./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6c24879c 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/uthash-2.0.2/uthash_OAT_test10-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 14558cb0aef5bf60b4a230892060936885d87372f6515d5d8ad78f7b805ad735 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 01:33:37,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 01:33:37,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 01:33:37,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 01:33:37,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 01:33:37,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 01:33:37,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 01:33:37,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 01:33:37,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 01:33:37,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 01:33:37,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 01:33:37,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 01:33:37,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 01:33:37,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 01:33:37,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 01:33:37,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 01:33:37,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 01:33:37,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 01:33:37,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 01:33:37,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 01:33:37,668 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 01:33:37,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 01:33:37,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 01:33:37,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 01:33:37,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 01:33:37,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 01:33:37,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 01:33:37,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 01:33:37,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 01:33:37,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 01:33:37,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 01:33:37,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 01:33:37,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 01:33:37,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 01:33:37,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 01:33:37,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 01:33:37,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 01:33:37,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 01:33:37,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 01:33:37,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 01:33:37,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 01:33:37,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 01:33:37,684 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-13 01:33:37,704 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 01:33:37,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 01:33:37,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 01:33:37,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 01:33:37,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 01:33:37,705 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 01:33:37,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 01:33:37,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 01:33:37,706 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 01:33:37,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 01:33:37,707 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 01:33:37,707 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 01:33:37,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 01:33:37,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 01:33:37,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 01:33:37,708 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-13 01:33:37,708 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-13 01:33:37,708 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-13 01:33:37,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 01:33:37,708 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 01:33:37,708 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 01:33:37,709 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 01:33:37,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 01:33:37,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 01:33:37,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 01:33:37,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 01:33:37,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 01:33:37,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 01:33:37,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 01:33:37,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 01:33:37,710 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14558cb0aef5bf60b4a230892060936885d87372f6515d5d8ad78f7b805ad735 [2022-07-13 01:33:37,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 01:33:37,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 01:33:37,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 01:33:37,910 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 01:33:37,910 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 01:33:37,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i [2022-07-13 01:33:37,979 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f90de4efe/3becb0493d9244be90702e252a6d9e78/FLAGce07a618e [2022-07-13 01:33:38,415 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 01:33:38,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i [2022-07-13 01:33:38,428 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f90de4efe/3becb0493d9244be90702e252a6d9e78/FLAGce07a618e [2022-07-13 01:33:38,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f90de4efe/3becb0493d9244be90702e252a6d9e78 [2022-07-13 01:33:38,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 01:33:38,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 01:33:38,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 01:33:38,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 01:33:38,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 01:33:38,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 01:33:38" (1/1) ... [2022-07-13 01:33:38,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1723cafe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:33:38, skipping insertion in model container [2022-07-13 01:33:38,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 01:33:38" (1/1) ... [2022-07-13 01:33:38,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 01:33:38,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 01:33:38,774 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i[33022,33035] [2022-07-13 01:33:38,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 01:33:38,959 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) [2022-07-13 01:33:38,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@768338e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:33:38, skipping insertion in model container [2022-07-13 01:33:38,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 01:33:38,960 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-13 01:33:38,962 INFO L158 Benchmark]: Toolchain (without parser) took 519.82ms. Allocated memory is still 98.6MB. Free memory was 63.7MB in the beginning and 55.5MB in the end (delta: 8.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 01:33:38,963 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory was 51.2MB in the beginning and 51.1MB in the end (delta: 50.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 01:33:38,964 INFO L158 Benchmark]: CACSL2BoogieTranslator took 518.20ms. Allocated memory is still 98.6MB. Free memory was 63.4MB in the beginning and 55.5MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 01:33:38,966 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory was 51.2MB in the beginning and 51.1MB in the end (delta: 50.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 518.20ms. Allocated memory is still 98.6MB. Free memory was 63.4MB in the beginning and 55.5MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: 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/uthash-2.0.2/uthash_OAT_test10-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 14558cb0aef5bf60b4a230892060936885d87372f6515d5d8ad78f7b805ad735 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 01:33:40,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 01:33:40,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 01:33:40,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 01:33:40,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 01:33:40,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 01:33:40,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 01:33:40,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 01:33:40,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 01:33:40,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 01:33:40,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 01:33:40,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 01:33:40,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 01:33:40,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 01:33:40,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 01:33:40,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 01:33:40,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 01:33:40,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 01:33:40,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 01:33:40,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 01:33:40,442 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 01:33:40,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 01:33:40,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 01:33:40,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 01:33:40,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 01:33:40,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 01:33:40,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 01:33:40,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 01:33:40,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 01:33:40,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 01:33:40,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 01:33:40,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 01:33:40,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 01:33:40,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 01:33:40,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 01:33:40,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 01:33:40,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 01:33:40,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 01:33:40,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 01:33:40,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 01:33:40,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 01:33:40,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 01:33:40,454 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-13 01:33:40,470 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 01:33:40,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 01:33:40,470 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 01:33:40,471 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 01:33:40,471 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 01:33:40,471 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 01:33:40,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 01:33:40,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 01:33:40,472 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 01:33:40,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 01:33:40,473 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 01:33:40,473 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 01:33:40,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 01:33:40,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 01:33:40,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 01:33:40,474 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-13 01:33:40,474 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-13 01:33:40,474 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-13 01:33:40,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 01:33:40,474 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 01:33:40,475 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 01:33:40,475 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 01:33:40,475 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 01:33:40,475 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 01:33:40,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 01:33:40,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 01:33:40,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 01:33:40,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 01:33:40,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 01:33:40,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 01:33:40,476 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 01:33:40,477 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 01:33:40,477 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 01:33:40,477 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14558cb0aef5bf60b4a230892060936885d87372f6515d5d8ad78f7b805ad735 [2022-07-13 01:33:40,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 01:33:40,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 01:33:40,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 01:33:40,713 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 01:33:40,714 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 01:33:40,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i [2022-07-13 01:33:40,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75991eccd/bade9d3b0bce4f668ec683045fdcdb47/FLAG0ffc2bd7c [2022-07-13 01:33:41,259 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 01:33:41,260 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i [2022-07-13 01:33:41,275 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75991eccd/bade9d3b0bce4f668ec683045fdcdb47/FLAG0ffc2bd7c [2022-07-13 01:33:41,286 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75991eccd/bade9d3b0bce4f668ec683045fdcdb47 [2022-07-13 01:33:41,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 01:33:41,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 01:33:41,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 01:33:41,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 01:33:41,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 01:33:41,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 01:33:41" (1/1) ... [2022-07-13 01:33:41,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13c65f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:33:41, skipping insertion in model container [2022-07-13 01:33:41,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 01:33:41" (1/1) ... [2022-07-13 01:33:41,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 01:33:41,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 01:33:41,692 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i[33022,33035] [2022-07-13 01:33:41,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 01:33:41,870 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-13 01:33:41,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 01:33:41,907 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i[33022,33035] [2022-07-13 01:33:42,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 01:33:42,029 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 01:33:42,044 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i[33022,33035] [2022-07-13 01:33:42,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 01:33:42,142 INFO L208 MainTranslator]: Completed translation [2022-07-13 01:33:42,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:33:42 WrapperNode [2022-07-13 01:33:42,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 01:33:42,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 01:33:42,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 01:33:42,144 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 01:33:42,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:33:42" (1/1) ... [2022-07-13 01:33:42,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:33:42" (1/1) ... [2022-07-13 01:33:42,280 INFO L137 Inliner]: procedures = 180, calls = 575, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2348 [2022-07-13 01:33:42,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 01:33:42,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 01:33:42,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 01:33:42,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 01:33:42,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:33:42" (1/1) ... [2022-07-13 01:33:42,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:33:42" (1/1) ... [2022-07-13 01:33:42,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:33:42" (1/1) ... [2022-07-13 01:33:42,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:33:42" (1/1) ... [2022-07-13 01:33:42,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:33:42" (1/1) ... [2022-07-13 01:33:42,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:33:42" (1/1) ... [2022-07-13 01:33:42,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:33:42" (1/1) ... [2022-07-13 01:33:42,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 01:33:42,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 01:33:42,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 01:33:42,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 01:33:42,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:33:42" (1/1) ... [2022-07-13 01:33:42,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 01:33:42,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 01:33:42,445 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) [2022-07-13 01:33:42,467 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 [2022-07-13 01:33:42,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-13 01:33:42,474 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2022-07-13 01:33:42,475 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2022-07-13 01:33:42,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-13 01:33:42,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 01:33:42,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 01:33:42,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-13 01:33:42,476 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-13 01:33:42,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 01:33:42,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 01:33:42,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 01:33:42,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 01:33:42,477 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-13 01:33:42,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 01:33:42,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 01:33:42,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-13 01:33:42,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 01:33:42,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 01:33:42,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 01:33:42,748 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 01:33:42,749 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 01:33:42,751 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 01:33:48,900 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 01:33:48,923 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 01:33:48,927 INFO L299 CfgBuilder]: Removed 160 assume(true) statements. [2022-07-13 01:33:48,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 01:33:48 BoogieIcfgContainer [2022-07-13 01:33:48,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 01:33:48,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 01:33:48,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 01:33:48,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 01:33:48,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 01:33:41" (1/3) ... [2022-07-13 01:33:48,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681c6a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 01:33:48, skipping insertion in model container [2022-07-13 01:33:48,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:33:42" (2/3) ... [2022-07-13 01:33:48,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681c6a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 01:33:48, skipping insertion in model container [2022-07-13 01:33:48,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 01:33:48" (3/3) ... [2022-07-13 01:33:48,939 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test10-2.i [2022-07-13 01:33:48,948 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 01:33:48,949 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1095 error locations. [2022-07-13 01:33:49,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 01:33:49,015 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=FINITE_AUTOMATA, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@48b9e170, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@25108fe9 [2022-07-13 01:33:49,015 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1095 error locations. [2022-07-13 01:33:49,024 INFO L276 IsEmpty]: Start isEmpty. Operand has 2259 states, 1152 states have (on average 2.2144097222222223) internal successors, (2551), 2245 states have internal predecessors, (2551), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-13 01:33:49,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-13 01:33:49,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:33:49,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-13 01:33:49,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:33:49,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:33:49,032 INFO L85 PathProgramCache]: Analyzing trace with hash 66598, now seen corresponding path program 1 times [2022-07-13 01:33:49,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:33:49,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653126055] [2022-07-13 01:33:49,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:33:49,040 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:33:49,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:33:49,041 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:33:49,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-13 01:33:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:33:49,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 01:33:49,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:33:49,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-13 