./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/lis-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a31fd051 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/lis-alloca-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 12:46:53,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 12:46:53,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 12:46:53,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 12:46:53,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 12:46:53,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 12:46:53,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 12:46:53,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 12:46:53,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 12:46:53,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 12:46:53,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 12:46:53,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 12:46:53,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 12:46:53,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 12:46:53,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 12:46:53,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 12:46:53,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 12:46:53,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 12:46:53,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 12:46:53,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 12:46:53,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 12:46:53,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 12:46:53,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 12:46:53,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 12:46:53,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 12:46:53,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 12:46:53,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 12:46:53,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 12:46:53,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 12:46:53,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 12:46:53,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 12:46:53,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 12:46:53,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 12:46:53,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 12:46:53,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 12:46:53,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 12:46:53,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 12:46:53,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 12:46:53,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 12:46:53,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 12:46:53,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 12:46:53,593 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-15 12:46:53,620 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 12:46:53,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 12:46:53,621 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 12:46:53,621 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 12:46:53,622 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 12:46:53,622 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 12:46:53,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 12:46:53,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 12:46:53,623 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 12:46:53,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 12:46:53,624 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 12:46:53,625 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 12:46:53,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 12:46:53,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 12:46:53,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 12:46:53,625 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 12:46:53,625 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 12:46:53,626 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 12:46:53,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 12:46:53,626 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 12:46:53,626 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 12:46:53,626 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 12:46:53,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 12:46:53,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 12:46:53,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 12:46:53,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 12:46:53,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 12:46:53,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 12:46:53,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 12:46:53,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 12:46:53,628 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 12:46:53,628 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 12:46:53,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 12:46:53,629 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 12:46:53,629 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf [2023-02-15 12:46:53,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 12:46:53,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 12:46:53,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 12:46:53,906 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 12:46:53,906 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 12:46:53,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2023-02-15 12:46:54,969 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 12:46:55,202 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 12:46:55,203 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2023-02-15 12:46:55,212 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/235a69c9a/bbc6c7f4339f4f169785f4cbbd3d2470/FLAG50d3d351e [2023-02-15 12:46:55,225 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/235a69c9a/bbc6c7f4339f4f169785f4cbbd3d2470 [2023-02-15 12:46:55,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 12:46:55,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 12:46:55,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 12:46:55,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 12:46:55,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 12:46:55,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:46:55" (1/1) ... [2023-02-15 12:46:55,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aac0070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:55, skipping insertion in model container [2023-02-15 12:46:55,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:46:55" (1/1) ... [2023-02-15 12:46:55,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 12:46:55,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 12:46:55,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 12:46:55,520 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-02-15 12:46:55,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@21d4ce2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:55, skipping insertion in model container [2023-02-15 12:46:55,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 12:46:55,523 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-15 12:46:55,525 INFO L158 Benchmark]: Toolchain (without parser) took 295.33ms. Allocated memory is still 146.8MB. Free memory was 116.2MB in the beginning and 104.5MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-15 12:46:55,525 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 115.3MB. Free memory is still 71.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 12:46:55,526 INFO L158 Benchmark]: CACSL2BoogieTranslator took 293.46ms. Allocated memory is still 146.8MB. Free memory was 115.8MB in the beginning and 104.5MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 12:46:55,528 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 115.3MB. Free memory is still 71.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 293.46ms. Allocated memory is still 146.8MB. Free memory was 115.8MB in the beginning and 104.5MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 515]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/lis-alloca-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 12:46:57,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 12:46:57,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 12:46:57,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 12:46:57,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 12:46:57,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 12:46:57,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 12:46:57,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 12:46:57,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 12:46:57,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 12:46:57,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 12:46:57,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 12:46:57,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 12:46:57,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 12:46:57,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 12:46:57,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 12:46:57,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 12:46:57,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 12:46:57,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 12:46:57,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 12:46:57,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 12:46:57,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 12:46:57,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 12:46:57,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 12:46:57,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 12:46:57,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 12:46:57,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 12:46:57,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 12:46:57,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 12:46:57,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 12:46:57,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 12:46:57,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 12:46:57,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 12:46:57,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 12:46:57,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 12:46:57,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 12:46:57,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 12:46:57,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 12:46:57,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 12:46:57,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 12:46:57,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 12:46:57,490 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-15 12:46:57,527 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 12:46:57,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 12:46:57,528 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 12:46:57,529 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 12:46:57,529 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 12:46:57,530 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 12:46:57,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 12:46:57,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 12:46:57,530 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 12:46:57,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 12:46:57,531 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 12:46:57,532 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 12:46:57,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 12:46:57,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 12:46:57,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 12:46:57,532 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 12:46:57,533 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 12:46:57,533 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 12:46:57,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 12:46:57,533 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 12:46:57,533 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-15 12:46:57,534 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-15 12:46:57,534 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 12:46:57,534 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 12:46:57,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 12:46:57,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 12:46:57,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 12:46:57,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 12:46:57,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 12:46:57,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 12:46:57,536 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-15 12:46:57,536 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-15 12:46:57,536 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 12:46:57,536 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 12:46:57,537 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 12:46:57,537 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-15 12:46:57,537 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 12:46:57,537 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf [2023-02-15 12:46:57,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 12:46:57,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 12:46:57,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 12:46:57,889 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 12:46:57,890 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 12:46:57,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2023-02-15 12:46:58,935 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 12:46:59,198 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 12:46:59,200 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2023-02-15 12:46:59,218 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87ddf7f54/b8c9d89e65bf4d6fae49d9f2071d7f10/FLAG5d27b2e1b [2023-02-15 12:46:59,233 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87ddf7f54/b8c9d89e65bf4d6fae49d9f2071d7f10 [2023-02-15 12:46:59,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 12:46:59,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 12:46:59,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 12:46:59,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 12:46:59,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 12:46:59,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:46:59" (1/1) ... [2023-02-15 12:46:59,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@530e9082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:59, skipping insertion in model container [2023-02-15 12:46:59,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:46:59" (1/1) ... [2023-02-15 12:46:59,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 12:46:59,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 12:46:59,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 12:46:59,626 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-15 12:46:59,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 12:46:59,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 12:46:59,680 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 12:46:59,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 12:46:59,747 INFO L208 MainTranslator]: Completed translation [2023-02-15 12:46:59,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:59 WrapperNode [2023-02-15 12:46:59,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 12:46:59,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 12:46:59,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 12:46:59,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 12:46:59,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:59" (1/1) ... [2023-02-15 12:46:59,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:59" (1/1) ... [2023-02-15 12:46:59,822 INFO L138 Inliner]: procedures = 117, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 114 [2023-02-15 12:46:59,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 12:46:59,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 12:46:59,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 12:46:59,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 12:46:59,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:59" (1/1) ... [2023-02-15 12:46:59,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:59" (1/1) ... [2023-02-15 12:46:59,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:59" (1/1) ... [2023-02-15 12:46:59,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:59" (1/1) ... [2023-02-15 12:46:59,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:59" (1/1) ... [2023-02-15 12:46:59,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:59" (1/1) ... [2023-02-15 12:46:59,867 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:59" (1/1) ... [2023-02-15 12:46:59,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:59" (1/1) ... [2023-02-15 12:46:59,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 12:46:59,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 12:46:59,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 12:46:59,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 12:46:59,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:59" (1/1) ... [2023-02-15 12:46:59,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 12:46:59,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:46:59,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 12:46:59,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 12:46:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-15 12:46:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 12:46:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 12:46:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-15 12:46:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 12:46:59,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 12:47:00,055 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 12:47:00,057 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 12:47:00,491 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 12:47:00,498 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 12:47:00,499 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2023-02-15 12:47:00,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:47:00 BoogieIcfgContainer [2023-02-15 12:47:00,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 12:47:00,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 12:47:00,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 12:47:00,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 12:47:00,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 12:46:59" (1/3) ... [2023-02-15 12:47:00,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155c426c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:47:00, skipping insertion in model container [2023-02-15 12:47:00,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:59" (2/3) ... [2023-02-15 12:47:00,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155c426c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:47:00, skipping insertion in model container [2023-02-15 12:47:00,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:47:00" (3/3) ... [2023-02-15 12:47:00,509 INFO L112 eAbstractionObserver]: Analyzing ICFG lis-alloca-1.i [2023-02-15 12:47:00,523 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 12:47:00,524 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2023-02-15 12:47:00,581 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 12:47:00,587 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;@776fbd52, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 12:47:00,587 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-02-15 12:47:00,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 41 states have (on average 1.951219512195122) internal successors, (80), 66 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:00,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 12:47:00,600 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:00,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 12:47:00,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:00,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:00,608 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2023-02-15 12:47:00,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:00,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94375024] [2023-02-15 12:47:00,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:00,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:00,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:00,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:00,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-15 12:47:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:00,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 12:47:00,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:00,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-02-15 12:47:00,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:47:00,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:47:00,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:00,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94375024] [2023-02-15 12:47:00,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94375024] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:47:00,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:47:00,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 12:47:00,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53951114] [2023-02-15 12:47:00,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:47:00,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 12:47:00,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:00,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 12:47:00,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 12:47:00,831 INFO L87 Difference]: Start difference. First operand has 67 states, 41 states have (on average 1.951219512195122) internal successors, (80), 66 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:00,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:00,958 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2023-02-15 12:47:00,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 12:47:00,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-15 12:47:00,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:00,967 INFO L225 Difference]: With dead ends: 66 [2023-02-15 12:47:00,968 INFO L226 Difference]: Without dead ends: 64 [2023-02-15 12:47:00,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 12:47:00,977 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 62 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:00,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 51 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:47:00,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-15 12:47:01,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-02-15 12:47:01,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.8) internal successors, (72), 63 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:01,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2023-02-15 12:47:01,006 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 6 [2023-02-15 12:47:01,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:01,006 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2023-02-15 12:47:01,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:01,007 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2023-02-15 12:47:01,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 12:47:01,007 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:01,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 12:47:01,017 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 (2)] Ended with exit code 0 [2023-02-15 12:47:01,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:01,217 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:01,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:01,217 INFO L85 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2023-02-15 12:47:01,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:01,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719819195] [2023-02-15 12:47:01,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:01,218 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:01,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:01,246 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:01,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-15 12:47:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:01,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 12:47:01,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:01,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-15 12:47:01,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:47:01,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:47:01,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:01,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719819195] [2023-02-15 12:47:01,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [719819195] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:47:01,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:47:01,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 12:47:01,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455016845] [2023-02-15 12:47:01,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:47:01,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 12:47:01,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:01,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 12:47:01,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 12:47:01,342 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:01,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:01,672 INFO L93 Difference]: Finished difference Result 129 states and 144 transitions. [2023-02-15 12:47:01,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 12:47:01,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-15 12:47:01,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:01,675 INFO L225 Difference]: With dead ends: 129 [2023-02-15 12:47:01,675 INFO L226 Difference]: Without dead ends: 129 [2023-02-15 12:47:01,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 