 217 transitions. [2023-02-15 22:09:52,525 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 217 transitions. Word has length 12 [2023-02-15 22:09:52,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:09:52,525 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 217 transitions. [2023-02-15 22:09:52,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 22:09:52,525 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 217 transitions. [2023-02-15 22:09:52,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 22:09:52,526 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:09:52,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:09:52,539 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 [2023-02-15 22:09:52,733 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 [2023-02-15 22:09:52,733 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:09:52,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:09:52,734 INFO L85 PathProgramCache]: Analyzing trace with hash 441895411, now seen corresponding path program 1 times [2023-02-15 22:09:52,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:09:52,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399006880] [2023-02-15 22:09:52,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:09:52,739 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 [2023-02-15 22:09:52,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:09:52,746 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) [2023-02-15 22:09:52,748 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 [2023-02-15 22:09:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:09:52,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 22:09:52,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:09:52,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:09:52,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:09:52,814 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:09:52,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399006880] [2023-02-15 22:09:52,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399006880] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:09:52,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:09:52,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 22:09:52,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187436398] [2023-02-15 22:09:52,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:09:52,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 22:09:52,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:09:52,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 22:09:52,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:09:52,816 INFO L87 Difference]: Start difference. First operand 203 states and 217 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 22:09:52,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:09:52,840 INFO L93 Difference]: Finished difference Result 224 states and 238 transitions. [2023-02-15 22:09:52,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 22:09:52,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-02-15 22:09:52,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:09:52,841 INFO L225 Difference]: With dead ends: 224 [2023-02-15 22:09:52,841 INFO L226 Difference]: Without dead ends: 224 [2023-02-15 22:09:52,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:09:52,843 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 129 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:09:52,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 774 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:09:52,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-02-15 22:09:52,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 203. [2023-02-15 22:09:52,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 113 states have (on average 1.761061946902655) internal successors, (199), 187 states have internal predecessors, (199), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-02-15 22:09:52,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 216 transitions. [2023-02-15 22:09:52,865 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 216 transitions. Word has length 12 [2023-02-15 22:09:52,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:09:52,865 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 216 transitions. [2023-02-15 22:09:52,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 22:09:52,867 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 216 transitions. [2023-02-15 22:09:52,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 22:09:52,868 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:09:52,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:09:52,893 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 [2023-02-15 22:09:53,074 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 [2023-02-15 22:09:53,075 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:09:53,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:09:53,075 INFO L85 PathProgramCache]: Analyzing trace with hash -2110261550, now seen corresponding path program 1 times [2023-02-15 22:09:53,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:09:53,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895712497] [2023-02-15 22:09:53,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:09:53,076 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 [2023-02-15 22:09:53,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:09:53,077 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) [2023-02-15 22:09:53,079 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 [2023-02-15 22:09:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:09:53,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 22:09:53,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:09:53,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:09:53,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:09:53,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:09:53,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895712497] [2023-02-15 22:09:53,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895712497] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:09:53,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:09:53,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 22:09:53,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629902785] [2023-02-15 22:09:53,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:09:53,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 22:09:53,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:09:53,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 22:09:53,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:09:53,152 INFO L87 Difference]: Start difference. First operand 203 states and 216 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 22:09:53,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:09:53,177 INFO L93 Difference]: Finished difference Result 208 states and 220 transitions. [2023-02-15 22:09:53,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 22:09:53,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-02-15 22:09:53,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:09:53,180 INFO L225 Difference]: With dead ends: 208 [2023-02-15 22:09:53,180 INFO L226 Difference]: Without dead ends: 208 [2023-02-15 22:09:53,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-15 22:09:53,181 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 112 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:09:53,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 726 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:09:53,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-02-15 22:09:53,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 205. [2023-02-15 22:09:53,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 115 states have (on average 1.7478260869565216) internal successors, (201), 189 states have internal predecessors, (201), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-02-15 22:09:53,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 218 transitions. [2023-02-15 22:09:53,184 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 218 transitions. Word has length 12 [2023-02-15 22:09:53,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:09:53,185 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 218 transitions. [2023-02-15 22:09:53,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 22:09:53,185 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 218 transitions. [2023-02-15 22:09:53,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-15 22:09:53,185 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:09:53,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:09:53,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-02-15 22:09:53,392 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 [2023-02-15 22:09:53,393 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:09:53,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:09:53,394 INFO L85 PathProgramCache]: Analyzing trace with hash -993578524, now seen corresponding path program 1 times [2023-02-15 22:09:53,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:09:53,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178229103] [2023-02-15 22:09:53,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:09:53,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:09:53,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:09:53,396 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) [2023-02-15 22:09:53,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-15 22:09:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:09:53,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 22:09:53,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:09:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:09:53,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:09:53,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:09:53,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178229103] [2023-02-15 22:09:53,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178229103] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:09:53,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:09:53,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 22:09:53,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797422459] [2023-02-15 22:09:53,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:09:53,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 22:09:53,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:09:53,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 22:09:53,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 22:09:53,494 INFO L87 Difference]: Start difference. First operand 205 states and 218 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 22:09:53,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:09:53,917 INFO L93 Difference]: Finished difference Result 217 states and 232 transitions. [2023-02-15 22:09:53,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 22:09:53,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-02-15 22:09:53,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:09:53,919 INFO L225 Difference]: With dead ends: 217 [2023-02-15 22:09:53,919 INFO L226 Difference]: Without dead ends: 209 [2023-02-15 22:09:53,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 22:09:53,919 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 51 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 22:09:53,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 386 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 22:09:53,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-02-15 22:09:53,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 199. [2023-02-15 22:09:53,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 110 states have (on average 1.7727272727272727) internal successors, (195), 184 states have internal predecessors, (195), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-15 22:09:53,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 211 transitions. [2023-02-15 22:09:53,923 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 211 transitions. Word has length 13 [2023-02-15 22:09:53,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:09:53,923 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 211 transitions. [2023-02-15 22:09:53,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 22:09:53,923 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 211 transitions. [2023-02-15 22:09:53,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 22:09:53,923 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:09:53,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:09:53,932 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 [2023-02-15 22:09:54,124 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 [2023-02-15 22:09:54,124 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:09:54,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:09:54,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1907571031, now seen corresponding path program 1 times [2023-02-15 22:09:54,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:09:54,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717826251] [2023-02-15 22:09:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:09:54,125 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 [2023-02-15 22:09:54,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:09:54,126 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) [2023-02-15 22:09:54,136 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 [2023-02-15 22:09:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:09:54,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 22:09:54,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:09:54,275 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_23 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_23))))) is different from true [2023-02-15 22:09:54,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:09:54,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-15 22:09:54,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:09:54,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:09:54,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:09:54,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717826251] [2023-02-15 22:09:54,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717826251] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:09:54,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:09:54,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 22:09:54,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342809822] [2023-02-15 22:09:54,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:09:54,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 22:09:54,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:09:54,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 22:09:54,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2023-02-15 22:09:54,358 INFO L87 Difference]: Start difference. First operand 199 states and 211 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 22:09:55,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:09:55,016 INFO L93 Difference]: Finished difference Result 250 states and 265 transitions. [2023-02-15 22:09:55,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 22:09:55,018 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-02-15 22:09:55,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:09:55,019 INFO L225 Difference]: With dead ends: 250 [2023-02-15 22:09:55,019 INFO L226 Difference]: Without dead ends: 250 [2023-02-15 22:09:55,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=76, Unknown=1, NotChecked=18, Total=132 [2023-02-15 22:09:55,019 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 539 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 22:09:55,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 215 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 533 Invalid, 0 Unknown, 263 Unchecked, 0.6s Time] [2023-02-15 22:09:55,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-02-15 22:09:55,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 208. [2023-02-15 22:09:55,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 119 states have (on average 1.7478991596638656) internal successors, (208), 192 states have internal predecessors, (208), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-02-15 22:09:55,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 226 transitions. [2023-02-15 22:09:55,023 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 226 transitions. Word has length 16 [2023-02-15 22:09:55,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:09:55,023 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 226 transitions. [2023-02-15 22:09:55,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 22:09:55,023 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 226 transitions. [2023-02-15 22:09:55,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 22:09:55,024 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:09:55,024 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] [2023-02-15 22:09:55,053 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 [2023-02-15 22:09:55,232 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 [2023-02-15 22:09:55,233 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:09:55,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:09:55,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1544157348, now seen corresponding path program 1 times [2023-02-15 22:09:55,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:09:55,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369179319] [2023-02-15 22:09:55,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:09:55,236 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 [2023-02-15 22:09:55,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:09:55,237 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) [2023-02-15 22:09:55,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-15 22:09:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:09:55,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 22:09:55,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:09:55,325 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 [2023-02-15 22:09:55,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:09:55,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:09:55,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:09:55,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369179319] [2023-02-15 22:09:55,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369179319] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:09:55,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:09:55,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 22:09:55,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53620276] [2023-02-15 