01:33:49,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:33:49,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:33:49,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:33:49,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653126055] [2022-07-13 01:33:49,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653126055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:33:49,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:33:49,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 01:33:49,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913728616] [2022-07-13 01:33:49,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:33:49,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 01:33:49,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:33:49,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 01:33:49,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 01:33:49,328 INFO L87 Difference]: Start difference. First operand has 2259 states, 1152 states have (on average 2.2144097222222223) internal successors, (2551), 2245 states have internal predecessors, (2551), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) 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) [2022-07-13 01:33:52,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:33:52,268 INFO L93 Difference]: Finished difference Result 2934 states and 3120 transitions. [2022-07-13 01:33:52,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 01:33:52,276 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 [2022-07-13 01:33:52,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:33:52,297 INFO L225 Difference]: With dead ends: 2934 [2022-07-13 01:33:52,297 INFO L226 Difference]: Without dead ends: 2932 [2022-07-13 01:33:52,298 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 [2022-07-13 01:33:52,301 INFO L413 NwaCegarLoop]: 1394 mSDtfsCounter, 2142 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2152 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 01:33:52,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2152 Valid, 1869 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 01:33:52,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2022-07-13 01:33:52,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 2401. [2022-07-13 01:33:52,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2401 states, 1318 states have (on average 2.0515933232169954) internal successors, (2704), 2385 states have internal predecessors, (2704), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-13 01:33:52,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 2736 transitions. [2022-07-13 01:33:52,397 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 2736 transitions. Word has length 3 [2022-07-13 01:33:52,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:33:52,398 INFO L495 AbstractCegarLoop]: Abstraction has 2401 states and 2736 transitions. [2022-07-13 01:33:52,398 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) [2022-07-13 01:33:52,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 2736 transitions. [2022-07-13 01:33:52,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-13 01:33:52,398 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:33:52,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-13 01:33:52,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-13 01:33:52,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:33:52,604 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:33:52,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:33:52,604 INFO L85 PathProgramCache]: Analyzing trace with hash 66599, now seen corresponding path program 1 times [2022-07-13 01:33:52,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:33:52,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110987681] [2022-07-13 01:33:52,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:33:52,605 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:33:52,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:33:52,606 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:33:52,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-13 01:33:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:33:52,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 01:33:52,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:33:52,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-13 01:33:52,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:33:52,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:33:52,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:33:52,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110987681] [2022-07-13 01:33:52,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110987681] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:33:52,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:33:52,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 01:33:52,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810454649] [2022-07-13 01:33:52,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:33:52,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 01:33:52,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:33:52,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 01:33:52,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 01:33:52,769 INFO L87 Difference]: Start difference. First operand 2401 states and 2736 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) [2022-07-13 01:33:56,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:33:56,644 INFO L93 Difference]: Finished difference Result 3371 states and 3798 transitions. [2022-07-13 01:33:56,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 01:33:56,645 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 [2022-07-13 01:33:56,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:33:56,653 INFO L225 Difference]: With dead ends: 3371 [2022-07-13 01:33:56,654 INFO L226 Difference]: Without dead ends: 3371 [2022-07-13 01:33:56,654 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 [2022-07-13 01:33:56,655 INFO L413 NwaCegarLoop]: 1951 mSDtfsCounter, 1054 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 3245 SdHoareTripleChecker+Invalid, 1518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-13 01:33:56,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 3245 Invalid, 1518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-13 01:33:56,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3371 states. [2022-07-13 01:33:56,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3371 to 2850. [2022-07-13 01:33:56,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2850 states, 1765 states have (on average 2.009631728045326) internal successors, (3547), 2831 states have internal predecessors, (3547), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-13 01:33:56,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 3585 transitions. [2022-07-13 01:33:56,708 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 3585 transitions. Word has length 3 [2022-07-13 01:33:56,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:33:56,708 INFO L495 AbstractCegarLoop]: Abstraction has 2850 states and 3585 transitions. [2022-07-13 01:33:56,708 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) [2022-07-13 01:33:56,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 3585 transitions. [2022-07-13 01:33:56,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-13 01:33:56,710 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:33:56,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:33:56,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-13 01:33:56,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:33:56,917 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:33:56,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:33:56,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1375609072, now seen corresponding path program 1 times [2022-07-13 01:33:56,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:33:56,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337168995] [2022-07-13 01:33:56,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:33:56,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:33:56,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:33:56,920 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:33:56,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-13 01:33:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:33:57,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 01:33:57,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:33:57,076 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-13 01:33:57,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-13 01:33:57,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 01:33:57,130 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-13 01:33:57,139 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 01:33:57,140 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 12 [2022-07-13 01:33:57,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:33:57,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:33:57,165 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:33:57,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337168995] [2022-07-13 01:33:57,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337168995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:33:57,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:33:57,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 01:33:57,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191559916] [2022-07-13 01:33:57,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:33:57,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:33:57,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:33:57,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:33:57,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:33:57,168 INFO L87 Difference]: Start difference. First operand 2850 states and 3585 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:04,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:04,403 INFO L93 Difference]: Finished difference Result 5481 states and 6388 transitions. [2022-07-13 01:34:04,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 01:34:04,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-07-13 01:34:04,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:04,417 INFO L225 Difference]: With dead ends: 5481 [2022-07-13 01:34:04,418 INFO L226 Difference]: Without dead ends: 5481 [2022-07-13 01:34:04,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:34:04,419 INFO L413 NwaCegarLoop]: 847 mSDtfsCounter, 2765 mSDsluCounter, 2043 mSDsCounter, 0 mSdLazyCounter, 4255 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2775 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 4283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 4255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:04,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2775 Valid, 2890 Invalid, 4283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 4255 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-07-13 01:34:04,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2022-07-13 01:34:04,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 3569. [2022-07-13 01:34:04,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3569 states, 2484 states have (on average 2.0426731078904994) internal successors, (5074), 3544 states have internal predecessors, (5074), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 01:34:04,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3569 states to 3569 states and 5124 transitions. [2022-07-13 01:34:04,484 INFO L78 Accepts]: Start accepts. Automaton has 3569 states and 5124 transitions. Word has length 7 [2022-07-13 01:34:04,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:04,485 INFO L495 AbstractCegarLoop]: Abstraction has 3569 states and 5124 transitions. [2022-07-13 01:34:04,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:04,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3569 states and 5124 transitions. [2022-07-13 01:34:04,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 01:34:04,487 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:04,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:04,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-13 01:34:04,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:34:04,694 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:34:04,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:34:04,695 INFO L85 PathProgramCache]: Analyzing trace with hash -305791726, now seen corresponding path program 1 times [2022-07-13 01:34:04,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:34:04,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460265330] [2022-07-13 01:34:04,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:34:04,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:34:04,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:34:04,697 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:34:04,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-13 01:34:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:34:04,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 01:34:04,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:34:04,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-13 01:34:04,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:34:04,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:34:04,864 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:34:04,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1460265330] [2022-07-13 01:34:04,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1460265330] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:34:04,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:34:04,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 01:34:04,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525085861] [2022-07-13 01:34:04,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:34:04,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 01:34:04,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:34:04,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 01:34:04,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 01:34:04,866 INFO L87 Difference]: Start difference. First operand 3569 states and 5124 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:07,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:07,425 INFO L93 Difference]: Finished difference Result 4773 states and 6641 transitions. [2022-07-13 01:34:07,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 01:34:07,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-07-13 01:34:07,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:07,436 INFO L225 Difference]: With dead ends: 4773 [2022-07-13 01:34:07,437 INFO L226 Difference]: Without dead ends: 4773 [2022-07-13 01:34:07,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 01:34:07,438 INFO L413 NwaCegarLoop]: 2177 mSDtfsCounter, 1998 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2008 SdHoareTripleChecker+Valid, 2933 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:07,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2008 Valid, 2933 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 01:34:07,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4773 states. [2022-07-13 01:34:07,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4773 to 3478. [2022-07-13 01:34:07,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3478 states, 2484 states have (on average 1.9569243156199678) internal successors, (4861), 3453 states have internal predecessors, (4861), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 01:34:07,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 4911 transitions. [2022-07-13 01:34:07,488 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 4911 transitions. Word has length 8 [2022-07-13 01:34:07,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:07,492 INFO L495 AbstractCegarLoop]: Abstraction has 3478 states and 4911 transitions. [2022-07-13 01:34:07,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:07,492 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 4911 transitions. [2022-07-13 01:34:07,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 01:34:07,493 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:07,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:07,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-13 01:34:07,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:34:07,700 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:34:07,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:34:07,700 INFO L85 PathProgramCache]: Analyzing trace with hash -305791725, now seen corresponding path program 1 times [2022-07-13 01:34:07,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:34:07,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849275516] [2022-07-13 01:34:07,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:34:07,701 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:34:07,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:34:07,702 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:34:07,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-13 01:34:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:34:07,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 01:34:07,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:34:07,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-13 01:34:07,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:34:07,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:34:07,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:34:07,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849275516] [2022-07-13 01:34:07,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849275516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:34:07,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:34:07,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 01:34:07,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324918495] [2022-07-13 01:34:07,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:34:07,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 01:34:07,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:34:07,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 01:34:07,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 01:34:07,878 INFO L87 Difference]: Start difference. First operand 3478 states and 4911 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:11,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:11,612 INFO L93 Difference]: Finished difference Result 5193 states and 7269 transitions. [2022-07-13 01:34:11,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 01:34:11,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-07-13 01:34:11,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:11,625 INFO L225 Difference]: With dead ends: 5193 [2022-07-13 01:34:11,625 INFO L226 Difference]: Without dead ends: 5193 [2022-07-13 01:34:11,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 01:34:11,626 INFO L413 NwaCegarLoop]: 2557 mSDtfsCounter, 1369 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 1578 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 3648 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:11,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 3648 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1578 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-13 01:34:11,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5193 states. [2022-07-13 01:34:11,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5193 to 3800. [2022-07-13 01:34:11,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3800 states, 2816 states have (on average 1.9435369318181819) internal successors, (5473), 3775 states have internal predecessors, (5473), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 01:34:11,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3800 states to 3800 states and 5523 transitions. [2022-07-13 01:34:11,701 INFO L78 Accepts]: Start accepts. Automaton has 3800 states and 5523 transitions. Word has length 8 [2022-07-13 01:34:11,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:11,701 INFO L495 AbstractCegarLoop]: Abstraction has 3800 states and 5523 transitions. [2022-07-13 01:34:11,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:11,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3800 states and 5523 transitions. [2022-07-13 01:34:11,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 01:34:11,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:11,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:11,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-13 01:34:11,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:34:11,909 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr658REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:34:11,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:34:11,909 INFO L85 PathProgramCache]: Analyzing trace with hash -690352907, now seen corresponding path program 1 times [2022-07-13 01:34:11,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:34:11,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801923927] [2022-07-13 01:34:11,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:34:11,910 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:34:11,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:34:11,911 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:34:11,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-13 01:34:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:34:12,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 01:34:12,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:34:12,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:34:12,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:34:12,071 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:34:12,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801923927] [2022-07-13 01:34:12,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801923927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:34:12,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:34:12,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 01:34:12,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907846962] [2022-07-13 01:34:12,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:34:12,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 01:34:12,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:34:12,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 01:34:12,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 01:34:12,073 INFO L87 Difference]: Start difference. First operand 3800 states and 5523 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:12,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:12,105 INFO L93 Difference]: Finished difference Result 3740 states and 5437 transitions. [2022-07-13 