./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0102-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 26d01a9c 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/memsafety/test-0102-1.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 fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 05:06:07,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 05:06:07,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 05:06:07,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 05:06:07,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 05:06:07,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 05:06:07,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 05:06:07,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 05:06:07,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 05:06:07,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 05:06:07,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 05:06:07,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 05:06:07,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 05:06:07,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 05:06:07,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 05:06:07,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 05:06:07,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 05:06:07,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 05:06:07,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 05:06:07,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 05:06:07,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 05:06:07,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 05:06:07,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 05:06:07,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 05:06:07,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 05:06:07,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 05:06:07,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 05:06:07,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 05:06:07,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 05:06:07,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 05:06:07,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 05:06:07,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 05:06:07,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 05:06:07,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 05:06:07,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 05:06:07,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 05:06:07,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 05:06:07,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 05:06:07,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 05:06:07,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 05:06:07,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 05:06:07,365 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-18 05:06:07,380 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 05:06:07,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 05:06:07,383 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 05:06:07,383 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 05:06:07,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 05:06:07,384 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 05:06:07,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 05:06:07,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 05:06:07,384 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 05:06:07,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 05:06:07,385 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 05:06:07,385 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 05:06:07,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 05:06:07,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 05:06:07,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 05:06:07,386 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 05:06:07,386 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 05:06:07,386 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 05:06:07,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 05:06:07,386 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 05:06:07,386 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 05:06:07,386 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 05:06:07,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 05:06:07,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 05:06:07,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 05:06:07,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 05:06:07,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 05:06:07,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 05:06:07,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 05:06:07,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 05:06:07,388 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 05:06:07,388 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 05:06:07,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 05:06:07,388 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 05:06:07,388 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f [2023-02-18 05:06:07,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 05:06:07,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 05:06:07,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 05:06:07,599 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 05:06:07,600 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 05:06:07,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0102-1.i [2023-02-18 05:06:08,581 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 05:06:08,784 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 05:06:08,785 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0102-1.i [2023-02-18 05:06:08,794 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3509f05d/3b6c8069259b4474b742252e62aa9d25/FLAG4a76ceafd [2023-02-18 05:06:08,805 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3509f05d/3b6c8069259b4474b742252e62aa9d25 [2023-02-18 05:06:08,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 05:06:08,809 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 05:06:08,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 05:06:08,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 05:06:08,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 05:06:08,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 05:06:08" (1/1) ... [2023-02-18 05:06:08,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5882b0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:06:08, skipping insertion in model container [2023-02-18 05:06:08,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 05:06:08" (1/1) ... [2023-02-18 05:06:08,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 05:06:08,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 05:06:09,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 05:06:09,022 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-02-18 05:06:09,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@445bd55a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:06:09, skipping insertion in model container [2023-02-18 05:06:09,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 05:06:09,024 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-18 05:06:09,025 INFO L158 Benchmark]: Toolchain (without parser) took 214.85ms. Allocated memory is still 146.8MB. Free memory was 110.4MB in the beginning and 98.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-18 05:06:09,026 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 146.8MB. Free memory is still 120.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 05:06:09,026 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.33ms. Allocated memory is still 146.8MB. Free memory was 110.4MB in the beginning and 98.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-18 05:06:09,027 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 146.8MB. Free memory is still 120.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.33ms. Allocated memory is still 146.8MB. Free memory was 110.4MB in the beginning and 98.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 551]: 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/memsafety/test-0102-1.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 fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 05:06:10,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 05:06:10,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 05:06:10,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 05:06:10,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 05:06:10,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 05:06:10,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 05:06:10,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 05:06:10,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 05:06:10,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 05:06:10,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 05:06:10,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 05:06:10,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 05:06:10,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 05:06:10,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 05:06:10,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 05:06:10,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 05:06:10,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 05:06:10,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 05:06:10,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 05:06:10,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 05:06:10,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 05:06:10,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 05:06:10,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 05:06:10,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 05:06:10,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 05:06:10,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 05:06:10,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 05:06:10,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 05:06:10,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 05:06:10,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 05:06:10,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 05:06:10,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 05:06:10,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 05:06:10,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 05:06:10,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 05:06:10,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 05:06:10,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 05:06:10,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 05:06:10,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 05:06:10,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 05:06:10,639 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-18 05:06:10,655 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 05:06:10,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 05:06:10,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 05:06:10,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 05:06:10,656 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 05:06:10,656 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 05:06:10,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 