./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/busybox-1.22.0/basename-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/busybox-1.22.0/basename-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 64bit --witnessprinter.graph.data.programhash 65aca230ed2b7a8b5f7f2ccd484c93b0425fe4f5fb1895001f199a0c2754f5f4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 07:11:56,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 07:11:56,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 07:11:56,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 07:11:56,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 07:11:56,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 07:11:56,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 07:11:56,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 07:11:56,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 07:11:56,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 07:11:56,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 07:11:56,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 07:11:56,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 07:11:56,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 07:11:56,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 07:11:56,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 07:11:56,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 07:11:56,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 07:11:56,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 07:11:56,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 07:11:56,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 07:11:56,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 07:11:56,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 07:11:56,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 07:11:56,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 07:11:56,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 07:11:56,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 07:11:56,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 07:11:56,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 07:11:56,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 07:11:56,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 07:11:56,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 07:11:56,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 07:11:56,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 07:11:56,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 07:11:56,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 07:11:56,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 07:11:56,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 07:11:56,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 07:11:56,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 07:11:56,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 07:11:56,407 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2023-02-18 07:11:56,425 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 07:11:56,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 07:11:56,426 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 07:11:56,426 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 07:11:56,427 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 07:11:56,427 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 07:11:56,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 07:11:56,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 07:11:56,428 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 07:11:56,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 07:11:56,429 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 07:11:56,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 07:11:56,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 07:11:56,429 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 07:11:56,429 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 07:11:56,430 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 07:11:56,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 07:11:56,430 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 07:11:56,430 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 07:11:56,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 07:11:56,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 07:11:56,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 07:11:56,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 07:11:56,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 07:11:56,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 07:11:56,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 07:11:56,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 07:11:56,432 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 07:11:56,432 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 07:11:56,432 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 07:11:56,433 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 07:11:56,433 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65aca230ed2b7a8b5f7f2ccd484c93b0425fe4f5fb1895001f199a0c2754f5f4 [2023-02-18 07:11:56,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 07:11:56,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 07:11:56,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 07:11:56,684 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 07:11:56,685 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 07:11:56,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/busybox-1.22.0/basename-1.i [2023-02-18 07:11:57,790 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 07:11:58,070 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 07:11:58,072 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/basename-1.i [2023-02-18 07:11:58,092 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7ef000b8/38525ca045364397807581df1d532fd9/FLAG792224849 [2023-02-18 07:11:58,106 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7ef000b8/38525ca045364397807581df1d532fd9 [2023-02-18 07:11:58,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 07:11:58,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 07:11:58,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 07:11:58,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 07:11:58,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 07:11:58,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:11:58" (1/1) ... [2023-02-18 07:11:58,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5124dd15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:58, skipping insertion in model container [2023-02-18 07:11:58,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:11:58" (1/1) ... [2023-02-18 07:11:58,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 07:11:58,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 07:11:58,647 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2023-02-18 07:11:58,656 WARN L623 FunctionHandler]: Unknown extern function strrchr [2023-02-18 07:11:58,668 WARN L623 FunctionHandler]: Unknown extern function write [2023-02-18 07:11:58,680 WARN L623 FunctionHandler]: Unknown extern function getopt [2023-02-18 07:11:58,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:11:58,704 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 07:11:58,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@35b9eb0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:58, skipping insertion in model container [2023-02-18 07:11:58,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 07:11:58,706 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-18 07:11:58,707 INFO L158 Benchmark]: Toolchain (without parser) took 597.45ms. Allocated memory is still 157.3MB. Free memory was 107.9MB in the beginning and 87.7MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-02-18 07:11:58,708 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 157.3MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 07:11:58,708 INFO L158 Benchmark]: CACSL2BoogieTranslator took 594.06ms. Allocated memory is still 157.3MB. Free memory was 107.5MB in the beginning and 87.7MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-02-18 07:11:58,709 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 157.3MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 594.06ms. Allocated memory is still 157.3MB. Free memory was 107.5MB in the beginning and 87.7MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1515]: 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/busybox-1.22.0/basename-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 64bit --witnessprinter.graph.data.programhash 65aca230ed2b7a8b5f7f2ccd484c93b0425fe4f5fb1895001f199a0c2754f5f4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 07:12:00,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 07:12:00,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 07:12:00,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 07:12:00,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 07:12:00,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 07:12:00,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 07:12:00,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 07:12:00,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 07:12:00,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 07:12:00,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 07:12:00,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 07:12:00,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 07:12:00,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 07:12:00,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 07:12:00,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 07:12:00,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 07:12:00,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 07:12:00,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 07:12:00,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 07:12:00,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 07:12:00,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 07:12:00,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 07:12:00,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 07:12:00,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 07:12:00,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 07:12:00,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 07:12:00,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 07:12:00,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 07:12:00,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 07:12:00,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 07:12:00,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 07:12:00,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 07:12:00,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 07:12:00,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 07:12:00,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 07:12:00,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 07:12:00,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 