./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/20020406-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/20020406-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1ecdf6fdf9ec72145fabb79894bcc278b3e5646bc4893dbabc4bb180fa53c5ae --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 05:48:29,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 05:48:29,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 05:48:29,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 05:48:29,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 05:48:29,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 05:48:29,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 05:48:29,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 05:48:29,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 05:48:29,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 05:48:29,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 05:48:29,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 05:48:29,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 05:48:29,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 05:48:29,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 05:48:29,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 05:48:29,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 05:48:29,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 05:48:29,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 05:48:29,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 05:48:29,490 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 05:48:29,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 05:48:29,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 05:48:29,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 05:48:29,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 05:48:29,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 05:48:29,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 05:48:29,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 05:48:29,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 05:48:29,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 05:48:29,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 05:48:29,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 05:48:29,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 05:48:29,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 05:48:29,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 05:48:29,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 05:48:29,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 05:48:29,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 05:48:29,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 05:48:29,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 05:48:29,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 05:48:29,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 05:48:29,513 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-23 05:48:29,542 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 05:48:29,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 05:48:29,543 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 05:48:29,543 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 05:48:29,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 05:48:29,544 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 05:48:29,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 05:48:29,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 05:48:29,545 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 05:48:29,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 05:48:29,546 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 05:48:29,546 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 05:48:29,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 05:48:29,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 05:48:29,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 05:48:29,547 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-23 05:48:29,547 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-23 05:48:29,547 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-23 05:48:29,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 05:48:29,547 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 05:48:29,549 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 05:48:29,549 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 05:48:29,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 05:48:29,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 05:48:29,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 05:48:29,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 05:48:29,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 05:48:29,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 05:48:29,551 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 05:48:29,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 05:48:29,552 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ecdf6fdf9ec72145fabb79894bcc278b3e5646bc4893dbabc4bb180fa53c5ae [2022-07-23 05:48:29,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 05:48:29,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 05:48:29,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 05:48:29,813 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 05:48:29,814 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 05:48:29,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/20020406-1.i [2022-07-23 05:48:29,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5542927b7/0972d038b1934c4c9b89a5420114aea5/FLAG130729bd4 [2022-07-23 05:48:30,350 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 05:48:30,351 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/20020406-1.i [2022-07-23 05:48:30,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5542927b7/0972d038b1934c4c9b89a5420114aea5/FLAG130729bd4 [2022-07-23 05:48:30,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5542927b7/0972d038b1934c4c9b89a5420114aea5 [2022-07-23 05:48:30,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 05:48:30,894 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 05:48:30,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 05:48:30,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 05:48:30,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 05:48:30,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:48:30" (1/1) ... [2022-07-23 05:48:30,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24e63cbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:48:30, skipping insertion in model container [2022-07-23 05:48:30,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:48:30" (1/1) ... [2022-07-23 05:48:30,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 05:48:30,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 05:48:31,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:48:31,383 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) [2022-07-23 05:48:31,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@154e7cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:48:31, skipping insertion in model container [2022-07-23 05:48:31,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 05:48:31,385 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-23 05:48:31,388 INFO L158 Benchmark]: Toolchain (without parser) took 492.51ms. Allocated memory is still 88.1MB. Free memory was 48.5MB in the beginning and 34.4MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-23 05:48:31,389 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 88.1MB. Free memory is still 67.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 05:48:31,390 INFO L158 Benchmark]: CACSL2BoogieTranslator took 488.42ms. Allocated memory is still 88.1MB. Free memory was 48.3MB in the beginning and 34.4MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-23 05:48:31,392 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 88.1MB. Free memory is still 67.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 488.42ms. Allocated memory is still 88.1MB. Free memory was 48.3MB in the beginning and 34.4MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 897]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/20020406-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1ecdf6fdf9ec72145fabb79894bcc278b3e5646bc4893dbabc4bb180fa53c5ae --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 05:48:33,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 05:48:33,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 05:48:33,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 05:48:33,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 05:48:33,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 05:48:33,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 05:48:33,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 05:48:33,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 05:48:33,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 05:48:33,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 05:48:33,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 05:48:33,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 05:48:33,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 05:48:33,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 05:48:33,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 05:48:33,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 05:48:33,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 05:48:33,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 05:48:33,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 05:48:33,298 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 05:48:33,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 05:48:33,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 05:48:33,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 05:48:33,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 05:48:33,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 05:48:33,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 05:48:33,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 05:48:33,308 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 05:48:33,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 05:48:33,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 05:48:33,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 05:48:33,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 05:48:33,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 05:48:33,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 05:48:33,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 05:48:33,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 05:48:33,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 05:48:33,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 05:48:33,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 05:48:33,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 05:48:33,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 05:48:33,320 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-23 05:48:33,353 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 05:48:33,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 05:48:33,355 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 05:48:33,355 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 05:48:33,355 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 05:48:33,356 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 05:48:33,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 05:48:33,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 05:48:33,357 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 05:48:33,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 05:48:33,358 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 05:48:33,358 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 05:48:33,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 05:48:33,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 05:48:33,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 05:48:33,359 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-23 05:48:33,359 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-23 05:48:33,359 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-23 05:48:33,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 05:48:33,360 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 05:48:33,360 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-23 05:48:33,360 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-23 05:48:33,360 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 05:48:33,361 