05:06:10,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 05:06:10,658 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 05:06:10,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 05:06:10,659 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 05:06:10,659 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 05:06:10,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 05:06:10,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 05:06:10,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 05:06:10,660 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 05:06:10,660 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 05:06:10,660 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 05:06:10,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 05:06:10,660 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 05:06:10,661 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-18 05:06:10,661 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-18 05:06:10,661 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 05:06:10,661 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 05:06:10,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 05:06:10,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 05:06:10,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 05:06:10,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 05:06:10,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 05:06:10,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 05:06:10,662 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-18 05:06:10,663 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-18 05:06:10,663 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 05:06:10,663 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 05:06:10,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 05:06:10,663 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-18 05:06:10,663 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 05:06:10,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f [2023-02-18 05:06:10,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 05:06:10,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 05:06:10,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 05:06:10,930 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 05:06:10,930 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 05:06:10,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0102-1.i [2023-02-18 05:06:11,914 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 05:06:12,167 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 05:06:12,170 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0102-1.i [2023-02-18 05:06:12,183 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2705886e8/44209dc3bf4f4c4091a0563e507b5117/FLAG83ddfd73b [2023-02-18 05:06:12,200 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2705886e8/44209dc3bf4f4c4091a0563e507b5117 [2023-02-18 05:06:12,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 05:06:12,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 05:06:12,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 05:06:12,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 05:06:12,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 05:06:12,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 05:06:12" (1/1) ... [2023-02-18 05:06:12,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e11a006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:06:12, skipping insertion in model container [2023-02-18 05:06:12,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 05:06:12" (1/1) ... [2023-02-18 05:06:12,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 05:06:12,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 05:06:12,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 05:06:12,518 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-18 05:06:12,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 05:06:12,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 05:06:12,572 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 05:06:12,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 05:06:12,642 INFO L208 MainTranslator]: Completed translation [2023-02-18 05:06:12,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:06:12 WrapperNode [2023-02-18 05:06:12,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 05:06:12,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 05:06:12,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 05:06:12,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 05:06:12,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:06:12" (1/1) ... [2023-02-18 05:06:12,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:06:12" (1/1) ... [2023-02-18 05:06:12,698 INFO L138 Inliner]: procedures = 136, calls = 38, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 86 [2023-02-18 05:06:12,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 05:06:12,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 05:06:12,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 05:06:12,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 05:06:12,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:06:12" (1/1) ... [2023-02-18 05:06:12,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:06:12" (1/1) ... [2023-02-18 05:06:12,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:06:12" (1/1) ... [2023-02-18 05:06:12,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:06:12" (1/1) ... [2023-02-18 05:06:12,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:06:12" (1/1) ... [2023-02-18 05:06:12,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:06:12" (1/1) ... [2023-02-18 05:06:12,742 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:06:12" (1/1) ... [2023-02-18 05:06:12,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:06:12" (1/1) ... [2023-02-18 05:06:12,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 05:06:12,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 05:06:12,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 05:06:12,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 05:06:12,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:06:12" (1/1) ... [2023-02-18 05:06:12,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 05:06:12,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 05:06:12,780 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 05:06:12,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 05:06:12,810 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-02-18 05:06:12,811 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-02-18 05:06:12,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 05:06:12,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 05:06:12,811 INFO L130 BoogieDeclarations]: Found specification of procedure create_sub_list [2023-02-18 05:06:12,811 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sub_list [2023-02-18 05:06:12,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 05:06:12,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-18 05:06:12,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-18 05:06:12,812 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_sub [2023-02-18 05:06:12,812 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_sub [2023-02-18 05:06:12,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-18 05:06:12,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 05:06:12,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-18 05:06:12,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-18 05:06:12,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 05:06:12,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 05:06:12,952 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 05:06:12,953 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 05:06:13,273 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 05:06:13,292 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 05:06:13,293 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-18 05:06:13,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 05:06:13 BoogieIcfgContainer [2023-02-18 05:06:13,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 05:06:13,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 05:06:13,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 05:06:13,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 05:06:13,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 05:06:12" (1/3) ... [2023-02-18 05:06:13,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25257033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 05:06:13, skipping insertion in model container [2023-02-18 05:06:13,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:06:12" (2/3) ... [2023-02-18 05:06:13,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25257033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 05:06:13, skipping insertion in model container [2023-02-18 05:06:13,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 05:06:13" (3/3) ... [2023-02-18 05:06:13,300 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0102-1.i [2023-02-18 05:06:13,311 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 05:06:13,311 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2023-02-18 05:06:13,339 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 05:06:13,343 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;@211e7308, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 05:06:13,344 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-02-18 05:06:13,347 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 46 states have (on average 1.891304347826087) internal successors, (87), 77 states have internal predecessors, (87), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 05:06:13,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-18 05:06:13,352 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 05:06:13,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-18 05:06:13,352 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 05:06:13,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 05:06:13,358 INFO L85 PathProgramCache]: Analyzing trace with hash 106012329, now seen corresponding path program 1 times [2023-02-18 05:06:13,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 05:06:13,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032230802] [2023-02-18 05:06:13,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 05:06:13,367 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 [2023-02-18 05:06:13,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 05:06:13,369 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 05:06:13,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-18 05:06:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 05:06:13,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-18 05:06:13,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 05:06:13,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 05:06:13,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 05:06:13,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 05:06:13,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032230802] [2023-02-18 05:06:13,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032230802] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 05:06:13,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 05:06:13,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 