22:09:55,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:09:55,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 22:09:55,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:09:55,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 22:09:55,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 22:09:55,350 INFO L87 Difference]: Start difference. First operand 208 states and 226 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 22:09:55,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:09:55,737 INFO L93 Difference]: Finished difference Result 264 states and 290 transitions. [2023-02-15 22:09:55,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 22:09:55,737 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-02-15 22:09:55,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:09:55,739 INFO L225 Difference]: With dead ends: 264 [2023-02-15 22:09:55,739 INFO L226 Difference]: Without dead ends: 264 [2023-02-15 22:09:55,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-15 22:09:55,739 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 71 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 22:09:55,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 653 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 22:09:55,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-02-15 22:09:55,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 236. [2023-02-15 22:09:55,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 149 states have (on average 1.7718120805369129) internal successors, (264), 220 states have internal predecessors, (264), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-02-15 22:09:55,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 282 transitions. [2023-02-15 22:09:55,744 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 282 transitions. Word has length 25 [2023-02-15 22:09:55,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:09:55,745 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 282 transitions. [2023-02-15 22:09:55,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 22:09:55,745 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 282 transitions. [2023-02-15 22:09:55,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 22:09:55,745 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:09:55,746 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] [2023-02-15 22:09:55,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-02-15 22:09:55,953 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 [2023-02-15 22:09:55,954 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:09:55,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:09:55,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1544157349, now seen corresponding path program 1 times [2023-02-15 22:09:55,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:09:55,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571411548] [2023-02-15 22:09:55,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:09:55,954 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 [2023-02-15 22:09:55,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:09:55,956 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) [2023-02-15 22:09:55,958 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 [2023-02-15 22:09:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:09:56,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 22:09:56,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:09:56,092 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 [2023-02-15 22:09:56,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:09:56,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:09:56,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:09:56,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571411548] [2023-02-15 22:09:56,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571411548] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:09:56,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:09:56,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 22:09:56,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753820119] [2023-02-15 22:09:56,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:09:56,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 22:09:56,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:09:56,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 22:09:56,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 22:09:56,169 INFO L87 Difference]: Start difference. First operand 236 states and 282 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 22:09:56,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:09:56,690 INFO L93 Difference]: Finished difference Result 296 states and 325 transitions. [2023-02-15 22:09:56,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 22:09:56,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-02-15 22:09:56,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:09:56,691 INFO L225 Difference]: With dead ends: 296 [2023-02-15 22:09:56,692 INFO L226 Difference]: Without dead ends: 296 [2023-02-15 22:09:56,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-15 22:09:56,692 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 105 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 22:09:56,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 651 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 22:09:56,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-02-15 22:09:56,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 238. [2023-02-15 22:09:56,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 152 states have (on average 1.75) internal successors, (266), 221 states have internal predecessors, (266), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-02-15 22:09:56,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 287 transitions. [2023-02-15 22:09:56,697 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 287 transitions. Word has length 25 [2023-02-15 22:09:56,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:09:56,697 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 287 transitions. [2023-02-15 22:09:56,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 22:09:56,697 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 287 transitions. [2023-02-15 22:09:56,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-15 22:09:56,698 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:09:56,698 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] [2023-02-15 22:09:56,705 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 [2023-02-15 22:09:56,906 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 [2023-02-15 22:09:56,907 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:09:56,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:09:56,910 INFO L85 PathProgramCache]: Analyzing trace with hash -2123399988, now seen corresponding path program 1 times [2023-02-15 22:09:56,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:09:56,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266744245] [2023-02-15 22:09:56,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:09:56,915 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 [2023-02-15 22:09:56,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:09:56,916 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) [2023-02-15 22:09:56,956 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 [2023-02-15 22:09:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:09:57,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 22:09:57,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:09:57,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:09:57,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:09:57,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:09:57,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266744245] [2023-02-15 22:09:57,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [266744245] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:09:57,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:09:57,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 22:09:57,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988752752] [2023-02-15 22:09:57,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:09:57,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 22:09:57,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:09:57,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 22:09:57,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 22:09:57,064 INFO L87 Difference]: Start difference. First operand 238 states and 287 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 22:09:57,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:09:57,138 INFO L93 Difference]: Finished difference Result 238 states and 286 transitions. [2023-02-15 22:09:57,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 22:09:57,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2023-02-15 22:09:57,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:09:57,139 INFO L225 Difference]: With dead ends: 238 [2023-02-15 22:09:57,139 INFO L226 Difference]: Without dead ends: 238 [2023-02-15 22:09:57,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-15 22:09:57,140 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 120 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 832 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 [2023-02-15 22:09:57,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 832 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:09:57,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-02-15 22:09:57,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-02-15 22:09:57,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 152 states have (on average 1.743421052631579) internal successors, (265), 221 states have internal predecessors, (265), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-02-15 22:09:57,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 286 transitions. [2023-02-15 22:09:57,144 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 286 transitions. Word has length 27 [2023-02-15 22:09:57,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:09:57,144 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 286 transitions. [2023-02-15 22:09:57,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 22:09:57,145 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 286 transitions. [2023-02-15 22:09:57,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 22:09:57,145 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:09:57,145 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, 1, 1, 1, 1, 1] [2023-02-15 22:09:57,165 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 [2023-02-15 22:09:57,352 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 [2023-02-15 22:09:57,353 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:09:57,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:09:57,353 INFO L85 PathProgramCache]: Analyzing trace with hash -308565232, now seen corresponding path program 1 times [2023-02-15 22:09:57,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:09:57,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850245743] [2023-02-15 22:09:57,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:09:57,354 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 [2023-02-15 22:09:57,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:09:57,355 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) [2023-02-15 22:09:57,357 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 [2023-02-15 22:09:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:09:57,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 22:09:57,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:09:57,501 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 [2023-02-15 22:09:57,539 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-02-15 22:09:57,539 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 14 treesize of output 20 [2023-02-15 22:09:57,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:09:57,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:09:57,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:09:57,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850245743] [2023-02-15 22:09:57,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850245743] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:09:57,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:09:57,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 22:09:57,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598992721] [2023-02-15 22:09:57,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:09:57,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 22:09:57,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:09:57,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 22:09:57,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-02-15 22:09:57,604 INFO L87 Difference]: Start difference. First operand 238 states and 286 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 22:09:58,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:09:58,177 INFO L93 Difference]: Finished difference Result 250 states and 294 transitions. [2023-02-15 22:09:58,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 22:09:58,178 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2023-02-15 22:09:58,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:09:58,179 INFO L225 Difference]: With dead ends: 250 [2023-02-15 22:09:58,179 INFO L226 Difference]: Without dead ends: 250 [2023-02-15 22:09:58,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-15 22:09:58,180 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 201 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 22:09:58,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 580 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 22:09:58,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-02-15 22:09:58,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 233. [2023-02-15 22:09:58,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 152 states have (on average 1.6776315789473684) internal successors, (255), 216 states have internal predecessors, (255), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-02-15 22:09:58,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 276 transitions. [2023-02-15 22:09:58,184 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 276 transitions. Word has length 33 [2023-02-15 22:09:58,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:09:58,185 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 276 transitions. [2023-02-15 22:09:58,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 22:09:58,185 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 276 transitions. [2023-02-15 22:09:58,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 22:09:58,185 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:09:58,186 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, 1, 1, 1, 1, 1] [2023-02-15 22:09:58,194 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 (12)] Forceful destruction successful, exit code 0 [2023-02-15 22:09:58,386 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 [2023-02-15 22:09:58,386 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:09:58,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:09:58,387 INFO L85 PathProgramCache]: Analyzing trace with hash -308565231, now seen corresponding path program 1 times [2023-02-15 22:09:58,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:09:58,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880795653] [2023-02-15 22:09:58,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:09:58,387 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 [2023-02-15 22:09:58,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:09:58,388 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) [2023-02-15 22:09:58,389 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 [2023-02-15 22:09:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:09:58,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-15 22:09:58,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:09:58,565 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 [2023-02-15 22:09:58,584 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 [2023-02-15 22:09:58,616 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|)) (exists ((v_ArrVal_198 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| v_ArrVal_198))))) is different from true [2023-02-15 22:09:58,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:09:58,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-15 22:09:58,643 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-02-15 22:09:58,644 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 [2023-02-15 22:09:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:09:58,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:09:58,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:09:58,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880795653] [2023-02-15 22:09:58,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880795653] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:09:58,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:09:58,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 22:09:58,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583901484] [2023-02-15 22:09:58,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:09:58,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 22:09:58,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:09:58,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 22:09:58,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2023-02-15 22:09:58,689 INFO L87 Difference]: Start difference. First operand 233 states and 276 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 22:09:59,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:09:59,269 INFO L93 Difference]: Finished difference Result 310 states and 341 transitions. [2023-02-15 22:09:59,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 22:09:59,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2023-02-15 22:09:59,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:09:59,271 INFO L225 Difference]: With dead ends: 310 [2023-02-15 22:09:59,271 INFO L226 Difference]: Without dead ends: 310 [2023-02-15 22:09:59,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=37, Unknown=1, NotChecked=12, Total=72 [2023-02-15 22:09:59,272 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 254 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 246 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 22:09:59,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 394 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 403 Invalid, 0 Unknown, 246 Unchecked, 0.5s Time] [2023-02-15 22:09:59,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-02-15 22:09:59,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 233. [2023-02-15 22:09:59,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 152 states have (on