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 05:48:33,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 05:48:33,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 05:48:33,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 05:48:33,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 05:48:33,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 05:48:33,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 05:48:33,362 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-23 05:48:33,363 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-23 05:48:33,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-23 05:48:33,363 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ecdf6fdf9ec72145fabb79894bcc278b3e5646bc4893dbabc4bb180fa53c5ae [2022-07-23 05:48:33,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 05:48:33,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 05:48:33,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 05:48:33,731 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 05:48:33,732 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 05:48:33,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/20020406-1.i [2022-07-23 05:48:33,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3f6185e6/e68cdf2129a5448caf9c9bc5568790ba/FLAG668201d8d [2022-07-23 05:48:34,301 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 05:48:34,302 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/20020406-1.i [2022-07-23 05:48:34,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3f6185e6/e68cdf2129a5448caf9c9bc5568790ba/FLAG668201d8d [2022-07-23 05:48:34,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3f6185e6/e68cdf2129a5448caf9c9bc5568790ba [2022-07-23 05:48:34,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 05:48:34,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 05:48:34,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 05:48:34,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 05:48:34,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 05:48:34,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:48:34" (1/1) ... [2022-07-23 05:48:34,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b174307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:48:34, skipping insertion in model container [2022-07-23 05:48:34,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:48:34" (1/1) ... [2022-07-23 05:48:34,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 05:48:34,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 05:48:35,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:48:35,209 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-23 05:48:35,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 05:48:35,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:48:35,286 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 05:48:35,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:48:35,431 INFO L208 MainTranslator]: Completed translation [2022-07-23 05:48:35,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:48:35 WrapperNode [2022-07-23 05:48:35,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 05:48:35,433 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 05:48:35,433 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 05:48:35,433 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 05:48:35,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:48:35" (1/1) ... [2022-07-23 05:48:35,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:48:35" (1/1) ... [2022-07-23 05:48:35,512 INFO L137 Inliner]: procedures = 286, calls = 76, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2022-07-23 05:48:35,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 05:48:35,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 05:48:35,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 05:48:35,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 05:48:35,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:48:35" (1/1) ... [2022-07-23 05:48:35,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:48:35" (1/1) ... [2022-07-23 05:48:35,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:48:35" (1/1) ... [2022-07-23 05:48:35,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:48:35" (1/1) ... [2022-07-23 05:48:35,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:48:35" (1/1) ... [2022-07-23 05:48:35,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:48:35" (1/1) ... [2022-07-23 05:48:35,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:48:35" (1/1) ... [2022-07-23 05:48:35,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 05:48:35,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 05:48:35,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 05:48:35,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 05:48:35,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:48:35" (1/1) ... [2022-07-23 05:48:35,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 05:48:35,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:48:35,620 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) [2022-07-23 05:48:35,627 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 [2022-07-23 05:48:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFdeg [2022-07-23 05:48:35,656 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFdeg [2022-07-23 05:48:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-23 05:48:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-23 05:48:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 05:48:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFnew [2022-07-23 05:48:35,657 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFnew [2022-07-23 05:48:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFfree [2022-07-23 05:48:35,659 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFfree [2022-07-23 05:48:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFshift_add [2022-07-23 05:48:35,659 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFshift_add [2022-07-23 05:48:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 05:48:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-23 05:48:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-23 05:48:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure FFmul [2022-07-23 05:48:35,660 INFO L138 BoogieDeclarations]: Found implementation of procedure FFmul [2022-07-23 05:48:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFexgcd [2022-07-23 05:48:35,661 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFexgcd [2022-07-23 05:48:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 05:48:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 05:48:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 05:48:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFswap [2022-07-23 05:48:35,661 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFswap [2022-07-23 05:48:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFcopy [2022-07-23 05:48:35,662 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFcopy [2022-07-23 05:48:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 05:48:35,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 05:48:35,862 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 05:48:35,864 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 05:48:36,668 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 05:48:36,681 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 05:48:36,681 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-23 05:48:36,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 05:48:36 BoogieIcfgContainer [2022-07-23 05:48:36,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 05:48:36,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 05:48:36,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 05:48:36,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 05:48:36,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 05:48:34" (1/3) ... [2022-07-23 05:48:36,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63579741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 05:48:36, skipping insertion in model container [2022-07-23 05:48:36,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:48:35" (2/3) ... [2022-07-23 05:48:36,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63579741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 05:48:36, skipping insertion in model container [2022-07-23 05:48:36,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 05:48:36" (3/3) ... [2022-07-23 05:48:36,692 INFO L111 eAbstractionObserver]: Analyzing ICFG 20020406-1.i [2022-07-23 05:48:36,705 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 05:48:36,706 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2022-07-23 05:48:36,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 05:48:36,773 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@36f427dd, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@cb590d1 [2022-07-23 05:48:36,773 INFO L358 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2022-07-23 05:48:36,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 187 states, 90 states have (on average 1.7333333333333334) internal successors, (156), 146 states have internal predecessors, (156), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-23 05:48:36,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-23 05:48:36,791 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:48:36,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-23 05:48:36,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:48:36,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:48:36,799 INFO L85 PathProgramCache]: Analyzing trace with hash 228226931, now seen corresponding path program 1 times [2022-07-23 05:48:36,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:48:36,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307826100] [2022-07-23 05:48:36,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:48:36,812 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:48:36,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:48:36,815 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) [2022-07-23 05:48:36,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-23 05:48:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:48:36,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 05:48:36,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:48:36,981 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 [2022-07-23 05:48:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:48:36,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:48:36,993 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:48:36,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307826100] [2022-07-23 05:48:36,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307826100] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:48:36,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:48:36,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 05:48:36,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919497647] [2022-07-23 05:48:36,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:48:37,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:48:37,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:48:37,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:48:37,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:48:37,026 INFO L87 Difference]: Start difference. First operand has 187 states, 90 states have (on average 1.7333333333333334) internal successors, (156), 146 states have internal predecessors, (156), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:48:37,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:48:37,308 INFO L93 Difference]: Finished difference Result 182 states and 218 transitions. [2022-07-23 05:48:37,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:48:37,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-23 05:48:37,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:48:37,318 INFO L225 Difference]: With dead ends: 182 [2022-07-23 05:48:37,318 INFO L226 Difference]: Without dead ends: 180 [2022-07-23 05:48:37,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:48:37,323 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 22 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 05:48:37,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 344 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 05:48:37,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-07-23 05:48:37,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2022-07-23 05:48:37,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 