05:06:13,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627970365] [2023-02-18 05:06:13,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 05:06:13,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 05:06:13,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 05:06:13,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 05:06:13,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 05:06:13,525 INFO L87 Difference]: Start difference. First operand has 87 states, 46 states have (on average 1.891304347826087) internal successors, (87), 77 states have internal predecessors, (87), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:13,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 05:06:13,545 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2023-02-18 05:06:13,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 05:06:13,547 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-02-18 05:06:13,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 05:06:13,552 INFO L225 Difference]: With dead ends: 87 [2023-02-18 05:06:13,552 INFO L226 Difference]: Without dead ends: 85 [2023-02-18 05:06:13,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 05:06:13,573 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 05:06:13,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 05:06:13,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-18 05:06:13,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-02-18 05:06:13,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 45 states have (on average 1.7555555555555555) internal successors, (79), 75 states have internal predecessors, (79), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 05:06:13,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2023-02-18 05:06:13,606 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 5 [2023-02-18 05:06:13,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 05:06:13,606 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2023-02-18 05:06:13,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:13,606 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2023-02-18 05:06:13,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 05:06:13,607 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 05:06:13,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 05:06:13,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-02-18 05:06:13,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:13,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 05:06:13,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 05:06:13,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1219357814, now seen corresponding path program 1 times [2023-02-18 05:06:13,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 05:06:13,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391474790] [2023-02-18 05:06:13,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 05:06:13,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:13,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 05:06:13,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 05:06:13,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-18 05:06:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 05:06:13,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 05:06:13,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 05:06:13,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 05:06:13,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 05:06:13,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 05:06:13,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 05:06:13,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391474790] [2023-02-18 05:06:13,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391474790] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 05:06:13,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 05:06:13,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 05:06:13,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48753546] [2023-02-18 05:06:13,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 05:06:13,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 05:06:13,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 05:06:13,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 05:06:13,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 05:06:13,947 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:14,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 05:06:14,168 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2023-02-18 05:06:14,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 05:06:14,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-18 05:06:14,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 05:06:14,172 INFO L225 Difference]: With dead ends: 91 [2023-02-18 05:06:14,172 INFO L226 Difference]: Without dead ends: 91 [2023-02-18 05:06:14,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 05:06:14,173 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 39 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 05:06:14,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 190 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 05:06:14,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-02-18 05:06:14,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 83. [2023-02-18 05:06:14,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 45 states have (on average 1.711111111111111) internal successors, (77), 73 states have internal predecessors, (77), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 05:06:14,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2023-02-18 05:06:14,189 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 7 [2023-02-18 05:06:14,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 05:06:14,189 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2023-02-18 05:06:14,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:14,190 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2023-02-18 05:06:14,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 05:06:14,190 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 05:06:14,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 05:06:14,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-18 05:06:14,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:14,398 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 05:06:14,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 05:06:14,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1219357813, now seen corresponding path program 1 times [2023-02-18 05:06:14,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 05:06:14,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225299979] [2023-02-18 05:06:14,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 05:06:14,399 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:14,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 05:06:14,400 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 05:06:14,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-18 05:06:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 05:06:14,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 05:06:14,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 05:06:14,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 05:06:14,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 05:06:14,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 05:06:14,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 05:06:14,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225299979] [2023-02-18 05:06:14,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225299979] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 05:06:14,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 05:06:14,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 05:06:14,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727740729] [2023-02-18 05:06:14,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 05:06:14,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 05:06:14,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 05:06:14,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 05:06:14,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 05:06:14,496 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:14,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 05:06:14,664 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2023-02-18 05:06:14,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 05:06:14,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-18 05:06:14,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 05:06:14,666 INFO L225 Difference]: With dead ends: 87 [2023-02-18 05:06:14,666 INFO L226 Difference]: Without dead ends: 87 [2023-02-18 05:06:14,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 05:06:14,667 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 5 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 05:06:14,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 254 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 05:06:14,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-18 05:06:14,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2023-02-18 05:06:14,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 48 states have (on average 1.6666666666666667) internal successors, (80), 75 states have internal predecessors, (80), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 05:06:14,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2023-02-18 05:06:14,672 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 7 [2023-02-18 05:06:14,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 05:06:14,673 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2023-02-18 05:06:14,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:14,673 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2023-02-18 05:06:14,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-18 05:06:14,673 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 05:06:14,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 05:06:14,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-02-18 05:06:14,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:14,874 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting create_sub_listErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 05:06:14,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 05:06:14,875 INFO L85 PathProgramCache]: Analyzing trace with hash -778231822, now seen corresponding path program 1 times [2023-02-18 05:06:14,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 05:06:14,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24263720] [2023-02-18 05:06:14,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 05:06:14,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:14,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 05:06:14,877 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 05:06:14,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-18 05:06:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 05:06:14,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 05:06:14,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 05:06:14,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 05:06:14,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 05:06:14,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 05:06:14,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 05:06:14,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24263720] [2023-02-18 