./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 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/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-?-574ddb4 [2023-02-18 20:08:47,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 20:08:47,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 20:08:47,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 20:08:47,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 20:08:47,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 20:08:47,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 20:08:47,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 20:08:47,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 20:08:47,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 20:08:47,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 20:08:47,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 20:08:47,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 20:08:47,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 20:08:47,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 20:08:47,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 20:08:47,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 20:08:47,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 20:08:47,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 20:08:47,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 20:08:47,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 20:08:47,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 20:08:47,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 20:08:47,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 20:08:47,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 20:08:47,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 20:08:47,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 20:08:47,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 20:08:47,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 20:08:47,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 20:08:47,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 20:08:47,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 20:08:47,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 20:08:47,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 20:08:47,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 20:08:47,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 20:08:47,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 20:08:47,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 20:08:47,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 20:08:47,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 20:08:47,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 20:08:47,603 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-18 20:08:47,617 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 20:08:47,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 20:08:47,617 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 20:08:47,617 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 20:08:47,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 20:08:47,618 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 20:08:47,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 20:08:47,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 20:08:47,619 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 20:08:47,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 20:08:47,619 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 20:08:47,619 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 20:08:47,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 20:08:47,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 20:08:47,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 20:08:47,620 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 20:08:47,620 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 20:08:47,620 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 20:08:47,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 20:08:47,621 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 20:08:47,621 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 20:08:47,621 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 20:08:47,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 20:08:47,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 20:08:47,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 20:08:47,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 20:08:47,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 20:08:47,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 20:08:47,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 20:08:47,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 20:08:47,622 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 20:08:47,623 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 20:08:47,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 20:08:47,623 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 20:08:47,623 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf [2023-02-18 20:08:47,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 20:08:47,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 20:08:47,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 20:08:47,814 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 20:08:47,814 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 20:08:47,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2023-02-18 20:08:48,825 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 20:08:49,032 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 20:08:49,033 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2023-02-18 20:08:49,047 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7c4b7f3f/c0f881ce87284b98bce3d7ca3d688abc/FLAGacf9bff2f [2023-02-18 20:08:49,056 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7c4b7f3f/c0f881ce87284b98bce3d7ca3d688abc [2023-02-18 20:08:49,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 20:08:49,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 20:08:49,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 20:08:49,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 20:08:49,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 20:08:49,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 08:08:49" (1/1) ... [2023-02-18 20:08:49,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d2e7d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:08:49, skipping insertion in model container [2023-02-18 20:08:49,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 08:08:49" (1/1) ... [2023-02-18 20:08:49,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 20:08:49,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 20:08:49,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 20:08:49,535 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-02-18 20:08:49,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7c88653b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:08:49, skipping insertion in model container [2023-02-18 20:08:49,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 20:08:49,537 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-18 20:08:49,539 INFO L158 Benchmark]: Toolchain (without parser) took 479.26ms. Allocated memory is still 144.7MB. Free memory was 100.6MB in the beginning and 107.6MB in the end (delta: -7.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-18 20:08:49,540 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 115.3MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 20:08:49,553 INFO L158 Benchmark]: CACSL2BoogieTranslator took 477.53ms. Allocated memory is still 144.7MB. Free memory was 100.6MB in the beginning and 107.6MB in the end (delta: -7.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-18 20:08:49,555 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 115.3MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 477.53ms. Allocated memory is still 144.7MB. Free memory was 100.6MB in the beginning and 107.6MB in the end (delta: -7.1MB). Peak memory consumption was 4.2MB. 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-?-574ddb4 [2023-02-18 20:08:51,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 20:08:51,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 20:08:51,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 20:08:51,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 20:08:51,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 20:08:51,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 20:08:51,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 20:08:51,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 20:08:51,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 20:08:51,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 20:08:51,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 20:08:51,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 20:08:51,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 20:08:51,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 20:08:51,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 20:08:51,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 20:08:51,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 20:08:51,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 20:08:51,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 20:08:51,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 20:08:51,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 20:08:51,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 20:08:51,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 20:08:51,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 20:08:51,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 20:08:51,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 20:08:51,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 20:08:51,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 20:08:51,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 20:08:51,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 20:08:51,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 20:08:51,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 20:08:51,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 20:08:51,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 20:08:51,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 20:08:51,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 20:08:51,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 20:08:51,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 20:08:51,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 20:08:51,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 20:08:51,507 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-18 20:08:51,528 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 20:08:51,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 20:08:51,529 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 20:08:51,529 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 20:08:51,530 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 20:08:51,530 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 20:08:51,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 20:08:51,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 20:08:51,531 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 20:08:51,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 20:08:51,532 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 20:08:51,532 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 20:08:51,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 20:08:51,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 20:08:51,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 20:08:51,532 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 20:08:51,533 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 20:08:51,533 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 20:08:51,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 20:08:51,533 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 20:08:51,533 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-18 20:08:51,533 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-18 20:08:51,533 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 20:08:51,533 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 20:08:51,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 20:08:51,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 20:08:51,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 20:08:51,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 20:08:51,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 20:08:51,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 20:08:51,535 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-18 20:08:51,535 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-18 20:08:51,535 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 20:08:51,535 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 20:08:51,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 20:08:51,535 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-18 20:08:51,535 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 20:08:51,536 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf [2023-02-18 20:08:51,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 20:08:51,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 20:08:51,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 20:08:51,906 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 20:08:51,912 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 20:08:51,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2023-02-18 20:08:53,066 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 20:08:53,255 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 20:08:53,255 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2023-02-18 20:08:53,282 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10b70550e/7539abbd682c4cde9d33a199e148a2d8/FLAGac213f24d [2023-02-18 20:08:53,295 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10b70550e/7539abbd682c4cde9d33a199e148a2d8 [2023-02-18 20:08:53,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 20:08:53,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 20:08:53,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 20:08:53,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 20:08:53,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 20:08:53,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 08:08:53" (1/1) ... [2023-02-18 20:08:53,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a90e4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:08:53, skipping insertion in model container [2023-02-18 20:08:53,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 08:08:53" (1/1) ... [2023-02-18 20:08:53,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 20:08:53,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 20:08:53,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 20:08:53,601 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-18 20:08:53,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 20:08:53,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 20:08:53,670 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 20:08:53,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 20:08:53,726 INFO L208 MainTranslator]: Completed translation [2023-02-18 20:08:53,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:08:53 WrapperNode [2023-02-18 20:08:53,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 20:08:53,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 20:08:53,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 20:08:53,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 20:08:53,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:08:53" (1/1) ... [2023-02-18 20:08:53,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:08:53" (1/1) ... [2023-02-18 20:08:53,784 INFO L138 Inliner]: procedures = 117, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 114 [2023-02-18 20:08:53,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 20:08:53,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 20:08:53,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 20:08:53,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 20:08:53,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:08:53" (1/1) ... [2023-02-18 20:08:53,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:08:53" (1/1) ... [2023-02-18 20:08:53,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:08:53" (1/1) ... [2023-02-18 20:08:53,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:08:53" (1/1) ... [2023-02-18 20:08:53,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:08:53" (1/1) ... [2023-02-18 20:08:53,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:08:53" (1/1) ... [2023-02-18 20:08:53,828 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:08:53" (1/1) ... [2023-02-18 20:08:53,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:08:53" (1/1) ... [2023-02-18 20:08:53,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 20:08:53,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 20:08:53,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 20:08:53,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 20:08:53,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:08:53" (1/1) ... [2023-02-18 20:08:53,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 20:08:53,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 20:08:53,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 20:08:53,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 20:08:53,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-18 20:08:53,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 20:08:53,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 20:08:53,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-18 20:08:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 20:08:53,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 20:08:54,062 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 20:08:54,063 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 20:08:54,399 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 20:08:54,403 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 20:08:54,404 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2023-02-18 20:08:54,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 08:08:54 BoogieIcfgContainer [2023-02-18 20:08:54,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 20:08:54,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 20:08:54,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 20:08:54,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 20:08:54,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 08:08:53" (1/3) ... [2023-02-18 20:08:54,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42084860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 08:08:54, skipping insertion in model container [2023-02-18 20:08:54,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:08:53" (2/3) ... [2023-02-18 20:08:54,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42084860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 08:08:54, skipping insertion in model container [2023-02-18 20:08:54,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 08:08:54" (3/3) ... [2023-02-18 20:08:54,412 INFO L112 eAbstractionObserver]: Analyzing ICFG lis-alloca-1.i [2023-02-18 20:08:54,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 20:08:54,424 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2023-02-18 20:08:54,461 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 20:08:54,466 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;@5c601726, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 20:08:54,466 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-02-18 20:08:54,469 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) [2023-02-18 20:08:54,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 20:08:54,472 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:08:54,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 20:08:54,473 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)] === [2023-02-18 20:08:54,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:08:54,476 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2023-02-18 20:08:54,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:08:54,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607220434] [2023-02-18 20:08:54,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:08:54,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:08:54,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:08:54,504 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:08:54,505 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 (2)] Waiting until timeout for monitored process [2023-02-18 20:08:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:08:54,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 20:08:54,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:08:54,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 20:08:54,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:08:54,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:08:54,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:08:54,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607220434] [2023-02-18 20:08:54,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607220434] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:08:54,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:08:54,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 20:08:54,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220975589] [2023-02-18 20:08:54,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:08:54,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 20:08:54,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:08:54,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 20:08:54,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 20:08:54,636 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) [2023-02-18 20:08:54,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:08:54,733 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2023-02-18 20:08:54,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 20:08:54,735 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 [2023-02-18 20:08:54,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:08:54,741 INFO L225 Difference]: With dead ends: 66 [2023-02-18 20:08:54,741 INFO L226 Difference]: Without dead ends: 64 [2023-02-18 20:08:54,742 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 [2023-02-18 20:08:54,746 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 [2023-02-18 20:08:54,747 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] [2023-02-18 20:08:54,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-18 20:08:54,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-02-18 20:08:54,772 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) [2023-02-18 20:08:54,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2023-02-18 20:08:54,775 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 6 [2023-02-18 20:08:54,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:08:54,776 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2023-02-18 20:08:54,776 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) [2023-02-18 20:08:54,776 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2023-02-18 20:08:54,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 20:08:54,777 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:08:54,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 20:08:54,797 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 [2023-02-18 20:08:54,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:08:54,984 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)] === [2023-02-18 20:08:54,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:08:54,985 INFO L85 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2023-02-18 20:08:54,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:08:54,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068132693] [2023-02-18 20:08:54,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:08:54,986 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:08:54,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:08:54,987 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:08:54,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-18 20:08:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:08:55,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-18 20:08:55,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:08:55,063 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 [2023-02-18 20:08:55,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:08:55,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:08:55,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:08:55,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068132693] [2023-02-18 20:08:55,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068132693] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:08:55,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:08:55,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 20:08:55,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234150331] [2023-02-18 20:08:55,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:08:55,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 20:08:55,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:08:55,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 20:08:55,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 20:08:55,072 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) [2023-02-18 20:08:55,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:08:55,359 INFO L93 Difference]: Finished difference Result 129 states and 144 transitions. [2023-02-18 20:08:55,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 20:08:55,360 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 [2023-02-18 20:08:55,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:08:55,361 INFO L225 Difference]: With dead ends: 129 [2023-02-18 20:08:55,361 INFO L226 Difference]: Without dead ends: 129 [2023-02-18 20:08:55,361 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 [2023-02-18 20:08:55,362 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 74 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2023-02-18 20:08:55,362 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] [2023-02-18 20:08:55,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-02-18 20:08:55,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 67. [2023-02-18 20:08:55,367 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) [2023-02-18 20:08:55,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2023-02-18 20:08:55,368 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 6 [2023-02-18 20:08:55,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:08:55,369 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2023-02-18 20:08:55,369 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) [2023-02-18 20:08:55,369 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2023-02-18 20:08:55,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 20:08:55,370 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:08:55,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 20:08:55,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-18 20:08:55,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:08:55,577 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)] === [2023-02-18 20:08:55,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:08:55,577 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2023-02-18 20:08:55,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:08:55,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988636143] [2023-02-18 20:08:55,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:08:55,578 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:08:55,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:08:55,579 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:08:55,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-18 20:08:55,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:08:55,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 20:08:55,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:08:55,621 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 [2023-02-18 20:08:55,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:08:55,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:08:55,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:08:55,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988636143] [2023-02-18 20:08:55,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988636143] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:08:55,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:08:55,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 20:08:55,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166698996] [2023-02-18 20:08:55,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:08:55,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 20:08:55,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:08:55,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 20:08:55,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 20:08:55,638 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) [2023-02-18 20:08:55,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:08:55,800 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2023-02-18 20:08:55,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 20:08:55,800 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 [2023-02-18 20:08:55,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:08:55,801 INFO L225 Difference]: With dead ends: 71 [2023-02-18 20:08:55,801 INFO L226 Difference]: Without dead ends: 71 [2023-02-18 20:08:55,801 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 [2023-02-18 20:08:55,802 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 