87 states have (on average 1.6781609195402298) internal successors, (146), 139 states have internal predecessors, (146), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-23 05:48:37,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 216 transitions. [2022-07-23 05:48:37,367 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 216 transitions. Word has length 5 [2022-07-23 05:48:37,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:48:37,367 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 216 transitions. [2022-07-23 05:48:37,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:48:37,368 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 216 transitions. [2022-07-23 05:48:37,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-23 05:48:37,368 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:48:37,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-23 05:48:37,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-23 05:48:37,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:48:37,577 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:48:37,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:48:37,578 INFO L85 PathProgramCache]: Analyzing trace with hash 228226932, now seen corresponding path program 1 times [2022-07-23 05:48:37,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:48:37,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614341738] [2022-07-23 05:48:37,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:48:37,579 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:48:37,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:48:37,581 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) [2022-07-23 05:48:37,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-23 05:48:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:48:37,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 05:48:37,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:48:37,684 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 [2022-07-23 05:48:37,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:48:37,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:48:37,694 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:48:37,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614341738] [2022-07-23 05:48:37,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614341738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:48:37,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:48:37,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 05:48:37,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159880867] [2022-07-23 05:48:37,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:48:37,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:48:37,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:48:37,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:48:37,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:48:37,705 INFO L87 Difference]: Start difference. First operand 180 states and 216 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:48:38,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:48:38,076 INFO L93 Difference]: Finished difference Result 184 states and 225 transitions. [2022-07-23 05:48:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:48:38,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-23 05:48:38,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:48:38,080 INFO L225 Difference]: With dead ends: 184 [2022-07-23 05:48:38,080 INFO L226 Difference]: Without dead ends: 184 [2022-07-23 05:48:38,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:48:38,081 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 6 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 05:48:38,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 360 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 05:48:38,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-07-23 05:48:38,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 181. [2022-07-23 05:48:38,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 89 states have (on average 1.651685393258427) internal successors, (147), 140 states have internal predecessors, (147), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-23 05:48:38,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 217 transitions. [2022-07-23 05:48:38,097 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 217 transitions. Word has length 5 [2022-07-23 05:48:38,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:48:38,098 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 217 transitions. [2022-07-23 05:48:38,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:48:38,098 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 217 transitions. [2022-07-23 05:48:38,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-23 05:48:38,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:48:38,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:48:38,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-23 05:48:38,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:48:38,308 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting DUPFFnewErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:48:38,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:48:38,309 INFO L85 PathProgramCache]: Analyzing trace with hash 282747829, now seen corresponding path program 1 times [2022-07-23 05:48:38,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:48:38,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726617320] [2022-07-23 05:48:38,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:48:38,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:48:38,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:48:38,315 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) [2022-07-23 05:48:38,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-23 05:48:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:48:38,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 05:48:38,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:48:38,405 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 [2022-07-23 05:48:38,412 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 [2022-07-23 05:48:38,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:38,460 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 [2022-07-23 05:48:38,473 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 05:48:38,474 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 [2022-07-23 05:48:38,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:48:38,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:48:38,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:48:38,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726617320] [2022-07-23 05:48:38,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726617320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:48:38,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:48:38,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:48:38,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850350933] [2022-07-23 05:48:38,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:48:38,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 05:48:38,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:48:38,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 05:48:38,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 05:48:38,493 INFO L87 Difference]: Start difference. First operand 181 states and 217 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:48:38,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:48:38,763 INFO L93 Difference]: Finished difference Result 177 states and 213 transitions. [2022-07-23 05:48:38,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:48:38,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-23 05:48:38,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:48:38,765 INFO L225 Difference]: With dead ends: 177 [2022-07-23 05:48:38,765 INFO L226 Difference]: Without dead ends: 177 [2022-07-23 05:48:38,766 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 [2022-07-23 05:48:38,766 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 33 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 05:48:38,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 342 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 05:48:38,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-07-23 05:48:38,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2022-07-23 05:48:38,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 87 states have (on average 1.6206896551724137) internal successors, (141), 134 states have internal predecessors, (141), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-23 05:48:38,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 211 transitions. [2022-07-23 05:48:38,790 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 211 transitions. Word has length 7 [2022-07-23 05:48:38,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:48:38,791 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 211 transitions. [2022-07-23 05:48:38,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:48:38,791 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 211 transitions. [2022-07-23 05:48:38,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-23 05:48:38,792 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:48:38,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:48:38,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-23 05:48:38,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:48:39,000 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting DUPFFnewErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:48:39,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:48:39,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1865414411, now seen corresponding path program 1 times [2022-07-23 05:48:39,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:48:39,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108220686] [2022-07-23 05:48:39,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:48:39,001 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:48:39,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:48:39,003 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) [2022-07-23 05:48:39,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-23 05:48:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:48:39,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 05:48:39,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:48:39,096 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 [2022-07-23 05:48:39,109 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 [2022-07-23 05:48:39,128 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 [2022-07-23 05:48:39,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:48:39,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:48:39,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:48:39,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108220686] [2022-07-23 05:48:39,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108220686] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:48:39,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:48:39,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 05:48:39,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463138671] [2022-07-23 05:48:39,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:48:39,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 05:48:39,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:48:39,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 05:48:39,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 05:48:39,148 INFO L87 Difference]: Start difference. First operand 175 states and 211 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:48:39,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:48:39,794 INFO L93 Difference]: Finished difference Result 186 states and 233 transitions. [2022-07-23 05:48:39,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 05:48:39,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-23 05:48:39,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:48:39,796 INFO L225 Difference]: With dead ends: 186 [2022-07-23 05:48:39,796 INFO L226 Difference]: Without dead ends: 186 [2022-07-23 05:48:39,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-23 05:48:39,797 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 28 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-23 05:48:39,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 811 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-23 