07:12:00,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 07:12:00,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 07:12:00,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 07:12:00,721 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2023-02-18 07:12:00,753 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 07:12:00,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 07:12:00,754 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 07:12:00,754 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 07:12:00,755 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 07:12:00,755 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 07:12:00,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 07:12:00,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 07:12:00,756 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 07:12:00,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 07:12:00,757 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 07:12:00,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 07:12:00,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 07:12:00,757 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 07:12:00,758 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 07:12:00,758 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 07:12:00,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 07:12:00,758 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 07:12:00,758 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-18 07:12:00,758 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-18 07:12:00,759 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 07:12:00,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 07:12:00,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 07:12:00,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 07:12:00,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 07:12:00,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 07:12:00,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 07:12:00,760 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-18 07:12:00,760 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-18 07:12:00,760 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 07:12:00,760 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 07:12:00,761 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 07:12:00,761 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-18 07:12:00,761 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 07:12:00,761 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65aca230ed2b7a8b5f7f2ccd484c93b0425fe4f5fb1895001f199a0c2754f5f4 [2023-02-18 07:12:01,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 07:12:01,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 07:12:01,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 07:12:01,101 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 07:12:01,101 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 07:12:01,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/busybox-1.22.0/basename-1.i [2023-02-18 07:12:02,213 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 07:12:02,544 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 07:12:02,544 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/basename-1.i [2023-02-18 07:12:02,565 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4780ed1f7/40c48d0cc3b64feb8566f81c14a95abc/FLAG2e83ed360 [2023-02-18 07:12:02,578 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4780ed1f7/40c48d0cc3b64feb8566f81c14a95abc [2023-02-18 07:12:02,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 07:12:02,581 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 07:12:02,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 07:12:02,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 07:12:02,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 07:12:02,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:12:02" (1/1) ... [2023-02-18 07:12:02,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a71713f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:12:02, skipping insertion in model container [2023-02-18 07:12:02,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:12:02" (1/1) ... [2023-02-18 07:12:02,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 07:12:02,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 07:12:03,275 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2023-02-18 07:12:03,292 WARN L623 FunctionHandler]: Unknown extern function strrchr [2023-02-18 07:12:03,305 WARN L623 FunctionHandler]: Unknown extern function write [2023-02-18 07:12:03,321 WARN L623 FunctionHandler]: Unknown extern function getopt [2023-02-18 07:12:03,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:12:03,361 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-18 07:12:03,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 07:12:03,422 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2023-02-18 07:12:03,431 WARN L623 FunctionHandler]: Unknown extern function strrchr [2023-02-18 07:12:03,443 WARN L623 FunctionHandler]: Unknown extern function write [2023-02-18 07:12:03,450 WARN L623 FunctionHandler]: Unknown extern function getopt [2023-02-18 07:12:03,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:12:03,461 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 07:12:03,519 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2023-02-18 07:12:03,527 WARN L623 FunctionHandler]: Unknown extern function strrchr [2023-02-18 07:12:03,536 WARN L623 FunctionHandler]: Unknown extern function write [2023-02-18 07:12:03,545 WARN L623 FunctionHandler]: Unknown extern function getopt [2023-02-18 07:12:03,552 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:12:03,639 INFO L208 MainTranslator]: Completed translation [2023-02-18 07:12:03,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:12:03 WrapperNode [2023-02-18 07:12:03,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 07:12:03,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 07:12:03,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 07:12:03,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 07:12:03,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:12:03" (1/1) ... [2023-02-18 07:12:03,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:12:03" (1/1) ... [2023-02-18 07:12:03,708 INFO L138 Inliner]: procedures = 352, calls = 112, calls flagged for inlining = 11, calls inlined = 10, statements flattened = 367 [2023-02-18 07:12:03,708 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 07:12:03,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 07:12:03,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 07:12:03,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 07:12:03,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:12:03" (1/1) ... [2023-02-18 07:12:03,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:12:03" (1/1) ... [2023-02-18 07:12:03,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:12:03" (1/1) ... [2023-02-18 07:12:03,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:12:03" (1/1) ... [2023-02-18 07:12:03,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:12:03" (1/1) ... [2023-02-18 07:12:03,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:12:03" (1/1) ... [2023-02-18 07:12:03,756 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:12:03" (1/1) ... [2023-02-18 07:12:03,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:12:03" (1/1) ... [2023-02-18 07:12:03,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 07:12:03,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 07:12:03,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 07:12:03,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 07:12:03,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:12:03" (1/1) ... [2023-02-18 07:12:03,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 07:12:03,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:12:03,817 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 07:12:03,845 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 07:12:03,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-02-18 07:12:03,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-18 07:12:03,863 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-18 07:12:03,863 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-18 07:12:03,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-18 07:12:03,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-02-18 07:12:03,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 07:12:03,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-18 07:12:03,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 07:12:03,865 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-02-18 07:12:03,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 07:12:03,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-18 07:12:03,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 07:12:03,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 07:12:04,217 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 07:12:04,220 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 07:12:05,315 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 07:12:05,321 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 07:12:05,321 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2023-02-18 07:12:05,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:12:05 BoogieIcfgContainer [2023-02-18 07:12:05,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 07:12:05,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 07:12:05,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 07:12:05,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 07:12:05,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 07:12:02" (1/3) ... [2023-02-18 07:12:05,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af5b04f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:12:05, skipping insertion in model container [2023-02-18 07:12:05,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:12:03" (2/3) ... [2023-02-18 07:12:05,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af5b04f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:12:05, skipping insertion in model container [2023-02-18 07:12:05,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:12:05" (3/3) ... [2023-02-18 07:12:05,330 INFO L112 eAbstractionObserver]: Analyzing ICFG basename-1.i [2023-02-18 07:12:05,344 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 07:12:05,344 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 92 error locations. [2023-02-18 07:12:05,379 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 07:12:05,384 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;@35248a14, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 07:12:05,384 INFO L358 AbstractCegarLoop]: Starting to check reachability of 92 error locations. [2023-02-18 07:12:05,387 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 142 states have (on average 1.9366197183098592) internal successors, (275), 234 states have internal predecessors, (275), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 