74 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-02-18 20:08:55,802 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] [2023-02-18 20:08:55,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-02-18 20:08:55,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2023-02-18 20:08:55,805 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) [2023-02-18 20:08:55,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2023-02-18 20:08:55,806 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 6 [2023-02-18 20:08:55,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:08:55,806 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2023-02-18 20:08:55,806 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) [2023-02-18 20:08:55,806 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2023-02-18 20:08:55,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 20:08:55,807 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:08:55,807 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:08:55,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-02-18 20:08:56,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:08:56,018 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)] === [2023-02-18 20:08:56,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:08:56,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1091210163, now seen corresponding path program 1 times [2023-02-18 20:08:56,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:08:56,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961490232] [2023-02-18 20:08:56,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:08:56,019 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:08:56,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:08:56,025 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:08:56,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-18 20:08:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:08:56,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 20:08:56,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:08:56,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:08:56,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:08:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:08:56,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:08:56,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961490232] [2023-02-18 20:08:56,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961490232] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:08:56,106 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:08:56,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-18 20:08:56,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664153231] [2023-02-18 20:08:56,106 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:08:56,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 20:08:56,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:08:56,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 20:08:56,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-18 20:08:56,107 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) [2023-02-18 20:08:56,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:08:56,175 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2023-02-18 20:08:56,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 20:08:56,176 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 [2023-02-18 20:08:56,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:08:56,177 INFO L225 Difference]: With dead ends: 127 [2023-02-18 20:08:56,177 INFO L226 Difference]: Without dead ends: 127 [2023-02-18 20:08:56,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-18 20:08:56,179 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 [2023-02-18 20:08:56,179 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] [2023-02-18 20:08:56,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-02-18 20:08:56,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 72. [2023-02-18 20:08:56,183 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) [2023-02-18 20:08:56,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2023-02-18 20:08:56,201 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 10 [2023-02-18 20:08:56,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:08:56,202 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2023-02-18 20:08:56,202 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) [2023-02-18 20:08:56,202 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2023-02-18 20:08:56,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 20:08:56,203 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:08:56,203 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:08:56,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-18 20:08:56,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:08:56,410 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)] === [2023-02-18 20:08:56,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:08:56,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2023-02-18 20:08:56,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:08:56,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566926430] [2023-02-18 20:08:56,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:08:56,411 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:08:56,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:08:56,417 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:08:56,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-18 20:08:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:08:56,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-18 20:08:56,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:08:56,474 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 [2023-02-18 20:08:56,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:08:56,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:08:56,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:08:56,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:08:56,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566926430] [2023-02-18 20:08:56,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566926430] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:08:56,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:08:56,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-02-18 20:08:56,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387546464] [2023-02-18 20:08:56,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:08:56,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 20:08:56,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:08:56,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 20:08:56,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-18 20:08:56,611 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) [2023-02-18 20:08:57,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:08:57,651 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2023-02-18 20:08:57,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 20:08:57,652 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 [2023-02-18 20:08:57,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:08:57,653 INFO L225 Difference]: With dead ends: 140 [2023-02-18 20:08:57,653 INFO L226 Difference]: Without dead ends: 140 [2023-02-18 20:08:57,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2023-02-18 20:08:57,654 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 339 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 0.9s IncrementalHoareTripleChecker+Time [2023-02-18 20:08:57,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 208 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-18 20:08:57,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-02-18 20:08:57,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 84. [2023-02-18 20:08:57,658 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) [2023-02-18 20:08:57,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2023-02-18 20:08:57,659 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 10 [2023-02-18 20:08:57,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:08:57,659 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2023-02-18 20:08:57,659 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) [2023-02-18 20:08:57,659 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2023-02-18 20:08:57,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 20:08:57,659 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:08:57,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:08:57,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-02-18 20:08:57,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:08:57,866 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)] === [2023-02-18 20:08:57,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:08:57,867 INFO L85 PathProgramCache]: Analyzing trace with hash -680998152, now seen corresponding path program 1 times [2023-02-18 20:08:57,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:08:57,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796228264] [2023-02-18 20:08:57,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:08:57,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:08:57,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:08:57,869 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:08:57,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-18 20:08:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:08:57,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 20:08:57,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:08:57,923 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:08:57,924 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 32 [2023-02-18 20:08:57,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 20:08:57,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:08:57,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:08:57,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796228264] [2023-02-18 20:08:57,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796228264] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:08:57,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:08:57,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 20:08:57,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987611894] [2023-02-18 20:08:57,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:08:57,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 20:08:57,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:08:57,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 20:08:57,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 20:08:57,934 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) [2023-02-18 20:08:58,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:08:58,015 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2023-02-18 20:08:58,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 20:08:58,015 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 [2023-02-18 20:08:58,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:08:58,016 INFO L225 Difference]: With dead ends: 77 [2023-02-18 20:08:58,017 INFO L226 Difference]: Without dead ends: 77 [2023-02-18 20:08:58,017 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 [2023-02-18 20:08:58,017 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 [2023-02-18 20:08:58,017 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] [2023-02-18 20:08:58,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-18 20:08:58,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-02-18 20:08:58,021 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) [2023-02-18 20:08:58,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2023-02-18 20:08:58,022 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 12 [2023-02-18 20:08:58,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:08:58,022 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2023-02-18 20:08:58,022 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) [2023-02-18 20:08:58,022 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2023-02-18 20:08:58,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 20:08:58,023 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:08:58,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:08:58,030 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 (7)] Ended with exit code 0 [2023-02-18 20:08:58,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:08:58,232 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)] === [2023-02-18 20:08:58,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:08:58,232 INFO L85 PathProgramCache]: Analyzing trace with hash -680998151, now seen corresponding path program 1 times [2023-02-18 20:08:58,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:08:58,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149131306] [2023-02-18 20:08:58,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:08:58,232 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:08:58,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:08:58,233 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:08:58,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-18 20:08:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:08:58,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 20:08:58,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:08:58,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:08:58,375 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 [2023-02-18 20:08:58,381 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 [2023-02-18 20:08:58,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 20:08:58,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:08:58,391 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:08:58,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149131306] [2023-02-18 20:08:58,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149131306] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:08:58,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:08:58,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 20:08:58,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319355055] [2023-02-18 20:08:58,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:08:58,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 20:08:58,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:08:58,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 20:08:58,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 20:08:58,395 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) [2023-02-18 20:08:58,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:08:58,579 INFO L93 Difference]: Finished difference Result 132 states and 150 transitions. [2023-02-18 20:08:58,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 20:08:58,580 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 [2023-02-18 20:08:58,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:08:58,580 INFO L225 Difference]: With dead ends: 132 [2023-02-18 20:08:58,580 INFO L226 Difference]: Without dead ends: 132 [2023-02-18 20:08:58,580 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 [2023-02-18 20:08:58,581 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 67 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2023-02-18 20:08:58,581 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] [2023-02-18 20:08:58,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-02-18 20:08:58,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 80. [2023-02-18 20:08:58,585 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) [2023-02-18 20:08:58,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2023-02-18 20:08:58,585 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 12 [2023-02-18 20:08:58,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:08:58,586 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2023-02-18 20:08:58,586 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) [2023-02-18 20:08:58,586 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2023-02-18 20:08:58,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 20:08:58,586 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:08:58,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:08:58,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-02-18 20:08:58,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:08:58,787 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)] === [2023-02-18 20:08:58,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:08:58,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1074025161, now seen corresponding path program 1 times [2023-02-18 20:08:58,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:08:58,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242101211] [2023-02-18 20:08:58,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:08:58,788 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:08:58,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:08:58,789 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:08:58,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-18 20:08:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:08:58,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 20:08:58,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:08:58,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:08:58,848 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 [2023-02-18 20:08:58,852 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 [2023-02-18 20:08:58,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 20:08:58,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:08:58,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:08:58,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242101211] [2023-02-18 20:08:58,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242101211] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:08:58,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:08:58,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 20:08:58,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968997128] [2023-02-18 20:08:58,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:08:58,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 20:08:58,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:08:58,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 20:08:58,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-18 20:08:58,869 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) [2023-02-18 20:08:59,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:08:59,047 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2023-02-18 20:08:59,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 20:08:59,048 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 [2023-02-18 20:08:59,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:08:59,048 INFO L225 Difference]: With dead ends: 86 [2023-02-18 20:08:59,048 INFO L226 Difference]: Without dead ends: 86 [2023-02-18 20:08:59,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-02-18 20:08:59,049 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 66 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 20:08:59,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 105 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 20:08:59,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-02-18 20:08:59,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 79. [2023-02-18 20:08:59,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 62 states have (on average 1.4516129032258065) internal successors, (90), 78 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:08:59,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2023-02-18 20:08:59,052 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 12 [2023-02-18 20:08:59,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:08:59,052 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2023-02-18 20:08:59,052 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) [2023-02-18 20:08:59,053 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2023-02-18 20:08:59,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-18 20:08:59,053 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:08:59,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:08:59,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-02-18 20:08:59,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:08:59,265 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)] === [2023-02-18 20:08:59,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:08:59,266 INFO L85 PathProgramCache]: Analyzing trace with hash 363893777, now seen corresponding path program 1 times [2023-02-18 20:08:59,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:08:59,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654859203] [2023-02-18 20:08:59,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:08:59,266 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:08:59,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:08:59,267 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:08:59,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-02-18 20:08:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:08:59,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 20:08:59,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:08:59,359 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:08:59,359 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 25 [2023-02-18 20:08:59,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 20:08:59,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:08:59,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:08:59,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1654859203] [2023-02-18 20:08:59,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1654859203] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:08:59,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:08:59,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 20:08:59,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433536139] [2023-02-18 20:08:59,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:08:59,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 20:08:59,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:08:59,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 20:08:59,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 20:08:59,369 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:08:59,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:08:59,441 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2023-02-18 20:08:59,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 20:08:59,442 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 [2023-02-18 20:08:59,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:08:59,442 INFO L225 Difference]: With dead ends: 77 [2023-02-18 20:08:59,442 INFO L226 Difference]: Without dead ends: 77 [2023-02-18 20:08:59,442 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 [2023-02-18 20:08:59,443 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 [2023-02-18 20:08:59,443 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] [2023-02-18 20:08:59,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-18 20:08:59,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-02-18 20:08:59,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 76 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:08:59,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2023-02-18 20:08:59,445 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 13 [2023-02-18 20:08:59,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:08:59,445 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2023-02-18 20:08:59,445 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) [2023-02-18 20:08:59,446 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2023-02-18 20:08:59,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-18 20:08:59,446 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:08:59,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:08:59,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-02-18 20:08:59,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:08:59,657 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)] === [2023-02-18 20:08:59,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:08:59,658 INFO L85 PathProgramCache]: Analyzing trace with hash 363893778, now seen corresponding path program 1 times [2023-02-18 20:08:59,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:08:59,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729214151] [2023-02-18 20:08:59,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:08:59,659 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:08:59,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:08:59,663 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:08:59,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-02-18 20:08:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:08:59,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 20:08:59,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:08:59,767 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:08:59,767 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 29 [2023-02-18 20:08:59,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 20:08:59,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:08:59,775 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:08:59,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729214151] [2023-02-18 20:08:59,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729214151] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:08:59,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:08:59,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 20:08:59,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115884488] [2023-02-18 20:08:59,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:08:59,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 20:08:59,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:08:59,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 20:08:59,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 20:08:59,777 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:08:59,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:08:59,922 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2023-02-18 20:08:59,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 20:08:59,923 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 [2023-02-18 20:08:59,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:08:59,924 INFO L225 Difference]: With dead ends: 127 [2023-02-18 20:08:59,924 INFO L226 Difference]: Without dead ends: 127 [2023-02-18 20:08:59,924 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 [2023-02-18 20:08:59,924 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 57 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 20:08:59,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 134 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 20:08:59,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-02-18 20:08:59,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 81. [2023-02-18 20:08:59,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 66 states have (on average 1.393939393939394) internal successors, (92), 80 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:08:59,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2023-02-18 20:08:59,927 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 13 [2023-02-18 20:08:59,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:08:59,927 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2023-02-18 20:08:59,927 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) [2023-02-18 20:08:59,927 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2023-02-18 20:08:59,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-18 20:08:59,927 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:08:59,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:08:59,935 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 (11)] Forceful destruction successful, exit code 0 [2023-02-18 20:09:00,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:09:00,128 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)] === [2023-02-18 20:09:00,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:09:00,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1064958356, now seen corresponding path program 1 times [2023-02-18 20:09:00,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:09:00,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535550806] [2023-02-18 20:09:00,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:09:00,130 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 [2023-02-18 20:09:00,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:09:00,131 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:09:00,131 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 (12)] Waiting until timeout for monitored process [2023-02-18 20:09:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:09:00,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 20:09:00,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:09:00,192 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:09:00,193 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 29 [2023-02-18 20:09:00,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 20:09:00,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:09:00,210 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:09:00,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535550806] [2023-02-18 20:09:00,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535550806] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:09:00,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:09:00,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 20:09:00,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640566438] [2023-02-18 20:09:00,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:09:00,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 