01:34:12,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 01:34:12,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-07-13 01:34:12,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:12,120 INFO L225 Difference]: With dead ends: 3740 [2022-07-13 01:34:12,121 INFO L226 Difference]: Without dead ends: 3740 [2022-07-13 01:34:12,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 01:34:12,124 INFO L413 NwaCegarLoop]: 2221 mSDtfsCounter, 1011 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 3437 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:12,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 3437 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 01:34:12,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3740 states. [2022-07-13 01:34:12,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3740 to 3740. [2022-07-13 01:34:12,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3740 states, 2780 states have (on average 1.9377697841726618) internal successors, (5387), 3715 states have internal predecessors, (5387), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 01:34:12,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3740 states to 3740 states and 5437 transitions. [2022-07-13 01:34:12,174 INFO L78 Accepts]: Start accepts. Automaton has 3740 states and 5437 transitions. Word has length 11 [2022-07-13 01:34:12,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:12,175 INFO L495 AbstractCegarLoop]: Abstraction has 3740 states and 5437 transitions. [2022-07-13 01:34:12,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:12,175 INFO L276 IsEmpty]: Start isEmpty. Operand 3740 states and 5437 transitions. [2022-07-13 01:34:12,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-13 01:34:12,176 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:12,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:12,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-07-13 01:34:12,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:34:12,383 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr682REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:34:12,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:34:12,383 INFO L85 PathProgramCache]: Analyzing trace with hash -2004126129, now seen corresponding path program 1 times [2022-07-13 01:34:12,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:34:12,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881279725] [2022-07-13 01:34:12,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:34:12,385 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:34:12,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:34:12,387 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:34:12,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-13 01:34:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:34:12,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 01:34:12,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:34:12,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:34:12,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:34:12,564 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:34:12,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881279725] [2022-07-13 01:34:12,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881279725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:34:12,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:34:12,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 01:34:12,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97920874] [2022-07-13 01:34:12,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:34:12,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:34:12,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:34:12,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:34:12,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:34:12,567 INFO L87 Difference]: Start difference. First operand 3740 states and 5437 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:12,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:12,641 INFO L93 Difference]: Finished difference Result 3712 states and 5381 transitions. [2022-07-13 01:34:12,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 01:34:12,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-13 01:34:12,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:12,655 INFO L225 Difference]: With dead ends: 3712 [2022-07-13 01:34:12,655 INFO L226 Difference]: Without dead ends: 3712 [2022-07-13 01:34:12,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:34:12,656 INFO L413 NwaCegarLoop]: 2176 mSDtfsCounter, 982 mSDsluCounter, 3385 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 5561 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:12,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 5561 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 01:34:12,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3712 states. [2022-07-13 01:34:12,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3712 to 3710. [2022-07-13 01:34:12,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3710 states, 2764 states have (on average 1.9280028943560057) internal successors, (5329), 3685 states have internal predecessors, (5329), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 01:34:12,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3710 states to 3710 states and 5379 transitions. [2022-07-13 01:34:12,716 INFO L78 Accepts]: Start accepts. Automaton has 3710 states and 5379 transitions. Word has length 13 [2022-07-13 01:34:12,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:12,717 INFO L495 AbstractCegarLoop]: Abstraction has 3710 states and 5379 transitions. [2022-07-13 01:34:12,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:12,717 INFO L276 IsEmpty]: Start isEmpty. Operand 3710 states and 5379 transitions. [2022-07-13 01:34:12,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-13 01:34:12,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:12,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:12,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-07-13 01:34:12,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:34:12,926 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:34:12,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:34:12,926 INFO L85 PathProgramCache]: Analyzing trace with hash 445820063, now seen corresponding path program 1 times [2022-07-13 01:34:12,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:34:12,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013068855] [2022-07-13 01:34:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:34:12,927 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:34:12,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:34:12,928 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:34:12,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-13 01:34:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:34:13,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 01:34:13,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:34:13,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:34:13,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:34:13,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:34:13,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013068855] [2022-07-13 01:34:13,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013068855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:34:13,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:34:13,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 01:34:13,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649535020] [2022-07-13 01:34:13,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:34:13,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 01:34:13,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:34:13,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 01:34:13,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 01:34:13,123 INFO L87 Difference]: Start difference. First operand 3710 states and 5379 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:13,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:13,161 INFO L93 Difference]: Finished difference Result 5158 states and 6946 transitions. [2022-07-13 01:34:13,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 01:34:13,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-13 01:34:13,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:13,170 INFO L225 Difference]: With dead ends: 5158 [2022-07-13 01:34:13,171 INFO L226 Difference]: Without dead ends: 5158 [2022-07-13 01:34:13,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 01:34:13,172 INFO L413 NwaCegarLoop]: 3496 mSDtfsCounter, 2102 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2112 SdHoareTripleChecker+Valid, 5112 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:13,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2112 Valid, 5112 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 01:34:13,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5158 states. [2022-07-13 01:34:13,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5158 to 3650. [2022-07-13 01:34:13,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 2728 states have (on average 1.9219208211143695) internal successors, (5243), 3625 states have internal predecessors, (5243), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 01:34:13,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5293 transitions. [2022-07-13 01:34:13,237 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5293 transitions. Word has length 20 [2022-07-13 01:34:13,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:13,237 INFO L495 AbstractCegarLoop]: Abstraction has 3650 states and 5293 transitions. [2022-07-13 01:34:13,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:13,238 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5293 transitions. [2022-07-13 01:34:13,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-13 01:34:13,239 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:13,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:13,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-13 01:34:13,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:34:13,448 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr334REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:34:13,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:34:13,449 INFO L85 PathProgramCache]: Analyzing trace with hash 591123743, now seen corresponding path program 1 times [2022-07-13 01:34:13,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:34:13,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297104430] [2022-07-13 01:34:13,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:34:13,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:34:13,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:34:13,451 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:34:13,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-13 01:34:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:34:13,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 01:34:13,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:34:13,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:34:13,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:34:13,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:34:13,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297104430] [2022-07-13 01:34:13,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297104430] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:34:13,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:34:13,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 01:34:13,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420451462] [2022-07-13 01:34:13,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:34:13,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 01:34:13,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:34:13,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 01:34:13,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 01:34:13,649 INFO L87 Difference]: Start difference. First operand 3650 states and 5293 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:13,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:13,700 INFO L93 Difference]: Finished difference Result 4991 states and 6655 transitions. [2022-07-13 01:34:13,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 01:34:13,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-13 01:34:13,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:13,709 INFO L225 Difference]: With dead ends: 4991 [2022-07-13 01:34:13,709 INFO L226 Difference]: Without dead ends: 4991 [2022-07-13 01:34:13,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 01:34:13,711 INFO L413 NwaCegarLoop]: 3628 mSDtfsCounter, 2059 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2069 SdHoareTripleChecker+Valid, 5196 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:13,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2069 Valid, 5196 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 01:34:13,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4991 states. [2022-07-13 01:34:13,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4991 to 3518. [2022-07-13 01:34:13,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3518 states, 2620 states have (on average 1.9026717557251909) internal successors, (4985), 3493 states have internal predecessors, (4985), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 01:34:13,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3518 states to 3518 states and 5035 transitions. [2022-07-13 01:34:13,753 INFO L78 Accepts]: Start accepts. Automaton has 3518 states and 5035 transitions. Word has length 20 [2022-07-13 01:34:13,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:13,753 INFO L495 AbstractCegarLoop]: Abstraction has 3518 states and 5035 transitions. [2022-07-13 01:34:13,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:13,754 INFO L276 IsEmpty]: Start isEmpty. Operand 3518 states and 5035 transitions. [2022-07-13 01:34:13,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-13 01:34:13,755 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:13,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:13,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-13 01:34:13,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:34:13,963 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:34:13,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:34:13,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1063651591, now seen corresponding path program 1 times [2022-07-13 01:34:13,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:34:13,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545356283] [2022-07-13 01:34:13,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:34:13,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:34:13,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:34:13,965 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:34:13,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-13 01:34:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:34:14,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 01:34:14,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:34:14,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:34:14,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:34:14,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:34:14,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545356283] [2022-07-13 01:34:14,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545356283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:34:14,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:34:14,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 01:34:14,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261842860] [2022-07-13 01:34:14,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:34:14,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:34:14,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:34:14,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:34:14,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:34:14,154 INFO L87 Difference]: Start difference. First operand 3518 states and 5035 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:14,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:14,232 INFO L93 Difference]: Finished difference Result 4956 states and 6589 transitions. [2022-07-13 01:34:14,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 01:34:14,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-07-13 01:34:14,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:14,240 INFO L225 Difference]: With dead ends: 4956 [2022-07-13 01:34:14,240 INFO L226 Difference]: Without dead ends: 4956 [2022-07-13 01:34:14,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:34:14,241 INFO L413 NwaCegarLoop]: 3588 mSDtfsCounter, 2030 mSDsluCounter, 5154 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2040 SdHoareTripleChecker+Valid, 8742 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:14,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2040 Valid, 8742 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 01:34:14,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4956 states. [2022-07-13 01:34:14,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4956 to 3488. [2022-07-13 01:34:14,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3488 states, 2604 states have (on average 1.892089093701997) internal successors, (4927), 3463 states have internal predecessors, (4927), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 01:34:14,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3488 states to 3488 states and 4977 transitions. [2022-07-13 01:34:14,292 INFO L78 Accepts]: Start accepts. Automaton has 3488 states and 4977 transitions. Word has length 22 [2022-07-13 01:34:14,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:14,292 INFO L495 AbstractCegarLoop]: Abstraction has 3488 states and 4977 transitions. [2022-07-13 01:34:14,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:14,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3488 states and 4977 transitions. [2022-07-13 01:34:14,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-13 01:34:14,295 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:14,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:14,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-13 01:34:14,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:34:14,504 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr359REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:34:14,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:34:14,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1134259450, now seen corresponding path program 1 times [2022-07-13 01:34:14,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:34:14,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292754305] [2022-07-13 01:34:14,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:34:14,505 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:34:14,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:34:14,506 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:34:14,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-13 01:34:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:34:14,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 01:34:14,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:34:14,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:34:14,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:34:14,725 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:34:14,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292754305] [2022-07-13 01:34:14,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292754305] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:34:14,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:34:14,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 01:34:14,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083739178] [2022-07-13 01:34:14,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:34:14,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:34:14,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:34:14,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:34:14,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:34:14,727 INFO L87 Difference]: Start difference. First operand 3488 states and 4977 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:14,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:14,797 INFO L93 Difference]: Finished difference Result 4883 states and 6400 transitions. [2022-07-13 01:34:14,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 01:34:14,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-07-13 01:34:14,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:14,805 INFO L225 Difference]: With dead ends: 4883 [2022-07-13 01:34:14,805 INFO L226 Difference]: Without dead ends: 4883 [2022-07-13 01:34:14,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:34:14,806 INFO L413 NwaCegarLoop]: 3513 mSDtfsCounter, 1995 mSDsluCounter, 5039 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 8552 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:14,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2005 Valid, 8552 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 01:34:14,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4883 states. [2022-07-13 01:34:14,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4883 to 3426. [2022-07-13 01:34:14,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3426 states, 2556 states have (on average 1.859546165884194) internal successors, (4753), 3401 states have internal predecessors, (4753), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 01:34:14,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3426 states to 3426 states and 4803 transitions. [2022-07-13 01:34:14,844 INFO L78 Accepts]: Start accepts. Automaton has 3426 states and 4803 transitions. Word has length 22 [2022-07-13 01:34:14,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:14,845 INFO L495 AbstractCegarLoop]: Abstraction has 3426 states and 4803 transitions. [2022-07-13 01:34:14,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:14,845 INFO L276 IsEmpty]: Start isEmpty. Operand 3426 states and 4803 transitions. [2022-07-13 01:34:14,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-13 01:34:14,845 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:14,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:14,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-13 01:34:15,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:34:15,055 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr696REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:34:15,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:34:15,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519613, now seen