average 1.644736842105263) internal successors, (250), 216 states have internal predecessors, (250), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-02-15 22:09:59,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 271 transitions. [2023-02-15 22:09:59,291 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 271 transitions. Word has length 33 [2023-02-15 22:09:59,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:09:59,293 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 271 transitions. [2023-02-15 22:09:59,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 22:09:59,293 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 271 transitions. [2023-02-15 22:09:59,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-15 22:09:59,294 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:09:59,295 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:09:59,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-02-15 22:09:59,495 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 [2023-02-15 22:09:59,495 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:09:59,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:09:59,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1238063083, now seen corresponding path program 1 times [2023-02-15 22:09:59,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:09:59,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198295989] [2023-02-15 22:09:59,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:09:59,496 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 [2023-02-15 22:09:59,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:09:59,497 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) [2023-02-15 22:09:59,499 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 [2023-02-15 22:09:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:09:59,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 22:09:59,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:09:59,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:09:59,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:09:59,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:09:59,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198295989] [2023-02-15 22:09:59,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198295989] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:09:59,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:09:59,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 22:09:59,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823864782] [2023-02-15 22:09:59,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:09:59,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 22:09:59,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:09:59,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 22:09:59,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-15 22:09:59,942 INFO L87 Difference]: Start difference. First operand 233 states and 271 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 22:10:00,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:10:00,249 INFO L93 Difference]: Finished difference Result 231 states and 268 transitions. [2023-02-15 22:10:00,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 22:10:00,250 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2023-02-15 22:10:00,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:10:00,251 INFO L225 Difference]: With dead ends: 231 [2023-02-15 22:10:00,251 INFO L226 Difference]: Without dead ends: 231 [2023-02-15 22:10:00,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-02-15 22:10:00,252 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 410 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 22:10:00,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 707 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 22:10:00,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-02-15 22:10:00,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2023-02-15 22:10:00,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 152 states have (on average 1.625) internal successors, (247), 214 states have internal predecessors, (247), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-02-15 22:10:00,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 268 transitions. [2023-02-15 22:10:00,256 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 268 transitions. Word has length 36 [2023-02-15 22:10:00,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:10:00,256 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 268 transitions. [2023-02-15 22:10:00,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 22:10:00,256 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 268 transitions. [2023-02-15 22:10:00,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-15 22:10:00,257 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:10:00,257 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:10:00,268 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 (14)] Ended with exit code 0 [2023-02-15 22:10:00,457 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 [2023-02-15 22:10:00,458 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONARRAY_INDEX === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:10:00,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:10:00,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1238063271, now seen corresponding path program 1 times [2023-02-15 22:10:00,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:10:00,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659497476] [2023-02-15 22:10:00,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:10:00,458 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 [2023-02-15 22:10:00,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:10:00,460 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) [2023-02-15 22:10:00,474 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 [2023-02-15 22:10:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:10:00,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 22:10:00,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:10:00,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:10:00,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:10:00,581 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:10:00,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659497476] [2023-02-15 22:10:00,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659497476] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:10:00,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:10:00,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 22:10:00,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600982766] [2023-02-15 22:10:00,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:10:00,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 22:10:00,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:10:00,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 22:10:00,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 22:10:00,582 INFO L87 Difference]: Start difference. First operand 231 states and 268 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 22:10:00,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:10:00,599 INFO L93 Difference]: Finished difference Result 272 states and 312 transitions. [2023-02-15 22:10:00,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 22:10:00,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2023-02-15 22:10:00,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:10:00,601 INFO L225 Difference]: With dead ends: 272 [2023-02-15 22:10:00,601 INFO L226 Difference]: Without dead ends: 272 [2023-02-15 22:10:00,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:10:00,601 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 36 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:10:00,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 583 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:10:00,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-02-15 22:10:00,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 235. [2023-02-15 22:10:00,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 156 states have (on average 1.608974358974359) internal successors, (251), 218 states have internal predecessors, (251), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-02-15 22:10:00,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 272 transitions. [2023-02-15 22:10:00,611 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 272 transitions. Word has length 36 [2023-02-15 22:10:00,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:10:00,611 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 272 transitions. [2023-02-15 22:10:00,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 22:10:00,611 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 272 transitions. [2023-02-15 22:10:00,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-15 22:10:00,613 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:10:00,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:10:00,623 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 (15)] Ended with exit code 0 [2023-02-15 22:10:00,821 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 [2023-02-15 22:10:00,821 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:10:00,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:10:00,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1119933624, now seen corresponding path program 1 times [2023-02-15 22:10:00,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:10:00,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125637980] [2023-02-15 22:10:00,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:10:00,822 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 [2023-02-15 22:10:00,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:10:00,823 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) [2023-02-15 22:10:00,825 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 [2023-02-15 22:10:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:10:00,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 22:10:00,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:10:00,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:10:00,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:10:00,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:10:00,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125637980] [2023-02-15 22:10:00,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125637980] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:10:00,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:10:00,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 22:10:00,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942072290] [2023-02-15 22:10:00,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:10:00,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 22:10:00,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:10:00,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 22:10:00,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 22:10:00,932 INFO L87 Difference]: Start difference. First operand 235 states and 272 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 22:10:00,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:10:00,949 INFO L93 Difference]: Finished difference Result 258 states and 297 transitions. [2023-02-15 22:10:00,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 22:10:00,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2023-02-15 22:10:00,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:10:00,950 INFO L225 Difference]: With dead ends: 258 [2023-02-15 22:10:00,950 INFO L226 Difference]: Without dead ends: 258 [2023-02-15 22:10:00,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:10:00,950 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 43 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:10:00,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 581 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:10:00,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-02-15 22:10:00,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 237. [2023-02-15 22:10:00,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 158 states have (on average 1.6012658227848102) internal successors, (253), 220 states have internal predecessors, (253), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-02-15 22:10:00,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 274 transitions. [2023-02-15 22:10:00,954 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 274 transitions. Word has length 40 [2023-02-15 22:10:00,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:10:00,954 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 274 transitions. [2023-02-15 22:10:00,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 22:10:00,954 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 274 transitions. [2023-02-15 22:10:00,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-15 22:10:00,955 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:10:00,955 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:10:00,978 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 [2023-02-15 22:10:01,162 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 [2023-02-15 22:10:01,163 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:10:01,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:10:01,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1780653040, now seen corresponding path program 1 times [2023-02-15 22:10:01,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:10:01,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963662785] [2023-02-15 22:10:01,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:10:01,163 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 [2023-02-15 22:10:01,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:10:01,164 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) [2023-02-15 22:10:01,165 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 [2023-02-15 22:10:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:10:01,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 36 conjunts are in the unsatisfiable core [2023-02-15 22:10:01,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:10:01,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:10:01,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-15 22:10:01,423 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-02-15 22:10:01,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-02-15 22:10:01,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:10:01,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-15 22:10:01,805 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 22:10:01,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-02-15 22:10:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:10:01,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:10:01,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:10:01,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963662785] [2023-02-15 22:10:01,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963662785] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:10:01,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:10:01,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-15 22:10:01,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861119099] [2023-02-15 22:10:01,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:10:01,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 22:10:01,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:10:01,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 22:10:01,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=106, Unknown=1, NotChecked=0, Total=132 [2023-02-15 22:10:01,990 INFO L87 Difference]: Start difference. First operand 237 states and 274 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:10:04,668 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] [2023-02-15 22:10:06,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:10:08,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:10:10,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:10:12,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:10:15,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:10:17,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:10:19,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:10:22,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:10:24,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:10:26,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:10:28,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:10:30,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:10:32,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:10:35,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:10:35,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:10:35,188 INFO L93 Difference]: Finished difference Result 281 states and 314 transitions. [2023-02-15 22:10:35,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 22:10:35,189 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2023-02-15 22:10:35,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:10:35,189 INFO L225 Difference]: With dead ends: 281 [2023-02-15 22:10:35,190 INFO L226 Difference]: Without dead ends: 281 [2023-02-15 22:10:35,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=362, Unknown=2, NotChecked=0, Total=462 [2023-02-15 22:10:35,190 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 458 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 62 mSolverCounterUnsat, 58 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 58 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.8s IncrementalHoareTripleChecker+Time [2023-02-15 22:10:35,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 447 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1104 Invalid, 58 Unknown, 0 Unchecked, 32.8s Time] [2023-02-15 22:10:35,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-02-15 22:10:35,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 235. [2023-02-15 22:10:35,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 158 states have (on average 1.5886075949367089) internal successors, (251), 218 states have internal predecessors, (251), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-02-15 22:10:35,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 272 transitions. [2023-02-15 22:10:35,194 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 272 transitions. Word has length 42 [2023-02-15 22:10:35,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:10:35,195 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 272 transitions. [2023-02-15 22:10:35,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:10:35,195 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 272 transitions. [2023-02-15 22:10:35,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-15 22:10:35,195 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:10:35,195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:10:35,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-02-15 