05:06:14,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24263720] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 05:06:14,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 05:06:14,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 05:06:14,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111266151] [2023-02-18 05:06:14,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 05:06:14,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 05:06:14,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 05:06:14,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 05:06:14,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 05:06:14,951 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:15,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 05:06:15,016 INFO L93 Difference]: Finished difference Result 86 states and 92 transitions. [2023-02-18 05:06:15,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 05:06:15,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-18 05:06:15,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 05:06:15,017 INFO L225 Difference]: With dead ends: 86 [2023-02-18 05:06:15,017 INFO L226 Difference]: Without dead ends: 86 [2023-02-18 05:06:15,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 05:06:15,018 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 05:06:15,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 132 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 05:06:15,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-02-18 05:06:15,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2023-02-18 05:06:15,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 48 states have (on average 1.6458333333333333) internal successors, (79), 74 states have internal predecessors, (79), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 05:06:15,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2023-02-18 05:06:15,022 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 11 [2023-02-18 05:06:15,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 05:06:15,023 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2023-02-18 05:06:15,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:15,023 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2023-02-18 05:06:15,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-18 05:06:15,023 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 05:06:15,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 05:06:15,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-18 05:06:15,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:15,229 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting create_sub_listErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 05:06:15,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 05:06:15,230 INFO L85 PathProgramCache]: Analyzing trace with hash -778231821, now seen corresponding path program 1 times [2023-02-18 05:06:15,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 05:06:15,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810539030] [2023-02-18 05:06:15,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 05:06:15,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:15,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 05:06:15,231 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 05:06:15,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-18 05:06:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 05:06:15,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 05:06:15,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 05:06:15,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 05:06:15,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 05:06:15,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 05:06:15,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 05:06:15,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810539030] [2023-02-18 05:06:15,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810539030] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 05:06:15,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 05:06:15,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 05:06:15,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130558174] [2023-02-18 05:06:15,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 05:06:15,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 05:06:15,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 05:06:15,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 05:06:15,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 05:06:15,296 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:15,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 05:06:15,405 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2023-02-18 05:06:15,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 05:06:15,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-18 05:06:15,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 05:06:15,406 INFO L225 Difference]: With dead ends: 85 [2023-02-18 05:06:15,406 INFO L226 Difference]: Without dead ends: 85 [2023-02-18 05:06:15,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 05:06:15,407 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 5 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 05:06:15,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 136 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 05:06:15,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-18 05:06:15,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2023-02-18 05:06:15,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 48 states have (on average 1.625) internal successors, (78), 73 states have internal predecessors, (78), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 05:06:15,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2023-02-18 05:06:15,411 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 11 [2023-02-18 05:06:15,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 05:06:15,411 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2023-02-18 05:06:15,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:15,411 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2023-02-18 05:06:15,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-18 05:06:15,411 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 05:06:15,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 05:06:15,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-18 05:06:15,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:15,613 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting list_add_tailErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 05:06:15,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 05:06:15,614 INFO L85 PathProgramCache]: Analyzing trace with hash -70636768, now seen corresponding path program 1 times [2023-02-18 05:06:15,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 05:06:15,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154570356] [2023-02-18 05:06:15,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 05:06:15,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:15,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 05:06:15,615 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 05:06:15,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-18 05:06:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 05:06:15,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-18 05:06:15,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 05:06:15,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 05:06:15,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 05:06:15,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 05:06:15,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-18 05:06:15,760 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 05:06:15,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-18 05:06:15,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 05:06:15,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 05:06:15,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 05:06:15,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154570356] [2023-02-18 05:06:15,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154570356] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 05:06:15,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 05:06:15,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 05:06:15,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437878718] [2023-02-18 05:06:15,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 05:06:15,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 05:06:15,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 05:06:15,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 05:06:15,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-02-18 05:06:15,791 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:16,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 05:06:16,135 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2023-02-18 05:06:16,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 05:06:16,135 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-18 05:06:16,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 05:06:16,136 INFO L225 Difference]: With dead ends: 112 [2023-02-18 05:06:16,136 INFO L226 Difference]: Without dead ends: 112 [2023-02-18 05:06:16,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-02-18 05:06:16,136 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 54 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 05:06:16,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 331 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 05:06:16,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-02-18 05:06:16,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 102. [2023-02-18 05:06:16,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 63 states have (on average 1.6349206349206349) internal successors, (103), 89 states have internal predecessors, (103), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 05:06:16,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2023-02-18 05:06:16,140 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 14 [2023-02-18 05:06:16,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 05:06:16,140 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2023-02-18 05:06:16,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:16,141 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2023-02-18 05:06:16,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-18 05:06:16,141 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 05:06:16,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 05:06:16,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-02-18 05:06:16,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:16,345 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting list_add_tailErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 05:06:16,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 05:06:16,345 INFO L85 PathProgramCache]: Analyzing trace with hash -70636769, now seen corresponding path program 1 times [2023-02-18 05:06:16,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 05:06:16,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [915852647] [2023-02-18 05:06:16,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 05:06:16,346 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:16,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 