corresponding path program 1 times [2022-07-13 01:34:15,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:34:15,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092962358] [2022-07-13 01:34:15,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:34:15,056 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:34:15,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:34:15,057 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:34:15,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-13 01:34:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:34:15,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 01:34:15,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:34:15,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-13 01:34:15,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:34:15,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:34:15,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:34:15,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092962358] [2022-07-13 01:34:15,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092962358] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:34:15,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:34:15,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 01:34:15,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800780202] [2022-07-13 01:34:15,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:34:15,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:34:15,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:34:15,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:34:15,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:34:15,260 INFO L87 Difference]: Start difference. First operand 3426 states and 4803 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:17,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:17,883 INFO L93 Difference]: Finished difference Result 3878 states and 5162 transitions. [2022-07-13 01:34:17,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 01:34:17,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-13 01:34:17,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:17,889 INFO L225 Difference]: With dead ends: 3878 [2022-07-13 01:34:17,889 INFO L226 Difference]: Without dead ends: 3878 [2022-07-13 01:34:17,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:34:17,889 INFO L413 NwaCegarLoop]: 1244 mSDtfsCounter, 2745 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2751 SdHoareTripleChecker+Valid, 2342 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:17,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2751 Valid, 2342 Invalid, 1817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 01:34:17,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2022-07-13 01:34:17,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3422. [2022-07-13 01:34:17,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3422 states, 2556 states have (on average 1.85641627543036) internal successors, (4745), 3397 states have internal predecessors, (4745), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 01:34:17,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3422 states to 3422 states and 4795 transitions. [2022-07-13 01:34:17,917 INFO L78 Accepts]: Start accepts. Automaton has 3422 states and 4795 transitions. Word has length 27 [2022-07-13 01:34:17,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:17,917 INFO L495 AbstractCegarLoop]: Abstraction has 3422 states and 4795 transitions. [2022-07-13 01:34:17,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:17,917 INFO L276 IsEmpty]: Start isEmpty. Operand 3422 states and 4795 transitions. [2022-07-13 01:34:17,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-13 01:34:17,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:17,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:17,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-07-13 01:34:18,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:34:18,125 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr697REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:34:18,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:34:18,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519614, now seen corresponding path program 1 times [2022-07-13 01:34:18,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:34:18,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062428495] [2022-07-13 01:34:18,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:34:18,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:34:18,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:34:18,127 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:34:18,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-13 01:34:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:34:18,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 01:34:18,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:34:18,300 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-13 01:34:18,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:34:18,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:34:18,400 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:34:18,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062428495] [2022-07-13 01:34:18,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062428495] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:34:18,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:34:18,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 01:34:18,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014204528] [2022-07-13 01:34:18,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:34:18,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:34:18,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:34:18,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:34:18,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:34:18,402 INFO L87 Difference]: Start difference. First operand 3422 states and 4795 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:22,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:22,626 INFO L93 Difference]: Finished difference Result 4323 states and 5779 transitions. [2022-07-13 01:34:22,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 01:34:22,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-13 01:34:22,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:22,632 INFO L225 Difference]: With dead ends: 4323 [2022-07-13 01:34:22,633 INFO L226 Difference]: Without dead ends: 4323 [2022-07-13 01:34:22,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:34:22,633 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 1907 mSDsluCounter, 2163 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1907 SdHoareTripleChecker+Valid, 3817 SdHoareTripleChecker+Invalid, 2311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:22,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1907 Valid, 3817 Invalid, 2311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2299 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-13 01:34:22,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4323 states. [2022-07-13 01:34:22,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4323 to 3458. [2022-07-13 01:34:22,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3458 states, 2592 states have (on average 1.8464506172839505) internal successors, (4786), 3433 states have internal predecessors, (4786), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 01:34:22,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 4836 transitions. [2022-07-13 01:34:22,667 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 4836 transitions. Word has length 27 [2022-07-13 01:34:22,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:22,667 INFO L495 AbstractCegarLoop]: Abstraction has 3458 states and 4836 transitions. [2022-07-13 01:34:22,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:22,668 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 4836 transitions. [2022-07-13 01:34:22,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-13 01:34:22,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:22,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:22,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-13 01:34:22,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:34:22,878 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:34:22,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:34:22,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128551, now seen corresponding path program 1 times [2022-07-13 01:34:22,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:34:22,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998520352] [2022-07-13 01:34:22,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:34:22,879 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:34:22,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:34:22,880 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:34:22,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-13 01:34:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:34:23,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 01:34:23,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:34:23,077 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-13 01:34:23,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:34:23,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:34:23,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:34:23,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998520352] [2022-07-13 01:34:23,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998520352] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:34:23,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:34:23,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 01:34:23,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060714238] [2022-07-13 01:34:23,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:34:23,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:34:23,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:34:23,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:34:23,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:34:23,121 INFO L87 Difference]: Start difference. First operand 3458 states and 4836 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:26,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:26,851 INFO L93 Difference]: Finished difference Result 6686 states and 9193 transitions. [2022-07-13 01:34:26,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 01:34:26,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-07-13 01:34:26,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:26,859 INFO L225 Difference]: With dead ends: 6686 [2022-07-13 01:34:26,859 INFO L226 Difference]: Without dead ends: 6686 [2022-07-13 01:34:26,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:34:26,859 INFO L413 NwaCegarLoop]: 2703 mSDtfsCounter, 3693 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 2953 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3700 SdHoareTripleChecker+Valid, 4839 SdHoareTripleChecker+Invalid, 2996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:26,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3700 Valid, 4839 Invalid, 2996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2953 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-13 01:34:26,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6686 states. [2022-07-13 01:34:26,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6686 to 3454. [2022-07-13 01:34:26,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3454 states, 2592 states have (on average 1.8433641975308641) internal successors, (4778), 3429 states have internal predecessors, (4778), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 01:34:26,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3454 states to 3454 states and 4828 transitions. [2022-07-13 01:34:26,904 INFO L78 Accepts]: Start accepts. Automaton has 3454 states and 4828 transitions. Word has length 36 [2022-07-13 01:34:26,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:26,904 INFO L495 AbstractCegarLoop]: Abstraction has 3454 states and 4828 transitions. [2022-07-13 01:34:26,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:26,905 INFO L276 IsEmpty]: Start isEmpty. Operand 3454 states and 4828 transitions. [2022-07-13 01:34:26,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-13 01:34:26,905 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:26,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:26,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-13 01:34:27,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:34:27,114 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:34:27,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:34:27,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128552, now seen corresponding path program 1 times [2022-07-13 01:34:27,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:34:27,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [421032814] [2022-07-13 01:34:27,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:34:27,115 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:34:27,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:34:27,116 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:34:27,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-13 01:34:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:34:27,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 01:34:27,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:34:27,300 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-13 01:34:27,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:34:27,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:34:27,400 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:34:27,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [421032814] [2022-07-13 01:34:27,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [421032814] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:34:27,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:34:27,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 01:34:27,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351269046] [2022-07-13 01:34:27,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:34:27,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:34:27,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:34:27,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:34:27,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:34:27,402 INFO L87 Difference]: Start difference. First operand 3454 states and 4828 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:32,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:32,713 INFO L93 Difference]: Finished difference Result 6369 states and 8585 transitions. [2022-07-13 01:34:32,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 01:34:32,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-07-13 01:34:32,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:32,719 INFO L225 Difference]: With dead ends: 6369 [2022-07-13 01:34:32,719 INFO L226 Difference]: Without dead ends: 6369 [2022-07-13 01:34:32,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:34:32,720 INFO L413 NwaCegarLoop]: 2653 mSDtfsCounter, 3063 mSDsluCounter, 2614 mSDsCounter, 0 mSdLazyCounter, 2951 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3067 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 2963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:32,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3067 Valid, 5267 Invalid, 2963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2951 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-13 01:34:32,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6369 states. [2022-07-13 01:34:32,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6369 to 3450. [2022-07-13 01:34:32,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3450 states, 2592 states have (on average 1.8402777777777777) internal successors, (4770), 3425 states have internal predecessors, (4770), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 01:34:32,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3450 states to 3450 states and 4820 transitions. [2022-07-13 01:34:32,759 INFO L78 Accepts]: Start accepts. Automaton has 3450 states and 4820 transitions. Word has length 36 [2022-07-13 01:34:32,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:32,759 INFO L495 AbstractCegarLoop]: Abstraction has 3450 states and 4820 transitions. [2022-07-13 01:34:32,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:32,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3450 states and 4820 transitions. [2022-07-13 01:34:32,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-13 01:34:32,760 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:32,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:32,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-13 01:34:32,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:34:32,975 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr372REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:34:32,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:34:32,976 INFO L85 PathProgramCache]: Analyzing trace with hash -526454297, now seen corresponding path program 1 times [2022-07-13 01:34:32,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:34:32,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544731340] [2022-07-13 01:34:32,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:34:32,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:34:32,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:34:32,977 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:34:32,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-13 01:34:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:34:33,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 01:34:33,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:34:33,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-13 01:34:33,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:34:33,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:34:33,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:34:33,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544731340] [2022-07-13 01:34:33,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544731340] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:34:33,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:34:33,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 01:34:33,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029080595] [2022-07-13 01:34:33,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:34:33,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:34:33,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:34:33,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:34:33,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:34:33,217 INFO L87 Difference]: Start difference. First operand 3450 states and 4820 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:37,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:37,524 INFO L93 Difference]: Finished difference Result 7130 states and 9705 transitions. [2022-07-13 01:34:37,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 01:34:37,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-07-13 01:34:37,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:37,532 INFO L225 Difference]: With dead ends: 7130 [2022-07-13 01:34:37,533 INFO L226 Difference]: Without dead ends: 7130 [2022-07-13 01:34:37,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:34:37,533 INFO L413 NwaCegarLoop]: 2271 mSDtfsCounter, 4685 mSDsluCounter, 2326 mSDsCounter, 0 mSdLazyCounter, 2965 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4695 SdHoareTripleChecker+Valid, 4597 SdHoareTripleChecker+Invalid, 3016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:37,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4695 Valid, 4597 Invalid, 3016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2965 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-13 01:34:37,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7130 states. [2022-07-13 01:34:37,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7130 to 3447. [2022-07-13 01:34:37,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3447 states, 2592 states have (on average 1.8317901234567902) internal successors, (4748), 3422 states have internal predecessors, (4748), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 01:34:37,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3447 states to 3447 states and 4798 transitions. [2022-07-13 01:34:37,574 INFO L78 Accepts]: Start accepts. Automaton has 3447 states and 4798 transitions. Word has length 36 [2022-07-13 01:34:37,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:37,575 INFO L495 AbstractCegarLoop]: Abstraction has 3447 states and 4798 transitions. [2022-07-13 01:34:37,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:37,575 INFO L276 IsEmpty]: Start isEmpty. Operand 3447 states and 4798 transitions. [2022-07-13 01:34:37,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-13 01:34:37,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:37,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:37,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-13 01:34:37,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:34:37,783 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr373REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:34:37,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:34:37,784 INFO L85 PathProgramCache]: Analyzing trace with hash -526454296, now seen corresponding path program 1 times [2022-07-13 01:34:37,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:34:37,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974694462] [2022-07-13 01:34:37,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:34:37,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:34:37,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:34:37,785 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:34:37,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-13 01:34:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:34:37,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 01:34:37,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:34:37,977 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-13 01:34:38,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:34:38,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:34:38,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:34:38,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974694462] [2022-07-13 01:34:38,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974694462] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:34:38,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:34:38,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 