22:10:35,408 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 [2023-02-15 22:10:35,409 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:10:35,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:10:35,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1780653039, now seen corresponding path program 1 times [2023-02-15 22:10:35,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:10:35,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645988935] [2023-02-15 22:10:35,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:10:35,410 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 [2023-02-15 22:10:35,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:10:35,411 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) [2023-02-15 22:10:35,413 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 [2023-02-15 22:10:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:10:35,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-15 22:10:35,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:10:35,637 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-02-15 22:10:35,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-02-15 22:10:35,848 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2023-02-15 22:10:35,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 40 [2023-02-15 22:10:35,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-02-15 22:10:36,049 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-02-15 22:10:36,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-02-15 22:10:36,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:10:36,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:10:36,516 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-02-15 22:10:36,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 43 [2023-02-15 22:10:36,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:10:36,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:10:36,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:10:36,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645988935] [2023-02-15 22:10:36,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645988935] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:10:36,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:10:36,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-02-15 22:10:36,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203835660] [2023-02-15 22:10:36,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:10:36,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 22:10:36,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:10:36,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 22:10:36,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-02-15 22:10:36,589 INFO L87 Difference]: Start difference. First operand 235 states and 272 transitions. Second operand has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:10:39,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:10:39,109 INFO L93 Difference]: Finished difference Result 302 states and 342 transitions. [2023-02-15 22:10:39,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 22:10:39,109 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2023-02-15 22:10:39,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:10:39,110 INFO L225 Difference]: With dead ends: 302 [2023-02-15 22:10:39,110 INFO L226 Difference]: Without dead ends: 302 [2023-02-15 22:10:39,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2023-02-15 22:10:39,111 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 856 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 94 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:10:39,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 789 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 997 Invalid, 3 Unknown, 0 Unchecked, 2.1s Time] [2023-02-15 22:10:39,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-02-15 22:10:39,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 257. [2023-02-15 22:10:39,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 178 states have (on average 1.5730337078651686) internal successors, (280), 236 states have internal predecessors, (280), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2023-02-15 22:10:39,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 304 transitions. [2023-02-15 22:10:39,120 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 304 transitions. Word has length 42 [2023-02-15 22:10:39,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:10:39,120 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 304 transitions. [2023-02-15 22:10:39,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:10:39,120 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 304 transitions. [2023-02-15 22:10:39,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-15 22:10:39,120 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:10:39,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:10:39,133 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 [2023-02-15 22:10:39,329 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 [2023-02-15 22:10:39,330 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONARRAY_INDEX === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:10:39,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:10:39,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1855865600, now seen corresponding path program 1 times [2023-02-15 22:10:39,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:10:39,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805103071] [2023-02-15 22:10:39,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:10:39,330 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 [2023-02-15 22:10:39,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:10:39,341 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) [2023-02-15 22:10:39,344 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 [2023-02-15 22:10:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:10:39,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 22:10:39,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:10:39,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:10:39,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:10:39,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:10:39,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 36 [2023-02-15 22:10:39,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 50 [2023-02-15 22:10:39,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 50 [2023-02-15 22:10:39,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 39 treesize of output 50 [2023-02-15 22:10:39,709 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:10:39,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 42 treesize of output 14 [2023-02-15 22:10:39,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:10:39,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:10:39,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:10:39,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805103071] [2023-02-15 22:10:39,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805103071] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:10:39,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:10:39,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 22:10:39,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854706287] [2023-02-15 22:10:39,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:10:39,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 22:10:39,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:10:39,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 22:10:39,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 22:10:39,744 INFO L87 Difference]: Start difference. First operand 257 states and 304 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 22:10:40,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:10:40,153 INFO L93 Difference]: Finished difference Result 283 states and 334 transitions. [2023-02-15 22:10:40,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 22:10:40,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2023-02-15 22:10:40,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:10:40,154 INFO L225 Difference]: With dead ends: 283 [2023-02-15 22:10:40,155 INFO L226 Difference]: Without dead ends: 283 [2023-02-15 22:10:40,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-15 22:10:40,155 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 205 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 22:10:40,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 589 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 22:10:40,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-02-15 22:10:40,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 256. [2023-02-15 22:10:40,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 178 states have (on average 1.5617977528089888) internal successors, (278), 235 states have internal predecessors, (278), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2023-02-15 22:10:40,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 302 transitions. [2023-02-15 22:10:40,159 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 302 transitions. Word has length 43 [2023-02-15 22:10:40,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:10:40,159 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 302 transitions. [2023-02-15 22:10:40,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 22:10:40,160 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 302 transitions. [2023-02-15 22:10:40,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-15 22:10:40,160 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:10:40,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:10:40,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-02-15 22:10:40,360 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 [2023-02-15 22:10:40,360 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:10:40,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:10:40,361 INFO L85 PathProgramCache]: Analyzing trace with hash -634310522, now seen corresponding path program 1 times [2023-02-15 22:10:40,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:10:40,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216444261] [2023-02-15 22:10:40,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:10:40,361 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 [2023-02-15 22:10:40,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:10:40,362 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) [2023-02-15 22:10:40,365 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 [2023-02-15 22:10:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:10:40,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 22:10:40,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:10:40,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:10:40,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:10:40,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:10:40,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216444261] [2023-02-15 22:10:40,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216444261] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:10:40,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:10:40,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 22:10:40,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983731222] [2023-02-15 22:10:40,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:10:40,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 22:10:40,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:10:40,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 22:10:40,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 22:10:40,490 INFO L87 Difference]: Start difference. First operand 256 states and 302 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 22:10:40,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:10:40,507 INFO L93 Difference]: Finished difference Result 278 states and 323 transitions. [2023-02-15 22:10:40,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 22:10:40,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2023-02-15 22:10:40,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:10:40,508 INFO L225 Difference]: With dead ends: 278 [2023-02-15 22:10:40,508 INFO L226 Difference]: Without dead ends: 278 [2023-02-15 22:10:40,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:10:40,509 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 47 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:10:40,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 562 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:10:40,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-02-15 22:10:40,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 258. [2023-02-15 22:10:40,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 180 states have (on average 1.55) internal successors, (279), 237 states have internal predecessors, (279), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2023-02-15 22:10:40,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 303 transitions. [2023-02-15 22:10:40,514 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 303 transitions. Word has length 43 [2023-02-15 22:10:40,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:10:40,514 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 303 transitions. [2023-02-15 22:10:40,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 22:10:40,514 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 303 transitions. [2023-02-15 22:10:40,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-15 22:10:40,515 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:10:40,515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:10:40,525 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 [2023-02-15 22:10:40,725 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 [2023-02-15 22:10:40,725 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:10:40,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:10:40,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1697258563, now seen corresponding path program 1 times [2023-02-15 22:10:40,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:10:40,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460086544] [2023-02-15 22:10:40,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:10:40,726 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 [2023-02-15 22:10:40,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:10:40,728 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) [2023-02-15 22:10:40,729 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 [2023-02-15 22:10:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:10:40,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 22:10:40,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:10:40,916 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 [2023-02-15 22:10:40,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:10:40,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:10:40,969 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:10:40,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460086544] [2023-02-15 22:10:40,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460086544] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:10:40,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:10:40,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 22:10:40,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631827837] [2023-02-15 22:10:40,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:10:40,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 22:10:40,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:10:40,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 22:10:40,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-15 22:10:40,970 INFO L87 Difference]: Start difference. First operand 258 states and 303 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 22:10:41,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:10:41,594 INFO L93 Difference]: Finished difference Result 319 states and 360 transitions. [2023-02-15 22:10:41,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 22:10:41,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2023-02-15 22:10:41,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:10:41,595 INFO L225 Difference]: With dead ends: 319 [2023-02-15 22:10:41,595 INFO L226 Difference]: Without dead ends: 319 [2023-02-15 22:10:41,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-15 22:10:41,596 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 129 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 22:10:41,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 822 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-15 22:10:41,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-02-15 22:10:41,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 257. [2023-02-15 22:10:41,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 180 states have (on average 1.5333333333333334) internal successors, (276), 236 states have internal predecessors, (276), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2023-02-15 22:10:41,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 300 transitions. [2023-02-15 22:10:41,600 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 300 transitions. Word has length 44 [2023-02-15 22:10:41,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:10:41,600 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 300 transitions. [2023-02-15 22:10:41,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 22:10:41,600 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 300 transitions. [2023-02-15 22:10:41,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-15 22:10:41,602 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:10:41,602 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:10:41,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-02-15 22:10:41,811 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 [2023-02-15 22:10:41,811 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:10:41,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:10:41,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1697258562, now seen corresponding path program 1 times [2023-02-15 22:10:41,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:10:41,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117482123] [2023-02-15 22:10:41,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:10:41,812 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 [2023-02-15 22:10:41,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:10:41,814 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) [2023-02-15 22:10:41,815 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 (22)] Waiting until timeout for monitored process [2023-02-15 22:10:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:10:41,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-15 