05:06:16,347 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 05:06:16,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-18 05:06:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 05:06:16,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-18 05:06:16,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 05:06:16,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 05:06:16,450 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 05:06:16,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2023-02-18 05:06:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 05:06:16,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 05:06:16,531 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 05:06:16,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [915852647] [2023-02-18 05:06:16,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [915852647] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 05:06:16,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 05:06:16,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 05:06:16,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523337909] [2023-02-18 05:06:16,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 05:06:16,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 05:06:16,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 05:06:16,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 05:06:16,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-02-18 05:06:16,533 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:16,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 05:06:16,847 INFO L93 Difference]: Finished difference Result 131 states and 146 transitions. [2023-02-18 05:06:16,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 05:06:16,848 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-18 05:06:16,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 05:06:16,848 INFO L225 Difference]: With dead ends: 131 [2023-02-18 05:06:16,848 INFO L226 Difference]: Without dead ends: 131 [2023-02-18 05:06:16,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-02-18 05:06:16,849 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 87 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 05:06:16,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 278 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 05:06:16,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-02-18 05:06:16,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 112. [2023-02-18 05:06:16,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 72 states have (on average 1.6666666666666667) internal successors, (120), 98 states have internal predecessors, (120), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 05:06:16,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 134 transitions. [2023-02-18 05:06:16,853 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 134 transitions. Word has length 14 [2023-02-18 05:06:16,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 05:06:16,853 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 134 transitions. [2023-02-18 05:06:16,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:16,853 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 134 transitions. [2023-02-18 05:06:16,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 05:06:16,853 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 05:06:16,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 05:06:16,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-02-18 05:06:17,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:17,054 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting list_add_tailErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 05:06:17,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 05:06:17,054 INFO L85 PathProgramCache]: Analyzing trace with hash 837542848, now seen corresponding path program 1 times [2023-02-18 05:06:17,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 05:06:17,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981222215] [2023-02-18 05:06:17,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 05:06:17,055 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:17,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 05:06:17,056 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 05:06:17,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-18 05:06:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 05:06:17,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 05:06:17,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 05:06:17,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 05:06:17,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 05:06:17,136 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 05:06:17,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981222215] [2023-02-18 05:06:17,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981222215] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 05:06:17,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 05:06:17,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 05:06:17,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335927014] [2023-02-18 05:06:17,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 05:06:17,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 05:06:17,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 05:06:17,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 05:06:17,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 05:06:17,137 INFO L87 Difference]: Start difference. First operand 112 states and 134 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:17,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 05:06:17,214 INFO L93 Difference]: Finished difference Result 111 states and 131 transitions. [2023-02-18 05:06:17,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 05:06:17,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-18 05:06:17,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 05:06:17,215 INFO L225 Difference]: With dead ends: 111 [2023-02-18 05:06:17,215 INFO L226 Difference]: Without dead ends: 111 [2023-02-18 05:06:17,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 05:06:17,215 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 27 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 05:06:17,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 169 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 05:06:17,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-02-18 05:06:17,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2023-02-18 05:06:17,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 72 states have (on average 1.625) internal successors, (117), 97 states have internal predecessors, (117), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 05:06:17,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2023-02-18 05:06:17,219 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 16 [2023-02-18 05:06:17,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 05:06:17,219 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2023-02-18 05:06:17,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:17,219 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2023-02-18 05:06:17,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 05:06:17,219 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 05:06:17,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 05:06:17,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-02-18 05:06:17,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:17,427 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting list_add_tailErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 05:06:17,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 05:06:17,428 INFO L85 PathProgramCache]: Analyzing trace with hash 837542849, now seen corresponding path program 1 times [2023-02-18 05:06:17,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 05:06:17,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134914531] [2023-02-18 05:06:17,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 05:06:17,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:17,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 05:06:17,429 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 05:06:17,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-02-18 05:06:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 05:06:17,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-18 05:06:17,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 05:06:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 05:06:17,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 05:06:17,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 05:06:17,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134914531] [2023-02-18 05:06:17,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134914531] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 05:06:17,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 05:06:17,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-18 05:06:17,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757199042] [2023-02-18 05:06:17,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 05:06:17,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 05:06:17,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 05:06:17,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 05:06:17,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-02-18 05:06:17,558 INFO L87 Difference]: Start difference. First operand 111 states and 131 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:17,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 05:06:17,804 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2023-02-18 05:06:17,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 05:06:17,806 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-18 05:06:17,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 05:06:17,806 INFO L225 Difference]: With dead ends: 119 [2023-02-18 05:06:17,806 INFO L226 Difference]: Without dead ends: 119 [2023-02-18 05:06:17,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-02-18 05:06:17,807 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 96 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 05:06:17,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 511 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 05:06:17,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-02-18 05:06:17,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 111. [2023-02-18 05:06:17,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 72 states have (on average 1.6111111111111112) internal successors, (116), 97 states have internal predecessors, (116), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 05:06:17,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 130 transitions. [2023-02-18 05:06:17,810 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 130 transitions. Word has length 16 [2023-02-18 05:06:17,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 05:06:17,810 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 130 transitions. [2023-02-18 05:06:17,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:17,810 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 130 transitions. [2023-02-18 05:06:17,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 05:06:17,810 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 