05:48:39,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-07-23 05:48:39,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 174. [2022-07-23 05:48:39,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 87 states have (on average 1.6091954022988506) internal successors, (140), 133 states have internal predecessors, (140), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-23 05:48:39,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 210 transitions. [2022-07-23 05:48:39,808 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 210 transitions. Word has length 11 [2022-07-23 05:48:39,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:48:39,809 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 210 transitions. [2022-07-23 05:48:39,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:48:39,809 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 210 transitions. [2022-07-23 05:48:39,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-23 05:48:39,810 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:48:39,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:48:39,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-23 05:48:40,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:48:40,020 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting DUPFFnewErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:48:40,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:48:40,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1993271845, now seen corresponding path program 1 times [2022-07-23 05:48:40,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:48:40,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433995916] [2022-07-23 05:48:40,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:48:40,021 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:48:40,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:48:40,023 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) [2022-07-23 05:48:40,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-23 05:48:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:48:40,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-23 05:48:40,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:48:40,144 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 10 treesize of output 9 [2022-07-23 05:48:40,191 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 [2022-07-23 05:48:40,204 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 [2022-07-23 05:48:40,254 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 25 treesize of output 13 [2022-07-23 05:48:40,260 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 [2022-07-23 05:48:40,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:48:40,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:48:40,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:48:40,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433995916] [2022-07-23 05:48:40,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433995916] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:48:40,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:48:40,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 05:48:40,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724730835] [2022-07-23 05:48:40,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:48:40,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 05:48:40,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:48:40,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 05:48:40,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-23 05:48:40,321 INFO L87 Difference]: Start difference. First operand 174 states and 210 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:48:41,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:48:41,182 INFO L93 Difference]: Finished difference Result 197 states and 234 transitions. [2022-07-23 05:48:41,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-23 05:48:41,183 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-07-23 05:48:41,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:48:41,184 INFO L225 Difference]: With dead ends: 197 [2022-07-23 05:48:41,184 INFO L226 Difference]: Without dead ends: 197 [2022-07-23 05:48:41,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2022-07-23 05:48:41,185 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 50 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-23 05:48:41,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 1053 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-23 05:48:41,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-07-23 05:48:41,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 190. [2022-07-23 05:48:41,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 102 states have (on average 1.5294117647058822) internal successors, (156), 148 states have internal predecessors, (156), 35 states have call successors, (35), 9 states have call predecessors, (35), 9 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-23 05:48:41,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 226 transitions. [2022-07-23 05:48:41,194 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 226 transitions. Word has length 12 [2022-07-23 05:48:41,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:48:41,194 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 226 transitions. [2022-07-23 05:48:41,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:48:41,195 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 226 transitions. [2022-07-23 05:48:41,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-23 05:48:41,195 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:48:41,195 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] [2022-07-23 05:48:41,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-07-23 05:48:41,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:48:41,406 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:48:41,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:48:41,407 INFO L85 PathProgramCache]: Analyzing trace with hash 335042805, now seen corresponding path program 1 times [2022-07-23 05:48:41,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:48:41,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633897127] [2022-07-23 05:48:41,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:48:41,408 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:48:41,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:48:41,409 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) [2022-07-23 05:48:41,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-23 05:48:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:48:41,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 05:48:41,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:48:41,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:48:41,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:48:41,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:48:41,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633897127] [2022-07-23 05:48:41,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633897127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:48:41,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:48:41,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 05:48:41,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959006844] [2022-07-23 05:48:41,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:48:41,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 05:48:41,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:48:41,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 05:48:41,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-23 05:48:41,601 INFO L87 Difference]: Start difference. First operand 190 states and 226 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-07-23 05:48:41,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:48:41,791 INFO L93 Difference]: Finished difference Result 209 states and 253 transitions. [2022-07-23 05:48:41,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 05:48:41,792 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 21 [2022-07-23 05:48:41,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:48:41,793 INFO L225 Difference]: With dead ends: 209 [2022-07-23 05:48:41,793 INFO L226 Difference]: Without dead ends: 203 [2022-07-23 05:48:41,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-23 05:48:41,794 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 43 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:48:41,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 757 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:48:41,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-23 05:48:41,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 198. [2022-07-23 05:48:41,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 109 states have (on average 1.5045871559633028) internal successors, (164), 156 states have internal predecessors, (164), 35 states have call successors, (35), 9 states have call predecessors, (35), 10 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2022-07-23 05:48:41,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 238 transitions. [2022-07-23 05:48:41,804 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 238 transitions. Word has length 21 [2022-07-23 05:48:41,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:48:41,804 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 238 transitions. [2022-07-23 05:48:41,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-07-23 05:48:41,804 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 238 transitions. [2022-07-23 05:48:41,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-23 05:48:41,805 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:48:41,805 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] [2022-07-23 05:48:41,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-07-23 05:48:42,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:48:42,015 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:48:42,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:48:42,016 INFO L85 PathProgramCache]: Analyzing trace with hash 370721495, now seen corresponding path program 1 times [2022-07-23 05:48:42,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:48:42,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457971797] [2022-07-23 05:48:42,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:48:42,016 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:48:42,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:48:42,017 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) [2022-07-23 05:48:42,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-23 05:48:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:48:42,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 05:48:42,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:48:42,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:48:42,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:48:42,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:48:42,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:48:42,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457971797] [2022-07-23 05:48:42,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457971797] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:48:42,447 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:48:42,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-23 05:48:42,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265948344] [2022-07-23 05:48:42,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:48:42,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-23 05:48:42,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:48:42,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-23 05:48:42,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-07-23 05:48:42,448 INFO L87 Difference]: Start difference. First operand 198 states and 238 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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) [2022-07-23 05:48:43,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:48:43,051 INFO L93 Difference]: Finished difference Result 246 states and 304 transitions. [2022-07-23 05:48:43,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-23 05:48:43,052 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 22 [2022-07-23 05:48:43,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:48:43,053 INFO L225 Difference]: With dead ends: 246 [2022-07-23 05:48:43,054 INFO L226 Difference]: Without dead ends: 234 [2022-07-23 