07:12:05,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-18 07:12:05,392 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:12:05,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-18 07:12:05,393 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2023-02-18 07:12:05,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:12:05,397 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2023-02-18 07:12:05,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:12:05,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116828759] [2023-02-18 07:12:05,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:12:05,409 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 07:12:05,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:12:05,411 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 07:12:05,465 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 07:12:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:12:05,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 07:12:05,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:12:05,679 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 07:12:05,684 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 07:12:05,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:12:05,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:12:05,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116828759] [2023-02-18 07:12:05,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116828759] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:12:05,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:12:05,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 07:12:05,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635950204] [2023-02-18 07:12:05,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:12:05,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:12:05,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:12:05,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:12:05,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:12:05,734 INFO L87 Difference]: Start difference. First operand has 238 states, 142 states have (on average 1.9366197183098592) internal successors, (275), 234 states have internal predecessors, (275), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states 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 07:12:06,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:12:06,163 INFO L93 Difference]: Finished difference Result 248 states and 279 transitions. [2023-02-18 07:12:06,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:12:06,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2023-02-18 07:12:06,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:12:06,173 INFO L225 Difference]: With dead ends: 248 [2023-02-18 07:12:06,173 INFO L226 Difference]: Without dead ends: 246 [2023-02-18 07:12:06,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:12:06,177 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 233 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 07:12:06,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 201 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 07:12:06,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-02-18 07:12:06,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 230. [2023-02-18 07:12:06,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 139 states have (on average 1.841726618705036) internal successors, (256), 226 states have internal predecessors, (256), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 07:12:06,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 260 transitions. [2023-02-18 07:12:06,217 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 260 transitions. Word has length 3 [2023-02-18 07:12:06,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:12:06,218 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 260 transitions. [2023-02-18 07:12:06,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states 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 07:12:06,218 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 260 transitions. [2023-02-18 07:12:06,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-18 07:12:06,218 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:12:06,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-18 07:12:06,230 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 07:12:06,427 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 07:12:06,428 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2023-02-18 07:12:06,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:12:06,428 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-02-18 07:12:06,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:12:06,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429577731] [2023-02-18 07:12:06,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:12:06,430 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 07:12:06,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:12:06,433 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 07:12:06,440 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 07:12:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:12:06,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 07:12:06,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:12:06,570 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 07:12:06,575 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 07:12:06,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:12:06,575 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:12:06,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429577731] [2023-02-18 07:12:06,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429577731] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:12:06,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:12:06,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 07:12:06,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408414246] [2023-02-18 07:12:06,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:12:06,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:12:06,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:12:06,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:12:06,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:12:06,583 INFO L87 Difference]: Start difference. First operand 230 states and 260 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states 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 07:12:07,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:12:07,220 INFO L93 Difference]: Finished difference Result 229 states and 259 transitions. [2023-02-18 07:12:07,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:12:07,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2023-02-18 07:12:07,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:12:07,223 INFO L225 Difference]: With dead ends: 229 [2023-02-18 07:12:07,223 INFO L226 Difference]: Without dead ends: 229 [2023-02-18 07:12:07,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:12:07,224 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 9 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-18 07:12:07,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 420 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-18 07:12:07,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-02-18 07:12:07,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2023-02-18 07:12:07,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 139 states have (on average 1.8345323741007193) internal successors, (255), 225 states have internal predecessors, (255), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 07:12:07,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 259 transitions. [2023-02-18 07:12:07,247 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 259 transitions. Word has length 3 [2023-02-18 07:12:07,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:12:07,247 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 259 transitions. [2023-02-18 07:12:07,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states 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 07:12:07,248 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 259 transitions. [2023-02-18 07:12:07,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 07:12:07,248 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:12:07,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 07:12:07,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-18 07:12:07,448 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 07:12:07,449 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2023-02-18 07:12:07,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:12:07,449 INFO L85 PathProgramCache]: Analyzing trace with hash 889446313, now seen corresponding path program 1 times [2023-02-18 07:12:07,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:12:07,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288658486] [2023-02-18 07:12:07,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:12:07,451 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 07:12:07,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:12:07,452 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 07:12:07,454 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 07:12:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:12:07,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 07:12:07,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:12:07,576 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 07:12:07,585 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 07:12:07,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:12:07,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:12:07,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288658486] [2023-02-18 07:12:07,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288658486] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:12:07,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:12:07,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 07:12:07,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824777501] [2023-02-18 07:12:07,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:12:07,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 07:12:07,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:12:07,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 07:12:07,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-18 07:12:07,588 INFO L87 Difference]: Start difference. First operand 229 states and 259 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 07:12:08,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:12:08,360 INFO L93 Difference]: Finished difference Result 233 states and 263 transitions. [2023-02-18 07:12:08,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 07:12:08,361 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 07:12:08,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:12:08,363 INFO L225 Difference]: With dead ends: 233 [2023-02-18 07:12:08,363 INFO L226 Difference]: Without dead ends: 233 [2023-02-18 