05:06:17,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 05:06:17,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-02-18 05:06:18,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:18,018 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting list_add_tailErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 05:06:18,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 05:06:18,019 INFO L85 PathProgramCache]: Analyzing trace with hash 194024551, now seen corresponding path program 1 times [2023-02-18 05:06:18,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 05:06:18,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738009773] [2023-02-18 05:06:18,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 05:06:18,019 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 [2023-02-18 05:06:18,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 05:06:18,020 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 05:06:18,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-02-18 05:06:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 05:06:18,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 05:06:18,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 05:06:18,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 05:06:18,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 05:06:18,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 05:06:18,129 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 05:06:18,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738009773] [2023-02-18 05:06:18,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738009773] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 05:06:18,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 05:06:18,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 05:06:18,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319693672] [2023-02-18 05:06:18,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 05:06:18,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 05:06:18,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 05:06:18,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 05:06:18,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 05:06:18,131 INFO L87 Difference]: Start difference. First operand 111 states and 130 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:18,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 05:06:18,315 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions. [2023-02-18 05:06:18,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 05:06:18,315 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-18 05:06:18,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 05:06:18,315 INFO L225 Difference]: With dead ends: 118 [2023-02-18 05:06:18,316 INFO L226 Difference]: Without dead ends: 118 [2023-02-18 05:06:18,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-02-18 05:06:18,316 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 49 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 05:06:18,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 251 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 05:06:18,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-02-18 05:06:18,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 110. [2023-02-18 05:06:18,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 72 states have (on average 1.5416666666666667) internal successors, (111), 96 states have internal predecessors, (111), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 05:06:18,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2023-02-18 05:06:18,319 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 17 [2023-02-18 05:06:18,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 05:06:18,319 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2023-02-18 05:06:18,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:18,319 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2023-02-18 05:06:18,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 05:06:18,319 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 05:06:18,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 05:06:18,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-02-18 05:06:18,526 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 [2023-02-18 05:06:18,527 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting list_add_tailErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 05:06:18,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 05:06:18,527 INFO L85 PathProgramCache]: Analyzing trace with hash 194024552, now seen corresponding path program 1 times [2023-02-18 05:06:18,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 05:06:18,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304282791] [2023-02-18 05:06:18,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 05:06:18,528 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:18,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 05:06:18,528 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) [2023-02-18 05:06:18,529 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 [2023-02-18 05:06:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 05:06:18,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 05:06:18,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 05:06:18,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 05:06:18,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 05:06:18,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 05:06:18,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 05:06:18,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304282791] [2023-02-18 05:06:18,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304282791] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 05:06:18,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 05:06:18,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 05:06:18,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346507166] [2023-02-18 05:06:18,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 05:06:18,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 05:06:18,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 05:06:18,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 05:06:18,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 05:06:18,646 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:18,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 05:06:18,878 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2023-02-18 05:06:18,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 05:06:18,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-18 05:06:18,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 05:06:18,881 INFO L225 Difference]: With dead ends: 116 [2023-02-18 05:06:18,881 INFO L226 Difference]: Without dead ends: 116 [2023-02-18 05:06:18,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-02-18 05:06:18,882 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 36 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 05:06:18,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 271 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 05:06:18,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-02-18 05:06:18,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 110. [2023-02-18 05:06:18,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 72 states have (on average 1.4861111111111112) internal successors, (107), 96 states have internal predecessors, (107), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 05:06:18,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2023-02-18 05:06:18,885 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 17 [2023-02-18 05:06:18,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 05:06:18,885 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2023-02-18 05:06:18,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:18,886 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2023-02-18 05:06:18,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-18 05:06:18,886 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 05:06:18,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 05:06:18,895 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 [2023-02-18 05:06:19,093 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 [2023-02-18 05:06:19,094 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting list_add_tailErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 05:06:19,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 05:06:19,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1774001130, now seen corresponding path program 1 times [2023-02-18 05:06:19,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 05:06:19,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947933908] [2023-02-18 05:06:19,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 05:06:19,095 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:19,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 05:06:19,096 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 05:06:19,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-02-18 05:06:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 05:06:19,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-18 05:06:19,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 05:06:19,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 05:06:19,264 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 13 treesize of output 9 [2023-02-18 05:06:19,275 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 [2023-02-18 05:06:19,281 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 05:06:19,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-18 05:06:19,294 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 16 treesize of output 18 [2023-02-18 05:06:19,333 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 19 treesize of output 7 [2023-02-18 05:06:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 05:06:19,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 05:06:19,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 05:06:19,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947933908] [2023-02-18 05:06:19,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947933908] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 05:06:19,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 05:06:19,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-02-18 05:06:19,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737658762] [2023-02-18 05:06:19,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 05:06:19,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 05:06:19,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 05:06:19,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 05:06:19,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-02-18 05:06:19,355 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:19,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 05:06:19,854 INFO L93 Difference]: Finished difference Result 145 states and 161 transitions. [2023-02-18 05:06:19,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 05:06:19,855 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-02-18 05:06:19,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 05:06:19,856 INFO L225 Difference]: With dead ends: 145 [2023-02-18 05:06:19,856 INFO L226 Difference]: Without dead ends: 145 [2023-02-18 05:06:19,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-02-18 