05:48:43,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=177, Invalid=329, Unknown=0, NotChecked=0, Total=506 [2022-07-23 05:48:43,054 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 153 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 05:48:43,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1351 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 05:48:43,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-23 05:48:43,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 216. [2022-07-23 05:48:43,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 127 states have (on average 1.4960629921259843) internal successors, (190), 173 states have internal predecessors, (190), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2022-07-23 05:48:43,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 264 transitions. [2022-07-23 05:48:43,064 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 264 transitions. Word has length 22 [2022-07-23 05:48:43,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:48:43,064 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 264 transitions. [2022-07-23 05:48:43,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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) [2022-07-23 05:48:43,065 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 264 transitions. [2022-07-23 05:48:43,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-23 05:48:43,065 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:48:43,065 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] [2022-07-23 05:48:43,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-23 05:48:43,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:48:43,276 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:48:43,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:48:43,276 INFO L85 PathProgramCache]: Analyzing trace with hash -843792011, now seen corresponding path program 2 times [2022-07-23 05:48:43,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:48:43,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170793778] [2022-07-23 05:48:43,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 05:48:43,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:48:43,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:48:43,278 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) [2022-07-23 05:48:43,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-23 05:48:43,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 05:48:43,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 05:48:43,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 05:48:43,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:48:43,419 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-23 05:48:43,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:48:43,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:48:43,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170793778] [2022-07-23 05:48:43,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170793778] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:48:43,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:48:43,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 05:48:43,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939195115] [2022-07-23 05:48:43,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:48:43,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 05:48:43,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:48:43,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 05:48:43,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 05:48:43,421 INFO L87 Difference]: Start difference. First operand 216 states and 264 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2022-07-23 05:48:43,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:48:43,808 INFO L93 Difference]: Finished difference Result 214 states and 262 transitions. [2022-07-23 05:48:43,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 05:48:43,808 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 25 [2022-07-23 05:48:43,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:48:43,810 INFO L225 Difference]: With dead ends: 214 [2022-07-23 05:48:43,810 INFO L226 Difference]: Without dead ends: 214 [2022-07-23 05:48:43,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 05:48:43,811 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 23 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 05:48:43,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 756 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 05:48:43,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-07-23 05:48:43,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2022-07-23 05:48:43,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 127 states have (on average 1.4803149606299213) internal successors, (188), 171 states have internal predecessors, (188), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2022-07-23 05:48:43,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 262 transitions. [2022-07-23 05:48:43,819 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 262 transitions. Word has length 25 [2022-07-23 05:48:43,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:48:43,819 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 262 transitions. [2022-07-23 05:48:43,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2022-07-23 05:48:43,820 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 262 transitions. [2022-07-23 05:48:43,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-23 05:48:43,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:48:43,820 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] [2022-07-23 05:48:43,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-23 05:48:44,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:48:44,035 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:48:44,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:48:44,035 INFO L85 PathProgramCache]: Analyzing trace with hash -843792010, now seen corresponding path program 1 times [2022-07-23 05:48:44,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:48:44,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938983535] [2022-07-23 05:48:44,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:48:44,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:48:44,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:48:44,037 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) [2022-07-23 05:48:44,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-23 05:48:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:48:44,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 05:48:44,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:48:44,342 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:48:44,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:48:44,690 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:48:44,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:48:44,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938983535] [2022-07-23 05:48:44,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938983535] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:48:44,691 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:48:44,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-07-23 05:48:44,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751965677] [2022-07-23 05:48:44,691 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:48:44,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-23 05:48:44,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:48:44,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-23 05:48:44,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-07-23 05:48:44,692 INFO L87 Difference]: Start difference. First operand 214 states and 262 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 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) [2022-07-23 05:48:45,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:48:45,906 INFO L93 Difference]: Finished difference Result 285 states and 358 transitions. [2022-07-23 05:48:45,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-23 05:48:45,909 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 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 25 [2022-07-23 05:48:45,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:48:45,911 INFO L225 Difference]: With dead ends: 285 [2022-07-23 05:48:45,911 INFO L226 Difference]: Without dead ends: 267 [2022-07-23 05:48:45,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=437, Invalid=1045, Unknown=0, NotChecked=0, Total=1482 [2022-07-23 05:48:45,912 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 231 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-23 05:48:45,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 1817 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-23 05:48:45,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-07-23 05:48:45,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 222. [2022-07-23 05:48:45,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 134 states have (on average 1.4402985074626866) internal successors, (193), 179 states have internal predecessors, (193), 35 states have call successors, (35), 10 states have call predecessors, (35), 11 states have return successors, (40), 35 states have call predecessors, (40), 35 states have call successors, (40) [2022-07-23 05:48:45,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 268 transitions. [2022-07-23 05:48:45,924 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 268 transitions. Word has length 25 [2022-07-23 05:48:45,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:48:45,924 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 268 transitions. [2022-07-23 05:48:45,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 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) [2022-07-23 05:48:45,924 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 268 transitions. [2022-07-23 05:48:45,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-23 05:48:45,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:48:45,925 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:48:45,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-23 05:48:46,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:48:46,136 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:48:46,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:48:46,136 INFO L85 PathProgramCache]: Analyzing trace with hash 168356342, now seen corresponding path program 2 times [2022-07-23 05:48:46,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:48:46,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593291399] [2022-07-23 05:48:46,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 05:48:46,137 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:48:46,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:48:46,140 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) [2022-07-23 05:48:46,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-23 05:48:46,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 05:48:46,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 05:48:46,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 05:48:46,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:48:46,423 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-23 05:48:46,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:48:46,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:48:46,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593291399] [2022-07-23 05:48:46,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593291399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:48:46,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:48:46,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 05:48:46,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106622014] [2022-07-23 05:48:46,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:48:46,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 05:48:46,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:48:46,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 05:48:46,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-23 05:48:46,424 INFO L87 Difference]: Start difference. First operand 222 states and 268 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2022-07-23 05:48:46,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:48:46,880 INFO L93 Difference]: Finished difference Result 220 states and 266 transitions. [2022-07-23 05:48:46,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 05:48:46,881 