22:10:41,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:10:41,992 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 6 treesize of output 5 [2023-02-15 22:10:42,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:10:42,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:10:42,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:10:42,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117482123] [2023-02-15 22:10:42,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117482123] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:10:42,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:10:42,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 22:10:42,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123704686] [2023-02-15 22:10:42,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:10:42,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 22:10:42,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:10:42,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 22:10:42,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-15 22:10:42,115 INFO L87 Difference]: Start difference. First operand 257 states and 300 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 22:10:42,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:10:42,830 INFO L93 Difference]: Finished difference Result 350 states and 394 transitions. [2023-02-15 22:10:42,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 22:10:42,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2023-02-15 22:10:42,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:10:42,846 INFO L225 Difference]: With dead ends: 350 [2023-02-15 22:10:42,846 INFO L226 Difference]: Without dead ends: 350 [2023-02-15 22:10:42,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-15 22:10:42,847 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 142 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-15 22:10:42,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 846 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-15 22:10:42,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-02-15 22:10:42,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 257. [2023-02-15 22:10:42,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 180 states have (on average 1.5222222222222221) internal successors, (274), 236 states have internal predecessors, (274), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2023-02-15 22:10:42,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 298 transitions. [2023-02-15 22:10:42,851 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 298 transitions. Word has length 44 [2023-02-15 22:10:42,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:10:42,851 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 298 transitions. [2023-02-15 22:10:42,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 22:10:42,851 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 298 transitions. [2023-02-15 22:10:42,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-15 22:10:42,852 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:10:42,852 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:10:42,864 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 (22)] Forceful destruction successful, exit code 0 [2023-02-15 22:10:43,062 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 [2023-02-15 22:10:43,062 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:10:43,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:10:43,063 INFO L85 PathProgramCache]: Analyzing trace with hash 293864698, now seen corresponding path program 1 times [2023-02-15 22:10:43,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:10:43,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796992785] [2023-02-15 22:10:43,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:10:43,063 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 [2023-02-15 22:10:43,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:10:43,064 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) [2023-02-15 22:10:43,067 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 [2023-02-15 22:10:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:10:43,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 52 conjunts are in the unsatisfiable core [2023-02-15 22:10:43,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:10:43,295 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 [2023-02-15 22:10:43,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-15 22:10:43,463 INFO L321 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2023-02-15 22:10:43,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 35 [2023-02-15 22:10:43,492 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 11 treesize of output 5 [2023-02-15 22:10:43,594 INFO L321 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2023-02-15 22:10:43,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 35 [2023-02-15 22:10:43,730 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-02-15 22:10:43,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 39 treesize of output 34 [2023-02-15 22:10:43,935 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 22:10:43,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 82 [2023-02-15 22:10:44,258 INFO L321 Elim1Store]: treesize reduction 107, result has 29.6 percent of original size [2023-02-15 22:10:44,258 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 58 treesize of output 92 [2023-02-15 22:10:44,507 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:10:44,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 55 treesize of output 43 [2023-02-15 22:10:44,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:10:44,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:10:44,596 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:10:44,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796992785] [2023-02-15 22:10:44,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796992785] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:10:44,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:10:44,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-02-15 22:10:44,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288668540] [2023-02-15 22:10:44,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:10:44,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-15 22:10:44,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:10:44,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-15 22:10:44,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2023-02-15 22:10:44,597 INFO L87 Difference]: Start difference. First operand 257 states and 298 transitions. Second operand has 22 states, 18 states have (on average 2.111111111111111) internal successors, (38), 17 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:10:47,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:10:47,734 INFO L93 Difference]: Finished difference Result 317 states and 361 transitions. [2023-02-15 22:10:47,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-15 22:10:47,736 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 2.111111111111111) internal successors, (38), 17 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2023-02-15 22:10:47,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:10:47,737 INFO L225 Difference]: With dead ends: 317 [2023-02-15 22:10:47,737 INFO L226 Difference]: Without dead ends: 317 [2023-02-15 22:10:47,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=228, Invalid=1254, Unknown=0, NotChecked=0, Total=1482 [2023-02-15 22:10:47,737 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 454 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 1837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-02-15 22:10:47,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1262 Invalid, 1837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1779 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-02-15 22:10:47,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-02-15 22:10:47,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 278. [2023-02-15 22:10:47,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 199 states have (on average 1.4974874371859297) internal successors, (298), 256 states have internal predecessors, (298), 11 states have call successors, (11), 9 states have call predecessors, (11), 10 states have return successors, (16), 12 states have call predecessors, (16), 11 states have call successors, (16) [2023-02-15 22:10:47,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 325 transitions. [2023-02-15 22:10:47,742 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 325 transitions. Word has length 45 [2023-02-15 22:10:47,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:10:47,742 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 325 transitions. [2023-02-15 22:10:47,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 2.111111111111111) internal successors, (38), 17 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:10:47,742 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 325 transitions. [2023-02-15 22:10:47,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-15 22:10:47,743 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:10:47,743 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:10:47,765 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 [2023-02-15 22:10:47,952 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 [2023-02-15 22:10:47,952 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:10:47,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:10:47,953 INFO L85 PathProgramCache]: Analyzing trace with hash 293864699, now seen corresponding path program 1 times [2023-02-15 22:10:47,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:10:47,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926869634] [2023-02-15 22:10:47,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:10:47,953 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 [2023-02-15 22:10:47,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:10:47,954 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) [2023-02-15 22:10:47,955 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 [2023-02-15 22:10:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:10:48,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 73 conjunts are in the unsatisfiable core [2023-02-15 22:10:48,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:10:48,221 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 [2023-02-15 22:10:48,277 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-02-15 22:10:48,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-02-15 22:10:48,551 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 11 treesize of output 7 [2023-02-15 22:10:48,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-15 22:10:48,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:10:48,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-15 22:10:48,666 INFO L321 Elim1Store]: treesize reduction 78, result has 35.0 percent of original size [2023-02-15 22:10:48,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 67 [2023-02-15 22:10:48,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2023-02-15 22:10:48,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-02-15 22:10:49,119 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2023-02-15 22:10:49,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2023-02-15 22:10:49,152 INFO L321 Elim1Store]: treesize reduction 18, result has 48.6 percent of original size [2023-02-15 22:10:49,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 35 [2023-02-15 22:10:52,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 22:10:52,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 42 [2023-02-15 22:10:52,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 42 [2023-02-15 22:10:52,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 22:10:53,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2023-02-15 22:10:53,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-15 22:10:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:10:53,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:10:53,587 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:10:53,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926869634] [2023-02-15 22:10:53,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926869634] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:10:53,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:10:53,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-02-15 22:10:53,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710987210] [2023-02-15 22:10:53,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:10:53,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-15 22:10:53,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:10:53,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-15 22:10:53,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2023-02-15 22:10:53,588 INFO L87 Difference]: Start difference. First operand 278 states and 325 transitions. Second operand has 22 states, 18 states have (on average 2.111111111111111) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:10:59,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:11:08,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:11:14,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:11:17,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:11:19,383 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] [2023-02-15 22:11:21,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:11:21,398 INFO L93 Difference]: Finished difference Result 354 states and 392 transitions. [2023-02-15 22:11:21,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-15 22:11:21,399 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 2.111111111111111) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2023-02-15 22:11:21,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:11:21,400 INFO L225 Difference]: With dead ends: 354 [2023-02-15 22:11:21,400 INFO L226 Difference]: Without dead ends: 354 [2023-02-15 22:11:21,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=185, Invalid=1375, Unknown=0, NotChecked=0, Total=1560 [2023-02-15 22:11:21,401 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 408 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 2490 mSolverCounterSat, 42 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 2536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2490 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2023-02-15 22:11:21,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 1370 Invalid, 2536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2490 Invalid, 4 Unknown, 0 Unchecked, 15.6s Time] [2023-02-15 22:11:21,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-02-15 22:11:21,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 312. [2023-02-15 22:11:21,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 226 states have (on average 1.5309734513274336) internal successors, (346), 286 states have internal predecessors, (346), 14 states have call successors, (14), 12 states have call predecessors, (14), 14 states have return successors, (19), 13 states have call predecessors, (19), 14 states have call successors, (19) [2023-02-15 22:11:21,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 379 transitions. [2023-02-15 22:11:21,405 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 379 transitions. Word has length 45 [2023-02-15 22:11:21,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:11:21,405 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 379 transitions. [2023-02-15 22:11:21,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 2.111111111111111) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:11:21,406 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 379 transitions. [2023-02-15 22:11:21,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-15 22:11:21,406 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:11:21,406 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:11:21,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-02-15 22:11:21,606 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 [2023-02-15 22:11:21,606 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:11:21,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:11:21,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1063867589, now seen corresponding path program 1 times [2023-02-15 22:11:21,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:11:21,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694992073] [2023-02-15 22:11:21,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:11:21,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:11:21,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:11:21,609 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) [2023-02-15 22:11:21,611 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 [2023-02-15 22:11:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:11:21,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 66 conjunts are in the unsatisfiable core [2023-02-15 22:11:21,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:11:22,024 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-02-15 22:11:22,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 41 [2023-02-15 22:11:22,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-15 22:11:22,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-15 22:11:22,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-15 22:11:22,419 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 19 treesize of output 18 [2023-02-15 22:11:22,516 INFO L321 Elim1Store]: treesize reduction 56, result has 44.0 percent of original size [2023-02-15 22:11:22,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 72 [2023-02-15 22:11:22,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-02-15 22:11:22,742 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-02-15 22:11:22,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2023-02-15 22:11:22,848 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 14 treesize of output 16 [2023-02-15 22:11:22,869 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 22:11:22,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 40 [2023-02-15 22:11:22,929 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 22:11:22,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 40 [2023-02-15 22:11:22,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 22:11:23,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-15 22:11:23,304 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-15 22:11:23,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 21 [2023-02-15 22:11:23,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:11:23,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:11:23,360 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:11:23,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694992073] [2023-02-15 