01:34:38,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809968656] [2022-07-13 01:34:38,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:34:38,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:34:38,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:34:38,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:34:38,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:34:38,071 INFO L87 Difference]: Start difference. First operand 3447 states and 4798 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:42,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:42,564 INFO L93 Difference]: Finished difference Result 5205 states and 6971 transitions. [2022-07-13 01:34:42,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 01:34:42,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-07-13 01:34:42,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:42,569 INFO L225 Difference]: With dead ends: 5205 [2022-07-13 01:34:42,569 INFO L226 Difference]: Without dead ends: 5205 [2022-07-13 01:34:42,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:34:42,570 INFO L413 NwaCegarLoop]: 2560 mSDtfsCounter, 2416 mSDsluCounter, 2187 mSDsCounter, 0 mSdLazyCounter, 2623 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2416 SdHoareTripleChecker+Valid, 4747 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:42,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2416 Valid, 4747 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2623 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-13 01:34:42,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5205 states. [2022-07-13 01:34:42,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5205 to 3447. [2022-07-13 01:34:42,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3447 states, 2592 states have (on average 1.8287037037037037) internal successors, (4740), 3422 states have internal predecessors, (4740), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 01:34:42,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3447 states to 3447 states and 4790 transitions. [2022-07-13 01:34:42,601 INFO L78 Accepts]: Start accepts. Automaton has 3447 states and 4790 transitions. Word has length 36 [2022-07-13 01:34:42,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:42,601 INFO L495 AbstractCegarLoop]: Abstraction has 3447 states and 4790 transitions. [2022-07-13 01:34:42,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:42,601 INFO L276 IsEmpty]: Start isEmpty. Operand 3447 states and 4790 transitions. [2022-07-13 01:34:42,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-13 01:34:42,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:42,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:42,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-13 01:34:42,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:34:42,802 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:34:42,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:34:42,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1782356879, now seen corresponding path program 1 times [2022-07-13 01:34:42,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:34:42,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84843351] [2022-07-13 01:34:42,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:34:42,803 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:34:42,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:34:42,804 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:34:42,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-13 01:34:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:34:42,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 01:34:42,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:34:43,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:34:43,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:34:43,012 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:34:43,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84843351] [2022-07-13 01:34:43,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84843351] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:34:43,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:34:43,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 01:34:43,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786567326] [2022-07-13 01:34:43,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:34:43,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:34:43,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:34:43,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:34:43,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:34:43,016 INFO L87 Difference]: Start difference. First operand 3447 states and 4790 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:43,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:43,070 INFO L93 Difference]: Finished difference Result 3435 states and 4766 transitions. [2022-07-13 01:34:43,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 01:34:43,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-07-13 01:34:43,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:43,074 INFO L225 Difference]: With dead ends: 3435 [2022-07-13 01:34:43,074 INFO L226 Difference]: Without dead ends: 3435 [2022-07-13 01:34:43,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:34:43,075 INFO L413 NwaCegarLoop]: 2007 mSDtfsCounter, 966 mSDsluCounter, 3035 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 5042 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:43,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 5042 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 01:34:43,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2022-07-13 01:34:43,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 3435. [2022-07-13 01:34:43,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3435 states, 2580 states have (on average 1.827906976744186) internal successors, (4716), 3410 states have internal predecessors, (4716), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 01:34:43,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3435 states to 3435 states and 4766 transitions. [2022-07-13 01:34:43,108 INFO L78 Accepts]: Start accepts. Automaton has 3435 states and 4766 transitions. Word has length 40 [2022-07-13 01:34:43,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:43,109 INFO L495 AbstractCegarLoop]: Abstraction has 3435 states and 4766 transitions. [2022-07-13 01:34:43,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:43,109 INFO L276 IsEmpty]: Start isEmpty. Operand 3435 states and 4766 transitions. [2022-07-13 01:34:43,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-13 01:34:43,109 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:43,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:43,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-13 01:34:43,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:34:43,317 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:34:43,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:34:43,318 INFO L85 PathProgramCache]: Analyzing trace with hash -263031357, now seen corresponding path program 1 times [2022-07-13 01:34:43,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:34:43,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139868996] [2022-07-13 01:34:43,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:34:43,319 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:34:43,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:34:43,320 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:34:43,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-13 01:34:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:34:43,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 01:34:43,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:34:43,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:34:43,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:34:43,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:34:43,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139868996] [2022-07-13 01:34:43,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139868996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:34:43,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:34:43,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 01:34:43,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000913659] [2022-07-13 01:34:43,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:34:43,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 01:34:43,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:34:43,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 01:34:43,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 01:34:43,628 INFO L87 Difference]: Start difference. First operand 3435 states and 4766 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:43,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:43,832 INFO L93 Difference]: Finished difference Result 5077 states and 6789 transitions. [2022-07-13 01:34:43,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 01:34:43,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-07-13 01:34:43,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:43,838 INFO L225 Difference]: With dead ends: 5077 [2022-07-13 01:34:43,838 INFO L226 Difference]: Without dead ends: 5077 [2022-07-13 01:34:43,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 01:34:43,838 INFO L413 NwaCegarLoop]: 2098 mSDtfsCounter, 1382 mSDsluCounter, 1854 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 3952 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:43,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1391 Valid, 3952 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 01:34:43,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5077 states. [2022-07-13 01:34:43,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5077 to 4452. [2022-07-13 01:34:43,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4452 states, 3590 states have (on average 1.8147632311977715) internal successors, (6515), 4417 states have internal predecessors, (6515), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-13 01:34:43,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4452 states to 4452 states and 6585 transitions. [2022-07-13 01:34:43,903 INFO L78 Accepts]: Start accepts. Automaton has 4452 states and 6585 transitions. Word has length 48 [2022-07-13 01:34:43,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:43,903 INFO L495 AbstractCegarLoop]: Abstraction has 4452 states and 6585 transitions. [2022-07-13 01:34:43,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:43,904 INFO L276 IsEmpty]: Start isEmpty. Operand 4452 states and 6585 transitions. [2022-07-13 01:34:43,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-13 01:34:43,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:43,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:43,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-13 01:34:44,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:34:44,112 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:34:44,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:34:44,113 INFO L85 PathProgramCache]: Analyzing trace with hash -435335443, now seen corresponding path program 1 times [2022-07-13 01:34:44,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:34:44,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661291419] [2022-07-13 01:34:44,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:34:44,113 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:34:44,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:34:44,115 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:34:44,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-13 01:34:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:34:44,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 01:34:44,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:34:44,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:34:44,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:34:44,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:34:44,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661291419] [2022-07-13 01:34:44,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661291419] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:34:44,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:34:44,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 01:34:44,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153193040] [2022-07-13 01:34:44,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:34:44,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:34:44,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:34:44,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:34:44,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:34:44,359 INFO L87 Difference]: Start difference. First operand 4452 states and 6585 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:44,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:44,417 INFO L93 Difference]: Finished difference Result 5586 states and 7773 transitions. [2022-07-13 01:34:44,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 01:34:44,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-07-13 01:34:44,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:44,424 INFO L225 Difference]: With dead ends: 5586 [2022-07-13 01:34:44,424 INFO L226 Difference]: Without dead ends: 5586 [2022-07-13 01:34:44,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:34:44,425 INFO L413 NwaCegarLoop]: 3060 mSDtfsCounter, 1965 mSDsluCounter, 4357 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1975 SdHoareTripleChecker+Valid, 7417 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:44,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1975 Valid, 7417 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 01:34:44,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5586 states. [2022-07-13 01:34:44,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5586 to 4410. [2022-07-13 01:34:44,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4410 states, 3548 states have (on average 1.8165163472378805) internal successors, (6445), 4375 states have internal predecessors, (6445), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-13 01:34:44,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4410 states to 4410 states and 6515 transitions. [2022-07-13 01:34:44,469 INFO L78 Accepts]: Start accepts. Automaton has 4410 states and 6515 transitions. Word has length 51 [2022-07-13 01:34:44,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:44,469 INFO L495 AbstractCegarLoop]: Abstraction has 4410 states and 6515 transitions. [2022-07-13 01:34:44,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:44,470 INFO L276 IsEmpty]: Start isEmpty. Operand 4410 states and 6515 transitions. [2022-07-13 01:34:44,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-13 01:34:44,470 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:44,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:44,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-13 01:34:44,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:34:44,679 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:34:44,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:34:44,680 INFO L85 PathProgramCache]: Analyzing trace with hash -273786554, now seen corresponding path program 1 times [2022-07-13 01:34:44,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:34:44,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380044375] [2022-07-13 01:34:44,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:34:44,680 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:34:44,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:34:44,682 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:34:44,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-13 01:34:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:34:44,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 01:34:44,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:34:44,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:34:44,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:34:44,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:34:44,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380044375] [2022-07-13 01:34:44,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380044375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:34:44,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:34:44,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 01:34:44,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231856600] [2022-07-13 01:34:44,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:34:44,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:34:44,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:34:44,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:34:44,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:34:44,972 INFO L87 Difference]: Start difference. First operand 4410 states and 6515 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:45,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:45,029 INFO L93 Difference]: Finished difference Result 5322 states and 7259 transitions. [2022-07-13 01:34:45,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 01:34:45,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-07-13 01:34:45,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:45,036 INFO L225 Difference]: With dead ends: 5322 [2022-07-13 01:34:45,037 INFO L226 Difference]: Without dead ends: 5322 [2022-07-13 01:34:45,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:34:45,038 INFO L413 NwaCegarLoop]: 3322 mSDtfsCounter, 1956 mSDsluCounter, 4668 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1966 SdHoareTripleChecker+Valid, 7990 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:45,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1966 Valid, 7990 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 01:34:45,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5322 states. [2022-07-13 01:34:45,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5322 to 4392. [2022-07-13 01:34:45,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4392 states, 3530 states have (on average 1.8172804532577904) internal successors, (6415), 4357 states have internal predecessors, (6415), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-13 01:34:45,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 6485 transitions. [2022-07-13 01:34:45,082 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 6485 transitions. Word has length 54 [2022-07-13 01:34:45,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:45,082 INFO L495 AbstractCegarLoop]: Abstraction has 4392 states and 6485 transitions. [2022-07-13 01:34:45,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:45,082 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 6485 transitions. [2022-07-13 01:34:45,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-13 01:34:45,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:45,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:45,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-07-13 01:34:45,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:34:45,292 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:34:45,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:34:45,293 INFO L85 PathProgramCache]: Analyzing trace with hash -665468730, now seen corresponding path program 1 times [2022-07-13 01:34:45,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:34:45,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945746581] [2022-07-13 01:34:45,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:34:45,293 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:34:45,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:34:45,294 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:34:45,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-13 01:34:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:34:45,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 01:34:45,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:34:45,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 01:34:45,517 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 01:34:45,554 INFO L356 Elim1Store]: treesize reduction 165, result has 13.6 percent of original size [2022-07-13 01:34:45,554 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 29 treesize of output 36 [2022-07-13 01:34:45,576 INFO L356 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-07-13 01:34:45,576 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 20 [2022-07-13 01:34:45,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:34:45,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:34:45,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:34:45,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945746581] [2022-07-13 01:34:45,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945746581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:34:45,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:34:45,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 01:34:45,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588000760] [2022-07-13 01:34:45,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:34:45,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:34:45,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:34:45,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:34:45,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:34:45,592 INFO L87 Difference]: Start difference. First operand 4392 states and 6485 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:46,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:46,785 INFO L93 Difference]: Finished difference Result 4496 states and 6595 transitions. [2022-07-13 01:34:46,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 01:34:46,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-07-13 01:34:46,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:46,790 INFO L225 Difference]: With dead ends: 4496 [2022-07-13 01:34:46,791 INFO L226 Difference]: Without dead ends: 4496 [2022-07-13 01:34:46,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:34:46,791 INFO L413 NwaCegarLoop]: 1895 mSDtfsCounter, 907 mSDsluCounter, 2951 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 4846 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:46,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 4846 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 302 Invalid, 0 Unknown, 122 Unchecked, 1.1s Time] [2022-07-13 01:34:46,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4496 states. [2022-07-13 01:34:46,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4496 to 4358. [2022-07-13 01:34:46,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4358 states, 3496 states have (on average 1.8249427917620138) internal successors, (6380), 4323 states