07:12:08,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-18 07:12:08,364 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 10 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-18 07:12:08,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 585 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-18 07:12:08,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-02-18 07:12:08,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 231. [2023-02-18 07:12:08,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 141 states have (on average 1.822695035460993) internal successors, (257), 227 states have internal predecessors, (257), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 07:12:08,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 261 transitions. [2023-02-18 07:12:08,376 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 261 transitions. Word has length 6 [2023-02-18 07:12:08,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:12:08,376 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 261 transitions. [2023-02-18 07:12:08,376 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 07:12:08,377 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 261 transitions. [2023-02-18 07:12:08,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 07:12:08,377 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:12:08,377 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:12:08,392 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 07:12:08,589 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 07:12:08,590 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2023-02-18 07:12:08,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:12:08,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1261842348, now seen corresponding path program 1 times [2023-02-18 07:12:08,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:12:08,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504129181] [2023-02-18 07:12:08,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:12:08,593 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 07:12:08,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:12:08,594 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 07:12:08,596 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 07:12:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:12:08,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 07:12:08,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:12:08,734 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 07:12:08,754 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 07:12:08,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:12:09,014 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 07:12:09,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:12:09,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504129181] [2023-02-18 07:12:09,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504129181] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:12:09,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 07:12:09,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-02-18 07:12:09,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092447959] [2023-02-18 07:12:09,015 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 07:12:09,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 07:12:09,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:12:09,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 07:12:09,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-18 07:12:09,016 INFO L87 Difference]: Start difference. First operand 231 states and 261 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 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 07:12:12,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:12:12,315 INFO L93 Difference]: Finished difference Result 237 states and 267 transitions. [2023-02-18 07:12:12,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 07:12:12,316 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 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 10 [2023-02-18 07:12:12,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:12:12,317 INFO L225 Difference]: With dead ends: 237 [2023-02-18 07:12:12,317 INFO L226 Difference]: Without dead ends: 237 [2023-02-18 07:12:12,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-02-18 07:12:12,319 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 24 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-02-18 07:12:12,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 752 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-02-18 07:12:12,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-02-18 07:12:12,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2023-02-18 07:12:12,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 148 states have (on average 1.777027027027027) internal successors, (263), 233 states have internal predecessors, (263), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 07:12:12,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 267 transitions. [2023-02-18 07:12:12,332 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 267 transitions. Word has length 10 [2023-02-18 07:12:12,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:12:12,332 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 267 transitions. [2023-02-18 07:12:12,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 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 07:12:12,333 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 267 transitions. [2023-02-18 07:12:12,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-18 07:12:12,333 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:12:12,333 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:12:12,345 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 07:12:12,545 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 07:12:12,545 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2023-02-18 07:12:12,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:12:12,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1887063184, now seen corresponding path program 1 times [2023-02-18 07:12:12,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:12:12,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439580877] [2023-02-18 07:12:12,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:12:12,547 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 07:12:12,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:12:12,549 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 07:12:12,551 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 07:12:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:12:12,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 07:12:12,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:12:12,740 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:12:12,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:12:12,790 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:12:12,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:12:12,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439580877] [2023-02-18 07:12:12,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439580877] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:12:12,791 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 07:12:12,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-02-18 07:12:12,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637401764] [2023-02-18 07:12:12,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 07:12:12,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 07:12:12,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:12:12,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 07:12:12,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-02-18 07:12:12,795 INFO L87 Difference]: Start difference. First operand 237 states and 267 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 07:12:12,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:12:12,958 INFO L93 Difference]: Finished difference Result 257 states and 287 transitions. [2023-02-18 07:12:12,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 07:12:12,959 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2023-02-18 07:12:12,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:12:12,960 INFO L225 Difference]: With dead ends: 257 [2023-02-18 07:12:12,960 INFO L226 Difference]: Without dead ends: 257 [2023-02-18 07:12:12,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2023-02-18 07:12:12,961 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 18 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 07:12:12,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1277 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 07:12:12,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-02-18 07:12:12,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2023-02-18 07:12:12,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 168 states have (on average 1.6845238095238095) internal successors, (283), 253 states have internal predecessors, (283), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 07:12:12,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 287 transitions. [2023-02-18 07:12:12,970 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 287 transitions. Word has length 25 [2023-02-18 07:12:12,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:12:12,971 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 287 transitions. [2023-02-18 07:12:12,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 07:12:12,971 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 287 transitions. [2023-02-18 07:12:12,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-18 07:12:12,972 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:12:12,972 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:12:12,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-18 07:12:13,184 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 07:12:13,185 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2023-02-18 07:12:13,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:12:13,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1620022495, now seen corresponding path program 2 times [2023-02-18 07:12:13,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:12:13,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400588360] [2023-02-18 07:12:13,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 07:12:13,186 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 07:12:13,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:12:13,187 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 07:12:13,188 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 07:12:13,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-18 07:12:13,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:12:13,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 07:12:13,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:12:13,356 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:12:13,356 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 