12:47:01,677 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 74 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:01,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 275 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 12:47:01,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-02-15 12:47:01,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 67. [2023-02-15 12:47:01,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 43 states have (on average 1.744186046511628) internal successors, (75), 66 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:01,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2023-02-15 12:47:01,686 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 6 [2023-02-15 12:47:01,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:01,687 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2023-02-15 12:47:01,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:01,687 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2023-02-15 12:47:01,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 12:47:01,687 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:01,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 12:47:01,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-15 12:47:01,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:01,888 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:01,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:01,893 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2023-02-15 12:47:01,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:01,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120694319] [2023-02-15 12:47:01,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:01,895 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:01,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:01,896 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:01,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-15 12:47:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:01,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 12:47:01,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:01,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 12:47:02,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:47:02,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:47:02,000 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:02,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120694319] [2023-02-15 12:47:02,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120694319] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:47:02,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:47:02,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 12:47:02,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125803113] [2023-02-15 12:47:02,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:47:02,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 12:47:02,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:02,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 12:47:02,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 12:47:02,003 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:02,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:02,222 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2023-02-15 12:47:02,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 12:47:02,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-15 12:47:02,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:02,224 INFO L225 Difference]: With dead ends: 71 [2023-02-15 12:47:02,224 INFO L226 Difference]: Without dead ends: 71 [2023-02-15 12:47:02,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 12:47:02,225 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 74 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:02,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 109 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 12:47:02,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-02-15 12:47:02,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2023-02-15 12:47:02,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.7619047619047619) internal successors, (74), 65 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:02,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2023-02-15 12:47:02,230 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 6 [2023-02-15 12:47:02,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:02,231 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2023-02-15 12:47:02,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:02,231 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2023-02-15 12:47:02,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-15 12:47:02,231 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:02,231 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:02,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-02-15 12:47:02,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:02,432 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:02,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:02,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1091210163, now seen corresponding path program 1 times [2023-02-15 12:47:02,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:02,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325820154] [2023-02-15 12:47:02,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:02,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:02,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:02,435 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:02,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-15 12:47:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:02,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 12:47:02,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:02,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:47:02,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:47:02,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:47:02,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:02,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325820154] [2023-02-15 12:47:02,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325820154] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:47:02,608 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:47:02,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-15 12:47:02,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676736112] [2023-02-15 12:47:02,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:47:02,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 12:47:02,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:02,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 12:47:02,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-15 12:47:02,610 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:02,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:02,716 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2023-02-15 12:47:02,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 12:47:02,718 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-15 12:47:02,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:02,719 INFO L225 Difference]: With dead ends: 127 [2023-02-15 12:47:02,719 INFO L226 Difference]: Without dead ends: 127 [2023-02-15 12:47:02,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-15 12:47:02,720 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 247 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:02,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 258 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:47:02,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-02-15 12:47:02,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 72. [2023-02-15 12:47:02,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.6666666666666667) internal successors, (80), 71 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:02,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2023-02-15 12:47:02,738 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 10 [2023-02-15 12:47:02,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:02,738 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2023-02-15 12:47:02,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:02,739 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2023-02-15 12:47:02,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-15 12:47:02,739 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:02,740 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:02,750 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 (5)] Ended with exit code 0 [2023-02-15 12:47:02,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:02,941 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:02,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:02,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2023-02-15 12:47:02,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:02,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076279243] [2023-02-15 12:47:02,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:02,945 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:02,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:02,947 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:02,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-15 12:47:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:02,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 12:47:02,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:03,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 12:47:03,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:47:03,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:47:03,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:47:03,440 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:03,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076279243] [2023-02-15 12:47:03,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076279243] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:47:03,441 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:47:03,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-02-15 12:47:03,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937332692] [2023-02-15 12:47:03,441 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:47:03,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 12:47:03,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:03,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 12:47:03,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-15 12:47:03,443 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:04,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:04,399 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2023-02-15 12:47:04,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 12:47:04,400 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-15 12:47:04,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:04,401 INFO L225 Difference]: With dead ends: 140 [2023-02-15 12:47:04,401 INFO L226 Difference]: Without dead ends: 140 [2023-02-15 12:47:04,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2023-02-15 12:47:04,403 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 339 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:04,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 208 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-15 12:47:04,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-02-15 12:47:04,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 84. [2023-02-15 12:47:04,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 60 states have (on average 1.5833333333333333) internal successors, (95), 83 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:04,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2023-02-15 12:47:04,417 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 10 [2023-02-15 12:47:04,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:04,417 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2023-02-15 12:47:04,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:04,418 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2023-02-15 12:47:04,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 12:47:04,418 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:04,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:04,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-15 12:47:04,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:04,627 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:04,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:04,628 INFO L85 PathProgramCache]: Analyzing trace with hash -680998152, now seen corresponding path program 1 times [2023-02-15 12:47:04,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:04,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849215340] [2023-02-15 12:47:04,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:04,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:04,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:04,630 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:04,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-15 12:47:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:04,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 12:47:04,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:04,700 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-02-15 12:47:04,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-02-15 12:47:04,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:47:04,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:47:04,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:04,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849215340] [2023-02-15 12:47:04,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849215340] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:47:04,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:47:04,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 12:47:04,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045652178] [2023-02-15 12:47:04,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:47:04,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 12:47:04,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:04,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 12:47:04,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 12:47:04,713 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:04,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:04,789 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2023-02-15 12:47:04,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 12:47:04,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-15 12:47:04,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:04,791 INFO L225 Difference]: With dead ends: 77 [2023-02-15 12:47:04,791 INFO L226 Difference]: Without dead ends: 77 [2023-02-15 12:47:04,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 12:47:04,792 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 49 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:04,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 49 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:47:04,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-15 12:47:04,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-02-15 12:47:04,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 60 states have (on average 1.4666666666666666) internal successors, (88), 76 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:04,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2023-02-15 12:47:04,798 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 12 [2023-02-15 12:47:04,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:04,798 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2023-02-15 12:47:04,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:04,798 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2023-02-15 12:47:04,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 12:47:04,799 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:04,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:04,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-02-15 12:47:05,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:05,008 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:05,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:05,009 INFO L85 PathProgramCache]: Analyzing trace with hash -680998151, now seen corresponding path program 1 times [2023-02-15 12:47:05,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:05,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1319287248] [2023-02-15 12:47:05,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:05,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:05,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:05,011 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:05,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-15 12:47:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:05,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 12:47:05,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:05,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 12:47:05,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2023-02-15 12:47:05,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-15 12:47:05,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:47:05,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:47:05,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:05,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1319287248] [2023-02-15 12:47:05,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1319287248] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:47:05,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:47:05,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 12:47:05,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080051218] [2023-02-15 12:47:05,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:47:05,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 12:47:05,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:05,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 12:47:05,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 12:47:05,130 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:05,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:05,305 INFO L93 Difference]: Finished difference Result 132 states and 150 transitions. [2023-02-15 12:47:05,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 12:47:05,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-15 12:47:05,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:05,308 INFO L225 Difference]: With dead ends: 132 [2023-02-15 12:47:05,308 INFO L226 Difference]: Without dead ends: 132 [2023-02-15 12:47:05,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 12:47:05,309 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 67 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:05,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 139 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 12:47:05,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-02-15 12:47:05,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 80. [2023-02-15 12:47:05,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 63 states have (on average 1.4603174603174602) internal successors, (92), 79 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:05,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2023-02-15 12:47:05,314 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 12 [2023-02-15 12:47:05,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:05,315 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2023-02-15 12:47:05,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:05,315 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2023-02-15 12:47:05,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 12:47:05,316 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:05,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:05,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-02-15 12:47:05,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:05,525 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:05,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:05,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1074025161, now seen corresponding path program 1 times [2023-02-15 12:47:05,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:05,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186488777] [2023-02-15 12:47:05,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:05,526 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:05,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:05,527 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:05,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-15 12:47:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:05,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 12:47:05,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:05,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 12:47:05,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-02-15 12:47:05,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-15 12:47:05,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:47:05,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:47:05,677 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:05,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186488777] [2023-02-15 12:47:05,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186488777] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:47:05,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:47:05,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 12:47:05,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304380425] [2023-02-15 12:47:05,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:47:05,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 12:47:05,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:05,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 12:47:05,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 12:47:05,679 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:05,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:05,925 INFO L93 Difference]: Finished difference Result 87 states and 100 transitions. [2023-02-15 12:47:05,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 12:47:05,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-15 12:47:05,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:05,928 INFO L225 Difference]: With dead ends: 87 [2023-02-15 12:47:05,928 INFO L226 Difference]: Without dead ends: 87 [2023-02-15 12:47:05,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-15 12:47:05,929 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 73 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:05,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 104 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 12:47:05,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-15 12:47:05,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79. [2023-02-15 12:47:05,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 62 states have (on average 1.467741935483871) internal successors, (91), 78 states have internal predecessors, (91), 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) [2023-02-15 12:47:05,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2023-02-15 12:47:05,933 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 12 [2023-02-15 12:47:05,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:05,934 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2023-02-15 12:47:05,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:05,934 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2023-02-15 12:47:05,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-15 12:47:05,934 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:05,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:05,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-02-15 12:47:06,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:06,141 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:06,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:06,142 INFO L85 PathProgramCache]: Analyzing trace with hash 363893777, now seen corresponding path program 1 times [2023-02-15 12:47:06,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:06,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420463265] [2023-02-15 12:47:06,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:06,142 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:06,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:06,143 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:06,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-02-15 12:47:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:06,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 12:47:06,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:06,225 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-02-15 12:47:06,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 19 [2023-02-15 12:47:06,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:47:06,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:47:06,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:06,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420463265] [2023-02-15 12:47:06,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420463265] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:47:06,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:47:06,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 12:47:06,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748833063] [2023-02-15 12:47:06,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:47:06,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 12:47:06,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:06,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 12:47:06,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 12:47:06,241 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:06,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:06,310 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2023-02-15 12:47:06,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 12:47:06,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-15 12:47:06,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:06,311 INFO L225 Difference]: With dead ends: 77 [2023-02-15 12:47:06,311 INFO L226 Difference]: Without dead ends: 77 [2023-02-15 12:47:06,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 12:47:06,312 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 46 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:06,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 54 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:47:06,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-15 12:47:06,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-02-15 12:47:06,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 62 states have (on average 1.435483870967742) internal successors, (89), 76 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:06,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2023-02-15 12:47:06,316 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 13 [2023-02-15 12:47:06,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:06,316 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2023-02-15 12:47:06,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:06,316 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2023-02-15 12:47:06,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-15 12:47:06,317 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:06,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:06,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-02-15 12:47:06,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:06,525 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:06,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:06,525 INFO L85 PathProgramCache]: Analyzing trace with hash 363893778, now seen corresponding path program 1 times [2023-02-15 12:47:06,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:06,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101311969] [2023-02-15 12:47:06,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:06,526 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:06,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:06,527 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:06,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-02-15 12:47:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:06,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 12:47:06,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:06,640 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-15 12:47:06,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-02-15 12:47:06,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:47:06,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:47:06,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:06,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101311969] [2023-02-15 12:47:06,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101311969] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:47:06,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:47:06,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 12:47:06,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777399689] [2023-02-15 12:47:06,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:47:06,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 12:47:06,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:06,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 12:47:06,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 12:47:06,665 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:06,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:06,827 INFO L93 Difference]: Finished difference Result 128 states and 147 transitions. [2023-02-15 12:47:06,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 12:47:06,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-15 12:47:06,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:06,829 INFO L225 Difference]: With dead ends: 128 [2023-02-15 12:47:06,829 INFO L226 Difference]: Without dead ends: 128 [2023-02-15 12:47:06,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 12:47:06,830 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 60 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:06,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 133 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:47:06,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-02-15 12:47:06,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 81. [2023-02-15 12:47:06,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 66 states have (on average 1.4242424242424243) internal successors, (94), 80 states have internal predecessors, (94), 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) [2023-02-15 12:47:06,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2023-02-15 12:47:06,833 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 13 [2023-02-15 12:47:06,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:06,833 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2023-02-15 12:47:06,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:06,833 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2023-02-15 12:47:06,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-15 12:47:06,834 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:06,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:06,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-02-15 12:47:07,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:07,043 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:07,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:07,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1064958356, now seen corresponding path program 1 times [2023-02-15 12:47:07,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:07,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967013340] [2023-02-15 12:47:07,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:07,044 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:07,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:07,045 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:07,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-02-15 12:47:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:07,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 12:47:07,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:07,136 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-02-15 12:47:07,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 17 [2023-02-15 12:47:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:47:07,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:47:07,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:07,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967013340] [2023-02-15 12:47:07,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967013340] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:47:07,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:47:07,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 12:47:07,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851182300] [2023-02-15 12:47:07,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:47:07,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 12:47:07,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:07,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 12:47:07,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 12:47:07,209 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:07,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:07,438 INFO L93 Difference]: Finished difference Result 84 states and 97 transitions. [2023-02-15 12:47:07,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 12:47:07,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-15 12:47:07,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:07,439 INFO L225 Difference]: With dead ends: 84 [2023-02-15 12:47:07,439 INFO L226 Difference]: Without dead ends: 84 [2023-02-15 12:47:07,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-15 12:47:07,440 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 64 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:07,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 99 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 12:47:07,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-02-15 12:47:07,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 78. [2023-02-15 12:47:07,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 63 states have (on average 1.4285714285714286) internal successors, (90), 77 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:07,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 90 transitions. [2023-02-15 12:47:07,443 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 90 transitions. Word has length 13 [2023-02-15 12:47:07,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:07,443 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 90 transitions. [2023-02-15 12:47:07,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:07,444 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 90 transitions. [2023-02-15 12:47:07,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-15 12:47:07,444 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:07,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:07,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-02-15 12:47:07,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:07,654 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:07,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:07,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1808065813, now seen corresponding path program 1 times [2023-02-15 12:47:07,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:07,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480574628] [2023-02-15 12:47:07,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:07,655 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:07,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:07,656 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:07,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-02-15 12:47:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:07,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 12:47:07,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:07,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:47:07,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:47:07,747 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:07,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480574628] [2023-02-15 12:47:07,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480574628] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:47:07,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:47:07,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 12:47:07,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153313143] [2023-02-15 12:47:07,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:47:07,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 12:47:07,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:07,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 12:47:07,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 12:47:07,749 INFO L87 Difference]: Start difference. First operand 78 states and 90 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-02-15 12:47:07,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:07,919 INFO L93 Difference]: Finished difference Result 128 states and 146 transitions. [2023-02-15 12:47:07,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 12:47:07,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2023-02-15 12:47:07,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:07,920 INFO L225 Difference]: With dead ends: 128 [2023-02-15 12:47:07,920 INFO L226 Difference]: Without dead ends: 128 [2023-02-15 12:47:07,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 12:47:07,921 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 59 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:07,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 208 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 12:47:07,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-02-15 12:47:07,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 80. [2023-02-15 12:47:07,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 79 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:07,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2023-02-15 12:47:07,924 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 15 [2023-02-15 12:47:07,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:07,925 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2023-02-15 12:47:07,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-02-15 12:47:07,925 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2023-02-15 12:47:07,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-15 12:47:07,925 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:07,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:07,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-02-15 12:47:08,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:08,129 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:08,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:08,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1221259799, now seen corresponding path program 1 times [2023-02-15 12:47:08,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:08,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898998774] [2023-02-15 12:47:08,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:08,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:08,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:08,131 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:08,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-02-15 12:47:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:08,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 12:47:08,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:08,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:47:08,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:47:08,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:47:08,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:08,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898998774] [2023-02-15 12:47:08,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898998774] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:47:08,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:47:08,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2023-02-15 12:47:08,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027969108] [2023-02-15 12:47:08,347 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:47:08,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 12:47:08,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:08,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 12:47:08,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-02-15 12:47:08,349 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:08,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:08,763 INFO L93 Difference]: Finished difference Result 130 states and 147 transitions. [2023-02-15 12:47:08,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 12:47:08,764 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-15 12:47:08,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:08,765 INFO L225 Difference]: With dead ends: 130 [2023-02-15 12:47:08,765 INFO L226 Difference]: Without dead ends: 130 [2023-02-15 12:47:08,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-02-15 12:47:08,766 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 437 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:08,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 170 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 12:47:08,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-02-15 12:47:08,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 78. [2023-02-15 12:47:08,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 63 states have (on average 1.4126984126984128) internal successors, (89), 77 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:08,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2023-02-15 12:47:08,768 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 15 [2023-02-15 12:47:08,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:08,768 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2023-02-15 12:47:08,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:08,769 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2023-02-15 12:47:08,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 12:47:08,769 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:08,769 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:08,782 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 [2023-02-15 12:47:08,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:08,970 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:08,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:08,970 INFO L85 PathProgramCache]: Analyzing trace with hash 262068158, now seen corresponding path program 1 times [2023-02-15 12:47:08,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:08,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163198877] [2023-02-15 12:47:08,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:08,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:08,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:08,972 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:08,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-02-15 12:47:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:09,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 12:47:09,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:09,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:47:09,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:47:09,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:47:09,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:09,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163198877] [2023-02-15 12:47:09,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163198877] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:47:09,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:47:09,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-15 12:47:09,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256427109] [2023-02-15 12:47:09,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:47:09,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 12:47:09,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:09,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 12:47:09,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-15 12:47:09,157 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:09,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:09,307 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2023-02-15 12:47:09,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 12:47:09,308 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-15 12:47:09,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:09,308 INFO L225 Difference]: With dead ends: 100 [2023-02-15 12:47:09,308 INFO L226 Difference]: Without dead ends: 100 [2023-02-15 12:47:09,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-15 12:47:09,309 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 53 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:09,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 225 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:47:09,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-02-15 12:47:09,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2023-02-15 12:47:09,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 79 states have (on average 1.3670886075949367) internal successors, (108), 93 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:09,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions. [2023-02-15 12:47:09,312 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 16 [2023-02-15 12:47:09,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:09,312 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 108 transitions. [2023-02-15 12:47:09,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:09,312 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions. [2023-02-15 12:47:09,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 12:47:09,313 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:09,313 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:09,321 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 [2023-02-15 12:47:09,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:09,521 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:09,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:09,521 INFO L85 PathProgramCache]: Analyzing trace with hash -749049092, now seen corresponding path program 1 times [2023-02-15 12:47:09,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:09,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251611643] [2023-02-15 12:47:09,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:09,522 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:09,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:09,523 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:09,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-02-15 12:47:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:09,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 12:47:09,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:47:09,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:47:09,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:47:09,856 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:09,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251611643] [2023-02-15 12:47:09,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251611643] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:47:09,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:47:09,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-02-15 12:47:09,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954472502] [2023-02-15 12:47:09,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:47:09,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 12:47:09,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:09,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 12:47:09,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-02-15 12:47:09,858 INFO L87 Difference]: Start difference. First operand 94 states and 108 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:10,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:10,228 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2023-02-15 12:47:10,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 12:47:10,229 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-15 12:47:10,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:10,230 INFO L225 Difference]: With dead ends: 116 [2023-02-15 12:47:10,230 INFO L226 Difference]: Without dead ends: 116 [2023-02-15 12:47:10,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-02-15 12:47:10,231 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 172 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:10,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 377 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 12:47:10,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-02-15 12:47:10,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 94. [2023-02-15 12:47:10,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 79 states have (on average 1.3670886075949367) internal successors, (108), 93 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:10,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions. [2023-02-15 12:47:10,233 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 16 [2023-02-15 12:47:10,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:10,234 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 108 transitions. [2023-02-15 12:47:10,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:10,234 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions. [2023-02-15 12:47:10,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 12:47:10,234 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:10,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:10,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-02-15 12:47:10,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:10,435 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:10,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:10,435 INFO L85 PathProgramCache]: Analyzing trace with hash -302012765, now seen corresponding path program 1 times [2023-02-15 12:47:10,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:10,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560311404] [2023-02-15 12:47:10,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:10,436 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:10,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:10,437 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:10,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-02-15 12:47:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:10,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 12:47:10,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:10,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:47:10,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:47:10,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-02-15 12:47:10,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:47:10,819 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:10,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560311404] [2023-02-15 12:47:10,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560311404] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:47:10,819 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:47:10,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-02-15 12:47:10,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414559555] [2023-02-15 12:47:10,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:47:10,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 12:47:10,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:10,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 12:47:10,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-02-15 12:47:10,821 INFO L87 Difference]: Start difference. First operand 94 states and 108 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:11,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:11,307 