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 29 [2022-07-23 05:48:46,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:48:46,882 INFO L225 Difference]: With dead ends: 220 [2022-07-23 05:48:46,882 INFO L226 Difference]: Without dead ends: 220 [2022-07-23 05:48:46,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-23 05:48:46,883 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 26 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 05:48:46,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 809 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 05:48:46,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-07-23 05:48:46,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2022-07-23 05:48:46,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 134 states have (on average 1.4253731343283582) internal successors, (191), 177 states have internal predecessors, (191), 35 states have call successors, (35), 10 states have call predecessors, (35), 11 states have return successors, (40), 35 states have call predecessors, (40), 35 states have call successors, (40) [2022-07-23 05:48:46,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 266 transitions. [2022-07-23 05:48:46,892 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 266 transitions. Word has length 29 [2022-07-23 05:48:46,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:48:46,894 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 266 transitions. [2022-07-23 05:48:46,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2022-07-23 05:48:46,895 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 266 transitions. [2022-07-23 05:48:46,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-23 05:48:46,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:48:46,897 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:48:46,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-23 05:48:47,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:48:47,107 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:48:47,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:48:47,108 INFO L85 PathProgramCache]: Analyzing trace with hash 924079462, now seen corresponding path program 1 times [2022-07-23 05:48:47,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:48:47,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437962517] [2022-07-23 05:48:47,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:48:47,109 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:48:47,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:48:47,112 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) [2022-07-23 05:48:47,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-23 05:48:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:48:47,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-23 05:48:47,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:48:47,383 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 [2022-07-23 05:48:47,420 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-23 05:48:47,421 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 [2022-07-23 05:48:47,447 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 [2022-07-23 05:48:47,584 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:48:47,584 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:48:47,610 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:48:47,610 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:48:47,636 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:48:47,636 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:48:47,662 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:48:47,663 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:48:47,689 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:48:47,690 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:48:47,721 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:48:47,721 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:48:47,749 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:48:47,749 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:48:47,777 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:48:47,777 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 [2022-07-23 05:48:47,879 INFO L356 Elim1Store]: treesize reduction 296, result has 10.6 percent of original size [2022-07-23 05:48:47,879 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 53 [2022-07-23 05:48:47,984 INFO L356 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2022-07-23 05:48:47,985 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 55 [2022-07-23 05:48:48,072 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 [2022-07-23 05:48:48,110 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-23 05:48:48,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:48:49,517 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_552 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_DUPFFnew_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_552) |c_DUPFFnew_~ans~0#1.base|) (bvadd (_ bv8 32) |c_DUPFFnew_~ans~0#1.offset|))) (_ bv1 1))) is different from false [2022-07-23 05:48:49,624 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_552 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_DUPFFnew_~ans~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_DUPFFnew_~ans~0#1.base|) .cse0) v_ArrVal_552) |c_DUPFFnew_~ans~0#1.base|) .cse0))) (_ bv1 1))) is different from false [2022-07-23 05:48:49,636 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:48:49,636 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-07-23 05:48:49,640 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 40 treesize of output 28 [2022-07-23 05:48:49,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-23 05:48:53,798 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 8 not checked. [2022-07-23 05:48:53,798 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:48:53,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437962517] [2022-07-23 05:48:53,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437962517] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:48:53,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:48:53,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2022-07-23 05:48:53,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602300236] [2022-07-23 05:48:53,799 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:48:53,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-23 05:48:53,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:48:53,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-23 05:48:53,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=287, Unknown=4, NotChecked=70, Total=420 [2022-07-23 05:48:53,800 INFO L87 Difference]: Start difference. First operand 220 states and 266 transitions. Second operand has 21 states, 20 states have (on average 2.1) internal successors, (42), 19 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 05:48:55,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:48:55,035 INFO L93 Difference]: Finished difference Result 219 states and 265 transitions. [2022-07-23 05:48:55,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-23 05:48:55,036 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 19 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2022-07-23 05:48:55,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:48:55,037 INFO L225 Difference]: With dead ends: 219 [2022-07-23 05:48:55,038 INFO L226 Difference]: Without dead ends: 219 [2022-07-23 05:48:55,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=91, Invalid=419, Unknown=4, NotChecked=86, Total=600 [2022-07-23 05:48:55,038 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 30 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2138 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 394 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:48:55,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 2138 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 495 Invalid, 0 Unknown, 394 Unchecked, 1.0s Time] [2022-07-23 05:48:55,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-07-23 05:48:55,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2022-07-23 05:48:55,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 134 states have (on average 1.4179104477611941) internal successors, (190), 176 states have internal predecessors, (190), 35 states have call successors, (35), 10 states have call predecessors, (35), 11 states have return successors, (40), 35 states have call predecessors, (40), 35 states have call successors, (40) [2022-07-23 05:48:55,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 265 transitions. [2022-07-23 05:48:55,047 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 265 transitions. Word has length 30 [2022-07-23 05:48:55,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:48:55,047 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 265 transitions. [2022-07-23 05:48:55,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 19 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 05:48:55,048 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 265 transitions. [2022-07-23 05:48:55,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-23 05:48:55,048 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:48:55,048 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:48:55,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-23 05:48:55,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:48:55,266 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:48:55,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:48:55,266 INFO L85 PathProgramCache]: Analyzing trace with hash 924079463, now seen corresponding path program 1 times [2022-07-23 05:48:55,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:48:55,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976310907] [2022-07-23 05:48:55,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:48:55,267 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:48:55,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:48:55,268 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) [2022-07-23 05:48:55,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-23 05:48:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:48:55,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-23 05:48:55,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:48:55,538 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 [2022-07-23 05:48:55,564 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 05:48:55,564 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 [2022-07-23 05:48:55,570 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-07-23 05:48:55,603 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 [2022-07-23 05:48:55,613 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 [2022-07-23 05:48:55,797 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-23 05:48:55,798 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-23 05:48:55,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:48:55,829 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:48:55,829 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:48:55,879 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:48:55,879 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:48:55,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:55,897 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 16 treesize of output 18 [2022-07-23 05:48:55,920 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:48:55,920 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:48:55,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:55,939 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 16 treesize of output 18 [2022-07-23 05:48:55,964 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:48:55,965 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:48:55,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:55,983 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 16 treesize of output 18 [2022-07-23 05:48:56,008 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-23 05:48:56,008 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-23 05:48:56,016 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:48:56,036 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:48:56,037 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:48:56,084 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:48:56,084 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:48:56,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:56,104 