have internal predecessors, (6380), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-13 01:34:46,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4358 states to 4358 states and 6450 transitions. [2022-07-13 01:34:46,826 INFO L78 Accepts]: Start accepts. Automaton has 4358 states and 6450 transitions. Word has length 57 [2022-07-13 01:34:46,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:46,827 INFO L495 AbstractCegarLoop]: Abstraction has 4358 states and 6450 transitions. [2022-07-13 01:34:46,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:46,827 INFO L276 IsEmpty]: Start isEmpty. Operand 4358 states and 6450 transitions. [2022-07-13 01:34:46,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-13 01:34:46,827 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:46,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:46,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-13 01:34:47,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:34:47,036 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:34:47,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:34:47,037 INFO L85 PathProgramCache]: Analyzing trace with hash 122106401, now seen corresponding path program 1 times [2022-07-13 01:34:47,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:34:47,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182506695] [2022-07-13 01:34:47,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:34:47,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:34:47,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:34:47,038 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:34:47,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-13 01:34:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:34:47,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 01:34:47,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:34:47,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:34:47,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:34:47,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:34:47,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182506695] [2022-07-13 01:34:47,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182506695] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:34:47,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:34:47,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 01:34:47,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736220722] [2022-07-13 01:34:47,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:34:47,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 01:34:47,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:34:47,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 01:34:47,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 01:34:47,424 INFO L87 Difference]: Start difference. First operand 4358 states and 6450 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:47,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:47,569 INFO L93 Difference]: Finished difference Result 5982 states and 8540 transitions. [2022-07-13 01:34:47,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 01:34:47,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-07-13 01:34:47,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:47,575 INFO L225 Difference]: With dead ends: 5982 [2022-07-13 01:34:47,576 INFO L226 Difference]: Without dead ends: 5982 [2022-07-13 01:34:47,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 01:34:47,576 INFO L413 NwaCegarLoop]: 2433 mSDtfsCounter, 1079 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 4315 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:47,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 4315 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 01:34:47,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5982 states. [2022-07-13 01:34:47,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5982 to 5431. [2022-07-13 01:34:47,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5431 states, 4561 states have (on average 1.8013593510195132) internal successors, (8216), 5385 states have internal predecessors, (8216), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2022-07-13 01:34:47,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5431 states to 5431 states and 8308 transitions. [2022-07-13 01:34:47,624 INFO L78 Accepts]: Start accepts. Automaton has 5431 states and 8308 transitions. Word has length 59 [2022-07-13 01:34:47,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:47,624 INFO L495 AbstractCegarLoop]: Abstraction has 5431 states and 8308 transitions. [2022-07-13 01:34:47,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:47,625 INFO L276 IsEmpty]: Start isEmpty. Operand 5431 states and 8308 transitions. [2022-07-13 01:34:47,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 01:34:47,625 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:47,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:47,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-13 01:34:47,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:34:47,834 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:34:47,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:34:47,835 INFO L85 PathProgramCache]: Analyzing trace with hash -45497454, now seen corresponding path program 1 times [2022-07-13 01:34:47,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:34:47,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182713616] [2022-07-13 01:34:47,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:34:47,836 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:34:47,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:34:47,837 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:34:47,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-13 01:34:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:34:48,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 01:34:48,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:34:48,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-13 01:34:48,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-13 01:34:48,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 01:34:48,435 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-13 01:34:48,453 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 01:34:48,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 [2022-07-13 01:34:48,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:34:48,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:34:48,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:34:48,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182713616] [2022-07-13 01:34:48,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182713616] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:34:48,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:34:48,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 01:34:48,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220372555] [2022-07-13 01:34:48,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:34:48,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:34:48,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:34:48,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:34:48,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:34:48,463 INFO L87 Difference]: Start difference. First operand 5431 states and 8308 transitions. Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:51,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:51,679 INFO L93 Difference]: Finished difference Result 7850 states and 12031 transitions. [2022-07-13 01:34:51,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 01:34:51,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-13 01:34:51,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:51,688 INFO L225 Difference]: With dead ends: 7850 [2022-07-13 01:34:51,689 INFO L226 Difference]: Without dead ends: 7850 [2022-07-13 01:34:51,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:34:51,689 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 4067 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4081 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:51,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4081 Valid, 1363 Invalid, 1783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-13 01:34:51,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7850 states. [2022-07-13 01:34:51,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7850 to 5191. [2022-07-13 01:34:51,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 4405 states have (on average 1.7332576617480135) internal successors, (7635), 5145 states have internal predecessors, (7635), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2022-07-13 01:34:51,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 7727 transitions. [2022-07-13 01:34:51,763 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 7727 transitions. Word has length 62 [2022-07-13 01:34:51,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:51,763 INFO L495 AbstractCegarLoop]: Abstraction has 5191 states and 7727 transitions. [2022-07-13 01:34:51,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:51,763 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 7727 transitions. [2022-07-13 01:34:51,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 01:34:51,764 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:51,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:51,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-07-13 01:34:51,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:34:51,975 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:34:51,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:34:51,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391416, now seen corresponding path program 1 times [2022-07-13 01:34:51,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:34:51,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588961426] [2022-07-13 01:34:51,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:34:51,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:34:51,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:34:51,978 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:34:51,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-13 01:34:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:34:52,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 01:34:52,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:34:52,244 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-13 01:34:52,250 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 01:34:52,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 9 [2022-07-13 01:34:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:34:52,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:34:52,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:34:52,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588961426] [2022-07-13 01:34:52,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588961426] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:34:52,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:34:52,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 01:34:52,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636076644] [2022-07-13 01:34:52,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:34:52,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 01:34:52,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:34:52,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 01:34:52,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:34:52,284 INFO L87 Difference]: Start difference. First operand 5191 states and 7727 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:55,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:55,181 INFO L93 Difference]: Finished difference Result 5190 states and 7724 transitions. [2022-07-13 01:34:55,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 01:34:55,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-13 01:34:55,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:55,186 INFO L225 Difference]: With dead ends: 5190 [2022-07-13 01:34:55,186 INFO L226 Difference]: Without dead ends: 5190 [2022-07-13 01:34:55,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-13 01:34:55,187 INFO L413 NwaCegarLoop]: 1926 mSDtfsCounter, 4 mSDsluCounter, 3188 mSDsCounter, 0 mSdLazyCounter, 2595 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5114 SdHoareTripleChecker+Invalid, 2596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:55,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5114 Invalid, 2596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2595 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 01:34:55,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5190 states. [2022-07-13 01:34:55,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5190 to 5190. [2022-07-13 01:34:55,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5190 states, 4405 states have (on average 1.7325766174801362) internal successors, (7632), 5144 states have internal predecessors, (7632), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2022-07-13 01:34:55,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5190 states to 5190 states and 7724 transitions. [2022-07-13 01:34:55,240 INFO L78 Accepts]: Start accepts. Automaton has 5190 states and 7724 transitions. Word has length 67 [2022-07-13 01:34:55,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:55,241 INFO L495 AbstractCegarLoop]: Abstraction has 5190 states and 7724 transitions. [2022-07-13 01:34:55,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:55,241 INFO L276 IsEmpty]: Start isEmpty. Operand 5190 states and 7724 transitions. [2022-07-13 01:34:55,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 01:34:55,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:55,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:55,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-07-13 01:34:55,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:34:55,451 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:34:55,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:34:55,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391415, now seen corresponding path program 1 times [2022-07-13 01:34:55,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:34:55,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588211329] [2022-07-13 01:34:55,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:34:55,452 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:34:55,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:34:55,453 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:34:55,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-13 01:34:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:34:55,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 01:34:55,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:34:55,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-13 01:34:55,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 01:34:55,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 01:34:55,770 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 9 [2022-07-13 01:34:55,772 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 01:34:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:34:55,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:34:55,782 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:34:55,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588211329] [2022-07-13 01:34:55,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588211329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:34:55,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:34:55,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 01:34:55,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893982195] [2022-07-13 01:34:55,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:34:55,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 01:34:55,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:34:55,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 01:34:55,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:34:55,783 INFO L87 Difference]: Start difference. First operand 5190 states and 7724 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:59,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:34:59,878 INFO L93 Difference]: Finished difference Result 5189 states and 7721 transitions. [2022-07-13 01:34:59,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 01:34:59,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-13 01:34:59,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:34:59,883 INFO L225 Difference]: With dead ends: 5189 [2022-07-13 01:34:59,883 INFO L226 Difference]: Without dead ends: 5189 [2022-07-13 01:34:59,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-13 01:34:59,884 INFO L413 NwaCegarLoop]: 1926 mSDtfsCounter, 2 mSDsluCounter, 3177 mSDsCounter, 0 mSdLazyCounter, 2604 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5103 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-13 01:34:59,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5103 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2604 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-13 01:34:59,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5189 states. [2022-07-13 01:34:59,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5189 to 5189. [2022-07-13 01:34:59,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 4402 states have (on average 1.7330758746024535) internal successors, (7629), 5143 states have internal predecessors, (7629), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2022-07-13 01:34:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 7721 transitions. [2022-07-13 01:34:59,926 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 7721 transitions. Word has length 67 [2022-07-13 01:34:59,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:34:59,926 INFO L495 AbstractCegarLoop]: Abstraction has 5189 states and 7721 transitions. [2022-07-13 01:34:59,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:34:59,926 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 7721 transitions. [2022-07-13 01:34:59,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 01:34:59,927 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:34:59,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:34:59,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-07-13 01:35:00,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:35:00,136 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr396REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:35:00,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:35:00,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564532, now seen corresponding path program 1 times [2022-07-13 01:35:00,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:35:00,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513661072] [2022-07-13 01:35:00,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:35:00,137 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:35:00,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:35:00,138 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:35:00,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-07-13 01:35:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:35:00,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 01:35:00,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:35:00,413 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-13 01:35:00,421 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 01:35:00,437 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 9 [2022-07-13 01:35:00,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:35:00,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:35:00,458 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:35:00,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513661072] [2022-07-13 01:35:00,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513661072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:35:00,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:35:00,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 01:35:00,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570077816] [2022-07-13 01:35:00,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:35:00,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 01:35:00,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:35:00,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 01:35:00,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:35:00,459 INFO L87 Difference]: Start difference. First operand 5189 states and 7721 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:35:03,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:35:03,564 INFO L93 Difference]: Finished difference Result 5188 states and 7717 transitions. [2022-07-13 01:35:03,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 01:35:03,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-13 01:35:03,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:35:03,570 INFO L225 Difference]: With dead ends: 5188 [2022-07-13 01:35:03,570 INFO L226 Difference]: Without dead ends: 5188 [2022-07-13 01:35:03,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-13 01:35:03,570 INFO L413 NwaCegarLoop]: 1924 mSDtfsCounter, 4 mSDsluCounter, 3185 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5109 SdHoareTripleChecker+Invalid, 2593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-13 01:35:03,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5109 Invalid, 2593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-13 01:35:03,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5188 states. [2022-07-13 01:35:03,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5188 to 5188. [2022-07-13 01:35:03,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5188 states, 4402 states have (on average 1.7321671967287597) internal successors, (7625), 5142 states have internal predecessors, (7625), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2022-07-13 01:35:03,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5188 states to 5188 states and 7717 transitions. [2022-07-13 01:35:03,615 INFO L78 Accepts]: Start accepts. Automaton has 5188 states and 7717 transitions. Word has length 67 [2022-07-13 01:35:03,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:35:03,615 INFO L495 AbstractCegarLoop]: Abstraction has 5188 states and 7717 transitions. [2022-07-13 01:35:03,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:35:03,615 INFO L276 IsEmpty]: Start isEmpty. Operand 5188 states and 7717 transitions. [2022-07-13 01:35:03,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 01:35:03,616 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:35:03,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:35:03,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-07-13 