INFO L93 Difference]: Finished difference Result 151 states and 172 transitions. [2023-02-15 12:47:11,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 12:47:11,308 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-15 12:47:11,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:11,309 INFO L225 Difference]: With dead ends: 151 [2023-02-15 12:47:11,309 INFO L226 Difference]: Without dead ends: 151 [2023-02-15 12:47:11,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-02-15 12:47:11,312 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 235 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:11,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 157 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 12:47:11,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-02-15 12:47:11,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 105. [2023-02-15 12:47:11,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 91 states have (on average 1.3846153846153846) internal successors, (126), 104 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:11,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 126 transitions. [2023-02-15 12:47:11,316 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 126 transitions. Word has length 20 [2023-02-15 12:47:11,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:11,317 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 126 transitions. [2023-02-15 12:47:11,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:11,317 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 126 transitions. [2023-02-15 12:47:11,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 12:47:11,318 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:11,318 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:11,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-02-15 12:47:11,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:11,525 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:11,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:11,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1581646975, now seen corresponding path program 2 times [2023-02-15 12:47:11,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:11,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51843981] [2023-02-15 12:47:11,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 12:47:11,526 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:11,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:11,527 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:11,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-02-15 12:47:11,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 12:47:11,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:47:11,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 12:47:11,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:11,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 12:47:11,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-02-15 12:47:11,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-15 12:47:11,737 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 12:47:11,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:47:12,019 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 12:47:12,076 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 12:47:12,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:12,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51843981] [2023-02-15 12:47:12,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51843981] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:47:12,077 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:47:12,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-02-15 12:47:12,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146757254] [2023-02-15 12:47:12,077 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:47:12,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 12:47:12,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:12,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 12:47:12,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-02-15 12:47:12,078 INFO L87 Difference]: Start difference. First operand 105 states and 126 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:13,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:13,955 INFO L93 Difference]: Finished difference Result 237 states and 293 transitions. [2023-02-15 12:47:13,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 12:47:13,956 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-15 12:47:13,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:13,957 INFO L225 Difference]: With dead ends: 237 [2023-02-15 12:47:13,957 INFO L226 Difference]: Without dead ends: 237 [2023-02-15 12:47:13,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2023-02-15 12:47:13,958 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 479 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:13,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 133 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-02-15 12:47:13,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-02-15 12:47:13,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 169. [2023-02-15 12:47:13,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 155 states have (on average 1.4451612903225806) internal successors, (224), 168 states have internal predecessors, (224), 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) [2023-02-15 12:47:13,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 224 transitions. [2023-02-15 12:47:13,962 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 224 transitions. Word has length 20 [2023-02-15 12:47:13,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:13,962 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 224 transitions. [2023-02-15 12:47:13,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:13,963 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 224 transitions. [2023-02-15 12:47:13,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-15 12:47:13,963 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:13,963 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:13,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-02-15 12:47:14,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:14,169 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:14,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:14,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1786415948, now seen corresponding path program 1 times [2023-02-15 12:47:14,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:14,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714410300] [2023-02-15 12:47:14,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:14,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:14,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:14,171 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:14,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-02-15 12:47:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:14,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 12:47:14,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:14,309 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-02-15 12:47:14,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 17 [2023-02-15 12:47:14,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 12:47:14,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:47:14,885 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 12:47:14,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:14,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714410300] [2023-02-15 12:47:14,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714410300] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:47:14,885 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:47:14,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-02-15 12:47:14,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866118890] [2023-02-15 12:47:14,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:47:14,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 12:47:14,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:14,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 12:47:14,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-02-15 12:47:14,886 INFO L87 Difference]: Start difference. First operand 169 states and 224 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:17,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:17,282 INFO L93 Difference]: Finished difference Result 219 states and 260 transitions. [2023-02-15 12:47:17,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 12:47:17,283 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-15 12:47:17,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:17,284 INFO L225 Difference]: With dead ends: 219 [2023-02-15 12:47:17,284 INFO L226 Difference]: Without dead ends: 219 [2023-02-15 12:47:17,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2023-02-15 12:47:17,285 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 639 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:17,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 141 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-02-15 12:47:17,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-02-15 12:47:17,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 184. [2023-02-15 12:47:17,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 170 states have (on average 1.4294117647058824) internal successors, (243), 183 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:17,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 243 transitions. [2023-02-15 12:47:17,289 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 243 transitions. Word has length 21 [2023-02-15 12:47:17,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:17,289 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 243 transitions. [2023-02-15 12:47:17,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:17,290 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 243 transitions. [2023-02-15 12:47:17,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 12:47:17,290 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:17,290 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2023-02-15 12:47:17,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-02-15 12:47:17,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:17,502 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:17,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:17,502 INFO L85 PathProgramCache]: Analyzing trace with hash 302966996, now seen corresponding path program 2 times [2023-02-15 12:47:17,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:17,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863217928] [2023-02-15 12:47:17,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 12:47:17,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:17,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:17,504 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:17,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-02-15 12:47:17,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 12:47:17,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:47:17,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 12:47:17,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:17,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 12:47:17,876 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:47:17,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:47:18,715 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:47:18,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:18,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863217928] [2023-02-15 12:47:18,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1863217928] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:47:18,715 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:47:18,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-02-15 12:47:18,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194486549] [2023-02-15 12:47:18,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:47:18,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-15 12:47:18,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:18,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-15 12:47:18,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2023-02-15 12:47:18,717 INFO L87 Difference]: Start difference. First operand 184 states and 243 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:22,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:22,738 INFO L93 Difference]: Finished difference Result 633 states and 856 transitions. [2023-02-15 12:47:22,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-15 12:47:22,739 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-15 12:47:22,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:22,741 INFO L225 Difference]: With dead ends: 633 [2023-02-15 12:47:22,742 INFO L226 Difference]: Without dead ends: 633 [2023-02-15 12:47:22,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=327, Invalid=665, Unknown=0, NotChecked=0, Total=992 [2023-02-15 12:47:22,743 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 584 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:22,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 968 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-02-15 12:47:22,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-02-15 12:47:22,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 208. [2023-02-15 12:47:22,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 194 states have (on average 1.407216494845361) internal successors, (273), 207 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:22,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 273 transitions. [2023-02-15 12:47:22,749 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 273 transitions. Word has length 22 [2023-02-15 12:47:22,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:22,750 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 273 transitions. [2023-02-15 12:47:22,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:22,750 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 273 transitions. [2023-02-15 12:47:22,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-15 12:47:22,751 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:22,751 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:22,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-02-15 12:47:22,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:22,960 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:22,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:22,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1242696241, now seen corresponding path program 1 times [2023-02-15 12:47:22,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:22,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811654078] [2023-02-15 12:47:22,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:22,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:22,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:22,963 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:22,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-02-15 12:47:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:23,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-15 12:47:23,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:23,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 12:47:23,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-02-15 12:47:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:47:23,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:47:23,578 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:47:23,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:23,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811654078] [2023-02-15 12:47:23,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811654078] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:47:23,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:47:23,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-02-15 12:47:23,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556466567] [2023-02-15 12:47:23,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:47:23,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-15 12:47:23,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:23,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-15 12:47:23,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-02-15 12:47:23,580 INFO L87 Difference]: Start difference. First operand 208 states and 273 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:24,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:24,346 INFO L93 Difference]: Finished difference Result 245 states and 308 transitions. [2023-02-15 12:47:24,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-15 12:47:24,347 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-15 12:47:24,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:24,347 INFO L225 Difference]: With dead ends: 245 [2023-02-15 12:47:24,347 INFO L226 Difference]: Without dead ends: 245 [2023-02-15 12:47:24,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2023-02-15 12:47:24,348 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 539 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:24,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 363 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 12:47:24,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-02-15 12:47:24,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 155. [2023-02-15 12:47:24,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 141 states have (on average 1.3687943262411348) internal successors, (193), 154 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:24,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 193 transitions. [2023-02-15 12:47:24,352 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 193 transitions. Word has length 23 [2023-02-15 12:47:24,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:24,352 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 193 transitions. [2023-02-15 12:47:24,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:24,353 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 193 transitions. [2023-02-15 12:47:24,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 12:47:24,353 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:24,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:24,367 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 (21)] Ended with exit code 0 [2023-02-15 12:47:24,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:24,567 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:24,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:24,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1547664583, now seen corresponding path program 1 times [2023-02-15 12:47:24,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:24,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64469883] [2023-02-15 12:47:24,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:24,568 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:24,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:24,569 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:24,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-02-15 12:47:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:24,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-15 12:47:24,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:24,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-15 12:47:24,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 12:47:24,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 12:47:24,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 12:47:24,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 12:47:24,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 12:47:24,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 12:47:24,700 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 12:47:24,701 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 12:47:24,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-02-15 12:47:24,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2023-02-15 12:47:24,876 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 12:47:24,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 26 [2023-02-15 12:47:24,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:47:24,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:47:25,026 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_365 (Array (_ BitVec 32) (_ BitVec 8)))) (bvslt |c_ULTIMATE.start_lis_~max~0#1| (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_365) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|))))) is different from false [2023-02-15 12:47:25,053 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 12:47:25,054 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 12:47:25,054 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 12:47:25,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 12:47:25,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 12:47:25,106 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 12:47:25,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 203 treesize of output 99 [2023-02-15 12:47:25,264 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2023-02-15 12:47:25,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 119 treesize of output 102 [2023-02-15 12:47:25,436 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 12:47:25,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 23 treesize of output 9 [2023-02-15 12:47:25,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:47:25,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:25,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64469883] [2023-02-15 12:47:25,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64469883] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:47:25,560 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:47:25,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-02-15 12:47:25,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120270032] [2023-02-15 12:47:25,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:47:25,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 12:47:25,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:25,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 12:47:25,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2023-02-15 12:47:25,561 INFO L87 Difference]: Start difference. First operand 155 states and 193 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:26,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:26,367 INFO L93 Difference]: Finished difference Result 197 states and 246 transitions. [2023-02-15 12:47:26,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 12:47:26,368 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-02-15 12:47:26,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:26,369 INFO L225 Difference]: With dead ends: 197 [2023-02-15 12:47:26,369 INFO L226 Difference]: Without dead ends: 197 [2023-02-15 12:47:26,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=127, Unknown=1, NotChecked=24, Total=210 [2023-02-15 12:47:26,369 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 93 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:26,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 292 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 253 Invalid, 0 Unknown, 54 Unchecked, 0.7s Time] [2023-02-15 12:47:26,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-02-15 12:47:26,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 179. [2023-02-15 12:47:26,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 165 states have (on average 1.4181818181818182) internal successors, (234), 178 states have internal predecessors, (234), 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) [2023-02-15 12:47:26,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 234 transitions. [2023-02-15 12:47:26,373 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 234 transitions. Word has length 26 [2023-02-15 12:47:26,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:26,373 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 234 transitions. [2023-02-15 12:47:26,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:26,374 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 234 transitions. [2023-02-15 12:47:26,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-15 12:47:26,374 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:26,374 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:26,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-02-15 12:47:26,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:26,575 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:26,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:26,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1090844182, now seen corresponding path program 2 times [2023-02-15 12:47:26,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:26,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995168556] [2023-02-15 12:47:26,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 12:47:26,576 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:26,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:26,576 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:26,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-02-15 12:47:26,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-15 12:47:26,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:47:26,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 12:47:26,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:26,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-02-15 12:47:26,698 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2023-02-15 12:47:26,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 38 [2023-02-15 12:47:26,724 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 12:47:26,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:47:26,725 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:26,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995168556] [2023-02-15 12:47:26,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995168556] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:47:26,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:47:26,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 