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 16 treesize of output 18 [2022-07-23 05:48:56,127 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:48:56,128 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:48:56,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:56,148 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 16 treesize of output 18 [2022-07-23 05:48:56,176 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:48:56,176 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 50 treesize of output 49 [2022-07-23 05:48:56,184 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 [2022-07-23 05:48:56,299 INFO L356 Elim1Store]: treesize reduction 296, result has 10.6 percent of original size [2022-07-23 05:48:56,299 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 47 [2022-07-23 05:48:56,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:56,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:56,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:56,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:56,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:56,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:56,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:56,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:56,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:56,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:56,313 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2022-07-23 05:48:56,424 INFO L356 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2022-07-23 05:48:56,425 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 49 [2022-07-23 05:48:56,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:56,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:56,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:56,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:56,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:56,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:56,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:56,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:56,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:56,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:48:56,442 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 59 [2022-07-23 05:48:56,566 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 [2022-07-23 05:48:56,571 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 [2022-07-23 05:48:56,594 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-23 05:48:56,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:49:23,872 WARN L233 SmtUtils]: Spent 27.08s on a formula simplification that was a NOOP. DAG size: 194 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-23 05:49:28,810 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:49:28,810 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2022-07-23 05:49:28,813 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 54 treesize of output 36 [2022-07-23 05:49:28,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-07-23 05:49:28,854 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:49:28,854 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-07-23 05:49:28,868 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:49:28,868 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2022-07-23 05:49:28,873 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:49:28,877 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 33 treesize of output 21 [2022-07-23 05:49:28,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:49:28,883 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 24 treesize of output 12 [2022-07-23 05:49:29,158 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-23 05:49:29,159 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:49:29,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976310907] [2022-07-23 05:49:29,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976310907] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:49:29,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:49:29,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2022-07-23 05:49:29,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232915423] [2022-07-23 05:49:29,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:49:29,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-23 05:49:29,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:49:29,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-23 05:49:29,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=357, Unknown=8, NotChecked=0, Total=420 [2022-07-23 05:49:29,160 INFO L87 Difference]: Start difference. First operand 219 states and 265 transitions. Second operand has 21 states, 20 states have (on average 2.1) internal successors, (42), 19 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 05:49:32,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:49:32,095 INFO L93 Difference]: Finished difference Result 220 states and 267 transitions. [2022-07-23 05:49:32,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-23 05:49:32,097 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 19 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2022-07-23 05:49:32,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:49:32,098 INFO L225 Difference]: With dead ends: 220 [2022-07-23 05:49:32,098 INFO L226 Difference]: Without dead ends: 220 [2022-07-23 05:49:32,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=144, Invalid=840, Unknown=8, NotChecked=0, Total=992 [2022-07-23 05:49:32,099 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 37 mSDsluCounter, 2054 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2237 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:49:32,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 2237 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 688 Invalid, 0 Unknown, 137 Unchecked, 2.1s Time] [2022-07-23 05:49:32,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-07-23 05:49:32,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2022-07-23 05:49:32,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 134 states have (on average 1.4104477611940298) internal successors, (189), 175 states have internal predecessors, (189), 35 states have call successors, (35), 10 states have call predecessors, (35), 11 states have return successors, (40), 35 states have call predecessors, (40), 35 states have call successors, (40) [2022-07-23 05:49:32,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 264 transitions. [2022-07-23 05:49:32,113 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 264 transitions. Word has length 30 [2022-07-23 05:49:32,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:49:32,113 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 264 transitions. [2022-07-23 05:49:32,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 19 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 05:49:32,114 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 264 transitions. [2022-07-23 05:49:32,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-23 05:49:32,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:49:32,117 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:49:32,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-23 05:49:32,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:49:32,318 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting DUPFFnewErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:49:32,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:49:32,318 INFO L85 PathProgramCache]: Analyzing trace with hash 2092985884, now seen corresponding path program 1 times [2022-07-23 05:49:32,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:49:32,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972902192] [2022-07-23 05:49:32,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:49:32,319 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:49:32,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:49:32,320 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) [2022-07-23 05:49:32,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-23 05:49:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:49:32,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-23 05:49:32,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:49:32,523 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 10 treesize of output 9 [2022-07-23 05:49:32,542 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 [2022-07-23 05:49:32,548 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 [2022-07-23 05:49:32,579 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 25 treesize of output 13 [2022-07-23 05:49:32,585 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 [2022-07-23 05:49:32,624 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-23 05:49:32,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:49:32,625 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:49:32,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972902192] [2022-07-23 05:49:32,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972902192] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:49:32,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:49:32,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 05:49:32,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783894199] [2022-07-23 05:49:32,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:49:32,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 05:49:32,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:49:32,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 05:49:32,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-23 05:49:32,626 INFO L87 Difference]: Start difference. First operand 218 states and 264 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:49:33,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:49:33,300 INFO L93 Difference]: Finished difference Result 230 states and 271 transitions. [2022-07-23 05:49:33,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-23 05:49:33,300 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2022-07-23 05:49:33,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:49:33,301 INFO L225 Difference]: With dead ends: 230 [2022-07-23 05:49:33,301 INFO L226 Difference]: Without dead ends: 218 [2022-07-23 05:49:33,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2022-07-23 05:49:33,302 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 51 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 05:49:33,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 902 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 05:49:33,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-07-23 05:49:33,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 213. [2022-07-23 05:49:33,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 130 states have (on average 1.376923076923077) internal successors, (179), 170 states have internal predecessors, (179), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-23 05:49:33,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 249 transitions. [2022-07-23 05:49:33,324 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 249 transitions. Word has length 42 [2022-07-23 05:49:33,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:49:33,325 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 249 transitions. [2022-07-23 05:49:33,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:49:33,325 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 249 transitions. [2022-07-23 05:49:33,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-23 05:49:33,328 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:49:33,328 INFO L195 NwaCegarLoop]: trace histogram [13, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:49:33,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-23 05:49:33,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:49:33,540 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:49:33,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:49:33,541 INFO L85 PathProgramCache]: Analyzing trace with hash -562772518, now seen corresponding path program 1 times [2022-07-23 05:49:33,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:49:33,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412741680] [2022-07-23 05:49:33,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:49:33,541 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:49:33,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:49:33,542 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) [2022-07-23 05:49:33,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-23 05:49:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:49:33,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-23 05:49:33,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:49:34,046 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 68 proven. 