20:09:00,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:09:00,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 20:09:00,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-18 20:09:00,211 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:09:00,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:09:00,391 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2023-02-18 20:09:00,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 20:09:00,392 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 [2023-02-18 20:09:00,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:09:00,392 INFO L225 Difference]: With dead ends: 83 [2023-02-18 20:09:00,392 INFO L226 Difference]: Without dead ends: 83 [2023-02-18 20:09:00,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-02-18 20:09:00,393 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 60 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 20:09:00,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 100 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 20:09:00,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-02-18 20:09:00,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2023-02-18 20:09:00,395 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) [2023-02-18 20:09:00,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2023-02-18 20:09:00,395 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 13 [2023-02-18 20:09:00,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:09:00,395 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2023-02-18 20:09:00,395 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) [2023-02-18 20:09:00,395 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2023-02-18 20:09:00,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 20:09:00,396 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:09:00,396 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:09:00,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-02-18 20:09:00,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:09:00,603 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:09:00,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:09:00,604 INFO L85 PathProgramCache]: Analyzing trace with hash 262068158, now seen corresponding path program 1 times [2023-02-18 20:09:00,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:09:00,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234127083] [2023-02-18 20:09:00,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:09:00,604 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:09:00,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:09:00,605 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:09:00,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-02-18 20:09:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:09:00,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 20:09:00,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:09:00,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 20:09:00,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:09:00,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 20:09:00,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:09:00,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234127083] [2023-02-18 20:09:00,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234127083] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:09:00,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:09:00,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-18 20:09:00,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962483333] [2023-02-18 20:09:00,725 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:09:00,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 20:09:00,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:09:00,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 20:09:00,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-18 20:09:00,726 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) [2023-02-18 20:09:00,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:09:00,915 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2023-02-18 20:09:00,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 20:09:00,916 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 [2023-02-18 20:09:00,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:09:00,916 INFO L225 Difference]: With dead ends: 100 [2023-02-18 20:09:00,916 INFO L226 Difference]: Without dead ends: 100 [2023-02-18 20:09:00,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-18 20:09:00,917 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 63 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 20:09:00,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 199 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 20:09:00,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-02-18 20:09:00,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2023-02-18 20:09:00,919 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) [2023-02-18 20:09:00,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions. [2023-02-18 20:09:00,919 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 16 [2023-02-18 20:09:00,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:09:00,919 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 108 transitions. [2023-02-18 20:09:00,919 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) [2023-02-18 20:09:00,919 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions. [2023-02-18 20:09:00,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 20:09:00,920 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:09:00,920 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:09:00,934 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 [2023-02-18 20:09:01,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:09:01,132 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:09:01,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:09:01,132 INFO L85 PathProgramCache]: Analyzing trace with hash -749049092, now seen corresponding path program 1 times [2023-02-18 20:09:01,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:09:01,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474860796] [2023-02-18 20:09:01,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:09:01,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:09:01,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:09:01,134 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:09:01,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-02-18 20:09:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:09:01,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 20:09:01,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:09:01,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:09:01,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:09:01,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:09:01,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:09:01,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474860796] [2023-02-18 20:09:01,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474860796] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:09:01,292 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:09:01,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-02-18 20:09:01,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124632321] [2023-02-18 20:09:01,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:09:01,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-18 20:09:01,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:09:01,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-18 20:09:01,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-02-18 20:09:01,293 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) [2023-02-18 20:09:01,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:09:01,614 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2023-02-18 20:09:01,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 20:09:01,615 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 [2023-02-18 20:09:01,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:09:01,616 INFO L225 Difference]: With dead ends: 116 [2023-02-18 20:09:01,616 INFO L226 Difference]: Without dead ends: 116 [2023-02-18 20:09:01,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-02-18 20:09:01,617 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 205 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 20:09:01,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 301 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 20:09:01,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-02-18 20:09:01,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 94. [2023-02-18 20:09:01,618 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) [2023-02-18 20:09:01,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions. [2023-02-18 20:09:01,619 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 16 [2023-02-18 20:09:01,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:09:01,619 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 108 transitions. [2023-02-18 20:09:01,619 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) [2023-02-18 20:09:01,619 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions. [2023-02-18 20:09:01,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-18 20:09:01,619 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:09:01,620 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] [2023-02-18 20:09:01,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-02-18 20:09:01,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:09:01,827 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:09:01,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:09:01,827 INFO L85 PathProgramCache]: Analyzing trace with hash -302012765, now seen corresponding path program 1 times [2023-02-18 20:09:01,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:09:01,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145757932] [2023-02-18 20:09:01,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:09:01,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:09:01,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:09:01,829 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:09:01,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-02-18 20:09:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:09:01,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 20:09:01,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:09:01,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 20:09:01,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:09:01,931 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 45 treesize of output 41 [2023-02-18 20:09:01,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 20:09:01,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:09:01,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145757932] [2023-02-18 20:09:01,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145757932] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:09:01,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:09:01,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-02-18 20:09:01,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207304568] [2023-02-18 20:09:01,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:09:01,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 20:09:01,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:09:01,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 20:09:01,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-02-18 20:09:01,953 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) [2023-02-18 20:09:02,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:09:02,429 INFO L93 Difference]: Finished difference Result 151 states and 172 transitions. [2023-02-18 20:09:02,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 20:09:02,430 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 [2023-02-18 20:09:02,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:09:02,431 INFO L225 Difference]: With dead ends: 151 [2023-02-18 20:09:02,431 INFO L226 Difference]: Without dead ends: 151 [2023-02-18 20:09:02,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-02-18 20:09:02,431 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 159 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 20:09:02,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 154 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 20:09:02,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-02-18 20:09:02,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 105. [2023-02-18 20:09:02,433 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) [2023-02-18 20:09:02,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 126 transitions. [2023-02-18 20:09:02,434 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 126 transitions. Word has length 20 [2023-02-18 20:09:02,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:09:02,434 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 126 transitions. [2023-02-18 20:09:02,434 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) [2023-02-18 20:09:02,434 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 126 transitions. [2023-02-18 20:09:02,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-18 20:09:02,434 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:09:02,435 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:09:02,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-02-18 20:09:02,642 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 [2023-02-18 20:09:02,642 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)] === [2023-02-18 20:09:02,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:09:02,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1581646975, now seen corresponding path program 2 times [2023-02-18 20:09:02,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:09:02,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930616175] [2023-02-18 20:09:02,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 20:09:02,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:09:02,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:09:02,644 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) [2023-02-18 20:09:02,646 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 [2023-02-18 20:09:02,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 20:09:02,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 20:09:02,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 20:09:02,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:09:02,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:09:02,744 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 [2023-02-18 20:09:02,747 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 [2023-02-18 20:09:02,773 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 20:09:02,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:09:02,883 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 20:09:02,917 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 20:09:02,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:09:02,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930616175] [2023-02-18 20:09:02,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930616175] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:09:02,918 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:09:02,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-02-18 20:09:02,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617726974] [2023-02-18 20:09:02,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:09:02,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 20:09:02,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:09:02,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 20:09:02,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-02-18 20:09:02,920 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) [2023-02-18 20:09:04,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:09:04,825 INFO L93 Difference]: Finished difference Result 233 states and 289 transitions. [2023-02-18 20:09:04,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 20:09:04,825 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 [2023-02-18 20:09:04,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:09:04,826 INFO L225 Difference]: With dead ends: 233 [2023-02-18 20:09:04,826 INFO L226 Difference]: Without dead ends: 233 [2023-02-18 20:09:04,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2023-02-18 20:09:04,826 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 525 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-02-18 20:09:04,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 147 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-02-18 20:09:04,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-02-18 20:09:04,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 169. [2023-02-18 20:09:04,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 155 states have (on average 1.4387096774193548) internal successors, (223), 168 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:09:04,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 223 transitions. [2023-02-18 20:09:04,832 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 223 transitions. Word has length 20 [2023-02-18 20:09:04,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:09:04,832 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 223 transitions. [2023-02-18 20:09:04,832 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) [2023-02-18 20:09:04,832 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 223 transitions. [2023-02-18 20:09:04,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-18 20:09:04,834 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:09:04,835 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:09:04,843 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 [2023-02-18 20:09:05,042 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 [2023-02-18 20:09:05,043 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:09:05,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:09:05,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1786415948, now seen corresponding path program 1 times [2023-02-18 20:09:05,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:09:05,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989311180] [2023-02-18 20:09:05,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:09:05,044 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 [2023-02-18 20:09:05,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:09:05,045 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:09:05,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-02-18 20:09:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:09:05,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-18 20:09:05,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:09:05,121 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:09:05,121 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 29 [2023-02-18 20:09:05,174 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 20:09:05,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:09:05,343 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 20:09:05,343 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:09:05,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989311180] [2023-02-18 20:09:05,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1989311180] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:09:05,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:09:05,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-02-18 20:09:05,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413887998] [2023-02-18 20:09:05,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:09:05,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 20:09:05,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:09:05,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 20:09:05,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-02-18 20:09:05,345 INFO L87 Difference]: Start difference. First operand 169 states and 223 transitions. Second operand has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:09:07,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:09:07,201 INFO L93 Difference]: Finished difference Result 219 states and 260 transitions. [2023-02-18 20:09:07,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 20:09:07,202 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-18 20:09:07,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:09:07,203 INFO L225 Difference]: With dead ends: 219 [2023-02-18 20:09:07,203 INFO L226 Difference]: Without dead ends: 219 [2023-02-18 20:09:07,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-02-18 20:09:07,204 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 515 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-02-18 20:09:07,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 198 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-02-18 20:09:07,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-02-18 20:09:07,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 184. [2023-02-18 20:09:07,206 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) [2023-02-18 20:09:07,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 243 transitions. [2023-02-18 20:09:07,207 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 243 transitions. Word has length 21 [2023-02-18 20:09:07,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:09:07,207 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 243 transitions. [2023-02-18 20:09:07,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:09:07,207 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 243 transitions. [2023-02-18 20:09:07,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-18 20:09:07,207 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:09:07,207 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2023-02-18 20:09:07,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-02-18 20:09:07,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:09:07,408 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:09:07,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:09:07,409 INFO L85 PathProgramCache]: Analyzing trace with hash 302966996, now seen corresponding path program 2 times [2023-02-18 20:09:07,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:09:07,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040432494] [2023-02-18 20:09:07,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 20:09:07,410 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:09:07,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:09:07,411 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:09:07,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-02-18 20:09:07,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 20:09:07,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 20:09:07,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 20:09:07,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:09:07,471 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 [2023-02-18 20:09:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:09:07,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:09:07,918 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:09:07,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:09:07,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040432494] [2023-02-18 20:09:07,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040432494] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:09:07,918 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:09:07,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-02-18 20:09:07,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194870751] [2023-02-18 20:09:07,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:09:07,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-18 20:09:07,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:09:07,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-18 20:09:07,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-02-18 20:09:07,919 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) [2023-02-18 20:09:12,394 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 [] [2023-02-18 20:09:13,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:09:15,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:09:15,976 INFO L93 Difference]: Finished difference Result 633 states and 856 transitions. [2023-02-18 20:09:15,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-18 20:09:15,977 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 [2023-02-18 20:09:15,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:09:15,979 INFO L225 Difference]: With dead ends: 633 [2023-02-18 20:09:15,979 INFO L226 Difference]: Without dead ends: 633 [2023-02-18 20:09:15,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=311, Invalid=619, Unknown=0, NotChecked=0, Total=930 [2023-02-18 20:09:15,987 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 1135 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-02-18 20:09:15,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 558 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 518 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2023-02-18 20:09:15,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-02-18 20:09:15,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 208. [2023-02-18 20:09:15,991 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) [2023-02-18 20:09:15,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 273 transitions. [2023-02-18 20:09:15,992 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 273 transitions. Word has length 22 [2023-02-18 20:09:15,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:09:15,992 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 273 transitions. [2023-02-18 20:09:15,992 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) [2023-02-18 20:09:15,992 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 273 transitions. [2023-02-18 20:09:15,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-18 20:09:15,993 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:09:15,993 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:09:16,000 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 [2023-02-18 20:09:16,200 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 [2023-02-18 20:09:16,201 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:09:16,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:09:16,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1242696241, now seen corresponding path program 1 times [2023-02-18 20:09:16,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:09:16,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510658419] [2023-02-18 20:09:16,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:09:16,201 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:09:16,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:09:16,203 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:09:16,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-02-18 20:09:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:09:16,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-18 20:09:16,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:09:16,275 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 [2023-02-18 20:09:16,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-02-18 20:09:16,378 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:09:16,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:09:16,541 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:09:16,541 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:09:16,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510658419] [2023-02-18 20:09:16,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510658419] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:09:16,541 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:09:16,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-02-18 20:09:16,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168142139] [2023-02-18 20:09:16,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:09:16,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-18 20:09:16,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:09:16,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-18 20:09:16,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-02-18 20:09:16,543 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) [2023-02-18 20:09:17,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:09:17,779 INFO L93 Difference]: Finished difference Result 245 states and 308 transitions. [2023-02-18 20:09:17,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-18 20:09:17,779 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 [2023-02-18 20:09:17,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:09:17,780 INFO L225 Difference]: With dead ends: 245 [2023-02-18 20:09:17,780 INFO L226 Difference]: Without dead ends: 245 [2023-02-18 20:09:17,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2023-02-18 20:09:17,781 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 433 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-18 20:09:17,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 333 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-18 20:09:17,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-02-18 20:09:17,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 155. [2023-02-18 20:09:17,783 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) [2023-02-18 20:09:17,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 193 transitions. [2023-02-18 20:09:17,784 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 193 transitions. Word has length 23 [2023-02-18 20:09:17,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:09:17,784 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 193 transitions. [2023-02-18 