22:11:23,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694992073] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:11:23,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:11:23,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2023-02-15 22:11:23,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009903953] [2023-02-15 22:11:23,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:11:23,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-15 22:11:23,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:11:23,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-15 22:11:23,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2023-02-15 22:11:23,361 INFO L87 Difference]: Start difference. First operand 312 states and 379 transitions. Second operand has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:11:27,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:11:27,649 INFO L93 Difference]: Finished difference Result 360 states and 402 transitions. [2023-02-15 22:11:27,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-15 22:11:27,649 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2023-02-15 22:11:27,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:11:27,650 INFO L225 Difference]: With dead ends: 360 [2023-02-15 22:11:27,650 INFO L226 Difference]: Without dead ends: 360 [2023-02-15 22:11:27,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=262, Invalid=2188, Unknown=0, NotChecked=0, Total=2450 [2023-02-15 22:11:27,651 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 533 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 2338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-02-15 22:11:27,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 1771 Invalid, 2338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2271 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-02-15 22:11:27,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-02-15 22:11:27,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 315. [2023-02-15 22:11:27,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 229 states have (on average 1.5283842794759825) internal successors, (350), 288 states have internal predecessors, (350), 14 states have call successors, (14), 12 states have call predecessors, (14), 14 states have return successors, (19), 14 states have call predecessors, (19), 14 states have call successors, (19) [2023-02-15 22:11:27,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 383 transitions. [2023-02-15 22:11:27,655 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 383 transitions. Word has length 47 [2023-02-15 22:11:27,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:11:27,656 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 383 transitions. [2023-02-15 22:11:27,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:11:27,656 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 383 transitions. [2023-02-15 22:11:27,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-15 22:11:27,656 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:11:27,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:11:27,675 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 [2023-02-15 22:11:27,856 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 [2023-02-15 22:11:27,856 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting free_reportsErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:11:27,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:11:27,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1063867588, now seen corresponding path program 1 times [2023-02-15 22:11:27,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:11:27,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213772077] [2023-02-15 22:11:27,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:11:27,857 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 [2023-02-15 22:11:27,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:11:27,859 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) [2023-02-15 22:11:27,862 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 [2023-02-15 22:11:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:11:28,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 79 conjunts are in the unsatisfiable core [2023-02-15 22:11:28,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:11:28,211 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-02-15 22:11:28,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-02-15 22:11:28,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-15 22:11:28,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-15 22:11:28,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-15 22:11:28,397 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 21 treesize of output 20 [2023-02-15 22:11:28,520 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 19 treesize of output 18 [2023-02-15 22:11:28,528 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 23 treesize of output 22 [2023-02-15 22:11:28,590 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2023-02-15 22:11:28,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 36 [2023-02-15 22:11:28,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-02-15 22:11:28,803 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-02-15 22:11:28,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2023-02-15 22:11:28,943 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 22:11:28,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 49 [2023-02-15 22:11:28,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2023-02-15 22:11:29,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2023-02-15 22:11:29,034 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 22:11:29,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 49 [2023-02-15 22:11:29,400 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 22:11:29,405 INFO L321 Elim1Store]: treesize reduction 31, result has 8.8 percent of original size [2023-02-15 22:11:29,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 48 [2023-02-15 22:11:29,413 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-15 22:11:29,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 25 [2023-02-15 22:11:29,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:11:29,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:11:29,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:11:29,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213772077] [2023-02-15 22:11:29,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213772077] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:11:29,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:11:29,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-02-15 22:11:29,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456667573] [2023-02-15 22:11:29,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:11:29,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-15 22:11:29,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:11:29,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-15 22:11:29,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2023-02-15 22:11:29,481 INFO L87 Difference]: Start difference. First operand 315 states and 383 transitions. Second operand has 26 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 19 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:11:32,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:11:32,865 INFO L93 Difference]: Finished difference Result 344 states and 380 transitions. [2023-02-15 22:11:32,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-15 22:11:32,866 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 19 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2023-02-15 22:11:32,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:11:32,867 INFO L225 Difference]: With dead ends: 344 [2023-02-15 22:11:32,867 INFO L226 Difference]: Without dead ends: 344 [2023-02-15 22:11:32,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=262, Invalid=1900, Unknown=0, NotChecked=0, Total=2162 [2023-02-15 22:11:32,867 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 420 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-02-15 22:11:32,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 1483 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1637 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-02-15 22:11:32,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-02-15 22:11:32,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 293. [2023-02-15 22:11:32,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 211 states have (on average 1.4928909952606635) internal successors, (315), 268 states have internal predecessors, (315), 12 states have call successors, (12), 11 states have call predecessors, (12), 12 states have return successors, (16), 13 states have call predecessors, (16), 12 states have call successors, (16) [2023-02-15 22:11:32,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 343 transitions. [2023-02-15 22:11:32,873 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 343 transitions. Word has length 47 [2023-02-15 22:11:32,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:11:32,873 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 343 transitions. [2023-02-15 22:11:32,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 19 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:11:32,873 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 343 transitions. [2023-02-15 22:11:32,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-15 22:11:32,873 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:11:32,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:11:32,895 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 (26)] Ended with exit code 0 [2023-02-15 22:11:33,082 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 [2023-02-15 22:11:33,082 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:11:33,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:11:33,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1620254662, now seen corresponding path program 1 times [2023-02-15 22:11:33,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:11:33,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921293447] [2023-02-15 22:11:33,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:11:33,084 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 [2023-02-15 22:11:33,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:11:33,086 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) [2023-02-15 22:11:33,087 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 [2023-02-15 22:11:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:11:33,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-15 22:11:33,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:11:33,599 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-02-15 22:11:33,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 53 [2023-02-15 22:11:33,832 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-02-15 22:11:33,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 42 [2023-02-15 22:11:34,001 INFO L321 Elim1Store]: treesize reduction 118, result has 27.6 percent of original size [2023-02-15 22:11:34,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 38 treesize of output 73 [2023-02-15 22:11:34,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 22:11:34,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2023-02-15 22:11:34,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 22:11:34,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 22:11:34,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 22:11:35,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 22:11:35,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-15 22:11:36,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:11:36,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:11:36,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:11:36,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921293447] [2023-02-15 22:11:36,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921293447] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:11:36,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:11:36,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-02-15 22:11:36,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377997978] [2023-02-15 22:11:36,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:11:36,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-15 22:11:36,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:11:36,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-15 22:11:36,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2023-02-15 22:11:36,004 INFO L87 Difference]: Start difference. First operand 293 states and 343 transitions. Second operand has 19 states, 16 states have (on average 2.5625) internal successors, (41), 17 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:11:56,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:11:56,798 INFO L93 Difference]: Finished difference Result 461 states and 520 transitions. [2023-02-15 22:11:56,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-15 22:11:56,799 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 2.5625) internal successors, (41), 17 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2023-02-15 22:11:56,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:11:56,800 INFO L225 Difference]: With dead ends: 461 [2023-02-15 22:11:56,800 INFO L226 Difference]: Without dead ends: 461 [2023-02-15 22:11:56,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=275, Invalid=1131, Unknown=0, NotChecked=0, Total=1406 [2023-02-15 22:11:56,800 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 1386 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 1942 mSolverCounterSat, 126 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1942 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-02-15 22:11:56,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 1106 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1942 Invalid, 11 Unknown, 0 Unchecked, 7.6s Time] [2023-02-15 22:11:56,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2023-02-15 22:11:56,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 319. [2023-02-15 22:11:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 238 states have (on average 1.4915966386554622) internal successors, (355), 293 states have internal predecessors, (355), 13 states have call successors, (13), 11 states have call predecessors, (13), 12 states have return successors, (17), 14 states have call predecessors, (17), 13 states have call successors, (17) [2023-02-15 22:11:56,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 385 transitions. [2023-02-15 22:11:56,806 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 385 transitions. Word has length 47 [2023-02-15 22:11:56,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:11:56,806 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 385 transitions. [2023-02-15 22:11:56,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 2.5625) internal successors, (41), 17 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:11:56,806 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 385 transitions. [2023-02-15 22:11:56,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-15 22:11:56,807 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:11:56,807 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:11:56,835 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 [2023-02-15 22:11:57,017 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 [2023-02-15 22:11:57,017 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:11:57,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:11:57,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1620254663, now seen corresponding path program 1 times [2023-02-15 22:11:57,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:11:57,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177744627] [2023-02-15 22:11:57,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:11:57,019 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 [2023-02-15 22:11:57,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:11:57,020 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) [2023-02-15 22:11:57,023 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 [2023-02-15 22:11:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:11:57,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 73 conjunts are in the unsatisfiable core [2023-02-15 22:11:57,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:11:57,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:11:57,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-15 22:11:57,559 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-02-15 22:11:57,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-02-15 22:11:57,755 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 6 treesize of output 7 [2023-02-15 22:11:57,781 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-15 22:11:57,781 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 12 treesize of output 18 [2023-02-15 22:11:57,907 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-02-15 22:11:57,907 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 [2023-02-15 22:11:57,930 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 22:11:57,931 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 12 treesize of output 14 [2023-02-15 22:11:58,086 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 22:11:58,105 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 22:11:58,269 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 36 treesize of output 47 [2023-02-15 22:11:58,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2023-02-15 22:11:58,537 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 14 treesize of output 16 [2023-02-15 22:11:58,557 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 14 treesize of output 16 [2023-02-15 22:11:58,644 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 14 treesize of output 16 [2023-02-15 22:11:58,649 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 14 treesize of output 16 [2023-02-15 22:11:58,771 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 14 treesize of output 16 [2023-02-15 22:11:58,797 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 14 treesize of output 16 [2023-02-15 22:11:58,910 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 14 treesize of output 16 [2023-02-15 22:11:58,917 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 14 treesize of output 16 [2023-02-15 22:11:59,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-15 22:11:59,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-15 22:11:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:11:59,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:11:59,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:11:59,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177744627] [2023-02-15 