01:35:03,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:35:03,816 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr397REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:35:03,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:35:03,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564533, now seen corresponding path program 1 times [2022-07-13 01:35:03,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:35:03,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371118894] [2022-07-13 01:35:03,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:35:03,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:35:03,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:35:03,819 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:35:03,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-07-13 01:35:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:35:04,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 01:35:04,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:35:04,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-13 01:35:04,107 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 01:35:04,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 01:35:04,142 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 9 [2022-07-13 01:35:04,144 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 01:35:04,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:35:04,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:35:04,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:35:04,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371118894] [2022-07-13 01:35:04,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371118894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:35:04,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:35:04,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 01:35:04,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289671672] [2022-07-13 01:35:04,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:35:04,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 01:35:04,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:35:04,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 01:35:04,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:35:04,155 INFO L87 Difference]: Start difference. First operand 5188 states and 7717 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:35:08,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:35:08,483 INFO L93 Difference]: Finished difference Result 5187 states and 7713 transitions. [2022-07-13 01:35:08,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 01:35:08,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-13 01:35:08,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:35:08,489 INFO L225 Difference]: With dead ends: 5187 [2022-07-13 01:35:08,489 INFO L226 Difference]: Without dead ends: 5187 [2022-07-13 01:35:08,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-13 01:35:08,490 INFO L413 NwaCegarLoop]: 1924 mSDtfsCounter, 2 mSDsluCounter, 3174 mSDsCounter, 0 mSdLazyCounter, 2601 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5098 SdHoareTripleChecker+Invalid, 2602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-13 01:35:08,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5098 Invalid, 2602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2601 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-13 01:35:08,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5187 states. [2022-07-13 01:35:08,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5187 to 5187. [2022-07-13 01:35:08,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 4398 states have (on average 1.7328331059572533) internal successors, (7621), 5141 states have internal predecessors, (7621), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2022-07-13 01:35:08,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 7713 transitions. [2022-07-13 01:35:08,533 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 7713 transitions. Word has length 67 [2022-07-13 01:35:08,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:35:08,534 INFO L495 AbstractCegarLoop]: Abstraction has 5187 states and 7713 transitions. [2022-07-13 01:35:08,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:35:08,534 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 7713 transitions. [2022-07-13 01:35:08,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-13 01:35:08,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:35:08,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:35:08,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-07-13 01:35:08,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:35:08,743 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:35:08,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:35:08,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1448028751, now seen corresponding path program 1 times [2022-07-13 01:35:08,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:35:08,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138219157] [2022-07-13 01:35:08,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:35:08,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:35:08,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:35:08,745 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:35:08,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-07-13 01:35:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:35:09,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 01:35:09,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:35:09,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:35:09,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:35:09,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:35:09,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138219157] [2022-07-13 01:35:09,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138219157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:35:09,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:35:09,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 01:35:09,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56296123] [2022-07-13 01:35:09,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:35:09,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:35:09,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:35:09,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:35:09,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:35:09,064 INFO L87 Difference]: Start difference. First operand 5187 states and 7713 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2022-07-13 01:35:09,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:35:09,124 INFO L93 Difference]: Finished difference Result 5190 states and 7722 transitions. [2022-07-13 01:35:09,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 01:35:09,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 75 [2022-07-13 01:35:09,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:35:09,145 INFO L225 Difference]: With dead ends: 5190 [2022-07-13 01:35:09,146 INFO L226 Difference]: Without dead ends: 5190 [2022-07-13 01:35:09,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:35:09,146 INFO L413 NwaCegarLoop]: 1923 mSDtfsCounter, 2 mSDsluCounter, 3838 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5761 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 01:35:09,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5761 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 01:35:09,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5190 states. [2022-07-13 01:35:09,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5190 to 5190. [2022-07-13 01:35:09,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5190 states, 4400 states have (on average 1.7327272727272727) internal successors, (7624), 5144 states have internal predecessors, (7624), 46 states have call successors, (46), 3 states have call predecessors, (46), 4 states have return successors, (52), 43 states have call predecessors, (52), 46 states have call successors, (52) [2022-07-13 01:35:09,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5190 states to 5190 states and 7722 transitions. [2022-07-13 01:35:09,198 INFO L78 Accepts]: Start accepts. Automaton has 5190 states and 7722 transitions. Word has length 75 [2022-07-13 01:35:09,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:35:09,198 INFO L495 AbstractCegarLoop]: Abstraction has 5190 states and 7722 transitions. [2022-07-13 01:35:09,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2022-07-13 01:35:09,198 INFO L276 IsEmpty]: Start isEmpty. Operand 5190 states and 7722 transitions. [2022-07-13 01:35:09,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-13 01:35:09,199 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:35:09,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:35:09,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-07-13 01:35:09,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:35:09,409 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:35:09,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:35:09,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1074294312, now seen corresponding path program 1 times [2022-07-13 01:35:09,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:35:09,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438652769] [2022-07-13 01:35:09,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:35:09,410 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:35:09,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:35:09,411 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:35:09,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-07-13 01:35:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:35:09,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 01:35:09,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:35:09,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:35:09,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 01:35:09,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:35:09,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:35:09,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438652769] [2022-07-13 01:35:09,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438652769] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 01:35:09,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 01:35:09,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-13 01:35:09,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287543457] [2022-07-13 01:35:09,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 01:35:09,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 01:35:09,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:35:09,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 01:35:09,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 01:35:09,797 INFO L87 Difference]: Start difference. First operand 5190 states and 7722 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 01:35:09,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:35:09,944 INFO L93 Difference]: Finished difference Result 5202 states and 7744 transitions. [2022-07-13 01:35:09,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 01:35:09,945 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2022-07-13 01:35:09,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:35:09,966 INFO L225 Difference]: With dead ends: 5202 [2022-07-13 01:35:09,966 INFO L226 Difference]: Without dead ends: 5202 [2022-07-13 01:35:09,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-07-13 01:35:09,966 INFO L413 NwaCegarLoop]: 1923 mSDtfsCounter, 16 mSDsluCounter, 5754 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 7677 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 01:35:09,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 7677 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 01:35:09,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5202 states. [2022-07-13 01:35:10,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5202 to 5200. [2022-07-13 01:35:10,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5200 states, 4409 states have (on average 1.732592424586074) internal successors, (7639), 5153 states have internal predecessors, (7639), 46 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (52), 43 states have call predecessors, (52), 46 states have call successors, (52) [2022-07-13 01:35:10,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5200 states to 5200 states and 7737 transitions. [2022-07-13 01:35:10,050 INFO L78 Accepts]: Start accepts. Automaton has 5200 states and 7737 transitions. Word has length 76 [2022-07-13 01:35:10,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:35:10,050 INFO L495 AbstractCegarLoop]: Abstraction has 5200 states and 7737 transitions. [2022-07-13 01:35:10,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 01:35:10,051 INFO L276 IsEmpty]: Start isEmpty. Operand 5200 states and 7737 transitions. [2022-07-13 01:35:10,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 01:35:10,051 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:35:10,051 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:35:10,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-07-13 01:35:10,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:35:10,261 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:35:10,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:35:10,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1670522737, now seen corresponding path program 2 times [2022-07-13 01:35:10,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:35:10,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001496613] [2022-07-13 01:35:10,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 01:35:10,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:35:10,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:35:10,264 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:35:10,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-07-13 01:35:10,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 01:35:10,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 01:35:10,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 01:35:10,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:35:10,836 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:35:10,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 01:35:10,985 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:35:10,985 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:35:10,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001496613] [2022-07-13 01:35:10,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001496613] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 01:35:10,985 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 01:35:10,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-13 01:35:10,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849822852] [2022-07-13 01:35:10,986 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 01:35:10,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 01:35:10,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:35:10,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 01:35:10,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-13 01:35:10,986 INFO L87 Difference]: Start difference. First operand 5200 states and 7737 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 01:35:11,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:35:11,544 INFO L93 Difference]: Finished difference Result 5221 states and 7785 transitions. [2022-07-13 01:35:11,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-13 01:35:11,545 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2022-07-13 01:35:11,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:35:11,553 INFO L225 Difference]: With dead ends: 5221 [2022-07-13 01:35:11,553 INFO L226 Difference]: Without dead ends: 5217 [2022-07-13 01:35:11,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2022-07-13 01:35:11,554 INFO L413 NwaCegarLoop]: 1926 mSDtfsCounter, 64 mSDsluCounter, 9608 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 11534 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 01:35:11,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 11534 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 01:35:11,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5217 states. [2022-07-13 01:35:11,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5217 to 5209. [2022-07-13 01:35:11,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 4418 states have (on average 1.7317790855590764) internal successors, (7651), 5162 states have internal predecessors, (7651), 46 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (52), 43 states have call predecessors, (52), 46 states have call successors, (52) [2022-07-13 01:35:11,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 7749 transitions. [2022-07-13 01:35:11,599 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 7749 transitions. Word has length 79 [2022-07-13 01:35:11,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:35:11,599 INFO L495 AbstractCegarLoop]: Abstraction has 5209 states and 7749 transitions. [2022-07-13 01:35:11,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 01:35:11,600 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 7749 transitions. [2022-07-13 01:35:11,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-13 01:35:11,600 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:35:11,600 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:35:11,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-07-13 01:35:11,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:35:11,811 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:35:11,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:35:11,811 INFO L85 PathProgramCache]: Analyzing trace with hash 873906671, now seen corresponding path program 3 times [2022-07-13 01:35:11,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:35:11,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716425334] [2022-07-13 01:35:11,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 01:35:11,812 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:35:11,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:35:11,813 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:35:11,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-07-13 01:35:12,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-13 01:35:12,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 01:35:12,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-13 01:35:12,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:35:12,676 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:35:12,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 01:35:13,233 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:35:13,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:35:13,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716425334] [2022-07-13 01:35:13,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716425334] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 01:35:13,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 01:35:13,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-07-13 01:35:13,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388710368] [2022-07-13 01:35:13,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 01:35:13,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 01:35:13,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:35:13,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 01:35:13,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-07-13 01:35:13,234 INFO L87 Difference]: Start difference. First operand 5209 states and 7749 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 01:35:15,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:35:15,907 INFO L93 Difference]: Finished difference Result 5251 states and 7886 transitions. [2022-07-13 01:35:15,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-13 01:35:15,908 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 85 [2022-07-13 01:35:15,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:35:15,916 INFO L225 Difference]: With dead ends: 5251 [2022-07-13 01:35:15,917 INFO L226 Difference]: Without dead ends: 5245 [2022-07-13 01:35:15,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2022-07-13 01:35:15,918 INFO L413 NwaCegarLoop]: 1930 mSDtfsCounter, 192 mSDsluCounter, 21173 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 23103 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 01:35:15,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 23103 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 01:35:15,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5245 states. [2022-07-13 01:35:15,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5245 to 5227. [2022-07-13 01:35:15,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5227 states, 4436 states have (on average 1.729936880072137) internal successors, (7674), 5180 states have internal predecessors, (7674), 46 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (52), 43 states have call predecessors, (52), 46 states have call successors, (52) [2022-07-13 01:35:15,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5227 states to 5227 states and 7772 transitions. [2022-07-13 01:35:15,978 INFO L78 Accepts]: Start accepts. Automaton has 5227 states and 7772 transitions. Word has length 85 [2022-07-13 01:35:15,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:35:15,979 INFO L495 AbstractCegarLoop]: Abstraction has 5227 states and 7772 transitions. [2022-07-13 01:35:15,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 01:35:15,979 INFO L276 IsEmpty]: Start isEmpty. Operand 5227 states and 7772 transitions. [2022-07-13 01:35:15,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-13 01:35:15,979 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:35:15,980 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:35:15,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-07-13 01:35:16,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:35:16,192 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:35:16,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:35:16,193 INFO L85 PathProgramCache]: Analyzing trace with hash -575079249, now seen corresponding path program 4 times [2022-07-13 01:35:16,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:35:16,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782021066] [2022-07-13 01:35:16,193 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 01:35:16,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:35:16,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:35:16,194 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:35:16,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-07-13 01:35:16,548 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 01:35:16,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 