05:06:19,856 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 59 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 05:06:19,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 435 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 05:06:19,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-02-18 05:06:19,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 132. [2023-02-18 05:06:19,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 92 states have (on average 1.423913043478261) internal successors, (131), 116 states have internal predecessors, (131), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-18 05:06:19,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 149 transitions. [2023-02-18 05:06:19,860 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 149 transitions. Word has length 19 [2023-02-18 05:06:19,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 05:06:19,860 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 149 transitions. [2023-02-18 05:06:19,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:19,861 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 149 transitions. [2023-02-18 05:06:19,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-18 05:06:19,861 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 05:06:19,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 05:06:19,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-02-18 05:06:20,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:20,070 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting list_add_tailErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 05:06:20,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 05:06:20,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1774001131, now seen corresponding path program 1 times [2023-02-18 05:06:20,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 05:06:20,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [485414521] [2023-02-18 05:06:20,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 05:06:20,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:20,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 05:06:20,072 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 05:06:20,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-02-18 05:06:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 05:06:20,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 46 conjunts are in the unsatisfiable core [2023-02-18 05:06:20,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 05:06:20,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 05:06:20,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 05:06:20,245 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 13 treesize of output 9 [2023-02-18 05:06:20,248 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 13 treesize of output 9 [2023-02-18 05:06:20,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 05:06:20,262 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 [2023-02-18 05:06:20,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 05:06:20,266 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 [2023-02-18 05:06:20,278 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 05:06:20,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-18 05:06:20,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-18 05:06:20,302 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 16 treesize of output 18 [2023-02-18 05:06:20,309 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 16 treesize of output 18 [2023-02-18 05:06:20,353 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 19 treesize of output 7 [2023-02-18 05:06:20,357 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 19 treesize of output 7 [2023-02-18 05:06:20,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 05:06:20,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 05:06:20,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 05:06:20,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [485414521] [2023-02-18 05:06:20,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [485414521] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 05:06:20,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 05:06:20,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-02-18 05:06:20,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736251753] [2023-02-18 05:06:20,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 05:06:20,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 05:06:20,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 05:06:20,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 05:06:20,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-02-18 05:06:20,384 INFO L87 Difference]: Start difference. First operand 132 states and 149 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:20,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 05:06:20,987 INFO L93 Difference]: Finished difference Result 135 states and 150 transitions. [2023-02-18 05:06:20,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 05:06:20,987 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-02-18 05:06:20,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 05:06:20,989 INFO L225 Difference]: With dead ends: 135 [2023-02-18 05:06:20,989 INFO L226 Difference]: Without dead ends: 135 [2023-02-18 05:06:20,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-02-18 05:06:20,989 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 32 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 05:06:20,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 508 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 05:06:20,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-02-18 05:06:20,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2023-02-18 05:06:20,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 94 states have (on average 1.4042553191489362) internal successors, (132), 119 states have internal predecessors, (132), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-18 05:06:20,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 150 transitions. [2023-02-18 05:06:20,993 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 150 transitions. Word has length 19 [2023-02-18 05:06:20,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 05:06:20,993 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 150 transitions. [2023-02-18 05:06:20,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:06:20,994 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 150 transitions. [2023-02-18 05:06:20,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-18 05:06:20,994 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 05:06:20,994 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 05:06:21,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-02-18 05:06:21,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:21,200 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 05:06:21,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 05:06:21,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1031850971, now seen corresponding path program 1 times [2023-02-18 05:06:21,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 05:06:21,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411500236] [2023-02-18 05:06:21,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 05:06:21,202 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:21,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 05:06:21,203 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 05:06:21,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-02-18 05:06:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 05:06:21,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-18 05:06:21,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 05:06:21,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 05:06:21,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 05:06:21,381 WARN L859 $PredicateComparison]: unable to prove that (exists ((|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_448 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_448))) (= (_ bv0 1) (select |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base|)))) is different from true [2023-02-18 05:06:21,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 05:06:21,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 05:06:21,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-18 05:06:21,410 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 05:06:21,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-18 05:06:21,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 05:06:21,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 05:06:21,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 05:06:21,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411500236] [2023-02-18 05:06:21,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411500236] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 05:06:21,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [548478248] [2023-02-18 05:06:21,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 05:06:21,579 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-18 05:06:21,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-18 05:06:21,585 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-02-18 05:06:21,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-02-18 05:06:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 05:06:21,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-18 05:06:21,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 05:06:21,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 05:06:21,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 05:06:21,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 05:06:22,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 05:06:22,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-18 05:06:22,071 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 05:06:22,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-18 05:06:22,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 05:06:22,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 05:06:22,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [548478248] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 05:06:22,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 05:06:22,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12] total 13 [2023-02-18 05:06:22,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940908066] [2023-02-18 05:06:22,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 05:06:22,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-18 05:06:22,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 05:06:22,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-18 05:06:22,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=263, Unknown=3, NotChecked=32, Total=342 [2023-02-18 05:06:22,236 INFO L87 Difference]: Start difference. First operand 135 states and 150 transitions. Second operand has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-18 05:06:24,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 05:06:28,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 05:06:31,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 05:06:31,446 INFO L93 Difference]: Finished difference Result 163 states and 184 transitions. [2023-02-18 05:06:31,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-18 