07:12:13,378 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-02-18 07:12:13,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:12:13,378 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:12:13,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400588360] [2023-02-18 07:12:13,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400588360] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:12:13,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:12:13,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 07:12:13,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106829205] [2023-02-18 07:12:13,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:12:13,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:12:13,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:12:13,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:12:13,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:12:13,383 INFO L87 Difference]: Start difference. First operand 257 states and 287 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:12:13,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:12:13,825 INFO L93 Difference]: Finished difference Result 268 states and 299 transitions. [2023-02-18 07:12:13,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:12:13,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2023-02-18 07:12:13,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:12:13,827 INFO L225 Difference]: With dead ends: 268 [2023-02-18 07:12:13,827 INFO L226 Difference]: Without dead ends: 268 [2023-02-18 07:12:13,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 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 07:12:13,828 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 218 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 07:12:13,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 204 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 07:12:13,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-02-18 07:12:13,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 252. [2023-02-18 07:12:13,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 168 states have (on average 1.6547619047619047) internal successors, (278), 248 states have internal predecessors, (278), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 07:12:13,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 282 transitions. [2023-02-18 07:12:13,834 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 282 transitions. Word has length 45 [2023-02-18 07:12:13,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:12:13,836 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 282 transitions. [2023-02-18 07:12:13,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:12:13,836 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 282 transitions. [2023-02-18 07:12:13,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-18 07:12:13,837 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:12:13,837 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:12:13,851 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 07:12:14,037 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 07:12:14,038 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2023-02-18 07:12:14,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:12:14,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1620022494, now seen corresponding path program 1 times [2023-02-18 07:12:14,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:12:14,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856179201] [2023-02-18 07:12:14,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:12:14,039 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 07:12:14,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:12:14,040 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 07:12:14,042 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 07:12:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:12:14,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 07:12:14,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:12:14,302 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:12:14,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:12:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:12:14,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:12:14,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856179201] [2023-02-18 07:12:14,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856179201] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:12:14,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 07:12:14,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-02-18 07:12:14,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274604744] [2023-02-18 07:12:14,479 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 07:12:14,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-18 07:12:14,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:12:14,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-18 07:12:14,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2023-02-18 07:12:14,481 INFO L87 Difference]: Start difference. First operand 252 states and 282 transitions. Second operand has 20 states, 20 states have (on average 4.0) internal successors, (80), 20 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 07:12:14,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:12:14,889 INFO L93 Difference]: Finished difference Result 260 states and 290 transitions. [2023-02-18 07:12:14,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 07:12:14,889 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.0) internal successors, (80), 20 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2023-02-18 07:12:14,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:12:14,891 INFO L225 Difference]: With dead ends: 260 [2023-02-18 07:12:14,891 INFO L226 Difference]: Without dead ends: 260 [2023-02-18 07:12:14,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2023-02-18 07:12:14,892 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 9 mSDsluCounter, 3033 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 3291 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 07:12:14,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 3291 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 07:12:14,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-02-18 07:12:14,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2023-02-18 07:12:14,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 176 states have (on average 1.625) internal successors, (286), 256 states have internal predecessors, (286), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 07:12:14,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 290 transitions. [2023-02-18 07:12:14,898 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 290 transitions. Word has length 45 [2023-02-18 07:12:14,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:12:14,898 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 290 transitions. [2023-02-18 07:12:14,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.0) internal successors, (80), 20 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 07:12:14,898 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 290 transitions. [2023-02-18 07:12:14,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-02-18 07:12:14,899 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:12:14,899 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:12:14,916 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 (8)] Ended with exit code 0 [2023-02-18 07:12:15,114 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 07:12:15,114 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2023-02-18 07:12:15,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:12:15,114 INFO L85 PathProgramCache]: Analyzing trace with hash 501144028, now seen corresponding path program 2 times [2023-02-18 07:12:15,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:12:15,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21342454] [2023-02-18 07:12:15,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 07:12:15,115 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 07:12:15,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:12:15,116 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 07:12:15,117 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 07:12:15,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-18 07:12:15,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:12:15,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-18 07:12:15,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:12:15,299 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:12:15,300 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 19 treesize of output 40 [2023-02-18 07:12:15,358 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-02-18 07:12:15,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:12:15,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:12:15,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21342454] [2023-02-18 07:12:15,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21342454] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:12:15,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:12:15,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 07:12:15,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071193162] [2023-02-18 07:12:15,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:12:15,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 07:12:15,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:12:15,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 07:12:15,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-18 07:12:15,360 INFO L87 Difference]: Start difference. First operand 260 states and 290 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:12:17,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:12:17,156 INFO L93 Difference]: Finished difference Result 439 states and 497 transitions. [2023-02-18 07:12:17,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 07:12:17,157 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2023-02-18 07:12:17,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:12:17,159 INFO L225 Difference]: With dead ends: 439 [2023-02-18 07:12:17,159 INFO L226 Difference]: Without dead ends: 439 [2023-02-18 07:12:17,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-02-18 07:12:17,160 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 632 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-02-18 07:12:17,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 748 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-02-18 07:12:17,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2023-02-18 07:12:17,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 363. [2023-02-18 07:12:17,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 279 states have (on average 1.7168458781362008) internal successors, (479), 358 states have internal predecessors, (479), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 07:12:17,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 