12:47:26,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258219473] [2023-02-15 12:47:26,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:47:26,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 12:47:26,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:26,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 12:47:26,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 12:47:26,726 INFO L87 Difference]: Start difference. First operand 179 states and 234 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:26,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:26,825 INFO L93 Difference]: Finished difference Result 177 states and 224 transitions. [2023-02-15 12:47:26,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 12:47:26,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-15 12:47:26,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:26,827 INFO L225 Difference]: With dead ends: 177 [2023-02-15 12:47:26,827 INFO L226 Difference]: Without dead ends: 177 [2023-02-15 12:47:26,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 12:47:26,828 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 83 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:26,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 51 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:47:26,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-02-15 12:47:26,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2023-02-15 12:47:26,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 165 states have (on average 1.3575757575757577) internal successors, (224), 176 states have internal predecessors, (224), 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) [2023-02-15 12:47:26,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 224 transitions. [2023-02-15 12:47:26,831 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 224 transitions. Word has length 27 [2023-02-15 12:47:26,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:26,831 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 224 transitions. [2023-02-15 12:47:26,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:26,832 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 224 transitions. [2023-02-15 12:47:26,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-15 12:47:26,832 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:26,832 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:26,840 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 (23)] Ended with exit code 0 [2023-02-15 12:47:27,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:27,040 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:27,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:27,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1090844181, now seen corresponding path program 1 times [2023-02-15 12:47:27,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:27,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723144556] [2023-02-15 12:47:27,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:27,041 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:27,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:27,042 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:27,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-02-15 12:47:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:27,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-15 12:47:27,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:27,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 12:47:27,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 12:47:27,319 INFO L321 Elim1Store]: treesize reduction 35, result has 12.5 percent of original size [2023-02-15 12:47:27,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2023-02-15 12:47:27,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-15 12:47:27,656 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 12:47:27,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:47:27,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-15 12:47:28,314 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 12:47:28,314 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:28,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723144556] [2023-02-15 12:47:28,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723144556] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:47:28,314 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:47:28,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2023-02-15 12:47:28,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653322384] [2023-02-15 12:47:28,314 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:47:28,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 12:47:28,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:28,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 12:47:28,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-02-15 12:47:28,315 INFO L87 Difference]: Start difference. First operand 177 states and 224 transitions. Second operand has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:29,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:29,248 INFO L93 Difference]: Finished difference Result 243 states and 303 transitions. [2023-02-15 12:47:29,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 12:47:29,249 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-15 12:47:29,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:29,250 INFO L225 Difference]: With dead ends: 243 [2023-02-15 12:47:29,250 INFO L226 Difference]: Without dead ends: 243 [2023-02-15 12:47:29,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-02-15 12:47:29,251 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 270 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:29,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 198 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-15 12:47:29,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-02-15 12:47:29,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 182. [2023-02-15 12:47:29,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 170 states have (on average 1.3470588235294119) internal successors, (229), 181 states have internal predecessors, (229), 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) [2023-02-15 12:47:29,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 229 transitions. [2023-02-15 12:47:29,255 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 229 transitions. Word has length 27 [2023-02-15 12:47:29,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:29,255 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 229 transitions. [2023-02-15 12:47:29,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:29,256 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 229 transitions. [2023-02-15 12:47:29,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 12:47:29,256 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:29,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:29,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-02-15 12:47:29,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:29,461 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:29,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:29,461 INFO L85 PathProgramCache]: Analyzing trace with hash -397297604, now seen corresponding path program 1 times [2023-02-15 12:47:29,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:29,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66314354] [2023-02-15 12:47:29,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:29,462 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:29,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:29,463 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:29,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-02-15 12:47:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:29,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 12:47:29,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:35,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 12:47:35,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:47:35,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:35,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66314354] [2023-02-15 12:47:35,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66314354] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:47:35,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:47:35,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 12:47:35,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842504278] [2023-02-15 12:47:35,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:47:35,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 12:47:35,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:35,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 12:47:35,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2023-02-15 12:47:35,839 INFO L87 Difference]: Start difference. First operand 182 states and 229 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:37,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 12:47:39,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 12:47:41,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 12:47:43,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 12:47:45,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 12:47:47,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 12:47:50,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 12:47:52,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 12:47:54,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 12:47:54,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:54,378 INFO L93 Difference]: Finished difference Result 201 states and 247 transitions. [2023-02-15 12:47:54,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 12:47:54,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-15 12:47:54,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:54,379 INFO L225 Difference]: With dead ends: 201 [2023-02-15 12:47:54,379 INFO L226 Difference]: Without dead ends: 176 [2023-02-15 12:47:54,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2023-02-15 12:47:54,380 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:54,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 252 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 12 Unknown, 0 Unchecked, 18.5s Time] [2023-02-15 12:47:54,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-02-15 12:47:54,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2023-02-15 12:47:54,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 164 states have (on average 1.353658536585366) internal successors, (222), 175 states have internal predecessors, (222), 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) [2023-02-15 12:47:54,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 222 transitions. [2023-02-15 12:47:54,383 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 222 transitions. Word has length 28 [2023-02-15 12:47:54,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:54,384 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 222 transitions. [2023-02-15 12:47:54,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:54,384 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 222 transitions. [2023-02-15 12:47:54,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 12:47:54,384 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:54,384 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:54,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-02-15 12:47:54,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:54,594 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:54,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:54,595 INFO L85 PathProgramCache]: Analyzing trace with hash 543568764, now seen corresponding path program 1 times [2023-02-15 12:47:54,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:54,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208507532] [2023-02-15 12:47:54,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:54,595 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:54,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:54,596 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:54,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-02-15 12:47:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:54,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 12:47:54,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:54,785 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 12:47:54,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:47:54,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:54,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208507532] [2023-02-15 12:47:54,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208507532] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:47:54,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:47:54,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 12:47:54,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842039177] [2023-02-15 12:47:54,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:47:54,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 12:47:54,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:54,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 12:47:54,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-15 12:47:54,787 INFO L87 Difference]: Start difference. First operand 176 states and 222 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:55,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:55,080 INFO L93 Difference]: Finished difference Result 247 states and 311 transitions. [2023-02-15 12:47:55,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 12:47:55,080 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-15 12:47:55,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:55,081 INFO L225 Difference]: With dead ends: 247 [2023-02-15 12:47:55,081 INFO L226 Difference]: Without dead ends: 247 [2023-02-15 12:47:55,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2023-02-15 12:47:55,082 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 223 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:55,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 107 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 12:47:55,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-02-15 12:47:55,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 179. [2023-02-15 12:47:55,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 167 states have (on average 1.347305389221557) internal successors, (225), 178 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:55,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 225 transitions. [2023-02-15 12:47:55,085 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 225 transitions. Word has length 28 [2023-02-15 12:47:55,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:55,086 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 225 transitions. [2023-02-15 12:47:55,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:55,086 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 225 transitions. [2023-02-15 12:47:55,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 12:47:55,086 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:55,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:55,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-02-15 12:47:55,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:55,297 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:47:55,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:55,297 INFO L85 PathProgramCache]: Analyzing trace with hash -335257990, now seen corresponding path program 1 times [2023-02-15 12:47:55,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:55,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580063667] [2023-02-15 12:47:55,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:55,298 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:55,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:55,300 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:55,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-02-15 12:47:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:55,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 12:47:55,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:48:01,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 12:48:01,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:48:01,669 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:48:01,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580063667] [2023-02-15 12:48:01,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580063667] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:48:01,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:48:01,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 12:48:01,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628451869] [2023-02-15 12:48:01,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:48:01,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 12:48:01,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:48:01,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 12:48:01,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2023-02-15 12:48:01,670 INFO L87 Difference]: Start difference. First operand 179 states and 225 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:03,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 12:48:05,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 12:48:07,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 12:48:09,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 12:48:11,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 12:48:13,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 12:48:15,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 12:48:17,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 12:48:19,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 12:48:19,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:48:19,898 INFO L93 Difference]: Finished difference Result 178 states and 224 transitions. [2023-02-15 12:48:19,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 12:48:19,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-15 12:48:19,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:48:19,901 INFO L225 Difference]: With dead ends: 178 [2023-02-15 12:48:19,901 INFO L226 Difference]: Without dead ends: 159 [2023-02-15 12:48:19,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2023-02-15 12:48:19,901 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 30 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2023-02-15 12:48:19,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 157 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 9 Unknown, 0 Unchecked, 18.2s Time] [2023-02-15 12:48:19,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-02-15 12:48:19,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-02-15 12:48:19,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 148 states have (on average 1.364864864864865) internal successors, (202), 158 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:19,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 202 transitions. [2023-02-15 12:48:19,904 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 202 transitions. Word has length 28 [2023-02-15 12:48:19,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:48:19,904 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 202 transitions. [2023-02-15 12:48:19,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:19,904 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 202 transitions. [2023-02-15 12:48:19,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-15 12:48:19,905 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:48:19,905 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:48:19,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-02-15 12:48:20,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:48:20,112 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:48:20,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:48:20,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1430352431, now seen corresponding path program 1 times [2023-02-15 12:48:20,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:48:20,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894940290] [2023-02-15 12:48:20,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:48:20,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:48:20,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:48:20,113 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:48:20,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-02-15 12:48:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:48:20,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 12:48:20,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:48:20,303 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 12:48:20,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:48:20,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2023-02-15 12:48:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 12:48:20,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:48:20,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894940290] [2023-02-15 12:48:20,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894940290] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:48:20,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:48:20,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-02-15 12:48:20,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365020240] [2023-02-15 12:48:20,589 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:48:20,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 12:48:20,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:48:20,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 12:48:20,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-02-15 12:48:20,590 INFO L87 Difference]: Start difference. First operand 159 states and 202 transitions. Second operand has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:21,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:48:21,470 INFO L93 Difference]: Finished difference Result 389 states and 502 transitions. [2023-02-15 12:48:21,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 12:48:21,471 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-02-15 12:48:21,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:48:21,472 INFO L225 Difference]: With dead ends: 389 [2023-02-15 12:48:21,472 INFO L226 Difference]: Without dead ends: 389 [2023-02-15 12:48:21,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-02-15 12:48:21,473 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 521 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-15 12:48:21,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 166 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-15 12:48:21,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-02-15 12:48:21,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 165. [2023-02-15 12:48:21,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 154 states have (on average 1.3571428571428572) internal successors, (209), 164 states have internal predecessors, (209), 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) [2023-02-15 12:48:21,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 209 transitions. [2023-02-15 12:48:21,477 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 209 transitions. Word has length 31 [2023-02-15 12:48:21,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:48:21,477 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 209 transitions. [2023-02-15 12:48:21,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:21,477 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 209 transitions. [2023-02-15 12:48:21,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 12:48:21,477 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:48:21,478 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:48:21,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-02-15 12:48:21,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:48:21,678 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:48:21,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:48:21,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1391261449, now seen corresponding path program 1 times [2023-02-15 12:48:21,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:48:21,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201916254] [2023-02-15 12:48:21,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:48:21,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:48:21,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:48:21,681 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:48:21,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-02-15 12:48:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:48:21,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 12:48:21,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:48:21,808 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 12:48:21,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:48:21,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:48:21,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201916254] [2023-02-15 12:48:21,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201916254] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:48:21,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:48:21,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 12:48:21,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405507543] [2023-02-15 12:48:21,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:48:21,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 12:48:21,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:48:21,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 12:48:21,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 12:48:21,809 INFO L87 Difference]: Start difference. First operand 165 states and 209 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:21,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:48:21,820 INFO L93 Difference]: Finished difference Result 165 states and 206 transitions. [2023-02-15 12:48:21,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 