20:09:17,784 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) [2023-02-18 20:09:17,784 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 193 transitions. [2023-02-18 20:09:17,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-18 20:09:17,784 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:09:17,784 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] [2023-02-18 20:09:17,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-02-18 20:09:17,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:09:17,990 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:09:17,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:09:17,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1547664583, now seen corresponding path program 1 times [2023-02-18 20:09:17,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:09:17,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990467870] [2023-02-18 20:09:17,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:09:17,991 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:09:17,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:09:17,992 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:09:18,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-02-18 20:09:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:09:18,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-18 20:09:18,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:09:18,102 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 [2023-02-18 20:09:18,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:09:18,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:09:18,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:09:18,121 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 20:09:18,121 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 20:09:18,128 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 46 treesize of output 55 [2023-02-18 20:09:18,151 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 61 treesize of output 57 [2023-02-18 20:09:18,173 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:09:18,174 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 102 treesize of output 26 [2023-02-18 20:09:18,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 20:09:18,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:09:18,275 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 20:09:18,275 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 20:09:18,276 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 20:09:18,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:09:18,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:09:18,279 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:09:18,279 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 231 treesize of output 118 [2023-02-18 20:09:18,285 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:09:18,285 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 154 treesize of output 382 [2023-02-18 20:09:20,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 9 [2023-02-18 20:09:39,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 20:09:39,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:09:39,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990467870] [2023-02-18 20:09:39,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1990467870] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:09:39,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:09:39,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-02-18 20:09:39,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781728394] [2023-02-18 20:09:39,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:09:39,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 20:09:39,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:09:39,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 20:09:39,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=98, Unknown=4, NotChecked=0, Total=132 [2023-02-18 20:09:39,084 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) [2023-02-18 20:09:41,386 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 [] [2023-02-18 20:09:43,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:09:43,011 INFO L93 Difference]: Finished difference Result 197 states and 246 transitions. [2023-02-18 20:09:43,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 20:09:43,012 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 [2023-02-18 20:09:43,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:09:43,012 INFO L225 Difference]: With dead ends: 197 [2023-02-18 20:09:43,012 INFO L226 Difference]: Without dead ends: 197 [2023-02-18 20:09:43,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=125, Unknown=4, NotChecked=0, Total=182 [2023-02-18 20:09:43,013 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 85 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-02-18 20:09:43,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 322 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 294 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2023-02-18 20:09:43,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-02-18 20:09:43,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 179. [2023-02-18 20:09:43,016 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) [2023-02-18 20:09:43,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 234 transitions. [2023-02-18 20:09:43,017 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 234 transitions. Word has length 26 [2023-02-18 20:09:43,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:09:43,018 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 234 transitions. [2023-02-18 20:09:43,018 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) [2023-02-18 20:09:43,018 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 234 transitions. [2023-02-18 20:09:43,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-18 20:09:43,018 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:09:43,018 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:09:43,028 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 (20)] Ended with exit code 0 [2023-02-18 20:09:43,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:09:43,227 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)] === [2023-02-18 20:09:43,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:09:43,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1090844182, now seen corresponding path program 2 times [2023-02-18 20:09:43,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:09:43,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703673601] [2023-02-18 20:09:43,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 20:09:43,228 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:09:43,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:09:43,229 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:09:43,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-02-18 20:09:43,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-18 20:09:43,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 20:09:43,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 20:09:43,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:09:43,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 20:09:43,305 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:09:43,306 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 20 treesize of output 74 [2023-02-18 20:09:43,525 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-18 20:09:43,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:09:43,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:09:43,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703673601] [2023-02-18 20:09:43,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703673601] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:09:43,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:09:43,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 20:09:43,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200470261] [2023-02-18 20:09:43,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:09:43,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 20:09:43,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:09:43,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 20:09:43,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 20:09:43,527 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) [2023-02-18 20:09:43,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:09:43,631 INFO L93 Difference]: Finished difference Result 177 states and 224 transitions. [2023-02-18 20:09:43,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 20:09:43,632 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 [2023-02-18 20:09:43,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:09:43,632 INFO L225 Difference]: With dead ends: 177 [2023-02-18 20:09:43,632 INFO L226 Difference]: Without dead ends: 177 [2023-02-18 20:09:43,632 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 [2023-02-18 20:09:43,633 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 [2023-02-18 20:09:43,633 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] [2023-02-18 20:09:43,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-02-18 20:09:43,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2023-02-18 20:09:43,635 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) [2023-02-18 20:09:43,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 224 transitions. [2023-02-18 20:09:43,635 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 224 transitions. Word has length 27 [2023-02-18 20:09:43,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:09:43,636 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 224 transitions. [2023-02-18 20:09:43,636 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) [2023-02-18 20:09:43,636 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 224 transitions. [2023-02-18 20:09:43,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-18 20:09:43,636 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:09:43,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:09:43,669 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 [2023-02-18 20:09:43,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:09:43,837 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:09:43,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:09:43,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1090844181, now seen corresponding path program 1 times [2023-02-18 20:09:43,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:09:43,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733041373] [2023-02-18 20:09:43,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:09:43,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:09:43,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:09:43,838 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:09:43,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-02-18 20:09:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:09:43,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-18 20:09:43,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:09:43,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 20:09:43,940 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 [2023-02-18 20:09:43,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:09:43,967 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:09:43,967 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 30 treesize of output 64 [2023-02-18 20:09:43,974 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:09:43,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-18 20:09:44,058 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 20:09:44,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:09:48,359 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 20:09:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 20:09:48,363 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:09:48,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733041373] [2023-02-18 20:09:48,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733041373] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:09:48,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:09:48,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2023-02-18 20:09:48,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373001863] [2023-02-18 20:09:48,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:09:48,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-18 20:09:48,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:09:48,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-18 20:09:48,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=117, Unknown=1, NotChecked=0, Total=156 [2023-02-18 20:09:48,365 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) [2023-02-18 20:09:49,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:09:49,478 INFO L93 Difference]: Finished difference Result 243 states and 303 transitions. [2023-02-18 20:09:49,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-18 20:09:49,479 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 [2023-02-18 20:09:49,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:09:49,480 INFO L225 Difference]: With dead ends: 243 [2023-02-18 20:09:49,480 INFO L226 Difference]: Without dead ends: 243 [2023-02-18 20:09:49,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=103, Invalid=276, Unknown=1, NotChecked=0, Total=380 [2023-02-18 20:09:49,480 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 465 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-18 20:09:49,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 152 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-18 20:09:49,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-02-18 20:09:49,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 182. [2023-02-18 20:09:49,483 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) [2023-02-18 20:09:49,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 229 transitions. [2023-02-18 20:09:49,483 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 229 transitions. Word has length 27 [2023-02-18 20:09:49,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:09:49,483 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 229 transitions. [2023-02-18 20:09:49,483 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) [2023-02-18 20:09:49,483 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 229 transitions. [2023-02-18 20:09:49,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-18 20:09:49,484 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:09:49,484 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] [2023-02-18 20:09:49,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-02-18 20:09:49,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:09:49,694 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:09:49,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:09:49,695 INFO L85 PathProgramCache]: Analyzing trace with hash -397297604, now seen corresponding path program 1 times [2023-02-18 20:09:49,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:09:49,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941126721] [2023-02-18 20:09:49,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:09:49,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:09:49,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:09:49,697 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:09:49,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-02-18 20:09:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:09:49,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-18 20:09:49,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:09:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-18 20:09:55,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:09:55,860 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:09:55,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941126721] [2023-02-18 20:09:55,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941126721] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:09:55,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:09:55,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 20:09:55,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635475933] [2023-02-18 20:09:55,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:09:55,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 20:09:55,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:09:55,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 20:09:55,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2023-02-18 20:09:55,861 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) [2023-02-18 20:09:57,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 20:09:59,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 20:10:01,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 20:10:03,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 20:10:05,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 20:10:08,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 20:10:10,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 20:10:12,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 20:10:14,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 20:10:14,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:10:14,296 INFO L93 Difference]: Finished difference Result 201 states and 247 transitions. [2023-02-18 20:10:14,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 20:10:14,306 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 [2023-02-18 20:10:14,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:10:14,306 INFO L225 Difference]: With dead ends: 201 [2023-02-18 20:10:14,307 INFO L226 Difference]: Without dead ends: 176 [2023-02-18 20:10:14,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2023-02-18 20:10:14,307 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2023-02-18 20:10:14,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 252 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 14 Unknown, 0 Unchecked, 18.4s Time] [2023-02-18 20:10:14,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-02-18 20:10:14,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2023-02-18 20:10:14,309 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) [2023-02-18 20:10:14,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 222 transitions. [2023-02-18 20:10:14,310 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 222 transitions. Word has length 28 [2023-02-18 20:10:14,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:10:14,310 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 222 transitions. [2023-02-18 20:10:14,310 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) [2023-02-18 20:10:14,310 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 222 transitions. [2023-02-18 20:10:14,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-18 20:10:14,310 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:10:14,310 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] [2023-02-18 20:10:14,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-02-18 20:10:14,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:10:14,520 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:10:14,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:10:14,520 INFO L85 PathProgramCache]: Analyzing trace with hash 543568764, now seen corresponding path program 1 times [2023-02-18 20:10:14,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:10:14,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225523213] [2023-02-18 20:10:14,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:10:14,521 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:10:14,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:10:14,522 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:10:14,524 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 (24)] Waiting until timeout for monitored process [2023-02-18 20:10:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:10:14,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-18 20:10:14,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:10:14,628 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-18 20:10:14,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:10:14,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:10:14,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225523213] [2023-02-18 20:10:14,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225523213] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:10:14,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:10:14,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 20:10:14,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585928197] [2023-02-18 20:10:14,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:10:14,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 20:10:14,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:10:14,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 20:10:14,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-18 20:10:14,631 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) [2023-02-18 20:10:14,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:10:14,878 INFO L93 Difference]: Finished difference Result 247 states and 311 transitions. [2023-02-18 20:10:14,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 20:10:14,878 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 [2023-02-18 20:10:14,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:10:14,879 INFO L225 Difference]: With dead ends: 247 [2023-02-18 20:10:14,879 INFO L226 Difference]: Without dead ends: 247 [2023-02-18 20:10:14,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2023-02-18 20:10:14,880 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 266 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 20:10:14,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 92 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 20:10:14,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-02-18 20:10:14,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 179. [2023-02-18 20:10:14,882 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) [2023-02-18 20:10:14,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 225 transitions. [2023-02-18 20:10:14,883 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 225 transitions. Word has length 28 [2023-02-18 20:10:14,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:10:14,883 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 225 transitions. [2023-02-18 20:10:14,883 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) [2023-02-18 20:10:14,883 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 225 transitions. [2023-02-18 20:10:14,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-18 20:10:14,883 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:10:14,883 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] [2023-02-18 20:10:14,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-02-18 20:10:15,090 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 [2023-02-18 20:10:15,090 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)] === [2023-02-18 20:10:15,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:10:15,091 INFO L85 PathProgramCache]: Analyzing trace with hash -335257990, now seen corresponding path program 1 times [2023-02-18 20:10:15,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:10:15,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019096612] [2023-02-18 20:10:15,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:10:15,092 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:10:15,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:10:15,093 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) [2023-02-18 20:10:15,095 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 [2023-02-18 20:10:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:10:15,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-18 20:10:15,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:10:21,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-18 20:10:21,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:10:21,255 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:10:21,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019096612] [2023-02-18 20:10:21,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019096612] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:10:21,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:10:21,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 20:10:21,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859465311] [2023-02-18 20:10:21,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:10:21,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 20:10:21,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:10:21,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 20:10:21,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2023-02-18 20:10:21,256 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) [2023-02-18 20:10:23,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 20:10:25,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 20:10:27,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 20:10:29,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 20:10:31,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 20:10:33,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 20:10:35,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 20:10:37,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 20:10:39,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 20:10:39,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:10:39,945 INFO L93 Difference]: Finished difference Result 178 states and 224 transitions. [2023-02-18 20:10:39,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 20:10:39,947 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 [2023-02-18 20:10:39,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:10:39,948 INFO L225 Difference]: With dead ends: 178 [2023-02-18 20:10:39,948 INFO L226 Difference]: Without dead ends: 159 [2023-02-18 20:10:39,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2023-02-18 20:10:39,948 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 31 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2023-02-18 20:10:39,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 161 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 10 Unknown, 0 Unchecked, 18.7s Time] [2023-02-18 20:10:39,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-02-18 20:10:39,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-02-18 20:10:39,951 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) [2023-02-18 20:10:39,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 202 transitions. [2023-02-18 20:10:39,951 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 202 transitions. Word has length 28 [2023-02-18 20:10:39,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:10:39,951 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 202 transitions. [2023-02-18 20:10:39,951 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) [2023-02-18 20:10:39,951 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 202 transitions. [2023-02-18 20:10:39,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-18 20:10:39,952 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:10:39,952 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] [2023-02-18 20:10:39,960 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 [2023-02-18 20:10:40,160 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 [2023-02-18 20:10:40,161 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:10:40,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:10:40,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1430352431, now seen corresponding path program 1 times [2023-02-18 20:10:40,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:10:40,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010111542] [2023-02-18 20:10:40,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:10:40,162 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:10:40,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:10:40,163 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:10:40,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-02-18 20:10:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:10:40,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 20:10:40,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:10:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 20:10:40,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:10:40,319 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 45 treesize of output 41 [2023-02-18 20:10:40,382 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 20:10:40,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:10:40,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010111542] [2023-02-18 20:10:40,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010111542] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:10:40,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:10:40,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-02-18 20:10:40,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724747757] [2023-02-18 20:10:40,383 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:10:40,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 20:10:40,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:10:40,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 20:10:40,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-02-18 20:10:40,383 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) [2023-02-18 20:10:41,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:10:41,318 INFO L93 Difference]: Finished difference Result 389 states and 502 transitions. [2023-02-18 20:10:41,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-18 20:10:41,319 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 [2023-02-18 