485 transitions. [2023-02-18 07:12:17,169 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 485 transitions. Word has length 53 [2023-02-18 07:12:17,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:12:17,170 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 485 transitions. [2023-02-18 07:12:17,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:12:17,170 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 485 transitions. [2023-02-18 07:12:17,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-18 07:12:17,170 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:12:17,171 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:12:17,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-02-18 07:12:17,371 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 07:12:17,371 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2023-02-18 07:12:17,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:12:17,372 INFO L85 PathProgramCache]: Analyzing trace with hash 275387719, now seen corresponding path program 1 times [2023-02-18 07:12:17,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:12:17,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778776722] [2023-02-18 07:12:17,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:12:17,373 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 07:12:17,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:12:17,375 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 07:12:17,378 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 07:12:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:12:17,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 07:12:17,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:12:17,782 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:12:17,782 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 19 treesize of output 40 [2023-02-18 07:12:18,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 07:12:18,062 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:12:18,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 83 treesize of output 139 [2023-02-18 07:12:18,084 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:12:18,084 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 07:12:20,492 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-02-18 07:12:20,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:12:20,492 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:12:20,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778776722] [2023-02-18 07:12:20,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778776722] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:12:20,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:12:20,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-18 07:12:20,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650190718] [2023-02-18 07:12:20,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:12:20,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 07:12:20,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:12:20,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 07:12:20,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-02-18 07:12:20,496 INFO L87 Difference]: Start difference. First operand 363 states and 485 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:12:27,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:12:27,930 INFO L93 Difference]: Finished difference Result 295 states and 327 transitions. [2023-02-18 07:12:27,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 07:12:27,932 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2023-02-18 07:12:27,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:12:27,933 INFO L225 Difference]: With dead ends: 295 [2023-02-18 07:12:27,936 INFO L226 Difference]: Without dead ends: 295 [2023-02-18 07:12:27,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-02-18 07:12:27,937 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 779 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-02-18 07:12:27,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 607 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-02-18 07:12:27,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-02-18 07:12:27,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 272. [2023-02-18 07:12:27,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 190 states have (on average 1.605263157894737) internal successors, (305), 268 states have internal predecessors, (305), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 07:12:27,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 309 transitions. [2023-02-18 07:12:27,948 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 309 transitions. Word has length 56 [2023-02-18 07:12:27,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:12:27,949 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 309 transitions. [2023-02-18 07:12:27,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:12:27,949 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 309 transitions. [2023-02-18 07:12:27,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-02-18 07:12:27,950 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:12:27,951 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:12:27,965 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 07:12:28,160 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 07:12:28,160 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2023-02-18 07:12:28,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:12:28,161 INFO L85 PathProgramCache]: Analyzing trace with hash 687983530, now seen corresponding path program 1 times [2023-02-18 07:12:28,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:12:28,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947818449] [2023-02-18 07:12:28,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:12:28,162 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 07:12:28,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:12:28,163 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 07:12:28,167 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 07:12:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:12:28,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 07:12:28,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:12:28,623 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:12:28,624 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 14 treesize of output 35 [2023-02-18 07:12:28,639 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:12:28,639 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 07:12:28,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 07:12:28,843 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:12:28,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 88 treesize of output 144 [2023-02-18 07:12:28,875 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:12:28,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 106 [2023-02-18 07:12:41,575 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-02-18 07:12:41,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:12:41,575 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:12:41,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947818449] [2023-02-18 07:12:41,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947818449] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:12:41,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:12:41,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 07:12:41,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357515452] [2023-02-18 07:12:41,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:12:41,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 07:12:41,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:12:41,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 07:12:41,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-18 07:12:41,578 INFO L87 Difference]: Start difference. First operand 272 states and 309 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:12:52,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:12:52,593 INFO L93 Difference]: Finished difference Result 289 states and 321 transitions. [2023-02-18 07:12:52,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 07:12:52,596 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-02-18 07:12:52,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:12:52,598 INFO L225 Difference]: With dead ends: 289 [2023-02-18 07:12:52,598 INFO L226 Difference]: Without dead ends: 289 [2023-02-18 07:12:52,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-02-18 07:12:52,599 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 517 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-02-18 07:12:52,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 619 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2023-02-18 07:12:52,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-02-18 07:12:52,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 276. [2023-02-18 07:12:52,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 195 states have (on average 1.5897435897435896) internal successors, (310), 272 states have internal predecessors, (310), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 07:12:52,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 314 transitions. [2023-02-18 07:12:52,604 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 314 transitions. Word has length 59 [2023-02-18 07:12:52,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:12:52,605 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 314 transitions. [2023-02-18 07:12:52,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:12:52,606 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 314 transitions. [2023-02-18 07:12:52,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-02-18 07:12:52,610 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:12:52,610 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 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 07:12:52,628 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 07:12:52,821 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 07:12:52,822 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2023-02-18 07:12:52,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:12:52,822 INFO L85 PathProgramCache]: Analyzing trace with hash 133394829, now seen corresponding path program 1 times [2023-02-18 07:12:52,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:12:52,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557056838] [2023-02-18 07:12:52,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:12:52,823 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 07:12:52,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:12:52,825 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 07:12:52,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-02-18 07:12:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:12:53,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-18 07:12:53,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:12:53,294 