12:48:21,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-02-15 12:48:21,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:48:21,821 INFO L225 Difference]: With dead ends: 165 [2023-02-15 12:48:21,821 INFO L226 Difference]: Without dead ends: 165 [2023-02-15 12:48:21,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 12:48:21,822 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 12:48:21,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 12:48:21,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-02-15 12:48:21,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2023-02-15 12:48:21,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 155 states have (on average 1.3290322580645162) internal successors, (206), 164 states have internal predecessors, (206), 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) [2023-02-15 12:48:21,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 206 transitions. [2023-02-15 12:48:21,825 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 206 transitions. Word has length 32 [2023-02-15 12:48:21,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:48:21,826 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 206 transitions. [2023-02-15 12:48:21,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:21,826 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 206 transitions. [2023-02-15 12:48:21,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 12:48:21,826 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:48:21,827 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:48:21,839 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 (29)] Forceful destruction successful, exit code 0 [2023-02-15 12:48:22,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:48:22,027 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:48:22,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:48:22,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1391252418, now seen corresponding path program 1 times [2023-02-15 12:48:22,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:48:22,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409672303] [2023-02-15 12:48:22,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:48:22,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:48:22,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:48:22,029 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:48:22,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-02-15 12:48:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:48:22,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 12:48:22,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:48:22,245 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 12:48:22,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:48:22,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-02-15 12:48:22,597 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 12:48:22,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:48:22,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409672303] [2023-02-15 12:48:22,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409672303] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:48:22,597 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:48:22,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-02-15 12:48:22,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044704879] [2023-02-15 12:48:22,598 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:48:22,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 12:48:22,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:48:22,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 12:48:22,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-02-15 12:48:22,598 INFO L87 Difference]: Start difference. First operand 165 states and 206 transitions. Second operand has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:23,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:48:23,669 INFO L93 Difference]: Finished difference Result 626 states and 789 transitions. [2023-02-15 12:48:23,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-15 12:48:23,670 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-02-15 12:48:23,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:48:23,671 INFO L225 Difference]: With dead ends: 626 [2023-02-15 12:48:23,671 INFO L226 Difference]: Without dead ends: 626 [2023-02-15 12:48:23,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2023-02-15 12:48:23,672 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 935 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 12:48:23,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 161 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-15 12:48:23,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-02-15 12:48:23,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 226. [2023-02-15 12:48:23,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 217 states have (on average 1.3502304147465438) internal successors, (293), 225 states have internal predecessors, (293), 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) [2023-02-15 12:48:23,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 293 transitions. [2023-02-15 12:48:23,678 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 293 transitions. Word has length 32 [2023-02-15 12:48:23,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:48:23,678 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 293 transitions. [2023-02-15 12:48:23,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:23,679 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 293 transitions. [2023-02-15 12:48:23,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 12:48:23,679 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:48:23,679 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:48:23,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2023-02-15 12:48:23,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:48:23,889 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:48:23,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:48:23,890 INFO L85 PathProgramCache]: Analyzing trace with hash 155161166, now seen corresponding path program 3 times [2023-02-15 12:48:23,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:48:23,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244638927] [2023-02-15 12:48:23,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 12:48:23,890 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:48:23,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:48:23,891 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:48:23,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-02-15 12:48:24,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-15 12:48:24,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:48:24,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-15 12:48:24,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:48:24,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 12:48:24,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 12:48:24,247 INFO L321 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2023-02-15 12:48:24,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 30 [2023-02-15 12:48:24,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-15 12:48:24,553 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:48:24,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:48:25,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-15 12:48:25,961 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:48:25,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:48:25,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244638927] [2023-02-15 12:48:25,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244638927] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:48:25,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:48:25,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2023-02-15 12:48:25,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704967017] [2023-02-15 12:48:25,962 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:48:25,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-15 12:48:25,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:48:25,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-15 12:48:25,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2023-02-15 12:48:25,964 INFO L87 Difference]: Start difference. First operand 226 states and 293 transitions. Second operand has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:29,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:48:29,721 INFO L93 Difference]: Finished difference Result 346 states and 437 transitions. [2023-02-15 12:48:29,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-15 12:48:29,722 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-02-15 12:48:29,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:48:29,723 INFO L225 Difference]: With dead ends: 346 [2023-02-15 12:48:29,723 INFO L226 Difference]: Without dead ends: 324 [2023-02-15 12:48:29,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=361, Invalid=1121, Unknown=0, NotChecked=0, Total=1482 [2023-02-15 12:48:29,725 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 285 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-02-15 12:48:29,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 331 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-02-15 12:48:29,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-02-15 12:48:29,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 301. [2023-02-15 12:48:29,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 292 states have (on average 1.3184931506849316) internal successors, (385), 300 states have internal predecessors, (385), 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) [2023-02-15 12:48:29,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 385 transitions. [2023-02-15 12:48:29,730 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 385 transitions. Word has length 32 [2023-02-15 12:48:29,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:48:29,730 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 385 transitions. [2023-02-15 12:48:29,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:29,730 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 385 transitions. [2023-02-15 12:48:29,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-15 12:48:29,731 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:48:29,731 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] [2023-02-15 12:48:29,741 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 (31)] Ended with exit code 0 [2023-02-15 12:48:29,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:48:29,941 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:48:29,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:48:29,942 INFO L85 PathProgramCache]: Analyzing trace with hash 646893308, now seen corresponding path program 1 times [2023-02-15 12:48:29,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:48:29,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200599628] [2023-02-15 12:48:29,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:48:29,942 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:48:29,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:48:29,943 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:48:29,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-02-15 12:48:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:48:30,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 12:48:30,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:48:30,097 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 12:48:30,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:48:30,136 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 12:48:30,137 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:48:30,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200599628] [2023-02-15 12:48:30,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200599628] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:48:30,137 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:48:30,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-15 12:48:30,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896384156] [2023-02-15 12:48:30,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:48:30,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 12:48:30,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:48:30,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 12:48:30,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-15 12:48:30,139 INFO L87 Difference]: Start difference. First operand 301 states and 385 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:30,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:48:30,332 INFO L93 Difference]: Finished difference Result 278 states and 350 transitions. [2023-02-15 12:48:30,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 12:48:30,333 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-02-15 12:48:30,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:48:30,334 INFO L225 Difference]: With dead ends: 278 [2023-02-15 12:48:30,334 INFO L226 Difference]: Without dead ends: 273 [2023-02-15 12:48:30,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-15 12:48:30,335 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 45 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 12:48:30,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 128 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 12:48:30,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-02-15 12:48:30,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 265. [2023-02-15 12:48:30,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 256 states have (on average 1.30859375) internal successors, (335), 264 states have internal predecessors, (335), 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) [2023-02-15 12:48:30,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 335 transitions. [2023-02-15 12:48:30,339 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 335 transitions. Word has length 35 [2023-02-15 12:48:30,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:48:30,339 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 335 transitions. [2023-02-15 12:48:30,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:30,340 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 335 transitions. [2023-02-15 12:48:30,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-15 12:48:30,340 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:48:30,340 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:48:30,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-02-15 12:48:30,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:48:30,550 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:48:30,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:48:30,551 INFO L85 PathProgramCache]: Analyzing trace with hash 770896954, now seen corresponding path program 2 times [2023-02-15 12:48:30,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:48:30,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65347537] [2023-02-15 12:48:30,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 12:48:30,551 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:48:30,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:48:30,552 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:48:30,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-02-15 12:48:30,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-15 12:48:30,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:48:30,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 12:48:30,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:48:30,671 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-02-15 12:48:30,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 15 [2023-02-15 12:48:30,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-15 12:48:30,927 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-02-15 12:48:30,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:48:31,891 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 12:48:31,893 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-02-15 12:48:31,893 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:48:31,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65347537] [2023-02-15 12:48:31,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65347537] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:48:31,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:48:31,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2023-02-15 12:48:31,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724341208] [2023-02-15 12:48:31,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:48:31,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 12:48:31,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:48:31,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 12:48:31,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-15 12:48:31,894 INFO L87 Difference]: Start difference. First operand 265 states and 335 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:32,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:48:32,371 INFO L93 Difference]: Finished difference Result 268 states and 334 transitions. [2023-02-15 12:48:32,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 12:48:32,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-02-15 12:48:32,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:48:32,373 INFO L225 Difference]: With dead ends: 268 [2023-02-15 12:48:32,373 INFO L226 Difference]: Without dead ends: 243 [2023-02-15 12:48:32,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-02-15 12:48:32,373 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 101 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 12:48:32,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 64 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 12:48:32,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-02-15 12:48:32,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 215. [2023-02-15 12:48:32,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 208 states have (on average 1.3173076923076923) internal successors, (274), 214 states have internal predecessors, (274), 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) [2023-02-15 12:48:32,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 274 transitions. [2023-02-15 12:48:32,377 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 274 transitions. Word has length 37 [2023-02-15 12:48:32,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:48:32,377 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 274 transitions. [2023-02-15 12:48:32,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:32,377 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 274 transitions. [2023-02-15 12:48:32,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-15 12:48:32,377 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:48:32,377 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:48:32,387 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 (33)] Forceful destruction successful, exit code 0 [2023-02-15 12:48:32,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:48:32,578 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:48:32,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:48:32,578 INFO L85 PathProgramCache]: Analyzing trace with hash 601007766, now seen corresponding path program 4 times [2023-02-15 12:48:32,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:48:32,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259082823] [2023-02-15 12:48:32,579 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 12:48:32,579 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:48:32,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:48:32,580 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:48:32,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-02-15 12:48:32,719 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 12:48:32,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:48:32,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-15 12:48:32,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:48:32,823 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-02-15 12:48:32,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 17 [2023-02-15 12:48:33,011 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 24 treesize of output 18 [2023-02-15 12:48:33,060 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 12:48:33,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:48:33,788 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 12:48:33,788 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:48:33,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259082823] [2023-02-15 12:48:33,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259082823] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:48:33,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:48:33,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2023-02-15 12:48:33,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651250760] [2023-02-15 12:48:33,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:48:33,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-15 12:48:33,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:48:33,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-15 12:48:33,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2023-02-15 12:48:33,794 INFO L87 Difference]: Start difference. First operand 215 states and 274 transitions. Second operand has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:38,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:48:38,873 INFO L93 Difference]: Finished difference Result 552 states and 710 transitions. [2023-02-15 12:48:38,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-15 12:48:38,874 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-02-15 12:48:38,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:48:38,875 INFO L225 Difference]: With dead ends: 552 [2023-02-15 12:48:38,875 INFO L226 Difference]: Without dead ends: 510 [2023-02-15 12:48:38,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=449, Invalid=1531, Unknown=0, NotChecked=0, Total=1980 [2023-02-15 12:48:38,876 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 931 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-02-15 12:48:38,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 510 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-02-15 12:48:38,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2023-02-15 12:48:38,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 370. [2023-02-15 12:48:38,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 363 states have (on average 1.3388429752066116) internal successors, (486), 369 states have internal predecessors, (486), 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) [2023-02-15 12:48:38,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 486 transitions. [2023-02-15 12:48:38,882 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 486 transitions. Word has length 40 [2023-02-15 12:48:38,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:48:38,882 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 486 transitions. [2023-02-15 12:48:38,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:38,882 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 486 transitions. [2023-02-15 12:48:38,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-15 12:48:38,883 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:48:38,883 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:48:38,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2023-02-15 12:48:39,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:48:39,094 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:48:39,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:48:39,094 INFO L85 PathProgramCache]: Analyzing trace with hash -528832743, now seen corresponding path program 5 times [2023-02-15 12:48:39,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:48:39,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751779164] [2023-02-15 12:48:39,094 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 12:48:39,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:48:39,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:48:39,095 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:48:39,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-02-15 12:48:39,373 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-02-15 12:48:39,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:48:39,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-15 12:48:39,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:48:39,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 12:48:39,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-02-15 12:48:39,801 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 21 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:48:39,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:48:40,589 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 22 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:48:40,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:48:40,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751779164] [2023-02-15 12:48:40,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751779164] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:48:40,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:48:40,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2023-02-15 12:48:40,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188279103] [2023-02-15 12:48:40,590 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:48:40,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-15 12:48:40,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:48:40,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-15 12:48:40,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2023-02-15 12:48:40,591 INFO L87 Difference]: Start difference. First operand 370 states and 486 transitions. Second operand has 28 states, 28 states have (on average 2.892857142857143) internal successors, (81), 28 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:42,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:48:42,841 INFO L93 Difference]: Finished difference Result 776 