20:10:41,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:10:41,320 INFO L225 Difference]: With dead ends: 389 [2023-02-18 20:10:41,320 INFO L226 Difference]: Without dead ends: 389 [2023-02-18 20:10:41,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-02-18 20:10:41,320 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 356 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-18 20:10:41,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 156 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-18 20:10:41,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-02-18 20:10:41,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 165. [2023-02-18 20:10:41,323 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) [2023-02-18 20:10:41,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 209 transitions. [2023-02-18 20:10:41,324 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 209 transitions. Word has length 31 [2023-02-18 20:10:41,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:10:41,324 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 209 transitions. [2023-02-18 20:10:41,324 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) [2023-02-18 20:10:41,324 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 209 transitions. [2023-02-18 20:10:41,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-18 20:10:41,324 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:10:41,324 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] [2023-02-18 20:10:41,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-02-18 20:10:41,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:10:41,536 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:10:41,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:10:41,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1391261449, now seen corresponding path program 1 times [2023-02-18 20:10:41,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:10:41,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986503144] [2023-02-18 20:10:41,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:10:41,537 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:10:41,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:10:41,543 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:10:41,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-02-18 20:10:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:10:41,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 20:10:41,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:10:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-18 20:10:41,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:10:41,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:10:41,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986503144] [2023-02-18 20:10:41,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986503144] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:10:41,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:10:41,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 20:10:41,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966525627] [2023-02-18 20:10:41,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:10:41,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 20:10:41,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:10:41,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 20:10:41,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 20:10:41,663 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) [2023-02-18 20:10:41,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:10:41,673 INFO L93 Difference]: Finished difference Result 165 states and 206 transitions. [2023-02-18 20:10:41,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 20:10:41,673 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 [2023-02-18 20:10:41,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:10:41,674 INFO L225 Difference]: With dead ends: 165 [2023-02-18 20:10:41,674 INFO L226 Difference]: Without dead ends: 165 [2023-02-18 20:10:41,675 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 [2023-02-18 20:10:41,675 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 [2023-02-18 20:10:41,678 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] [2023-02-18 20:10:41,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-02-18 20:10:41,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2023-02-18 20:10:41,685 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) [2023-02-18 20:10:41,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 206 transitions. [2023-02-18 20:10:41,686 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 206 transitions. Word has length 32 [2023-02-18 20:10:41,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:10:41,686 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 206 transitions. [2023-02-18 20:10:41,686 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) [2023-02-18 20:10:41,686 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 206 transitions. [2023-02-18 20:10:41,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-18 20:10:41,687 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:10:41,687 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] [2023-02-18 20:10:41,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-02-18 20:10:41,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:10:41,896 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:10:41,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:10:41,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1391252418, now seen corresponding path program 1 times [2023-02-18 20:10:41,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:10:41,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297133299] [2023-02-18 20:10:41,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:10:41,897 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:10:41,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:10:41,899 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:10:41,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-02-18 20:10:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:10:41,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 20:10:41,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:10:42,003 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 20:10:42,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:10:42,045 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 45 treesize of output 41 [2023-02-18 20:10:42,089 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 20:10:42,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:10:42,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297133299] [2023-02-18 20:10:42,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297133299] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:10:42,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:10:42,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-02-18 20:10:42,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290564074] [2023-02-18 20:10:42,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:10:42,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 20:10:42,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:10:42,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 20:10:42,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-02-18 20:10:42,091 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) [2023-02-18 20:10:43,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:10:43,030 INFO L93 Difference]: Finished difference Result 626 states and 789 transitions. [2023-02-18 20:10:43,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-18 20:10:43,031 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 [2023-02-18 20:10:43,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:10:43,033 INFO L225 Difference]: With dead ends: 626 [2023-02-18 20:10:43,033 INFO L226 Difference]: Without dead ends: 626 [2023-02-18 20:10:43,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2023-02-18 20:10:43,033 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 1038 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-18 20:10:43,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 151 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-18 20:10:43,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-02-18 20:10:43,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 226. [2023-02-18 20:10:43,038 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) [2023-02-18 20:10:43,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 293 transitions. [2023-02-18 20:10:43,038 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 293 transitions. Word has length 32 [2023-02-18 20:10:43,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:10:43,039 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 293 transitions. [2023-02-18 20:10:43,039 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) [2023-02-18 20:10:43,039 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 293 transitions. [2023-02-18 20:10:43,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-18 20:10:43,039 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:10:43,039 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:10:43,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-02-18 20:10:43,240 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 [2023-02-18 20:10:43,240 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:10:43,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:10:43,240 INFO L85 PathProgramCache]: Analyzing trace with hash 155161166, now seen corresponding path program 3 times [2023-02-18 20:10:43,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:10:43,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498667705] [2023-02-18 20:10:43,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 20:10:43,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:10:43,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:10:43,242 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) [2023-02-18 20:10:43,242 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 [2023-02-18 20:10:43,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-18 20:10:43,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 20:10:43,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-18 20:10:43,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:10:43,405 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 [2023-02-18 20:10:43,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:10:43,451 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:10:43,451 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 30 treesize of output 64 [2023-02-18 20:10:43,457 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 [2023-02-18 20:10:43,540 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:10:43,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:10:43,974 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 [2023-02-18 20:10:44,332 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 20:10:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:10:44,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:10:44,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498667705] [2023-02-18 20:10:44,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1498667705] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:10:44,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:10:44,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2023-02-18 20:10:44,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697989521] [2023-02-18 20:10:44,336 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:10:44,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-18 20:10:44,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:10:44,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-18 20:10:44,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2023-02-18 20:10:44,337 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) [2023-02-18 20:10:46,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:10:46,787 INFO L93 Difference]: Finished difference Result 346 states and 437 transitions. [2023-02-18 20:10:46,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-18 20:10:46,789 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 [2023-02-18 20:10:46,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:10:46,789 INFO L225 Difference]: With dead ends: 346 [2023-02-18 20:10:46,790 INFO L226 Difference]: Without dead ends: 324 [2023-02-18 20:10:46,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=340, Invalid=1066, Unknown=0, NotChecked=0, Total=1406 [2023-02-18 20:10:46,790 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 626 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-02-18 20:10:46,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 332 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-02-18 20:10:46,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-02-18 20:10:46,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 301. [2023-02-18 20:10:46,793 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) [2023-02-18 20:10:46,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 385 transitions. [2023-02-18 20:10:46,794 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 385 transitions. Word has length 32 [2023-02-18 20:10:46,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:10:46,794 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 385 transitions. [2023-02-18 20:10:46,795 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) [2023-02-18 20:10:46,795 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 385 transitions. [2023-02-18 20:10:46,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-18 20:10:46,795 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:10:46,795 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:10:46,805 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 [2023-02-18 20:10:47,007 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 [2023-02-18 20:10:47,008 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:10:47,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:10:47,008 INFO L85 PathProgramCache]: Analyzing trace with hash 646893308, now seen corresponding path program 1 times [2023-02-18 20:10:47,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:10:47,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140577920] [2023-02-18 20:10:47,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:10:47,009 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:10:47,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:10:47,010 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:10:47,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-02-18 20:10:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:10:47,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 20:10:47,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:10:47,121 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-18 20:10:47,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:10:47,143 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-18 20:10:47,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:10:47,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140577920] [2023-02-18 20:10:47,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140577920] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:10:47,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:10:47,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-18 20:10:47,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596517777] [2023-02-18 20:10:47,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:10:47,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 20:10:47,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:10:47,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 20:10:47,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-18 20:10:47,144 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) [2023-02-18 20:10:47,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:10:47,362 INFO L93 Difference]: Finished difference Result 278 states and 350 transitions. [2023-02-18 20:10:47,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 20:10:47,363 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 [2023-02-18 20:10:47,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:10:47,363 INFO L225 Difference]: With dead ends: 278 [2023-02-18 20:10:47,364 INFO L226 Difference]: Without dead ends: 273 [2023-02-18 20:10:47,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-18 20:10:47,364 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 43 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 20:10:47,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 128 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 20:10:47,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-02-18 20:10:47,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 265. [2023-02-18 20:10:47,367 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) [2023-02-18 20:10:47,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 335 transitions. [2023-02-18 20:10:47,367 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 335 transitions. Word has length 35 [2023-02-18 20:10:47,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:10:47,367 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 335 transitions. [2023-02-18 20:10:47,367 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) [2023-02-18 20:10:47,367 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 335 transitions. [2023-02-18 20:10:47,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-18 20:10:47,368 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:10:47,368 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:10:47,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-02-18 20:10:47,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:10:47,569 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:10:47,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:10:47,569 INFO L85 PathProgramCache]: Analyzing trace with hash 770896954, now seen corresponding path program 2 times [2023-02-18 20:10:47,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:10:47,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341516732] [2023-02-18 20:10:47,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 20:10:47,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:10:47,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:10:47,571 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:10:47,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-02-18 20:10:47,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-18 20:10:47,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 20:10:47,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-18 20:10:47,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:10:47,659 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:10:47,660 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 31 [2023-02-18 20:10:47,663 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 [2023-02-18 20:10:47,749 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-02-18 20:10:47,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:10:47,901 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 20:10:47,904 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-02-18 20:10:47,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:10:47,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341516732] [2023-02-18 20:10:47,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341516732] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:10:47,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:10:47,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2023-02-18 20:10:47,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362690486] [2023-02-18 20:10:47,905 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:10:47,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 20:10:47,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:10:47,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 20:10:47,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-18 20:10:47,905 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) [2023-02-18 20:10:48,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:10:48,429 INFO L93 Difference]: Finished difference Result 268 states and 334 transitions. [2023-02-18 20:10:48,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 20:10:48,430 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 [2023-02-18 20:10:48,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:10:48,431 INFO L225 Difference]: With dead ends: 268 [2023-02-18 20:10:48,431 INFO L226 Difference]: Without dead ends: 243 [2023-02-18 20:10:48,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-02-18 20:10:48,431 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 137 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 59 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 [2023-02-18 20:10:48,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 59 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 20:10:48,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-02-18 20:10:48,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 215. [2023-02-18 20:10:48,442 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) [2023-02-18 20:10:48,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 274 transitions. [2023-02-18 20:10:48,442 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 274 transitions. Word has length 37 [2023-02-18 20:10:48,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:10:48,442 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 274 transitions. [2023-02-18 20:10:48,442 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) [2023-02-18 20:10:48,443 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 274 transitions. [2023-02-18 20:10:48,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-18 20:10:48,443 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:10:48,443 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:10:48,449 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 [2023-02-18 20:10:48,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:10:48,649 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:10:48,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:10:48,650 INFO L85 PathProgramCache]: Analyzing trace with hash 601007766, now seen corresponding path program 4 times [2023-02-18 20:10:48,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:10:48,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283248654] [2023-02-18 20:10:48,650 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 20:10:48,650 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:10:48,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:10:48,652 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:10:48,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-02-18 20:10:48,790 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 20:10:48,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 20:10:48,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-18 20:10:48,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:10:48,829 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:10:48,830 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 29 [2023-02-18 20:10:48,891 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 32 treesize of output 26 [2023-02-18 20:10:48,937 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 20:10:48,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:10:49,469 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 20:10:49,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:10:49,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283248654] [2023-02-18 20:10:49,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283248654] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:10:49,470 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:10:49,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2023-02-18 20:10:49,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65959091] [2023-02-18 20:10:49,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:10:49,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-18 20:10:49,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:10:49,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-18 20:10:49,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2023-02-18 20:10:49,473 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) [2023-02-18 20:10:54,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:10:54,057 INFO L93 Difference]: Finished difference Result 552 states and 710 transitions. [2023-02-18 20:10:54,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-18 20:10:54,058 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 [2023-02-18 20:10:54,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:10:54,060 INFO L225 Difference]: With dead ends: 552 [2023-02-18 20:10:54,060 INFO L226 Difference]: Without dead ends: 510 [2023-02-18 20:10:54,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=449, Invalid=1531, Unknown=0, NotChecked=0, Total=1980 [2023-02-18 20:10:54,069 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 758 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-02-18 20:10:54,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 621 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-02-18 20:10:54,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2023-02-18 20:10:54,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 370. [2023-02-18 20:10:54,083 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) [2023-02-18 20:10:54,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 486 transitions. [2023-02-18 20:10:54,091 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 486 transitions. Word has length 40 [2023-02-18 20:10:54,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:10:54,091 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 486 transitions. [2023-02-18 20:10:54,092 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) [2023-02-18 20:10:54,092 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 486 transitions. [2023-02-18 20:10:54,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-18 20:10:54,092 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:10:54,092 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:10:54,100 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 [2023-02-18 20:10:54,294 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 [2023-02-18 20:10:54,294 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:10:54,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:10:54,295 INFO L85 PathProgramCache]: Analyzing trace with hash -528832743, now seen corresponding path program 5 times [2023-02-18 20:10:54,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:10:54,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744358207] [2023-02-18 20:10:54,295 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 20:10:54,295 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:10:54,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:10:54,296 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) [2023-02-18 20:10:54,299 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 [2023-02-18 20:10:54,586 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-02-18 20:10:54,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 20:10:54,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-18 20:10:54,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:10:54,601 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 [2023-02-18 20:10:54,630 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 19 treesize of output 15 [2023-02-18 20:10:54,752 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 21 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 20:10:54,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:10:55,340 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 22 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 20:10:55,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:10:55,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744358207] [2023-02-18 20:10:55,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744358207] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:10:55,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:10:55,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2023-02-18 20:10:55,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149342483] [2023-02-18 20:10:55,341 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:10:55,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-18 20:10:55,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:10:55,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-18 20:10:55,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2023-02-18 20:10:55,342 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) [2023-02-18 20:10:57,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:10:57,475 INFO L93 Difference]: Finished difference Result 776 states and 1021 transitions. [2023-02-18 20:10:57,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-18 20:10:57,475 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 [2023-02-18 20:10:57,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:10:57,477 INFO L225 Difference]: With dead ends: 776 [2023-02-18 20:10:57,477 INFO L226 Difference]: Without dead ends: 771 [2023-02-18 20:10:57,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=356, Invalid=1536, Unknown=0, NotChecked=0, Total=1892 [2023-02-18 20:10:57,478 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 947 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-02-18 20:10:57,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 935 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-02-18 20:10:57,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2023-02-18 20:10:57,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 637. [2023-02-18 20:10:57,484 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) [2023-02-18 