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 07:12:53,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-02-18 07:12:53,348 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:12:53,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 79 [2023-02-18 07:12:53,423 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:12:53,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 56 [2023-02-18 07:12:53,461 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-02-18 07:12:53,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:12:53,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:12:53,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557056838] [2023-02-18 07:12:53,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557056838] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:12:53,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:12:53,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 07:12:53,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38527136] [2023-02-18 07:12:53,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:12:53,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 07:12:53,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:12:53,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 07:12:53,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-02-18 07:12:53,463 INFO L87 Difference]: Start difference. First operand 276 states and 314 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:12:55,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:12:55,618 INFO L93 Difference]: Finished difference Result 274 states and 311 transitions. [2023-02-18 07:12:55,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 07:12:55,621 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2023-02-18 07:12:55,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:12:55,622 INFO L225 Difference]: With dead ends: 274 [2023-02-18 07:12:55,622 INFO L226 Difference]: Without dead ends: 274 [2023-02-18 07:12:55,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-02-18 07:12:55,623 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 227 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-02-18 07:12:55,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 859 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-02-18 07:12:55,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-02-18 07:12:55,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2023-02-18 07:12:55,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 195 states have (on average 1.5743589743589743) internal successors, (307), 270 states have internal predecessors, (307), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 07:12:55,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 311 transitions. [2023-02-18 07:12:55,629 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 311 transitions. Word has length 62 [2023-02-18 07:12:55,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:12:55,629 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 311 transitions. [2023-02-18 07:12:55,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:12:55,629 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 311 transitions. [2023-02-18 07:12:55,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-02-18 07:12:55,630 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:12:55,630 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 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 07:12:55,651 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 07:12:55,830 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 07:12:55,830 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2023-02-18 07:12:55,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:12:55,831 INFO L85 PathProgramCache]: Analyzing trace with hash 133394830, now seen corresponding path program 1 times [2023-02-18 07:12:55,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:12:55,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936540896] [2023-02-18 07:12:55,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:12:55,832 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 07:12:55,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:12:55,835 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 07:12:55,838 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 07:12:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:12:56,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-18 07:12:56,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:12:56,418 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 07:12:56,438 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 07:12:56,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-02-18 07:12:56,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-02-18 07:12:56,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2023-02-18 07:12:56,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-02-18 07:12:56,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2023-02-18 07:12:56,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 9 [2023-02-18 07:12:56,573 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-02-18 07:12:56,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:12:56,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:12:56,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936540896] [2023-02-18 07:12:56,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936540896] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:12:56,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:12:56,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 07:12:56,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342385102] [2023-02-18 07:12:56,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:12:56,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 07:12:56,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:12:56,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 07:12:56,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-02-18 07:12:56,575 INFO L87 Difference]: Start difference. First operand 274 states and 311 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:12:58,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:12:58,677 INFO L93 Difference]: Finished difference Result 273 states and 309 transitions. [2023-02-18 07:12:58,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 07:12:58,678 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2023-02-18 07:12:58,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:12:58,680 INFO L225 Difference]: With dead ends: 273 [2023-02-18 07:12:58,680 INFO L226 Difference]: Without dead ends: 273 [2023-02-18 07:12:58,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-02-18 07:12:58,680 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 231 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:12:58,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 841 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-02-18 07:12:58,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-02-18 07:12:58,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-02-18 07:12:58,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 195 states have (on average 1.564102564102564) internal successors, (305), 269 states have internal predecessors, (305), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 07:12:58,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 309 transitions. [2023-02-18 07:12:58,686 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 309 transitions. Word has length 62 [2023-02-18 07:12:58,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:12:58,686 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 309 transitions. [2023-02-18 07:12:58,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:12:58,686 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 309 transitions. [2023-02-18 07:12:58,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-02-18 07:12:58,687 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:12:58,687 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 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 07:12:58,711 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 07:12:58,905 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 07:12:58,905 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2023-02-18 07:12:58,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:12:58,905 INFO L85 PathProgramCache]: Analyzing trace with hash 379730104, now seen corresponding path program 1 times [2023-02-18 07:12:58,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:12:58,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178487129] [2023-02-18 07:12:58,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:12:58,906 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 07:12:58,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:12:58,908 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 07:12:58,913 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 07:12:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:12:59,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 07:12:59,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:12:59,461 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 07:12:59,478 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:12:59,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2023-02-18 07:12:59,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-02-18 07:12:59,526 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 71 treesize of output 67 [2023-02-18 07:12:59,581 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:12:59,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 91 [2023-02-18 07:12:59,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 32 [2023-02-18 07:12:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-02-18 07:12:59,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:12:59,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:12:59,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178487129] [2023-02-18 07:12:59,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178487129] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:12:59,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:12:59,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-18 07:12:59,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51608230] [2023-02-18 07:12:59,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:12:59,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 07:12:59,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:12:59,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 07:12:59,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-02-18 07:12:59,688 INFO L87 Difference]: Start difference. First operand 273 states and 309 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:13:02,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:13:02,539 INFO L93 Difference]: Finished difference Result 296 states and 333 transitions. [2023-02-18 07:13:02,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 07:13:02,539 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2023-02-18 