states and 1021 transitions. [2023-02-15 12:48:42,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-15 12:48:42,842 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.892857142857143) internal successors, (81), 28 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-02-15 12:48:42,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:48:42,843 INFO L225 Difference]: With dead ends: 776 [2023-02-15 12:48:42,844 INFO L226 Difference]: Without dead ends: 771 [2023-02-15 12:48:42,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=356, Invalid=1536, Unknown=0, NotChecked=0, Total=1892 [2023-02-15 12:48:42,844 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1000 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-02-15 12:48:42,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 975 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1567 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-02-15 12:48:42,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2023-02-15 12:48:42,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 637. [2023-02-15 12:48:42,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 630 states have (on average 1.3444444444444446) internal successors, (847), 636 states have internal predecessors, (847), 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) [2023-02-15 12:48:42,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 847 transitions. [2023-02-15 12:48:42,854 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 847 transitions. Word has length 44 [2023-02-15 12:48:42,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:48:42,854 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 847 transitions. [2023-02-15 12:48:42,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.892857142857143) internal successors, (81), 28 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:42,855 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 847 transitions. [2023-02-15 12:48:42,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-15 12:48:42,855 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:48:42,855 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:48:42,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-02-15 12:48:43,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:48:43,067 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:48:43,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:48:43,068 INFO L85 PathProgramCache]: Analyzing trace with hash -484234273, now seen corresponding path program 1 times [2023-02-15 12:48:43,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:48:43,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910341800] [2023-02-15 12:48:43,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:48:43,069 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:48:43,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:48:43,070 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:48:43,072 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 (36)] Waiting until timeout for monitored process [2023-02-15 12:48:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:48:43,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-15 12:48:43,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:48:43,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 12:48:43,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 12:48:43,432 INFO L321 Elim1Store]: treesize reduction 35, result has 12.5 percent of original size [2023-02-15 12:48:43,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2023-02-15 12:48:43,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-15 12:48:44,069 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 12:48:44,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:48:44,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-15 12:48:45,831 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 12:48:45,831 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:48:45,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910341800] [2023-02-15 12:48:45,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910341800] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:48:45,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:48:45,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-02-15 12:48:45,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923239330] [2023-02-15 12:48:45,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:48:45,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-15 12:48:45,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:48:45,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-15 12:48:45,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-02-15 12:48:45,833 INFO L87 Difference]: Start difference. First operand 637 states and 847 transitions. Second operand has 18 states, 17 states have (on average 4.235294117647059) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:47,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:48:47,274 INFO L93 Difference]: Finished difference Result 753 states and 1001 transitions. [2023-02-15 12:48:47,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 12:48:47,275 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.235294117647059) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-02-15 12:48:47,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:48:47,276 INFO L225 Difference]: With dead ends: 753 [2023-02-15 12:48:47,276 INFO L226 Difference]: Without dead ends: 753 [2023-02-15 12:48:47,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2023-02-15 12:48:47,277 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 503 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-15 12:48:47,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 186 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-15 12:48:47,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-02-15 12:48:47,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 645. [2023-02-15 12:48:47,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 638 states have (on average 1.3401253918495297) internal successors, (855), 644 states have internal predecessors, (855), 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) [2023-02-15 12:48:47,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 855 transitions. [2023-02-15 12:48:47,285 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 855 transitions. Word has length 45 [2023-02-15 12:48:47,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:48:47,286 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 855 transitions. [2023-02-15 12:48:47,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.235294117647059) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:47,286 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 855 transitions. [2023-02-15 12:48:47,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-15 12:48:47,287 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:48:47,287 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1] [2023-02-15 12:48:47,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2023-02-15 12:48:47,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:48:47,498 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:48:47,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:48:47,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1048882662, now seen corresponding path program 3 times [2023-02-15 12:48:47,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:48:47,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652264791] [2023-02-15 12:48:47,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 12:48:47,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:48:47,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:48:47,499 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:48:47,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-02-15 12:48:47,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-15 12:48:47,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:48:47,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-15 12:48:47,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:48:47,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 12:48:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:48:48,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:48:50,578 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:48:50,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:48:50,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652264791] [2023-02-15 12:48:50,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652264791] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:48:50,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:48:50,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2023-02-15 12:48:50,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418106528] [2023-02-15 12:48:50,579 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:48:50,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-02-15 12:48:50,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:48:50,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-02-15 12:48:50,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2023-02-15 12:48:50,580 INFO L87 Difference]: Start difference. First operand 645 states and 855 transitions. Second operand has 30 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:49:10,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:49:10,680 INFO L93 Difference]: Finished difference Result 1888 states and 2479 transitions. [2023-02-15 12:49:10,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-02-15 12:49:10,681 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-02-15 12:49:10,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:49:10,685 INFO L225 Difference]: With dead ends: 1888 [2023-02-15 12:49:10,685 INFO L226 Difference]: Without dead ends: 1888 [2023-02-15 12:49:10,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=1194, Invalid=2588, Unknown=0, NotChecked=0, Total=3782 [2023-02-15 12:49:10,686 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 2543 mSDsluCounter, 2632 mSDsCounter, 0 mSdLazyCounter, 2674 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2543 SdHoareTripleChecker+Valid, 2831 SdHoareTripleChecker+Invalid, 2738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-02-15 12:49:10,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2543 Valid, 2831 Invalid, 2738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2674 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-02-15 12:49:10,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2023-02-15 12:49:10,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 693. [2023-02-15 12:49:10,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 686 states have (on average 1.3338192419825072) internal successors, (915), 692 states have internal predecessors, (915), 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) [2023-02-15 12:49:10,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 915 transitions. [2023-02-15 12:49:10,698 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 915 transitions. Word has length 46 [2023-02-15 12:49:10,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:49:10,698 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 915 transitions. [2023-02-15 12:49:10,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:49:10,699 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 915 transitions. [2023-02-15 12:49:10,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-15 12:49:10,699 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:49:10,699 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:49:10,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-02-15 12:49:10,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:49:10,910 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:49:10,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:49:10,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1686115654, now seen corresponding path program 1 times [2023-02-15 12:49:10,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:49:10,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429958391] [2023-02-15 12:49:10,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:49:10,911 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:49:10,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:49:10,911 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:49:10,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-02-15 12:49:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:49:11,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 12:49:11,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:49:11,244 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 12:49:11,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:49:11,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2023-02-15 12:49:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 12:49:11,978 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:49:11,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429958391] [2023-02-15 12:49:11,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429958391] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:49:11,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:49:11,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-02-15 12:49:11,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188950859] [2023-02-15 12:49:11,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:49:11,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-15 12:49:11,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:49:11,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-15 12:49:11,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2023-02-15 12:49:11,979 INFO L87 Difference]: Start difference. First operand 693 states and 915 transitions. Second operand has 18 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 18 states have internal predecessors, (67), 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) [2023-02-15 12:49:19,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:49:19,483 INFO L93 Difference]: Finished difference Result 1689 states and 2241 transitions. [2023-02-15 12:49:19,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-15 12:49:19,484 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-02-15 12:49:19,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:49:19,487 INFO L225 Difference]: With dead ends: 1689 [2023-02-15 12:49:19,488 INFO L226 Difference]: Without dead ends: 1689 [2023-02-15 12:49:19,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=302, Invalid=1030, Unknown=0, NotChecked=0, Total=1332 [2023-02-15 12:49:19,488 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 1185 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-02-15 12:49:19,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1185 Valid, 339 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-02-15 12:49:19,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2023-02-15 12:49:19,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 900. [2023-02-15 12:49:19,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 893 states have (on average 1.347144456886898) internal successors, (1203), 899 states have internal predecessors, (1203), 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) [2023-02-15 12:49:19,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1203 transitions. [2023-02-15 12:49:19,503 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1203 transitions. Word has length 46 [2023-02-15 12:49:19,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:49:19,504 INFO L495 AbstractCegarLoop]: Abstraction has 900 states and 1203 transitions. [2023-02-15 12:49:19,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 18 states have internal predecessors, (67), 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) [2023-02-15 12:49:19,504 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1203 transitions. [2023-02-15 12:49:19,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-15 12:49:19,504 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:49:19,505 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:49:19,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-02-15 12:49:19,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:49:19,716 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:49:19,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:49:19,717 INFO L85 PathProgramCache]: Analyzing trace with hash -2126360568, now seen corresponding path program 1 times [2023-02-15 12:49:19,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:49:19,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268231254] [2023-02-15 12:49:19,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:49:19,717 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:49:19,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:49:19,718 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:49:19,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-02-15 12:49:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:49:19,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 12:49:19,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:49:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-15 12:49:20,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:49:20,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-02-15 12:49:20,419 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-15 12:49:20,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:49:20,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268231254] [2023-02-15 12:49:20,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268231254] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:49:20,420 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:49:20,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-02-15 12:49:20,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118031432] [2023-02-15 12:49:20,420 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:49:20,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 12:49:20,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:49:20,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 12:49:20,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-02-15 12:49:20,421 INFO L87 Difference]: Start difference. First operand 900 states and 1203 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:49:21,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:49:21,104 INFO L93 Difference]: Finished difference Result 1116 states and 1410 transitions. [2023-02-15 12:49:21,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 12:49:21,105 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-02-15 12:49:21,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:49:21,108 INFO L225 Difference]: With dead ends: 1116 [2023-02-15 12:49:21,108 INFO L226 Difference]: Without dead ends: 1116 [2023-02-15 12:49:21,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=336, Unknown=0, NotChecked=0, Total=506 [2023-02-15 12:49:21,108 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 418 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 12:49:21,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 146 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 12:49:21,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2023-02-15 12:49:21,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 900. [2023-02-15 12:49:21,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 893 states have (on average 1.3012318029115342) internal successors, (1162), 899 states have internal predecessors, (1162), 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) [2023-02-15 12:49:21,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1162 transitions. [2023-02-15 12:49:21,127 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1162 transitions. Word has length 46 [2023-02-15 12:49:21,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:49:21,127 INFO L495 AbstractCegarLoop]: Abstraction has 900 states and 1162 transitions. [2023-02-15 12:49:21,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:49:21,128 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1162 transitions. [2023-02-15 12:49:21,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-15 12:49:21,128 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:49:21,129 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:49:21,139 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 (39)] Ended with exit code 0 [2023-02-15 12:49:21,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:49:21,339 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:49:21,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:49:21,339 INFO L85 PathProgramCache]: Analyzing trace with hash 274247196, now seen corresponding path program 6 times [2023-02-15 12:49:21,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:49:21,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693698834] [2023-02-15 12:49:21,340 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 12:49:21,340 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:49:21,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:49:21,341 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:49:21,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-02-15 12:49:21,599 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-02-15 12:49:21,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:49:21,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 12:49:21,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:49:21,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 12:49:21,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-02-15 12:49:21,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-15 12:49:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-15 12:49:21,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:49:23,083 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 12:49:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-15 12:49:23,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:49:23,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693698834] [2023-02-15 12:49:23,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693698834] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:49:23,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:49:23,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-02-15 12:49:23,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507734806] [2023-02-15 12:49:23,245 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:49:23,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 12:49:23,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:49:23,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 12:49:23,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-02-15 12:49:23,246 INFO L87 Difference]: Start difference. First operand 900 states and 1162 transitions. Second operand has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:49:28,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 12:49:30,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 12:49:32,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 12:49:34,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 12:49:37,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 12:49:40,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 12:49:42,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 12:49:45,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 12:49:47,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 12:49:50,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 12:49:51,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 12:49:54,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 12:49:56,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 12:49:58,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 12:50:00,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 12:50:01,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:50:01,615 INFO L93 Difference]: Finished difference Result 2311 states and 2975 transitions. [2023-02-15 12:50:01,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-15 12:50:01,616 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-02-15 12:50:01,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:50:01,620 INFO L225 Difference]: With dead ends: 2311 [2023-02-15 12:50:01,620 INFO L226 Difference]: Without dead ends: 2282 [2023-02-15 12:50:01,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=682, Invalid=1868, Unknown=0, NotChecked=0, Total=2550 [2023-02-15 12:50:01,621 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 1221 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 138 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.7s IncrementalHoareTripleChecker+Time [2023-02-15 12:50:01,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 680 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1455 Invalid, 4 Unknown, 0 Unchecked, 33.7s Time] [2023-02-15 12:50:01,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2023-02-15 12:50:01,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 1690. [2023-02-15 12:50:01,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1683 states have (on average 1.3113487819370173) internal successors, (2207), 1689 states have internal predecessors, (2207), 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) [2023-02-15 12:50:01,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2207 transitions. [2023-02-15 12:50:01,654 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2207 transitions. Word has length 48 [2023-02-15 12:50:01,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:50:01,654 INFO L495 AbstractCegarLoop]: Abstraction has 1690 states and 2207 transitions. [2023-02-15 12:50:01,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:50:01,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2207 transitions. [2023-02-15 12:50:01,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-15 12:50:01,655 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:50:01,655 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:50:01,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2023-02-15 12:50:01,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:50:01,867 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:50:01,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:50:01,868 INFO L85 PathProgramCache]: Analyzing trace with hash 971260211, now seen corresponding