20:10:57,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 847 transitions. [2023-02-18 20:10:57,487 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 847 transitions. Word has length 44 [2023-02-18 20:10:57,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:10:57,487 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 847 transitions. [2023-02-18 20:10:57,487 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) [2023-02-18 20:10:57,487 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 847 transitions. [2023-02-18 20:10:57,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-18 20:10:57,487 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:10:57,488 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] [2023-02-18 20:10:57,496 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 [2023-02-18 20:10:57,696 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 [2023-02-18 20:10:57,696 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:10:57,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:10:57,696 INFO L85 PathProgramCache]: Analyzing trace with hash -484234273, now seen corresponding path program 1 times [2023-02-18 20:10:57,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:10:57,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221333505] [2023-02-18 20:10:57,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:10:57,697 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:10:57,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:10:57,698 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) [2023-02-18 20:10:57,699 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 [2023-02-18 20:10:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:10:57,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-18 20:10:57,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:10:57,872 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 [2023-02-18 20:10:57,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 20:10:57,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:10:57,910 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:10:57,910 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 30 treesize of output 64 [2023-02-18 20:10:57,916 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:10:57,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-18 20:10:58,086 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-18 20:10:58,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:10:59,453 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 20:10:59,456 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 20:10:59,459 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 20:10:59,461 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 20:10:59,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:10:59,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221333505] [2023-02-18 20:10:59,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221333505] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:10:59,462 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:10:59,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-02-18 20:10:59,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582230409] [2023-02-18 20:10:59,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:10:59,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-18 20:10:59,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:10:59,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-18 20:10:59,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-02-18 20:10:59,463 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) [2023-02-18 20:11:00,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:11:00,766 INFO L93 Difference]: Finished difference Result 753 states and 1001 transitions. [2023-02-18 20:11:00,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 20:11:00,767 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 [2023-02-18 20:11:00,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:11:00,769 INFO L225 Difference]: With dead ends: 753 [2023-02-18 20:11:00,769 INFO L226 Difference]: Without dead ends: 753 [2023-02-18 20:11:00,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2023-02-18 20:11:00,769 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 797 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-18 20:11:00,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 186 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-18 20:11:00,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-02-18 20:11:00,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 645. [2023-02-18 20:11:00,775 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) [2023-02-18 20:11:00,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 855 transitions. [2023-02-18 20:11:00,776 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 855 transitions. Word has length 45 [2023-02-18 20:11:00,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:11:00,776 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 855 transitions. [2023-02-18 20:11:00,776 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) [2023-02-18 20:11:00,776 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 855 transitions. [2023-02-18 20:11:00,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-18 20:11:00,776 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:11:00,776 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1] [2023-02-18 20:11:00,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-02-18 20:11:00,976 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 [2023-02-18 20:11:00,977 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:11:00,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:11:00,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1048882662, now seen corresponding path program 3 times [2023-02-18 20:11:00,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:11:00,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381560599] [2023-02-18 20:11:00,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 20:11:00,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:11:00,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:11:00,979 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) [2023-02-18 20:11:00,979 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 [2023-02-18 20:11:01,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-18 20:11:01,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 20:11:01,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-18 20:11:01,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:11:01,183 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 [2023-02-18 20:11:01,355 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:11:01,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:11:02,678 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:11:02,678 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:11:02,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381560599] [2023-02-18 20:11:02,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381560599] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:11:02,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:11:02,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2023-02-18 20:11:02,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431644690] [2023-02-18 20:11:02,678 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:11:02,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-02-18 20:11:02,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:11:02,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-02-18 20:11:02,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=637, Unknown=0, NotChecked=0, Total=870 [2023-02-18 20:11:02,679 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) [2023-02-18 20:11:04,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:11:06,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:11:09,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:11:12,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:11:15,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:11:17,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:11:20,342 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 [] [2023-02-18 20:11:29,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:11:29,476 INFO L93 Difference]: Finished difference Result 1883 states and 2479 transitions. [2023-02-18 20:11:29,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-02-18 20:11:29,478 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 [2023-02-18 20:11:29,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:11:29,481 INFO L225 Difference]: With dead ends: 1883 [2023-02-18 20:11:29,481 INFO L226 Difference]: Without dead ends: 1883 [2023-02-18 20:11:29,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1240, Invalid=2666, Unknown=0, NotChecked=0, Total=3906 [2023-02-18 20:11:29,483 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 2422 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 93 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2422 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 1878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1779 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2023-02-18 20:11:29,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2422 Valid, 1552 Invalid, 1878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1779 Invalid, 6 Unknown, 0 Unchecked, 21.0s Time] [2023-02-18 20:11:29,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2023-02-18 20:11:29,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 693. [2023-02-18 20:11:29,491 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) [2023-02-18 20:11:29,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 915 transitions. [2023-02-18 20:11:29,492 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 915 transitions. Word has length 46 [2023-02-18 20:11:29,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:11:29,493 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 915 transitions. [2023-02-18 20:11:29,493 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) [2023-02-18 20:11:29,493 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 915 transitions. [2023-02-18 20:11:29,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-18 20:11:29,493 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:11:29,493 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] [2023-02-18 20:11:29,517 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 [2023-02-18 20:11:29,701 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 [2023-02-18 20:11:29,702 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:11:29,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:11:29,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1686115654, now seen corresponding path program 1 times [2023-02-18 20:11:29,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:11:29,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363995763] [2023-02-18 20:11:29,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:11:29,703 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:11:29,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:11:29,704 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) [2023-02-18 20:11:29,705 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 [2023-02-18 20:11:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:11:29,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-18 20:11:29,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:11:29,881 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 20:11:29,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:11:30,126 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 75 treesize of output 69 [2023-02-18 20:11:30,243 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 20:11:30,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:11:30,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363995763] [2023-02-18 20:11:30,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363995763] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:11:30,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:11:30,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-02-18 20:11:30,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633285081] [2023-02-18 20:11:30,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:11:30,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-18 20:11:30,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:11:30,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-18 20:11:30,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2023-02-18 20:11:30,245 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) [2023-02-18 20:11:36,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:11:36,395 INFO L93 Difference]: Finished difference Result 1689 states and 2241 transitions. [2023-02-18 20:11:36,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-18 20:11:36,396 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 [2023-02-18 20:11:36,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:11:36,399 INFO L225 Difference]: With dead ends: 1689 [2023-02-18 20:11:36,400 INFO L226 Difference]: Without dead ends: 1689 [2023-02-18 20:11:36,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=302, Invalid=1030, Unknown=0, NotChecked=0, Total=1332 [2023-02-18 20:11:36,400 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 1213 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-02-18 20:11:36,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1213 Valid, 342 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-02-18 20:11:36,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2023-02-18 20:11:36,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 900. [2023-02-18 20:11:36,420 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) [2023-02-18 20:11:36,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1203 transitions. [2023-02-18 20:11:36,422 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1203 transitions. Word has length 46 [2023-02-18 20:11:36,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:11:36,422 INFO L495 AbstractCegarLoop]: Abstraction has 900 states and 1203 transitions. [2023-02-18 20:11:36,423 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) [2023-02-18 20:11:36,423 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1203 transitions. [2023-02-18 20:11:36,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-18 20:11:36,423 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:11:36,424 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] [2023-02-18 20:11:36,434 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 [2023-02-18 20:11:36,632 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 [2023-02-18 20:11:36,632 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:11:36,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:11:36,633 INFO L85 PathProgramCache]: Analyzing trace with hash -2126360568, now seen corresponding path program 1 times [2023-02-18 20:11:36,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:11:36,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384732246] [2023-02-18 20:11:36,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:11:36,633 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:11:36,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:11:36,634 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) [2023-02-18 20:11:36,637 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 [2023-02-18 20:11:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:11:36,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-18 20:11:36,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:11:36,805 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-18 20:11:36,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:11:36,843 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 45 treesize of output 41 [2023-02-18 20:11:36,923 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-18 20:11:36,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:11:36,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384732246] [2023-02-18 20:11:36,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384732246] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:11:36,924 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:11:36,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-02-18 20:11:36,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445607670] [2023-02-18 20:11:36,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:11:36,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 20:11:36,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:11:36,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 20:11:36,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-02-18 20:11:36,925 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) [2023-02-18 20:11:37,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:11:37,465 INFO L93 Difference]: Finished difference Result 1116 states and 1410 transitions. [2023-02-18 20:11:37,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 20:11:37,466 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 [2023-02-18 20:11:37,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:11:37,468 INFO L225 Difference]: With dead ends: 1116 [2023-02-18 20:11:37,468 INFO L226 Difference]: Without dead ends: 1116 [2023-02-18 20:11:37,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=336, Unknown=0, NotChecked=0, Total=506 [2023-02-18 20:11:37,474 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 472 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 20:11:37,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 156 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 20:11:37,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2023-02-18 20:11:37,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 900. [2023-02-18 20:11:37,513 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) [2023-02-18 20:11:37,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1162 transitions. [2023-02-18 20:11:37,515 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1162 transitions. Word has length 46 [2023-02-18 20:11:37,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:11:37,515 INFO L495 AbstractCegarLoop]: Abstraction has 900 states and 1162 transitions. [2023-02-18 20:11:37,515 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) [2023-02-18 20:11:37,515 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1162 transitions. [2023-02-18 20:11:37,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-18 20:11:37,516 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:11:37,516 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:11:37,526 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 [2023-02-18 20:11:37,716 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 [2023-02-18 20:11:37,717 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:11:37,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:11:37,717 INFO L85 PathProgramCache]: Analyzing trace with hash 274247196, now seen corresponding path program 6 times [2023-02-18 20:11:37,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:11:37,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288741029] [2023-02-18 20:11:37,717 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 20:11:37,717 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 [2023-02-18 20:11:37,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:11:37,718 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) [2023-02-18 20:11:37,720 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 [2023-02-18 20:11:37,967 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-02-18 20:11:37,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 20:11:37,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-18 20:11:37,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:11:37,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:11:37,985 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 [2023-02-18 20:11:37,988 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 [2023-02-18 20:11:38,079 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-18 20:11:38,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:11:38,654 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 20:11:38,729 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-18 20:11:38,730 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:11:38,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288741029] [2023-02-18 20:11:38,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288741029] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:11:38,730 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:11:38,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-02-18 20:11:38,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701095673] [2023-02-18 20:11:38,730 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:11:38,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-18 20:11:38,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:11:38,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-18 20:11:38,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2023-02-18 20:11:38,732 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) [2023-02-18 20:11:42,349 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 [] [2023-02-18 20:11:44,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:11:46,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:11:48,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:11:51,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:11:52,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:11:54,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:11:57,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:11:59,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:12:01,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:12:03,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:12:06,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:12:08,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:12:08,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:12:08,776 INFO L93 Difference]: Finished difference Result 2492 states and 3218 transitions. [2023-02-18 20:12:08,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-18 20:12:08,777 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 [2023-02-18 20:12:08,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:12:08,782 INFO L225 Difference]: With dead ends: 2492 [2023-02-18 20:12:08,782 INFO L226 Difference]: Without dead ends: 2463 [2023-02-18 20:12:08,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=538, Invalid=1442, Unknown=0, NotChecked=0, Total=1980 [2023-02-18 20:12:08,783 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 1608 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 155 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.6s IncrementalHoareTripleChecker+Time [2023-02-18 20:12:08,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1608 Valid, 604 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1302 Invalid, 4 Unknown, 0 Unchecked, 28.6s Time] [2023-02-18 20:12:08,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2463 states. [2023-02-18 20:12:08,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2463 to 1798. [2023-02-18 20:12:08,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1791 states have (on average 1.315466219988833) internal successors, (2356), 1797 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:12:08,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2356 transitions. [2023-02-18 20:12:08,799 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2356 transitions. Word has length 48 [2023-02-18 20:12:08,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:12:08,800 INFO L495 AbstractCegarLoop]: Abstraction has 1798 states and 2356 transitions. [2023-02-18 20:12:08,800 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) [2023-02-18 20:12:08,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2356 transitions. [2023-02-18 20:12:08,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-18 20:12:08,800 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:12:08,801 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] [2023-02-18 20:12:08,810 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 [2023-02-18 20:12:09,009 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 [2023-02-18 20:12:09,010 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:12:09,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:12:09,010 INFO L85 PathProgramCache]: Analyzing trace with hash 971260211, now seen corresponding path program 2 times [2023-02-18 20:12:09,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:12:09,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762695364] [2023-02-18 20:12:09,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 20:12:09,010 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 [2023-02-18 20:12:09,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:12:09,011 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) [2023-02-18 20:12:09,012 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 [2023-02-18 20:12:09,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-18 20:12:09,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 20:12:09,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-18 20:12:09,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:12:09,115 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 [2023-02-18 20:12:09,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 20:12:09,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:12:09,129 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:12:09,129 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 55 [2023-02-18 20:12:09,135 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:12:09,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-18 20:12:09,217 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-02-18 20:12:09,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:12:09,639 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 20:12:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-02-18 20:12:09,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:12:09,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762695364] [2023-02-18 20:12:09,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762695364] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:12:09,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:12:09,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-02-18 20:12:09,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789082667] [2023-02-18 20:12:09,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:12:09,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 20:12:09,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:12:09,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 20:12:09,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-02-18 20:12:09,786 INFO L87 Difference]: Start difference. First operand 1798 states and 2356 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) [2023-02-18 20:12:10,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:12:10,475 INFO L93 Difference]: Finished difference Result 1847 states and 2370 transitions. [2023-02-18 20:12:10,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 20:12:10,477 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 [2023-02-18 20:12:10,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:12:10,480 INFO L225 Difference]: With dead ends: 1847 [2023-02-18 20:12:10,480 INFO L226 Difference]: Without dead ends: 1847 [2023-02-18 20:12:10,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2023-02-18 20:12:10,481 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 319 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 20:12:10,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 57 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 20:12:10,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2023-02-18 20:12:10,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1789. [2023-02-18 20:12:10,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1789 states, 1783 states have (on average 1.2938867077958498) internal successors, (2307), 1788 states have internal predecessors, (2307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:12:10,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1789 states to 1789 states and 2307 transitions. [2023-02-18 20:12:10,496 INFO L78 Accepts]: Start accepts. Automaton has 1789 states and 2307 transitions. Word has length 48 [2023-02-18 20:12:10,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:12:10,496 INFO L495 AbstractCegarLoop]: Abstraction has 1789 states and 2307 transitions. [2023-02-18 20:12:10,496 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) [2023-02-18 20:12:10,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1789 states and 2307 transitions. [2023-02-18 20:12:10,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-18 20:12:10,497 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:12:10,497 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] [2023-02-18 20:12:10,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2023-02-18 20:12:10,705 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 [2023-02-18 20:12:10,705 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:12:10,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:12:10,706 INFO L85 PathProgramCache]: Analyzing trace with hash 2107734792, now seen corresponding path program 2 times [2023-02-18 20:12:10,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:12:10,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843778842] [2023-02-18 20:12:10,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 20:12:10,706 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:12:10,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:12:10,707 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) [2023-02-18 