22:11:59,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177744627] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:11:59,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:11:59,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-02-15 22:11:59,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270727762] [2023-02-15 22:11:59,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:11:59,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-15 22:11:59,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:11:59,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-15 22:11:59,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=297, Unknown=7, NotChecked=0, Total=342 [2023-02-15 22:11:59,175 INFO L87 Difference]: Start difference. First operand 319 states and 385 transitions. Second operand has 19 states, 16 states have (on average 2.5625) internal successors, (41), 17 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:12:05,220 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] [2023-02-15 22:12:07,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:12:09,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:12:16,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:12:18,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:12:21,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:12:21,805 INFO L93 Difference]: Finished difference Result 581 states and 660 transitions. [2023-02-15 22:12:21,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-02-15 22:12:21,806 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 2.5625) internal successors, (41), 17 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2023-02-15 22:12:21,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:12:21,808 INFO L225 Difference]: With dead ends: 581 [2023-02-15 22:12:21,808 INFO L226 Difference]: Without dead ends: 581 [2023-02-15 22:12:21,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=487, Invalid=2050, Unknown=13, NotChecked=0, Total=2550 [2023-02-15 22:12:21,811 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 1878 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 168 mSolverCounterUnsat, 106 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 3146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 106 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2023-02-15 22:12:21,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 1141 Invalid, 3146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2872 Invalid, 106 Unknown, 0 Unchecked, 17.9s Time] [2023-02-15 22:12:21,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2023-02-15 22:12:21,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 318. [2023-02-15 22:12:21,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 238 states have (on average 1.4747899159663866) internal successors, (351), 292 states have internal predecessors, (351), 13 states have call successors, (13), 11 states have call predecessors, (13), 12 states have return successors, (17), 14 states have call predecessors, (17), 13 states have call successors, (17) [2023-02-15 22:12:21,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 381 transitions. [2023-02-15 22:12:21,822 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 381 transitions. Word has length 47 [2023-02-15 22:12:21,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:12:21,822 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 381 transitions. [2023-02-15 22:12:21,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 2.5625) internal successors, (41), 17 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:12:21,823 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 381 transitions. [2023-02-15 22:12:21,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-15 22:12:21,823 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:12:21,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:12:21,837 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 (28)] Ended with exit code 0 [2023-02-15 22:12:22,035 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 [2023-02-15 22:12:22,036 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:12:22,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:12:22,037 INFO L85 PathProgramCache]: Analyzing trace with hash -2130667900, now seen corresponding path program 1 times [2023-02-15 22:12:22,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:12:22,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950199415] [2023-02-15 22:12:22,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:12:22,038 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 [2023-02-15 22:12:22,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:12:22,039 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) [2023-02-15 22:12:22,041 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 [2023-02-15 22:12:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:12:22,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 75 conjunts are in the unsatisfiable core [2023-02-15 22:12:22,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:12:22,744 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-02-15 22:12:22,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-02-15 22:12:22,966 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 11 treesize of output 7 [2023-02-15 22:12:23,065 INFO L321 Elim1Store]: treesize reduction 92, result has 31.3 percent of original size [2023-02-15 22:12:23,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 37 treesize of output 67 [2023-02-15 22:12:23,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:12:23,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:12:23,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:12:23,206 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2023-02-15 22:12:23,207 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 1 case distinctions, treesize of input 33 treesize of output 21 [2023-02-15 22:12:23,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:12:23,501 INFO L321 Elim1Store]: treesize reduction 148, result has 26.4 percent of original size [2023-02-15 22:12:23,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 83 [2023-02-15 22:12:23,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 37 [2023-02-15 22:12:23,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 22:12:24,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 76 [2023-02-15 22:12:24,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 14 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2023-02-15 22:12:24,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 22:12:24,400 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 22:12:24,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 53 [2023-02-15 22:12:24,509 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 22:12:24,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 53 [2023-02-15 22:12:24,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 22:12:24,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 22:12:24,630 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 22:12:24,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 53 [2023-02-15 22:12:24,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 22:12:24,783 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 22:12:24,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 53 [2023-02-15 22:12:25,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-15 22:12:25,584 INFO L321 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2023-02-15 22:12:25,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 35 [2023-02-15 22:12:25,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:12:25,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:12:25,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:12:25,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950199415] [2023-02-15 22:12:25,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950199415] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:12:25,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:12:25,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-02-15 22:12:25,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536696731] [2023-02-15 22:12:25,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:12:25,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-15 22:12:25,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:12:25,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-15 22:12:25,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2023-02-15 22:12:25,803 INFO L87 Difference]: Start difference. First operand 318 states and 381 transitions. Second operand has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:12:40,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:12:43,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:12:46,399 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] [2023-02-15 22:12:53,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:12:53,785 INFO L93 Difference]: Finished difference Result 561 states and 634 transitions. [2023-02-15 22:12:53,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-02-15 22:12:53,786 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 50 [2023-02-15 22:12:53,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:12:53,787 INFO L225 Difference]: With dead ends: 561 [2023-02-15 22:12:53,787 INFO L226 Difference]: Without dead ends: 561 [2023-02-15 22:12:53,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=523, Invalid=2233, Unknown=0, NotChecked=0, Total=2756 [2023-02-15 22:12:53,788 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 1237 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 2808 mSolverCounterSat, 135 mSolverCounterUnsat, 33 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 2976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2808 IncrementalHoareTripleChecker+Invalid, 33 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:12:53,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 1522 Invalid, 2976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 2808 Invalid, 33 Unknown, 0 Unchecked, 17.0s Time] [2023-02-15 22:12:53,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2023-02-15 22:12:53,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 333. [2023-02-15 22:12:53,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 250 states have (on average 1.46) internal successors, (365), 305 states have internal predecessors, (365), 14 states have call successors, (14), 13 states have call predecessors, (14), 14 states have return successors, (19), 14 states have call predecessors, (19), 14 states have call successors, (19) [2023-02-15 22:12:53,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 398 transitions. [2023-02-15 22:12:53,811 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 398 transitions. Word has length 50 [2023-02-15 22:12:53,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:12:53,811 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 398 transitions. [2023-02-15 22:12:53,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:12:53,811 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 398 transitions. [2023-02-15 22:12:53,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-15 22:12:53,811 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:12:53,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:12:53,823 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 [2023-02-15 22:12:54,016 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 [2023-02-15 22:12:54,016 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:12:54,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:12:54,017 INFO L85 PathProgramCache]: Analyzing trace with hash -2130667899, now seen corresponding path program 1 times [2023-02-15 22:12:54,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:12:54,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808930522] [2023-02-15 22:12:54,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:12:54,018 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 [2023-02-15 22:12:54,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:12:54,020 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) [2023-02-15 22:12:54,021 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 [2023-02-15 22:12:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:12:54,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 110 conjunts are in the unsatisfiable core [2023-02-15 22:12:54,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:12:54,801 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 6 treesize of output 5 [2023-02-15 22:12:54,899 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-02-15 22:12:54,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-02-15 22:12:55,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 22:12:55,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-15 22:12:55,346 INFO L321 Elim1Store]: treesize reduction 78, result has 35.0 percent of original size [2023-02-15 22:12:55,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 67 [2023-02-15 22:12:55,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-15 22:12:55,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-02-15 22:12:55,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:12:55,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:12:55,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:12:55,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-02-15 22:12:55,739 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2023-02-15 22:12:55,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2023-02-15 22:12:55,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:12:55,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:12:55,809 INFO L321 Elim1Store]: treesize reduction 58, result has 26.6 percent of original size [2023-02-15 22:12:55,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 38 treesize of output 44 [2023-02-15 22:12:56,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 39 [2023-02-15 22:12:56,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-02-15 22:12:56,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:12:56,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:12:56,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:12:56,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:12:56,593 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 22:12:56,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 57 [2023-02-15 22:12:56,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2023-02-15 22:12:56,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:12:56,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:12:56,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:12:56,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:12:56,624 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 22:12:56,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 78 [2023-02-15 22:12:57,110 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 22:12:57,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2023-02-15 22:12:57,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:12:57,146 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-15 22:12:57,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2023-02-15 22:12:57,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2023-02-15 22:12:57,299 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-02-15 22:12:57,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 30 [2023-02-15 22:12:57,325 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 22:12:57,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2023-02-15 22:12:57,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2023-02-15 22:12:57,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2023-02-15 22:12:57,557 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 22:12:57,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2023-02-15 22:12:57,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:12:57,600 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-15 22:12:57,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2023-02-15 22:12:57,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:12:57,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:12:57,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2023-02-15 22:12:57,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2023-02-15 22:12:57,824 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 22:12:57,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2023-02-15 22:13:02,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2023-02-15 22:13:02,654 INFO L321 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2023-02-15 22:13:02,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 52 [2023-02-15 22:13:02,675 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-15 22:13:02,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2023-02-15 22:13:02,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:13:02,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:13:02,944 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:13:02,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808930522] [2023-02-15 22:13:02,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808930522] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:13:02,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:13:02,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2023-02-15 22:13:02,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394910319] [2023-02-15 22:13:02,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:13:02,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-02-15 22:13:02,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:13:02,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-02-15 22:13:02,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=743, Unknown=0, NotChecked=0, Total=812 [2023-02-15 22:13:02,945 INFO L87 Difference]: Start difference. First operand 333 states and 398 transitions. Second operand has 29 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 24 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:13:32,474 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] [2023-02-15 22:13:54,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:13:54,627 INFO L93 Difference]: Finished difference Result 605 states and 689 transitions. [2023-02-15 22:13:54,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-02-15 22:13:54,654 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 24 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 50 [2023-02-15 22:13:54,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:13:54,655 INFO L225 Difference]: With dead ends: 605 [2023-02-15 22:13:54,655 INFO L226 Difference]: Without dead ends: 605 [2023-02-15 22:13:54,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 41.0s TimeCoverageRelationStatistics Valid=640, Invalid=3915, Unknown=1, NotChecked=0, Total=4556 [2023-02-15 22:13:54,656 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 925 