path program 2 times [2023-02-15 12:50:01,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:50:01,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588134098] [2023-02-15 12:50:01,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 12:50:01,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:50:01,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:50:01,870 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:50:01,871 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 (41)] Waiting until timeout for monitored process [2023-02-15 12:50:01,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-15 12:50:01,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:50:01,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-15 12:50:01,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:50:01,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 12:50:01,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-02-15 12:50:02,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 12:50:02,118 INFO L321 Elim1Store]: treesize reduction 28, result has 34.9 percent of original size [2023-02-15 12:50:02,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-02-15 12:50:02,127 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-02-15 12:50:02,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-02-15 12:50:02,347 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-02-15 12:50:02,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:50:07,343 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 12:50:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-02-15 12:50:09,518 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:50:09,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588134098] [2023-02-15 12:50:09,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588134098] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:50:09,519 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:50:09,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-02-15 12:50:09,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974538122] [2023-02-15 12:50:09,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:50:09,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 12:50:09,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:50:09,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 12:50:09,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=101, Unknown=1, NotChecked=0, Total=132 [2023-02-15 12:50:09,520 INFO L87 Difference]: Start difference. First operand 1690 states and 2207 transitions. Second operand has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:50:10,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:50:10,211 INFO L93 Difference]: Finished difference Result 1723 states and 2207 transitions. [2023-02-15 12:50:10,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 12:50:10,212 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-02-15 12:50:10,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:50:10,216 INFO L225 Difference]: With dead ends: 1723 [2023-02-15 12:50:10,216 INFO L226 Difference]: Without dead ends: 1723 [2023-02-15 12:50:10,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=76, Invalid=163, Unknown=1, NotChecked=0, Total=240 [2023-02-15 12:50:10,216 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 299 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 12:50:10,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 46 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 12:50:10,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2023-02-15 12:50:10,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1681. [2023-02-15 12:50:10,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1675 states have (on average 1.2907462686567164) internal successors, (2162), 1680 states have internal predecessors, (2162), 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) [2023-02-15 12:50:10,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2162 transitions. [2023-02-15 12:50:10,239 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2162 transitions. Word has length 48 [2023-02-15 12:50:10,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:50:10,239 INFO L495 AbstractCegarLoop]: Abstraction has 1681 states and 2162 transitions. [2023-02-15 12:50:10,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:50:10,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2162 transitions. [2023-02-15 12:50:10,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-15 12:50:10,240 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:50:10,241 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:50:10,253 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 (41)] Forceful destruction successful, exit code 0 [2023-02-15 12:50:10,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:50:10,449 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:50:10,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:50:10,450 INFO L85 PathProgramCache]: Analyzing trace with hash 2107734792, now seen corresponding path program 2 times [2023-02-15 12:50:10,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:50:10,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786189535] [2023-02-15 12:50:10,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 12:50:10,450 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:50:10,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:50:10,451 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:50:10,452 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 (42)] Waiting until timeout for monitored process [2023-02-15 12:50:10,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 12:50:10,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:50:10,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 12:50:10,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:50:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-02-15 12:50:10,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:50:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-02-15 12:50:11,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:50:11,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786189535] [2023-02-15 12:50:11,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786189535] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:50:11,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:50:11,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-02-15 12:50:11,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035960928] [2023-02-15 12:50:11,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:50:11,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 12:50:11,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:50:11,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 12:50:11,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-02-15 12:50:11,026 INFO L87 Difference]: Start difference. First operand 1681 states and 2162 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:50:11,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:50:11,834 INFO L93 Difference]: Finished difference Result 1743 states and 2196 transitions. [2023-02-15 12:50:11,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 12:50:11,835 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-02-15 12:50:11,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:50:11,839 INFO L225 Difference]: With dead ends: 1743 [2023-02-15 12:50:11,839 INFO L226 Difference]: Without dead ends: 1743 [2023-02-15 12:50:11,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-02-15 12:50:11,840 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 151 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 12:50:11,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 226 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-15 12:50:11,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2023-02-15 12:50:11,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1689. [2023-02-15 12:50:11,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1683 states have (on average 1.2685680332739155) internal successors, (2135), 1688 states have internal predecessors, (2135), 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) [2023-02-15 12:50:11,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2135 transitions. [2023-02-15 12:50:11,859 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2135 transitions. Word has length 60 [2023-02-15 12:50:11,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:50:11,859 INFO L495 AbstractCegarLoop]: Abstraction has 1689 states and 2135 transitions. [2023-02-15 12:50:11,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:50:11,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2135 transitions. [2023-02-15 12:50:11,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-02-15 12:50:11,861 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:50:11,861 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:50:11,874 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 (42)] Forceful destruction successful, exit code 0 [2023-02-15 12:50:12,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:50:12,073 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:50:12,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:50:12,073 INFO L85 PathProgramCache]: Analyzing trace with hash -370900910, now seen corresponding path program 2 times [2023-02-15 12:50:12,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:50:12,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494009881] [2023-02-15 12:50:12,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 12:50:12,073 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:50:12,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:50:12,075 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:50:12,075 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 (43)] Waiting until timeout for monitored process [2023-02-15 12:50:12,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 12:50:12,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:50:12,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-15 12:50:12,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:50:12,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 12:50:12,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-02-15 12:50:12,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-15 12:50:13,568 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-02-15 12:50:13,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:50:15,093 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 38 proven. 36 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-02-15 12:50:15,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:50:15,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494009881] [2023-02-15 12:50:15,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494009881] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:50:15,094 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:50:15,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2023-02-15 12:50:15,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32622957] [2023-02-15 12:50:15,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:50:15,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-15 12:50:15,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:50:15,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-15 12:50:15,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2023-02-15 12:50:15,095 INFO L87 Difference]: Start difference. First operand 1689 states and 2135 transitions. Second operand has 21 states, 20 states have (on average 4.7) internal successors, (94), 21 states have internal predecessors, (94), 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) [2023-02-15 12:50:19,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 12:50:27,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:50:27,391 INFO L93 Difference]: Finished difference Result 4012 states and 5123 transitions. [2023-02-15 12:50:27,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-15 12:50:27,392 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.7) internal successors, (94), 21 states have internal predecessors, (94), 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 70 [2023-02-15 12:50:27,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:50:27,403 INFO L225 Difference]: With dead ends: 4012 [2023-02-15 12:50:27,403 INFO L226 Difference]: Without dead ends: 4012 [2023-02-15 12:50:27,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=449, Invalid=1713, Unknown=0, NotChecked=0, Total=2162 [2023-02-15 12:50:27,404 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 1055 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-02-15 12:50:27,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1055 Valid, 760 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2023-02-15 12:50:27,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4012 states. [2023-02-15 12:50:27,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4012 to 2487. [2023-02-15 12:50:27,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2487 states, 2481 states have (on average 1.290608625554212) internal successors, (3202), 2486 states have internal predecessors, (3202), 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) [2023-02-15 12:50:27,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 3202 transitions. [2023-02-15 12:50:27,442 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 3202 transitions. Word has length 70 [2023-02-15 12:50:27,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:50:27,442 INFO L495 AbstractCegarLoop]: Abstraction has 2487 states and 3202 transitions. [2023-02-15 12:50:27,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.7) internal successors, (94), 21 states have internal predecessors, (94), 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) [2023-02-15 12:50:27,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 3202 transitions. [2023-02-15 12:50:27,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-02-15 12:50:27,445 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:50:27,445 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:50:27,467 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 (43)] Forceful destruction successful, exit code 0 [2023-02-15 12:50:27,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:50:27,665 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:50:27,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:50:27,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1749548629, now seen corresponding path program 3 times [2023-02-15 12:50:27,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:50:27,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446023555] [2023-02-15 12:50:27,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 12:50:27,666 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:50:27,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:50:27,667 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:50:27,667 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 (44)] Waiting until timeout for monitored process [2023-02-15 12:50:27,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-15 12:50:27,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:50:27,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-15 12:50:27,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:50:28,055 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-02-15 12:50:28,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 17 [2023-02-15 12:50:28,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-02-15 12:50:29,092 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-02-15 12:50:29,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:50:31,728 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-02-15 12:50:31,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:50:31,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446023555] [2023-02-15 12:50:31,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446023555] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:50:31,730 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:50:31,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-02-15 12:50:31,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075178708] [2023-02-15 12:50:31,730 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:50:31,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 12:50:31,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:50:31,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 12:50:31,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2023-02-15 12:50:31,731 INFO L87 Difference]: Start difference. First operand 2487 states and 3202 transitions. Second operand has 20 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 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) [2023-02-15 12:50:36,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:50:36,628 INFO L93 Difference]: Finished difference Result 5318 states and 6853 transitions. [2023-02-15 12:50:36,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-15 12:50:36,630 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 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 74 [2023-02-15 12:50:36,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:50:36,643 INFO L225 Difference]: With dead ends: 5318 [2023-02-15 12:50:36,644 INFO L226 Difference]: Without dead ends: 5318 [2023-02-15 12:50:36,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=397, Invalid=793, Unknown=0, NotChecked=0, Total=1190 [2023-02-15 12:50:36,645 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 762 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:50:36,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 166 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-02-15 12:50:36,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5318 states. [2023-02-15 12:50:36,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5318 to 2485. [2023-02-15 12:50:36,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 2479 states have (on average 1.2888261395724083) internal successors, (3195), 2484 states have internal predecessors, (3195), 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) [2023-02-15 12:50:36,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 3195 transitions. [2023-02-15 12:50:36,687 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 3195 transitions. Word has length 74 [2023-02-15 12:50:36,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:50:36,688 INFO L495 AbstractCegarLoop]: Abstraction has 2485 states and 3195 transitions. [2023-02-15 12:50:36,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 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) [2023-02-15 12:50:36,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 3195 transitions. [2023-02-15 12:50:36,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-02-15 12:50:36,690 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:50:36,690 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:50:36,702 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 (44)] Forceful destruction successful, exit code 0 [2023-02-15 12:50:36,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:50:36,901 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:50:36,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:50:36,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1746122625, now seen corresponding path program 7 times [2023-02-15 12:50:36,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:50:36,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208722291] [2023-02-15 12:50:36,902 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 12:50:36,902 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:50:36,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:50:36,903 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:50:36,906 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 (45)] Waiting until timeout for monitored process [2023-02-15 12:50:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:50:37,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-15 12:50:37,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:50:37,395 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-02-15 12:50:37,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 17 [2023-02-15 12:50:38,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2023-02-15 12:50:38,044 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 155 proven. 100 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-02-15 12:50:38,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:50:39,746 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 163 proven. 92 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-02-15 12:50:39,747 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:50:39,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208722291] [2023-02-15 12:50:39,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208722291] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:50:39,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:50:39,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2023-02-15 12:50:39,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454027977] [2023-02-15 12:50:39,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:50:39,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-15 12:50:39,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:50:39,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-15 12:50:39,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=847, Unknown=0, NotChecked=0, Total=992 [2023-02-15 12:50:39,748 INFO L87 Difference]: Start difference. First operand 2485 states and 3195 transitions. Second operand has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 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) [2023-02-15 12:51:19,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:51:19,881 INFO L93 Difference]: Finished difference Result 6849 states and 8769 transitions. [2023-02-15 12:51:19,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-02-15 12:51:19,883 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 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 76 [2023-02-15 12:51:19,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:51:19,893 INFO L225 Difference]: With dead ends: 6849 [2023-02-15 12:51:19,893 INFO L226 Difference]: Without dead ends: 6711 [2023-02-15 12:51:19,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=971, Invalid=4141, Unknown=0, NotChecked=0, Total=5112 [2023-02-15 12:51:19,895 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 3945 mSDsluCounter, 2755 mSDsCounter, 0 mSdLazyCounter, 5048 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3945 SdHoareTripleChecker+Valid, 2983 SdHoareTripleChecker+Invalid, 5177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 5048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.4s IncrementalHoareTripleChecker+Time [2023-02-15 12:51:19,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3945 Valid, 2983 Invalid, 5177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 5048 Invalid, 0 Unknown, 0 Unchecked, 36.4s Time] [2023-02-15 12:51:19,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6711 states. [2023-02-15 12:51:19,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6711 to 4119. [2023-02-15 12:51:19,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4119 states, 4113 states have (on average 1.2968636032093364) internal successors, (5334), 4118 states have internal predecessors, (5334), 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) [2023-02-15 12:51:19,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4119 states to 4119 states and 5334 transitions. [2023-02-15 12:51:19,962 INFO L78 Accepts]: Start accepts. Automaton has 4119 states and 5334 transitions. Word has length 76 [2023-02-15 12:51:19,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:51:19,962 INFO L495 AbstractCegarLoop]: Abstraction has 4119 states and 5334 transitions. [2023-02-15 12:51:19,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 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) [2023-02-15 12:51:19,962 INFO L276 IsEmpty]: Start isEmpty. Operand 4119 states and 5334 transitions. [2023-02-15 12:51:19,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-02-15 12:51:19,965 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:51:19,965 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:51:19,980 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 (45)] Forceful destruction successful, exit code 0 [2023-02-15 12:51:20,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:51:20,178 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-15 12:51:20,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:51:20,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1773352908, now seen corresponding path program 3 times [2023-02-15 12:51:20,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:51:20,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368408428] [2023-02-15 12:51:20,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 12:51:20,179 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:51:20,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:51:20,180 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:51:20,181 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 (46)] Waiting until timeout for monitored process [2023-02-15 12:51:20,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-15 12:51:20,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:51:20,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-15 12:51:20,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:51:20,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 12:51:20,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-02-15 12:51:20,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 12:51:20,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 12:51:20,688 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-15 12:51:20,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 25 [2023-02-15 12:51:20,737 INFO L321 Elim1Store]: treesize reduction 17, result has 45.2 percent of original size [2023-02-15 12:51:20,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 38 [2023-02-15 12:51:21,788 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-02-15 12:51:21,789 INFO L328 TraceCheckSpWp]: Computing backward predicates...