20:12:10,712 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 [2023-02-18 20:12:10,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 20:12:10,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 20:12:10,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 20:12:10,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:12:10,932 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-02-18 20:12:10,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:12:11,047 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-02-18 20:12:11,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:12:11,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843778842] [2023-02-18 20:12:11,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843778842] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:12:11,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:12:11,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-02-18 20:12:11,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489479445] [2023-02-18 20:12:11,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:12:11,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 20:12:11,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:12:11,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 20:12:11,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-02-18 20:12:11,049 INFO L87 Difference]: Start difference. First operand 1789 states and 2307 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) [2023-02-18 20:12:11,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:12:11,514 INFO L93 Difference]: Finished difference Result 1859 states and 2350 transitions. [2023-02-18 20:12:11,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 20:12:11,515 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 [2023-02-18 20:12:11,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:12:11,518 INFO L225 Difference]: With dead ends: 1859 [2023-02-18 20:12:11,518 INFO L226 Difference]: Without dead ends: 1859 [2023-02-18 20:12:11,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-02-18 20:12:11,519 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 153 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 20:12:11,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 236 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 20:12:11,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1859 states. [2023-02-18 20:12:11,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1859 to 1797. [2023-02-18 20:12:11,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1791 states have (on average 1.273031825795645) internal successors, (2280), 1796 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:12:11,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2280 transitions. [2023-02-18 20:12:11,533 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2280 transitions. Word has length 60 [2023-02-18 20:12:11,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:12:11,533 INFO L495 AbstractCegarLoop]: Abstraction has 1797 states and 2280 transitions. [2023-02-18 20:12:11,533 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) [2023-02-18 20:12:11,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2280 transitions. [2023-02-18 20:12:11,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-02-18 20:12:11,534 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:12:11,535 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] [2023-02-18 20:12:11,543 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 [2023-02-18 20:12:11,743 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 [2023-02-18 20:12:11,743 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:12:11,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:12:11,743 INFO L85 PathProgramCache]: Analyzing trace with hash -370900910, now seen corresponding path program 2 times [2023-02-18 20:12:11,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:12:11,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865424734] [2023-02-18 20:12:11,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 20:12:11,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:12:11,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:12:11,765 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) [2023-02-18 20:12:11,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-02-18 20:12:11,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 20:12:11,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 20:12:11,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-18 20:12:11,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:12:11,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:12:11,968 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 [2023-02-18 20:12:11,970 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 [2023-02-18 20:12:12,091 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-02-18 20:12:12,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:12:12,737 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 20:12:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 38 proven. 36 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-02-18 20:12:12,739 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:12:12,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865424734] [2023-02-18 20:12:12,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865424734] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:12:12,740 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:12:12,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2023-02-18 20:12:12,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933874930] [2023-02-18 20:12:12,740 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:12:12,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-18 20:12:12,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:12:12,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-18 20:12:12,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2023-02-18 20:12:12,741 INFO L87 Difference]: Start difference. First operand 1797 states and 2280 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) [2023-02-18 20:12:16,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:12:20,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:12:20,588 INFO L93 Difference]: Finished difference Result 4442 states and 5694 transitions. [2023-02-18 20:12:20,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-18 20:12:20,588 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 [2023-02-18 20:12:20,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:12:20,597 INFO L225 Difference]: With dead ends: 4442 [2023-02-18 20:12:20,597 INFO L226 Difference]: Without dead ends: 4442 [2023-02-18 20:12:20,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=449, Invalid=1713, Unknown=0, NotChecked=0, Total=2162 [2023-02-18 20:12:20,598 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 1245 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-02-18 20:12:20,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1245 Valid, 629 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-02-18 20:12:20,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4442 states. [2023-02-18 20:12:20,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4442 to 2735. [2023-02-18 20:12:20,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2735 states, 2729 states have (on average 1.2942469769146208) internal successors, (3532), 2734 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:12:20,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 3532 transitions. [2023-02-18 20:12:20,647 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 3532 transitions. Word has length 70 [2023-02-18 20:12:20,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:12:20,647 INFO L495 AbstractCegarLoop]: Abstraction has 2735 states and 3532 transitions. [2023-02-18 20:12:20,647 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) [2023-02-18 20:12:20,648 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 3532 transitions. [2023-02-18 20:12:20,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-02-18 20:12:20,648 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:12:20,649 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:12:20,668 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 [2023-02-18 20:12:20,858 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 [2023-02-18 20:12:20,858 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:12:20,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:12:20,859 INFO L85 PathProgramCache]: Analyzing trace with hash -711047092, now seen corresponding path program 3 times [2023-02-18 20:12:20,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:12:20,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912880816] [2023-02-18 20:12:20,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 20:12:20,859 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:12:20,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:12:20,861 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) [2023-02-18 20:12:20,865 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 [2023-02-18 20:12:21,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-18 20:12:21,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 20:12:21,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-18 20:12:21,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:12:21,048 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 [2023-02-18 20:12:21,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-02-18 20:12:21,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2023-02-18 20:12:21,245 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-02-18 20:12:21,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:12:21,448 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 20:12:21,510 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-02-18 20:12:21,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:12:21,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912880816] [2023-02-18 20:12:21,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1912880816] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:12:21,510 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:12:21,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-02-18 20:12:21,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999206455] [2023-02-18 20:12:21,511 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:12:21,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-18 20:12:21,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:12:21,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-18 20:12:21,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-02-18 20:12:21,512 INFO L87 Difference]: Start difference. First operand 2735 states and 3532 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 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) [2023-02-18 20:12:23,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:12:23,448 INFO L93 Difference]: Finished difference Result 5455 states and 7089 transitions. [2023-02-18 20:12:23,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-18 20:12:23,449 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 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 70 [2023-02-18 20:12:23,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:12:23,460 INFO L225 Difference]: With dead ends: 5455 [2023-02-18 20:12:23,460 INFO L226 Difference]: Without dead ends: 5455 [2023-02-18 20:12:23,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2023-02-18 20:12:23,461 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 673 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-02-18 20:12:23,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 89 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-02-18 20:12:23,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5455 states. [2023-02-18 20:12:23,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5455 to 2733. [2023-02-18 20:12:23,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2727 states have (on average 1.2926292629262925) internal successors, (3525), 2732 states have internal predecessors, (3525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:12:23,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 3525 transitions. [2023-02-18 20:12:23,494 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 3525 transitions. Word has length 70 [2023-02-18 20:12:23,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:12:23,495 INFO L495 AbstractCegarLoop]: Abstraction has 2733 states and 3525 transitions. [2023-02-18 20:12:23,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 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) [2023-02-18 20:12:23,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 3525 transitions. [2023-02-18 20:12:23,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-02-18 20:12:23,496 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:12:23,496 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:12:23,509 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 [2023-02-18 20:12:23,704 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 [2023-02-18 20:12:23,704 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:12:23,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:12:23,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1746122625, now seen corresponding path program 7 times [2023-02-18 20:12:23,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:12:23,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053295456] [2023-02-18 20:12:23,705 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 20:12:23,705 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:12:23,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:12:23,707 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) [2023-02-18 20:12:23,707 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 [2023-02-18 20:12:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:12:23,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-18 20:12:23,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:12:23,973 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:12:23,974 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 29 [2023-02-18 20:12:24,163 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 30 treesize of output 24 [2023-02-18 20:12:24,165 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 155 proven. 100 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-02-18 20:12:24,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:12:25,054 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 163 proven. 92 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-02-18 20:12:25,054 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:12:25,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053295456] [2023-02-18 20:12:25,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053295456] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:12:25,054 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:12:25,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2023-02-18 20:12:25,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9441741] [2023-02-18 20:12:25,054 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:12:25,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-18 20:12:25,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:12:25,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-18 20:12:25,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=847, Unknown=0, NotChecked=0, Total=992 [2023-02-18 20:12:25,055 INFO L87 Difference]: Start difference. First operand 2733 states and 3525 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) [2023-02-18 20:12:56,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:12:56,220 INFO L93 Difference]: Finished difference Result 7477 states and 9595 transitions. [2023-02-18 20:12:56,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-02-18 20:12:56,221 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 [2023-02-18 20:12:56,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:12:56,241 INFO L225 Difference]: With dead ends: 7477 [2023-02-18 20:12:56,242 INFO L226 Difference]: Without dead ends: 7323 [2023-02-18 20:12:56,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=971, Invalid=4141, Unknown=0, NotChecked=0, Total=5112 [2023-02-18 20:12:56,243 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 6500 mSDsluCounter, 2675 mSDsCounter, 0 mSdLazyCounter, 4858 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6500 SdHoareTripleChecker+Valid, 2903 SdHoareTripleChecker+Invalid, 5019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 4858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time [2023-02-18 20:12:56,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6500 Valid, 2903 Invalid, 5019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 4858 Invalid, 0 Unknown, 0 Unchecked, 29.6s Time] [2023-02-18 20:12:56,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7323 states. [2023-02-18 20:12:56,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7323 to 4373. [2023-02-18 20:12:56,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4373 states, 4367 states have (on average 1.2979161896038471) internal successors, (5668), 4372 states have internal predecessors, (5668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:12:56,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4373 states to 4373 states and 5668 transitions. [2023-02-18 20:12:56,287 INFO L78 Accepts]: Start accepts. Automaton has 4373 states and 5668 transitions. Word has length 76 [2023-02-18 20:12:56,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:12:56,287 INFO L495 AbstractCegarLoop]: Abstraction has 4373 states and 5668 transitions. [2023-02-18 20:12:56,287 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) [2023-02-18 20:12:56,287 INFO L276 IsEmpty]: Start isEmpty. Operand 4373 states and 5668 transitions. [2023-02-18 20:12:56,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-02-18 20:12:56,289 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:12:56,289 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] [2023-02-18 20:12:56,315 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 [2023-02-18 20:12:56,499 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 [2023-02-18 20:12:56,499 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:12:56,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:12:56,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1773352908, now seen corresponding path program 3 times [2023-02-18 20:12:56,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:12:56,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386940337] [2023-02-18 20:12:56,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 20:12:56,501 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:12:56,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:12:56,502 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) [2023-02-18 20:12:56,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-02-18 20:12:56,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-18 20:12:56,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 20:12:56,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-18 20:12:56,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:12:56,671 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 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-18 20:12:56,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 20:12:56,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:12:56,686 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:12:56,686 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 55 [2023-02-18 20:12:56,692 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:12:56,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-18 20:12:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-02-18 20:12:56,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:12:57,795 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 20:12:57,798 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 20:12:57,801 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 20:12:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-02-18 20:12:57,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:12:57,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386940337] [2023-02-18 20:12:57,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386940337] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:12:57,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:12:57,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-02-18 20:12:57,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484913159] [2023-02-18 20:12:57,878 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:12:57,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-18 20:12:57,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:12:57,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-18 20:12:57,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2023-02-18 20:12:57,880 INFO L87 Difference]: Start difference. First operand 4373 states and 5668 transitions. Second operand has 19 states, 18 states have (on average 4.777777777777778) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:13:00,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:13:00,239 INFO L93 Difference]: Finished difference Result 9824 states and 12750 transitions. [2023-02-18 20:13:00,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-18 20:13:00,240 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.777777777777778) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 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 77 [2023-02-18 20:13:00,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:13:00,252 INFO L225 Difference]: With dead ends: 9824 [2023-02-18 20:13:00,253 INFO L226 Difference]: Without dead ends: 9824 [2023-02-18 20:13:00,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=319, Invalid=737, Unknown=0, NotChecked=0, Total=1056 [2023-02-18 20:13:00,253 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 841 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-02-18 20:13:00,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 163 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-02-18 20:13:00,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9824 states. [2023-02-18 20:13:00,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9824 to 9014. [2023-02-18 20:13:00,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9014 states, 9008 states have (on average 1.2918516873889876) internal successors, (11637), 9013 states have internal predecessors, (11637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:13:00,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9014 states to 9014 states and 11637 transitions. [2023-02-18 20:13:00,352 INFO L78 Accepts]: Start accepts. Automaton has 9014 states and 11637 transitions. Word has length 77 [2023-02-18 20:13:00,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:13:00,354 INFO L495 AbstractCegarLoop]: Abstraction has 9014 states and 11637 transitions. [2023-02-18 20:13:00,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.777777777777778) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:13:00,354 INFO L276 IsEmpty]: Start isEmpty. Operand 9014 states and 11637 transitions. [2023-02-18 20:13:00,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-02-18 20:13:00,356 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:13:00,356 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:13:00,384 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 [2023-02-18 20:13:00,566 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 [2023-02-18 20:13:00,566 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)] === [2023-02-18 20:13:00,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:13:00,567 INFO L85 PathProgramCache]: Analyzing trace with hash 796230530, now seen corresponding path program 8 times [2023-02-18 20:13:00,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:13:00,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078013094] [2023-02-18 20:13:00,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 20:13:00,568 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 [2023-02-18 20:13:00,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:13:00,569 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) [2023-02-18 20:13:00,572 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 [2023-02-18 20:13:00,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 20:13:00,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 20:13:00,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-18 20:13:00,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:13:00,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:13:00,889 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 [2023-02-18 20:13:00,891 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 [2023-02-18 20:13:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 150 proven. 164 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-18 20:13:01,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:13:02,892 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 20:13:03,871 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:13:03,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:13:03,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078013094] [2023-02-18 20:13:03,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078013094] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:13:03,871 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:13:03,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 24] total 42 [2023-02-18 20:13:03,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052337059] [2023-02-18 20:13:03,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:13:03,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-02-18 20:13:03,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:13:03,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-02-18 20:13:03,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1529, Unknown=0, NotChecked=0, Total=1722 [2023-02-18 20:13:03,873 INFO L87 Difference]: Start difference. First operand 9014 states and 11637 transitions. Second operand has 42 states, 42 states have (on average 3.4047619047619047) internal successors, (143), 42 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:13:23,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:13:24,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:13:26,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:13:27,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:13:29,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:13:30,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:13:31,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:13:35,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:13:37,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:13:39,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:13:40,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:13:41,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:13:45,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:13:46,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:13:48,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:13:49,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:13:50,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:13:52,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:13:53,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:13:57,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:13:58,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:13:59,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:00,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:02,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:04,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:05,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:07,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:08,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:09,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:12,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:14,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:15,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:16,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:18,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:19,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:20,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:25,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:26,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:29,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:31,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:32,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:33,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:34,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:38,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:41,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:42,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:44,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:45,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:47,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:48,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:54,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:56,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:57,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:14:59,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:15:01,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:15:05,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:15:07,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:15:09,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:15:10,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:15:11,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:15:13,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:15:16,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:15:30,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:15:33,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:15:34,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:15:36,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:15:39,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:15:45,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:15:51,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:15:58,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:16:07,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:16:09,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:16:11,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:16:14,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:16:19,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:16:23,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:16:29,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:16:39,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:16:42,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:16:44,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:16:45,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:16:54,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:16:57,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:17:08,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:17:14,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:17:18,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:17:28,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:17:41,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:17:47,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:17:57,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:18:05,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:18:08,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:18:33,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:18:39,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:18:42,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:18:44,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:19:10,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:19:52,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:20:27,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:20:27,139 INFO L93 Difference]: Finished difference Result 147905 states and 193770 transitions. [2023-02-18 20:20:27,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 374 states. [2023-02-18 20:20:27,141 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.4047619047619047) internal successors, (143), 42 states have internal predecessors, (143), 0 states have call successors, (0), 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 80 [2023-02-18 20:20:27,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:20:27,523 INFO L225 Difference]: With dead ends: 147905 [2023-02-18 20:20:27,523 INFO L226 Difference]: Without dead ends: 147590 [2023-02-18 20:20:27,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 404 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63596 ImplicationChecksByTransitivity, 75.3s TimeCoverageRelationStatistics Valid=14612, Invalid=149818, Unknown=0, NotChecked=0, Total=164430 [2023-02-18 20:20:27,537 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 10994 mSDsluCounter, 10561 mSDsCounter, 0 mSdLazyCounter, 20739 mSolverCounterSat, 639 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 363.