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 4748 mSolverCounterSat, 111 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 4860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 4748 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2023-02-15 22:13:54,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 2270 Invalid, 4860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 4748 Invalid, 1 Unknown, 0 Unchecked, 16.7s Time] [2023-02-15 22:13:54,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2023-02-15 22:13:54,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 375. [2023-02-15 22:13:54,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 290 states have (on average 1.4310344827586208) internal successors, (415), 346 states have internal predecessors, (415), 15 states have call successors, (15), 14 states have call predecessors, (15), 15 states have return successors, (21), 14 states have call predecessors, (21), 15 states have call successors, (21) [2023-02-15 22:13:54,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 451 transitions. [2023-02-15 22:13:54,662 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 451 transitions. Word has length 50 [2023-02-15 22:13:54,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:13:54,662 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 451 transitions. [2023-02-15 22:13:54,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 24 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:13:54,662 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 451 transitions. [2023-02-15 22:13:54,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-15 22:13:54,663 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:13:54,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:13:54,674 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 [2023-02-15 22:13:54,873 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 [2023-02-15 22:13:54,873 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:13:54,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:13:54,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1565616984, now seen corresponding path program 1 times [2023-02-15 22:13:54,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:13:54,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763198628] [2023-02-15 22:13:54,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:13:54,874 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 [2023-02-15 22:13:54,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:13:54,875 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) [2023-02-15 22:13:54,876 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 [2023-02-15 22:13:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:13:55,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 22:13:55,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:13:55,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:13:55,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:13:55,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:13:55,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763198628] [2023-02-15 22:13:55,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763198628] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:13:55,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:13:55,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 22:13:55,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489878743] [2023-02-15 22:13:55,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:13:55,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 22:13:55,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:13:55,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 22:13:55,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:13:55,084 INFO L87 Difference]: Start difference. First operand 375 states and 451 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 22:13:55,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:13:55,388 INFO L93 Difference]: Finished difference Result 395 states and 469 transitions. [2023-02-15 22:13:55,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 22:13:55,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2023-02-15 22:13:55,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:13:55,389 INFO L225 Difference]: With dead ends: 395 [2023-02-15 22:13:55,389 INFO L226 Difference]: Without dead ends: 395 [2023-02-15 22:13:55,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 22:13:55,390 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 44 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 22:13:55,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 508 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 22:13:55,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2023-02-15 22:13:55,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 387. [2023-02-15 22:13:55,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 301 states have (on average 1.4318936877076411) internal successors, (431), 356 states have internal predecessors, (431), 16 states have call successors, (16), 15 states have call predecessors, (16), 16 states have return successors, (22), 15 states have call predecessors, (22), 16 states have call successors, (22) [2023-02-15 22:13:55,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 469 transitions. [2023-02-15 22:13:55,395 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 469 transitions. Word has length 52 [2023-02-15 22:13:55,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:13:55,395 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 469 transitions. [2023-02-15 22:13:55,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 22:13:55,395 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 469 transitions. [2023-02-15 22:13:55,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-15 22:13:55,395 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:13:55,395 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:13:55,417 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 [2023-02-15 22:13:55,596 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 [2023-02-15 22:13:55,596 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:13:55,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:13:55,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1565616985, now seen corresponding path program 1 times [2023-02-15 22:13:55,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:13:55,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795912363] [2023-02-15 22:13:55,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:13:55,597 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 [2023-02-15 22:13:55,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:13:55,598 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) [2023-02-15 22:13:55,600 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 [2023-02-15 22:13:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:13:55,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 78 conjunts are in the unsatisfiable core [2023-02-15 22:13:55,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:13:56,030 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-02-15 22:13:56,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-02-15 22:13:56,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-15 22:13:56,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-15 22:13:56,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-15 22:13:56,241 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 21 treesize of output 20 [2023-02-15 22:13:56,371 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 19 treesize of output 18 [2023-02-15 22:13:56,378 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 23 treesize of output 22 [2023-02-15 22:13:56,432 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2023-02-15 22:13:56,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 36 [2023-02-15 22:13:56,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-02-15 22:13:56,641 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-02-15 22:13:56,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2023-02-15 22:13:56,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2023-02-15 22:13:56,762 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 22:13:56,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 49 [2023-02-15 22:13:56,864 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 22:13:56,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 49 [2023-02-15 22:13:56,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2023-02-15 22:13:57,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:13:57,181 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 22:13:57,185 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-15 22:13:57,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 27 [2023-02-15 22:13:57,192 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-15 22:13:57,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 16 [2023-02-15 22:13:57,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:13:57,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:13:57,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:13:57,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795912363] [2023-02-15 22:13:57,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795912363] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:13:57,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:13:57,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2023-02-15 22:13:57,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971618719] [2023-02-15 22:13:57,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:13:57,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-15 22:13:57,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:13:57,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-15 22:13:57,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2023-02-15 22:13:57,282 INFO L87 Difference]: Start difference. First operand 387 states and 469 transitions. Second operand has 28 states, 25 states have (on average 1.76) internal successors, (44), 21 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:14:00,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:14:00,749 INFO L93 Difference]: Finished difference Result 417 states and 486 transitions. [2023-02-15 22:14:00,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-15 22:14:00,754 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 1.76) internal successors, (44), 21 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2023-02-15 22:14:00,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:14:00,755 INFO L225 Difference]: With dead ends: 417 [2023-02-15 22:14:00,755 INFO L226 Difference]: Without dead ends: 417 [2023-02-15 22:14:00,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=263, Invalid=1993, Unknown=0, NotChecked=0, Total=2256 [2023-02-15 22:14:00,756 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 384 mSDsluCounter, 1981 mSDsCounter, 0 mSdLazyCounter, 1970 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-02-15 22:14:00,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 2111 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1970 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-02-15 22:14:00,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-02-15 22:14:00,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 376. [2023-02-15 22:14:00,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 292 states have (on average 1.4212328767123288) internal successors, (415), 347 states have internal predecessors, (415), 15 states have call successors, (15), 14 states have call predecessors, (15), 15 states have return successors, (21), 14 states have call predecessors, (21), 15 states have call successors, (21) [2023-02-15 22:14:00,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 451 transitions. [2023-02-15 22:14:00,771 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 451 transitions. Word has length 52 [2023-02-15 22:14:00,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:14:00,771 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 451 transitions. [2023-02-15 22:14:00,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 1.76) internal successors, (44), 21 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:14:00,772 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 451 transitions. [2023-02-15 22:14:00,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-15 22:14:00,772 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:14:00,772 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:14:00,797 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 (32)] Forceful destruction successful, exit code 0 [2023-02-15 22:14:00,981 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 [2023-02-15 22:14:00,982 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-02-15 22:14:00,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:14:00,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1996654393, now seen corresponding path program 1 times [2023-02-15 22:14:00,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:14:00,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677430054] [2023-02-15 22:14:00,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:14:00,982 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 [2023-02-15 22:14:00,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:14:00,984 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) [2023-02-15 22:14:00,986 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 [2023-02-15 22:14:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:14:01,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 98 conjunts are in the unsatisfiable core [2023-02-15 22:14:01,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:14:01,886 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 6 treesize of output 5 [2023-02-15 22:14:01,954 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-02-15 22:14:01,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-02-15 22:14:02,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-15 22:14:02,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 22:14:02,388 INFO L321 Elim1Store]: treesize reduction 78, result has 35.0 percent of original size [2023-02-15 22:14:02,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 67 [2023-02-15 22:14:02,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-15 22:14:02,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-02-15 22:14:02,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:14:02,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:14:02,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:14:02,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-02-15 22:14:02,803 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2023-02-15 22:14:02,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2023-02-15 22:14:02,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:14:02,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:14:02,857 INFO L321 Elim1Store]: treesize reduction 58, result has 26.6 percent of original size [2023-02-15 22:14:02,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 38 treesize of output 44 [2023-02-15 22:14:03,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 35 [2023-02-15 22:14:03,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-02-15 22:14:03,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:14:03,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:14:03,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:14:03,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:14:03,433 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 22:14:03,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 57 [2023-02-15 22:14:03,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:14:03,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:14:03,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:14:03,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:14:03,476 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 22:14:03,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 74 [2023-02-15 22:14:03,875 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 22:14:03,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 51 [2023-02-15 22:14:03,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:14:03,920 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-15 22:14:03,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2023-02-15 22:14:04,060 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 22:14:04,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 51 [2023-02-15 22:14:04,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:14:04,109 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-15 22:14:04,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2023-02-15 22:14:04,277 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 22:14:04,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 51 [2023-02-15 22:14:04,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:14:04,329 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-15 22:14:04,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2023-02-15 22:14:04,521 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 22:14:04,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 51 [2023-02-15 22:14:04,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:14:04,535 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 22:14:04,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2023-02-15 22:14:05,776 INFO L321 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2023-02-15 22:14:05,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 48 [2023-02-15 22:14:05,789 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-15 22:14:05,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2023-02-15 22:14:06,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:14:06,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:14:06,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:14:06,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677430054] [2023-02-15 22:14:06,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677430054] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:14:06,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:14:06,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-02-15 22:14:06,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422426374] [2023-02-15 22:14:06,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:14:06,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-15 22:14:06,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:14:06,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-15 22:14:06,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2023-02-15 22:14:06,180 INFO L87 Difference]: Start difference. First operand 376 states and 451 transitions. Second operand has 26 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 21 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)