05:06:31,446 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2023-02-18 05:06:31,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 05:06:31,447 INFO L225 Difference]: With dead ends: 163 [2023-02-18 05:06:31,447 INFO L226 Difference]: Without dead ends: 163 [2023-02-18 05:06:31,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=80, Invalid=471, Unknown=5, NotChecked=44, Total=600 [2023-02-18 05:06:31,448 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 82 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-02-18 05:06:31,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 292 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 664 Invalid, 2 Unknown, 90 Unchecked, 4.9s Time] [2023-02-18 05:06:31,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-02-18 05:06:31,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 143. [2023-02-18 05:06:31,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 100 states have (on average 1.39) internal successors, (139), 124 states have internal predecessors, (139), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2023-02-18 05:06:31,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 160 transitions. [2023-02-18 05:06:31,452 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 160 transitions. Word has length 29 [2023-02-18 05:06:31,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 05:06:31,452 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 160 transitions. [2023-02-18 05:06:31,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-18 05:06:31,452 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 160 transitions. [2023-02-18 05:06:31,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-18 05:06:31,453 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 05:06:31,453 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 05:06:31,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2023-02-18 05:06:31,675 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 (15)] Forceful destruction successful, exit code 0 [2023-02-18 05:06:31,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:31,869 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting list_add_tailErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 05:06:31,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 05:06:31,869 INFO L85 PathProgramCache]: Analyzing trace with hash 343570640, now seen corresponding path program 1 times [2023-02-18 05:06:31,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 05:06:31,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487733721] [2023-02-18 05:06:31,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 05:06:31,870 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:31,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 05:06:31,871 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 05:06:31,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-02-18 05:06:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 05:06:32,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-18 05:06:32,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 05:06:32,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 05:06:32,230 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 29 treesize of output 29 [2023-02-18 05:06:32,247 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 05:06:32,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-18 05:06:32,310 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 05:06:32,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 05:06:33,305 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 96 treesize of output 90 [2023-02-18 05:06:33,317 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 05:06:33,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 116 [2023-02-18 05:06:33,602 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 05:06:33,602 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 106 treesize of output 108 [2023-02-18 05:06:33,610 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 05:06:33,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 86 treesize of output 126 [2023-02-18 05:06:33,983 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 05:06:33,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 246 treesize of output 312 [2023-02-18 05:06:33,994 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 05:06:33,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 230 treesize of output 300 [2023-02-18 05:06:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 05:06:34,215 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 05:06:34,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487733721] [2023-02-18 05:06:34,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487733721] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 05:06:34,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 05:06:34,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-02-18 05:06:34,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630399714] [2023-02-18 05:06:34,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 05:06:34,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-18 05:06:34,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 05:06:34,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-18 05:06:34,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2023-02-18 05:06:34,216 INFO L87 Difference]: Start difference. First operand 143 states and 160 transitions. Second operand has 28 states, 25 states have (on average 2.32) internal successors, (58), 22 states have internal predecessors, (58), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 05:06:37,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 05:06:37,535 INFO L93 Difference]: Finished difference Result 153 states and 167 transitions. [2023-02-18 05:06:37,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-18 05:06:37,536 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.32) internal successors, (58), 22 states have internal predecessors, (58), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2023-02-18 05:06:37,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 05:06:37,537 INFO L225 Difference]: With dead ends: 153 [2023-02-18 05:06:37,537 INFO L226 Difference]: Without dead ends: 153 [2023-02-18 05:06:37,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=180, Invalid=1226, Unknown=0, NotChecked=0, Total=1406 [2023-02-18 05:06:37,537 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 209 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-02-18 05:06:37,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 817 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-02-18 05:06:37,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-02-18 05:06:37,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 141. [2023-02-18 05:06:37,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 99 states have (on average 1.3636363636363635) internal successors, (135), 122 states have internal predecessors, (135), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2023-02-18 05:06:37,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 156 transitions. [2023-02-18 05:06:37,543 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 156 transitions. Word has length 36 [2023-02-18 05:06:37,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 05:06:37,544 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 156 transitions. [2023-02-18 05:06:37,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.32) internal successors, (58), 22 states have internal predecessors, (58), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 05:06:37,544 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 156 transitions. [2023-02-18 05:06:37,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-18 05:06:37,544 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 05:06:37,544 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 05:06:37,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-02-18 05:06:37,754 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 [2023-02-18 05:06:37,755 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting list_add_tailErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 05:06:37,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 05:06:37,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2012582842, now seen corresponding path program 1 times [2023-02-18 05:06:37,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 05:06:37,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484094319] [2023-02-18 05:06:37,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 05:06:37,756 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:06:37,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 05:06:37,757 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) [2023-02-18 05:06:37,758 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 [2023-02-18 05:06:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 05:06:38,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 76 conjunts are in the unsatisfiable core [2023-02-18 05:06:38,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 05:06:38,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 05:06:38,149 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 13 treesize of output 9 [2023-02-18 05:06:38,152 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 13 treesize of output 9 [2023-02-18 05:06:38,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 05:06:38,164 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 [2023-02-18 05:06:38,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 05:06:38,169 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 [2023-02-18 05:06:38,175 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 05:06:38,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2023-02-18 05:06:38,193 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 16 treesize of output 18 [2023-02-18 05:06:38,198 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 16 treesize of output 18 [2023-02-18 05:06:38,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2023-02-18 05:06:38,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 13 treesize of output 5 [2023-02-18 05:06:38,592 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 36 [2023-02-18 05:06:38,609 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 05:06:38,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 125 treesize of output 199 [2023-02-18 05:06:38,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 92 treesize of output 62 [2023-02-18 05:06:38,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 05:06:38,622 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 192 treesize of output 127 [2023-02-18 05:06:38,631 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 05:06:38,644 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 194 treesize of output 110 [2023-02-18 05:06:38,646 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 05:06:38,736 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 05:06:38,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 75 treesize of output 248 [2023-02-18 05:06:38,830 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 05:06:38,830 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 110 treesize of output 124 [2023-02-18 05:06:39,552 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 05:06:39,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 1016 treesize of output 1227