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10994 SdHoareTripleChecker+Valid, 11119 SdHoareTripleChecker+Invalid, 21380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 20739 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 369.0s IncrementalHoareTripleChecker+Time [2023-02-18 20:20:27,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10994 Valid, 11119 Invalid, 21380 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [639 Valid, 20739 Invalid, 2 Unknown, 0 Unchecked, 369.0s Time] [2023-02-18 20:20:27,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147590 states. [2023-02-18 20:20:28,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147590 to 76993. [2023-02-18 20:20:28,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76993 states, 76987 states have (on average 1.3245093327444892) internal successors, (101970), 76992 states have internal predecessors, (101970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:20:29,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76993 states to 76993 states and 101970 transitions. [2023-02-18 20:20:29,073 INFO L78 Accepts]: Start accepts. Automaton has 76993 states and 101970 transitions. Word has length 80 [2023-02-18 20:20:29,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:20:29,074 INFO L495 AbstractCegarLoop]: Abstraction has 76993 states and 101970 transitions. [2023-02-18 20:20:29,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.4047619047619047) internal successors, (143), 42 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:20:29,074 INFO L276 IsEmpty]: Start isEmpty. Operand 76993 states and 101970 transitions. [2023-02-18 20:20:29,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-02-18 20:20:29,154 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:20:29,154 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:20:29,174 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 (45)] Ended with exit code 0 [2023-02-18 20:20:29,354 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 [2023-02-18 20:20:29,354 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:20:29,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:20:29,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1786098566, now seen corresponding path program 1 times [2023-02-18 20:20:29,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:20:29,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525276902] [2023-02-18 20:20:29,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:20:29,356 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:20:29,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:20:29,360 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) [2023-02-18 20:20:29,385 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 [2023-02-18 20:20:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:20:29,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 20:20:29,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:20:29,684 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-18 20:20:29,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:20:29,704 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 45 treesize of output 41 [2023-02-18 20:20:30,066 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-18 20:20:30,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:20:30,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525276902] [2023-02-18 20:20:30,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525276902] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:20:30,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:20:30,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-02-18 20:20:30,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077367154] [2023-02-18 20:20:30,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:20:30,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-18 20:20:30,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:20:30,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-18 20:20:30,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2023-02-18 20:20:30,068 INFO L87 Difference]: Start difference. First operand 76993 states and 101970 transitions. Second operand has 18 states, 17 states have (on average 6.294117647058823) internal successors, (107), 18 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:20:35,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:20:35,087 INFO L93 Difference]: Finished difference Result 83623 states and 109430 transitions. [2023-02-18 20:20:35,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-02-18 20:20:35,089 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 6.294117647058823) internal successors, (107), 18 states have internal predecessors, (107), 0 states have call successors, (0), 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 81 [2023-02-18 20:20:35,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:20:35,224 INFO L225 Difference]: With dead ends: 83623 [2023-02-18 20:20:35,224 INFO L226 Difference]: Without dead ends: 83623 [2023-02-18 20:20:35,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1145 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=968, Invalid=2814, Unknown=0, NotChecked=0, Total=3782 [2023-02-18 20:20:35,225 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 1359 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1359 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-02-18 20:20:35,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1359 Valid, 655 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-02-18 20:20:35,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83623 states. [2023-02-18 20:20:36,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83623 to 78219. [2023-02-18 20:20:36,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78219 states, 78213 states have (on average 1.3224655747765717) internal successors, (103434), 78218 states have internal predecessors, (103434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:20:36,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78219 states to 78219 states and 103434 transitions. [2023-02-18 20:20:36,293 INFO L78 Accepts]: Start accepts. Automaton has 78219 states and 103434 transitions. Word has length 81 [2023-02-18 20:20:36,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:20:36,293 INFO L495 AbstractCegarLoop]: Abstraction has 78219 states and 103434 transitions. [2023-02-18 20:20:36,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.294117647058823) internal successors, (107), 18 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:20:36,294 INFO L276 IsEmpty]: Start isEmpty. Operand 78219 states and 103434 transitions. [2023-02-18 20:20:36,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-02-18 20:20:36,296 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:20:36,296 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:20:36,306 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 (46)] Ended with exit code 0 [2023-02-18 20:20:36,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:20:36,507 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:20:36,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:20:36,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1694561016, now seen corresponding path program 9 times [2023-02-18 20:20:36,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:20:36,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494682103] [2023-02-18 20:20:36,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 20:20:36,510 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:20:36,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:20:36,511 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:20:36,636 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 (47)] Waiting until timeout for monitored process [2023-02-18 20:20:37,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2023-02-18 20:20:37,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 20:20:37,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-18 20:20:37,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:20:37,710 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 [2023-02-18 20:20:37,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:20:37,865 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:20:37,865 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 32 treesize of output 66 [2023-02-18 20:20:37,872 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 [2023-02-18 20:20:38,349 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 46 proven. 362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:20:38,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:20:39,384 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 [2023-02-18 20:20:40,937 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 20:20:41,036 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 46 proven. 362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:20:41,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:20:41,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494682103] [2023-02-18 20:20:41,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494682103] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:20:41,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:20:41,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-02-18 20:20:41,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515246234] [2023-02-18 20:20:41,037 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:20:41,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-02-18 20:20:41,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:20:41,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-02-18 20:20:41,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=2118, Unknown=0, NotChecked=0, Total=2450 [2023-02-18 20:20:41,038 INFO L87 Difference]: Start difference. First operand 78219 states and 103434 transitions. Second operand has 50 states, 50 states have (on average 3.4) internal successors, (170), 50 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:20:44,598 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 [1] [2023-02-18 20:20:49,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 20:20:53,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 20:21:51,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:21:51,890 INFO L93 Difference]: Finished difference Result 138496 states and 182491 transitions. [2023-02-18 20:21:51,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-02-18 20:21:51,891 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.4) internal successors, (170), 50 states have internal predecessors, (170), 0 states have call successors, (0), 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 88 [2023-02-18 20:21:51,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:21:52,088 INFO L225 Difference]: With dead ends: 138496 [2023-02-18 20:21:52,088 INFO L226 Difference]: Without dead ends: 138349 [2023-02-18 20:21:52,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2269 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=2276, Invalid=10380, Unknown=0, NotChecked=0, Total=12656 [2023-02-18 20:21:52,089 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 4072 mSDsluCounter, 3699 mSDsCounter, 0 mSdLazyCounter, 8457 mSolverCounterSat, 267 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4072 SdHoareTripleChecker+Valid, 3880 SdHoareTripleChecker+Invalid, 8727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 8457 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.9s IncrementalHoareTripleChecker+Time [2023-02-18 20:21:52,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4072 Valid, 3880 Invalid, 8727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 8457 Invalid, 3 Unknown, 0 Unchecked, 62.9s Time] [2023-02-18 20:21:52,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138349 states. [2023-02-18 20:21:53,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138349 to 87990. [2023-02-18 20:21:53,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87990 states, 87984 states have (on average 1.3187397708674304) internal successors, (116028), 87989 states have internal predecessors, (116028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:21:53,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87990 states to 87990 states and 116028 transitions. [2023-02-18 20:21:53,581 INFO L78 Accepts]: Start accepts. Automaton has 87990 states and 116028 transitions. Word has length 88 [2023-02-18 20:21:53,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:21:53,581 INFO L495 AbstractCegarLoop]: Abstraction has 87990 states and 116028 transitions. [2023-02-18 20:21:53,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.4) internal successors, (170), 50 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:21:53,581 INFO L276 IsEmpty]: Start isEmpty. Operand 87990 states and 116028 transitions. [2023-02-18 20:21:53,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-02-18 20:21:53,584 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:21:53,584 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:21:53,596 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 (47)] Ended with exit code 0 [2023-02-18 20:21:53,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:21:53,789 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:21:53,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:21:53,790 INFO L85 PathProgramCache]: Analyzing trace with hash -2130212004, now seen corresponding path program 1 times [2023-02-18 20:21:53,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:21:53,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236779690] [2023-02-18 20:21:53,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:21:53,790 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:21:53,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:21:53,791 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:21:53,792 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 (48)] Waiting until timeout for monitored process [2023-02-18 20:21:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:21:54,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-18 20:21:54,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:21:54,139 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-02-18 20:21:54,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:21:54,728 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 93 treesize of output 87 [2023-02-18 20:21:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 6 proven. 92 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-02-18 20:21:55,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:21:55,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236779690] [2023-02-18 20:21:55,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236779690] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:21:55,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:21:55,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-02-18 20:21:55,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494601624] [2023-02-18 20:21:55,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:21:55,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-18 20:21:55,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:21:55,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-18 20:21:55,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2023-02-18 20:21:55,127 INFO L87 Difference]: Start difference. First operand 87990 states and 116028 transitions. Second operand has 28 states, 27 states have (on average 4.703703703703703) internal successors, (127), 28 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:22:06,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:22:34,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:22:34,276 INFO L93 Difference]: Finished difference Result 158042 states and 206938 transitions. [2023-02-18 20:22:34,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-02-18 20:22:34,280 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.703703703703703) internal successors, (127), 28 states have internal predecessors, (127), 0 states have call successors, (0), 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 88 [2023-02-18 20:22:34,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:22:34,487 INFO L225 Difference]: With dead ends: 158042 [2023-02-18 20:22:34,487 INFO L226 Difference]: Without dead ends: 158042 [2023-02-18 20:22:34,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2675 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1499, Invalid=6873, Unknown=0, NotChecked=0, Total=8372 [2023-02-18 20:22:34,488 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 1999 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 3794 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1999 SdHoareTripleChecker+Valid, 2104 SdHoareTripleChecker+Invalid, 4031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 3794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2023-02-18 20:22:34,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1999 Valid, 2104 Invalid, 4031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 3794 Invalid, 0 Unknown, 0 Unchecked, 31.6s Time] [2023-02-18 20:22:34,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158042 states. [2023-02-18 20:22:36,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158042 to 138772. [2023-02-18 20:22:36,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138772 states, 138766 states have (on average 1.3186947811423548) internal successors, (182990), 138771 states have internal predecessors, (182990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:22:36,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138772 states to 138772 states and 182990 transitions. [2023-02-18 20:22:36,938 INFO L78 Accepts]: Start accepts. Automaton has 138772 states and 182990 transitions. Word has length 88 [2023-02-18 20:22:36,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:22:36,939 INFO L495 AbstractCegarLoop]: Abstraction has 138772 states and 182990 transitions. [2023-02-18 20:22:36,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.703703703703703) internal successors, (127), 28 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:22:36,939 INFO L276 IsEmpty]: Start isEmpty. Operand 138772 states and 182990 transitions. [2023-02-18 20:22:36,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-02-18 20:22:36,943 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:22:36,943 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:22:36,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2023-02-18 20:22:37,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:22:37,153 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:22:37,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:22:37,153 INFO L85 PathProgramCache]: Analyzing trace with hash -2084407593, now seen corresponding path program 2 times [2023-02-18 20:22:37,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:22:37,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075239490] [2023-02-18 20:22:37,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 20:22:37,154 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:22:37,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:22:37,155 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:22:37,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2023-02-18 20:22:37,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 20:22:37,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 20:22:37,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-18 20:22:37,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:22:37,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:22:37,400 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 [2023-02-18 20:22:37,403 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 [2023-02-18 20:22:37,619 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 30 proven. 99 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-02-18 20:22:37,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:22:39,153 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 20:22:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-02-18 20:22:39,254 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:22:39,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075239490] [2023-02-18 20:22:39,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075239490] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:22:39,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:22:39,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 30 [2023-02-18 20:22:39,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629673414] [2023-02-18 20:22:39,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:22:39,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-02-18 20:22:39,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:22:39,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-02-18 20:22:39,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=693, Unknown=0, NotChecked=0, Total=870 [2023-02-18 20:22:39,256 INFO L87 Difference]: Start difference. First operand 138772 states and 182990 transitions. Second operand has 30 states, 30 states have (on average 4.2) internal successors, (126), 30 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) [2023-02-18 20:22:44,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:22:44,235 INFO L93 Difference]: Finished difference Result 152018 states and 199450 transitions. [2023-02-18 20:22:44,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-02-18 20:22:44,237 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.2) internal successors, (126), 30 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) Word has length 92 [2023-02-18 20:22:44,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:22:44,654 INFO L225 Difference]: With dead ends: 152018 [2023-02-18 20:22:44,654 INFO L226 Difference]: Without dead ends: 151891 [2023-02-18 20:22:44,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=733, Invalid=3049, Unknown=0, NotChecked=0, Total=3782 [2023-02-18 20:22:44,656 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 611 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-02-18 20:22:44,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 580 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-02-18 20:22:44,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151891 states. [2023-02-18 20:22:46,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151891 to 138826. [2023-02-18 20:22:46,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138826 states, 138820 states have (on average 1.318325889641262) internal successors, (183010), 138825 states have internal predecessors, (183010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:22:46,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138826 states to 138826 states and 183010 transitions. [2023-02-18 20:22:46,724 INFO L78 Accepts]: Start accepts. Automaton has 138826 states and 183010 transitions. Word has length 92 [2023-02-18 20:22:46,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:22:46,724 INFO L495 AbstractCegarLoop]: Abstraction has 138826 states and 183010 transitions. [2023-02-18 20:22:46,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.2) internal successors, (126), 30 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) [2023-02-18 20:22:46,724 INFO L276 IsEmpty]: Start isEmpty. Operand 138826 states and 183010 transitions. [2023-02-18 20:22:46,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-02-18 20:22:46,728 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:22:46,728 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 1, 1, 1, 1, 1] [2023-02-18 20:22:46,737 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 (49)] Forceful destruction successful, exit code 0 [2023-02-18 20:22:46,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:22:46,932 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 20:22:46,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:22:46,933 INFO L85 PathProgramCache]: Analyzing trace with hash 2084926986, now seen corresponding path program 4 times [2023-02-18 20:22:46,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:22:46,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692670781] [2023-02-18 20:22:46,933 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 20:22:46,933 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 20:22:46,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:22:46,935 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 20:22:46,935 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 (50)] Waiting until timeout for monitored process [2023-02-18 20:22:47,124 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 20:22:47,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 20:22:47,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-18 20:22:47,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:22:47,140 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 [2023-02-18 20:22:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:22:47,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:22:54,817 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:22:54,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:22:54,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692670781] [2023-02-18 20:22:54,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692670781] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 20:22:54,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:22:54,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2023-02-18 20:22:54,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186102759] [2023-02-18 20:22:54,818 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:22:54,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-02-18 20:22:54,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:22:54,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-02-18 20:22:54,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=855, Invalid=2451, Unknown=0, NotChecked=0, Total=3306 [2023-02-18 20:22:54,819 INFO L87 Difference]: Start difference. First operand 138826 states and 183010 transitions. Second operand has 58 states, 57 states have (on average 3.263157894736842) internal successors, (186), 58 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:22:57,986 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 [] [2023-02-18 20:23:03,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:23:11,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 20:23:17,869 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 []