01:35:16,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-13 01:35:16,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:35:16,859 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:35:16,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 01:35:18,142 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:35:18,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:35:18,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782021066] [2022-07-13 01:35:18,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782021066] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 01:35:18,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 01:35:18,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-07-13 01:35:18,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627862774] [2022-07-13 01:35:18,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 01:35:18,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-13 01:35:18,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:35:18,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-13 01:35:18,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2022-07-13 01:35:18,144 INFO L87 Difference]: Start difference. First operand 5227 states and 7772 transitions. Second operand has 50 states, 50 states have (on average 2.4) internal successors, (120), 50 states have internal predecessors, (120), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 01:35:28,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:35:28,416 INFO L93 Difference]: Finished difference Result 5307 states and 7989 transitions. [2022-07-13 01:35:28,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-07-13 01:35:28,418 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.4) internal successors, (120), 50 states have internal predecessors, (120), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 97 [2022-07-13 01:35:28,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:35:28,425 INFO L225 Difference]: With dead ends: 5307 [2022-07-13 01:35:28,426 INFO L226 Difference]: Without dead ends: 5303 [2022-07-13 01:35:28,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=3791, Invalid=9319, Unknown=0, NotChecked=0, Total=13110 [2022-07-13 01:35:28,429 INFO L413 NwaCegarLoop]: 1943 mSDtfsCounter, 376 mSDsluCounter, 46494 mSDsCounter, 0 mSdLazyCounter, 3088 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 48437 SdHoareTripleChecker+Invalid, 3504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 3088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 01:35:28,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 48437 Invalid, 3504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 3088 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 01:35:28,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5303 states. [2022-07-13 01:35:28,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5303 to 5261. [2022-07-13 01:35:28,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 4470 states have (on average 1.7270693512304252) internal successors, (7720), 5214 states have internal predecessors, (7720), 46 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (52), 43 states have call predecessors, (52), 46 states have call successors, (52) [2022-07-13 01:35:28,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 7818 transitions. [2022-07-13 01:35:28,481 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 7818 transitions. Word has length 97 [2022-07-13 01:35:28,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:35:28,481 INFO L495 AbstractCegarLoop]: Abstraction has 5261 states and 7818 transitions. [2022-07-13 01:35:28,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.4) internal successors, (120), 50 states have internal predecessors, (120), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 01:35:28,482 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 7818 transitions. [2022-07-13 01:35:28,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-13 01:35:28,482 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:35:28,482 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:35:28,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-07-13 01:35:28,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:35:28,694 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:35:28,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:35:28,695 INFO L85 PathProgramCache]: Analyzing trace with hash -2102212849, now seen corresponding path program 5 times [2022-07-13 01:35:28,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:35:28,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363740939] [2022-07-13 01:35:28,695 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 01:35:28,695 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:35:28,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:35:28,696 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:35:28,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-07-13 01:35:29,954 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-07-13 01:35:29,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 01:35:29,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 60 conjunts are in the unsatisfiable core [2022-07-13 01:35:29,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:35:30,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-13 01:35:30,074 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-13 01:35:30,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 24 [2022-07-13 01:35:30,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2022-07-13 01:35:30,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 10 [2022-07-13 01:35:31,256 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-13 01:35:31,256 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 35 [2022-07-13 01:35:31,277 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 13 [2022-07-13 01:35:31,297 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2022-07-13 01:35:31,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 01:35:31,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:35:31,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363740939] [2022-07-13 01:35:31,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363740939] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 01:35:31,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [14184893] [2022-07-13 01:35:31,514 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 01:35:31,514 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-13 01:35:31,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-13 01:35:31,515 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-13 01:35:31,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2022-07-13 01:36:58,044 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-07-13 01:36:58,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 01:36:58,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 61 conjunts are in the unsatisfiable core [2022-07-13 01:36:58,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:36:58,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-13 01:36:58,351 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-13 01:36:58,352 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 24 [2022-07-13 01:36:58,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2022-07-13 01:36:58,406 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 10 [2022-07-13 01:36:59,411 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-13 01:36:59,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 35 [2022-07-13 01:36:59,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 13 [2022-07-13 01:36:59,436 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2022-07-13 01:36:59,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 01:36:59,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [14184893] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 01:36:59,621 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 01:36:59,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-07-13 01:36:59,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140722897] [2022-07-13 01:36:59,622 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 01:36:59,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 01:36:59,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:36:59,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 01:36:59,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=92, Unknown=11, NotChecked=0, Total=132 [2022-07-13 01:36:59,622 INFO L87 Difference]: Start difference. First operand 5261 states and 7818 transitions. Second operand has 9 states, 7 states have (on average 10.714285714285714) internal successors, (75), 9 states have internal predecessors, (75), 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) [2022-07-13 01:37:03,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:37:03,025 INFO L93 Difference]: Finished difference Result 7816 states and 11874 transitions. [2022-07-13 01:37:03,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 01:37:03,025 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.714285714285714) internal successors, (75), 9 states have internal predecessors, (75), 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 119 [2022-07-13 01:37:03,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:37:03,037 INFO L225 Difference]: With dead ends: 7816 [2022-07-13 01:37:03,037 INFO L226 Difference]: Without dead ends: 7812 [2022-07-13 01:37:03,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 140 SyntacticMatches, 94 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=42, Invalid=127, Unknown=13, NotChecked=0, Total=182 [2022-07-13 01:37:03,038 INFO L413 NwaCegarLoop]: 1183 mSDtfsCounter, 1592 mSDsluCounter, 5197 mSDsCounter, 0 mSdLazyCounter, 2684 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 6380 SdHoareTripleChecker+Invalid, 7187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4491 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-13 01:37:03,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1601 Valid, 6380 Invalid, 7187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2684 Invalid, 0 Unknown, 4491 Unchecked, 3.3s Time] [2022-07-13 01:37:03,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7812 states. [2022-07-13 01:37:03,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7812 to 5309. [2022-07-13 01:37:03,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5309 states, 4518 states have (on average 1.7189021691013724) internal successors, (7766), 5261 states have internal predecessors, (7766), 46 states have call successors, (46), 5 states have call predecessors, (46), 6 states have return successors, (52), 43 states have call predecessors, (52), 46 states have call successors, (52) [2022-07-13 01:37:03,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 7864 transitions. [2022-07-13 01:37:03,091 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 7864 transitions. Word has length 119 [2022-07-13 01:37:03,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:37:03,092 INFO L495 AbstractCegarLoop]: Abstraction has 5309 states and 7864 transitions. [2022-07-13 01:37:03,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.714285714285714) internal successors, (75), 9 states have internal predecessors, (75), 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) [2022-07-13 01:37:03,092 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 7864 transitions. [2022-07-13 01:37:03,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-13 01:37:03,093 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:37:03,093 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:37:03,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2022-07-13 01:37:03,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-07-13 01:37:03,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:37:03,509 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2022-07-13 01:37:03,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:37:03,509 INFO L85 PathProgramCache]: Analyzing trace with hash -2102212848, now seen corresponding path program 1 times [2022-07-13 01:37:03,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:37:03,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550134792] [2022-07-13 01:37:03,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:37:03,510 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:37:03,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:37:03,511 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:37:03,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-07-13 01:37:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:37:04,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 109 conjunts are in the unsatisfiable core [2022-07-13 01:37:04,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:37:04,297 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-13 01:37:04,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-13 01:37:04,370 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 01:37:04,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 [2022-07-13 01:37:04,384 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2022-07-13 01:37:04,390 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 01:37:04,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 10 [2022-07-13 01:37:04,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 9 treesize of output 3 [2022-07-13 01:37:04,500 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3552 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3552))) (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3551 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3551) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-13 01:37:04,507 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3553 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3553))) (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3554 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3554) |c_#memory_$Pointer$.base|))) is different from true [2022-07-13 01:37:04,514 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3555 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3555))) (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3556 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3556) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-13 01:37:04,522 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3558 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3558))) (exists ((v_ArrVal_3557 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3557)))) is different from true [2022-07-13 01:37:04,554 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3562 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3562) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3561 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3561)))) is different from true [2022-07-13 01:37:04,568 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3564 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3564) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3563 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3563) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-13 01:37:04,610 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3570 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3570))) (exists ((v_ArrVal_3569 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3569)))) is different from true [2022-07-13 01:37:04,653 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3575 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3575) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_3576 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3576)))) is different from true [2022-07-13 01:37:04,677 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3579 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3579))) (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3580 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3580) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-13 01:37:04,715 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3583 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3583))) (exists ((v_ArrVal_3584 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3584)))) is different from true [2022-07-13 01:37:04,740 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3588 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3588))) (exists ((v_ArrVal_3587 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3587) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-13 01:37:04,747 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3590 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3590))) (exists ((v_ArrVal_3589 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3589) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29)))) is different from true [2022-07-13 01:37:04,754 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3591 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3591))) (exists ((v_ArrVal_3592 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3592)))) is different from true [2022-07-13 01:37:04,795 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3597 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3597))) (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3598 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3598)))) is different from true [2022-07-13 01:37:04,802 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3599 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3599))) (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3600 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3600) |c_#memory_$Pointer$.base|))) is different from true [2022-07-13 01:37:04,809 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3602 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3602) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_3601 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3601) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29)))) is different from true [2022-07-13 01:37:04,851 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3607 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3607))) (exists ((v_ArrVal_3608 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3608) |c_#memory_$Pointer$.base|))) is different from true [2022-07-13 01:37:04,858 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3609 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3609) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3610 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3610)))) is different from true [2022-07-13 01:37:04,865 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3611 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3611))) (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3612 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3612)))) is different from true [2022-07-13 01:37:04,892 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3615 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3615) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3616 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3616)))) is different from true [2022-07-13 01:37:04,918 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3620 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3620))) (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3619 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3619) |c_#memory_$Pointer$.base|))) is different from true [2022-07-13 01:37:04,926 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3621 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3621))) (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3622 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3622)))) is different from true [2022-07-13 01:37:04,934 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3624 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3624))) (exists ((v_ArrVal_3623 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3623)))) is different from true [2022-07-13 01:37:04,964 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3628 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3628) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3627 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3627)))) is different from true [2022-07-13 01:37:04,990 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3631 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3631) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3632 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3632)))) is different from true [2022-07-13 01:37:05,018 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3636 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3636))) (exists ((v_ArrVal_3635 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3635) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29)))) is different from true [2022-07-13 01:37:05,026 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_29 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_29))) (exists ((v_ArrVal_3637 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3637))) (exists ((v_ArrVal_3638 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3638)))) is different from true [2022-07-13 01:37:05,056 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-13 01:37:05,056 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 46 treesize of output 45 [2022-07-13 01:37:05,060 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 24 [2022-07-13 01:37:05,086 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 13 [2022-07-13 01:37:05,089 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 7 [2022-07-13 01:37:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 136 trivial. 837 not checked. [2022-07-13 01:37:05,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 01:37:05,737 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_3730 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_3730) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_3730 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3729 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_3730) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_3729) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-07-13 01:37:05,744 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:37:05,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550134792] [2022-07-13 01:37:05,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550134792] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 01:37:05,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1230320711] [2022-07-13 01:37:05,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:37:05,745 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-13 01:37:05,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-13 01:37:05,746 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-13 01:37:05,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process