07:13:02,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:13:02,540 INFO L225 Difference]: With dead ends: 296 [2023-02-18 07:13:02,540 INFO L226 Difference]: Without dead ends: 296 [2023-02-18 07:13:02,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-02-18 07:13:02,541 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 263 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-02-18 07:13:02,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 913 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-02-18 07:13:02,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-02-18 07:13:02,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 282. [2023-02-18 07:13:02,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 204 states have (on average 1.5686274509803921) internal successors, (320), 278 states have internal predecessors, (320), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 07:13:02,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 324 transitions. [2023-02-18 07:13:02,546 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 324 transitions. Word has length 66 [2023-02-18 07:13:02,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:13:02,547 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 324 transitions. [2023-02-18 07:13:02,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:13:02,547 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 324 transitions. [2023-02-18 07:13:02,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-02-18 07:13:02,548 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:13:02,548 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 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 07:13:02,570 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 07:13:02,767 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 07:13:02,767 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2023-02-18 07:13:02,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:13:02,768 INFO L85 PathProgramCache]: Analyzing trace with hash 379730105, now seen corresponding path program 1 times [2023-02-18 07:13:02,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:13:02,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131655377] [2023-02-18 07:13:02,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:13:02,769 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 07:13:02,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:13:02,770 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 07:13:02,774 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 07:13:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:13:03,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-18 07:13:03,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:13:03,306 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 07:13:03,320 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:13:03,320 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 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-18 07:13:03,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 07:13:03,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-02-18 07:13:03,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-02-18 07:13:03,395 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 34 treesize of output 34 [2023-02-18 07:13:03,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-02-18 07:13:03,467 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:13:03,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 71 [2023-02-18 07:13:03,484 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 26 treesize of output 28 [2023-02-18 07:13:03,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 13 [2023-02-18 07:13:03,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2023-02-18 07:13:03,612 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-02-18 07:13:03,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:13:03,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:13:03,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131655377] [2023-02-18 07:13:03,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131655377] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:13:03,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:13:03,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-18 07:13:03,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3692100] [2023-02-18 07:13:03,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:13:03,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 07:13:03,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:13:03,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 07:13:03,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-02-18 07:13:03,615 INFO L87 Difference]: Start difference. First operand 282 states and 324 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:13:06,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:13:06,314 INFO L93 Difference]: Finished difference Result 294 states and 328 transitions. [2023-02-18 07:13:06,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 07:13:06,315 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2023-02-18 07:13:06,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:13:06,316 INFO L225 Difference]: With dead ends: 294 [2023-02-18 07:13:06,316 INFO L226 Difference]: Without dead ends: 294 [2023-02-18 07:13:06,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-02-18 07:13:06,317 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 477 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-02-18 07:13:06,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 643 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-02-18 07:13:06,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-02-18 07:13:06,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 282. [2023-02-18 07:13:06,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 204 states have (on average 1.5490196078431373) internal successors, (316), 278 states have internal predecessors, (316), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 07:13:06,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 320 transitions. [2023-02-18 07:13:06,322 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 320 transitions. Word has length 66 [2023-02-18 07:13:06,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:13:06,323 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 320 transitions. [2023-02-18 07:13:06,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:13:06,323 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 320 transitions. [2023-02-18 07:13:06,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-02-18 07:13:06,323 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:13:06,324 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 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, 1, 1, 1] [2023-02-18 07:13:06,342 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 07:13:06,542 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 07:13:06,542 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2023-02-18 07:13:06,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:13:06,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1974317589, now seen corresponding path program 1 times [2023-02-18 07:13:06,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:13:06,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144332954] [2023-02-18 07:13:06,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:13:06,544 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 07:13:06,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:13:06,545 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 07:13:06,546 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 07:13:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:13:07,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-18 07:13:07,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:13:07,120 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 07:13:07,145 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:13:07,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2023-02-18 07:13:07,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-02-18 07:13:07,203 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 71 treesize of output 67 [2023-02-18 07:13:07,265 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:13:07,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 91 [2023-02-18 07:13:07,342 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:13:07,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 91 [2023-02-18 07:13:07,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 32 [2023-02-18 07:13:07,446 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-02-18 07:13:07,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:13:07,553 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_978 (Array (_ BitVec 64) (_ BitVec 64)))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem124#1.base| v_ArrVal_978) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (_ bv1 1))) is different from false [2023-02-18 07:13:07,573 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_978 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0) v_ArrVal_978) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0))))) is different from false [2023-02-18 07:13:07,597 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_977 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_978 (Array (_ BitVec 64) (_ BitVec 64)))) (= (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem122#1.base| v_ArrVal_977))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_978)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1))) is different from false [2023-02-18 07:13:07,623 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_977 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_978 (Array (_ BitVec 64) (_ BitVec 64)))) (= (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_977))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_978)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1))) is different from false [2023-02-18 07:13:07,656 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_977 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_976 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_978 (Array (_ BitVec 64) (_ BitVec 64)))) (= (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_976))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_977)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_978)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1))) is different from false [2023-02-18 07:13:07,672 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:13:07,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 76 [2023-02-18 07:13:07,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8671 treesize of output 6898 [2023-02-18 07:13:07,698 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 6894 treesize of output 6670 [2023-02-18 07:13:07,708 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 6670 treesize of output 5298 [2023-02-18 07:13:07,717 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 5298 treesize of output 4402