15 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-23 05:49:34,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:49:34,414 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 68 proven. 15 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-23 05:49:34,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:49:34,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412741680] [2022-07-23 05:49:34,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1412741680] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:49:34,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:49:34,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-07-23 05:49:34,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374018293] [2022-07-23 05:49:34,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:49:34,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-23 05:49:34,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:49:34,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-23 05:49:34,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2022-07-23 05:49:34,416 INFO L87 Difference]: Start difference. First operand 213 states and 249 transitions. Second operand has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-23 05:49:36,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:49:36,187 INFO L93 Difference]: Finished difference Result 291 states and 368 transitions. [2022-07-23 05:49:36,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-23 05:49:36,188 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 56 [2022-07-23 05:49:36,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:49:36,190 INFO L225 Difference]: With dead ends: 291 [2022-07-23 05:49:36,190 INFO L226 Difference]: Without dead ends: 279 [2022-07-23 05:49:36,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=641, Invalid=1521, Unknown=0, NotChecked=0, Total=2162 [2022-07-23 05:49:36,191 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 232 mSDsluCounter, 2142 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 2355 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:49:36,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 2355 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-23 05:49:36,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-07-23 05:49:36,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 220. [2022-07-23 05:49:36,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 137 states have (on average 1.3576642335766422) internal successors, (186), 177 states have internal predecessors, (186), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-23 05:49:36,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 256 transitions. [2022-07-23 05:49:36,209 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 256 transitions. Word has length 56 [2022-07-23 05:49:36,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:49:36,209 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 256 transitions. [2022-07-23 05:49:36,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-23 05:49:36,210 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 256 transitions. [2022-07-23 05:49:36,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-23 05:49:36,210 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:49:36,210 INFO L195 NwaCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:49:36,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-07-23 05:49:36,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:49:36,420 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:49:36,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:49:36,420 INFO L85 PathProgramCache]: Analyzing trace with hash -2097093162, now seen corresponding path program 2 times [2022-07-23 05:49:36,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:49:36,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117103838] [2022-07-23 05:49:36,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 05:49:36,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:49:36,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:49:36,422 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) [2022-07-23 05:49:36,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-23 05:49:36,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 05:49:36,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 05:49:36,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 05:49:36,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:49:36,601 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2022-07-23 05:49:36,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:49:36,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:49:36,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117103838] [2022-07-23 05:49:36,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117103838] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:49:36,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:49:36,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 05:49:36,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283871530] [2022-07-23 05:49:36,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:49:36,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 05:49:36,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:49:36,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 05:49:36,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 05:49:36,604 INFO L87 Difference]: Start difference. First operand 220 states and 256 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 05:49:37,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:49:37,067 INFO L93 Difference]: Finished difference Result 218 states and 254 transitions. [2022-07-23 05:49:37,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 05:49:37,068 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2022-07-23 05:49:37,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:49:37,069 INFO L225 Difference]: With dead ends: 218 [2022-07-23 05:49:37,069 INFO L226 Difference]: Without dead ends: 218 [2022-07-23 05:49:37,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 05:49:37,070 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 22 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 05:49:37,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 738 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 05:49:37,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-07-23 05:49:37,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2022-07-23 05:49:37,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 137 states have (on average 1.3430656934306568) internal successors, (184), 175 states have internal predecessors, (184), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-23 05:49:37,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 254 transitions. [2022-07-23 05:49:37,076 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 254 transitions. Word has length 63 [2022-07-23 05:49:37,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:49:37,076 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 254 transitions. [2022-07-23 05:49:37,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 05:49:37,076 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 254 transitions. [2022-07-23 05:49:37,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-23 05:49:37,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:49:37,077 INFO L195 NwaCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:49:37,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-23 05:49:37,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:49:37,287 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:49:37,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:49:37,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2097093161, now seen corresponding path program 1 times [2022-07-23 05:49:37,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:49:37,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007955482] [2022-07-23 05:49:37,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:49:37,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:49:37,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:49:37,290 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) [2022-07-23 05:49:37,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-23 05:49:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:49:37,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 05:49:37,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:49:37,747 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-23 05:49:37,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:49:37,747 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:49:37,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007955482] [2022-07-23 05:49:37,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007955482] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:49:37,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:49:37,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 05:49:37,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916930297] [2022-07-23 05:49:37,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:49:37,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 05:49:37,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:49:37,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 05:49:37,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-23 05:49:37,749 INFO L87 Difference]: Start difference. First operand 218 states and 254 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 05:49:38,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:49:38,254 INFO L93 Difference]: Finished difference Result 216 states and 252 transitions. [2022-07-23 05:49:38,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 05:49:38,254 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2022-07-23 05:49:38,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:49:38,255 INFO L225 Difference]: With dead ends: 216 [2022-07-23 05:49:38,256 INFO L226 Difference]: Without dead ends: 216 [2022-07-23 05:49:38,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-23 05:49:38,256 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 21 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 05:49:38,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 922 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 05:49:38,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-23 05:49:38,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-07-23 05:49:38,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 137 states have (on average 1.3284671532846715) internal successors, (182), 173 states have internal predecessors, (182), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-23 05:49:38,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 252 transitions. [2022-07-23 05:49:38,262 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 252 transitions. Word has length 63 [2022-07-23 05:49:38,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:49:38,262 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 252 transitions. [2022-07-23 05:49:38,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 05:49:38,262 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 252 transitions. [2022-07-23 05:49:38,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-23 05:49:38,263 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:49:38,263 INFO L195 NwaCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:49:38,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-23 05:49:38,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:49:38,464 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:49:38,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:49:38,465 INFO L85 PathProgramCache]: Analyzing trace with hash -585378383, now seen corresponding path program 1 times [2022-07-23 05:49:38,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:49:38,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430523265] [2022-07-23 05:49:38,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:49:38,465 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:49:38,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:49:38,467 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) [2022-07-23 05:49:38,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-23 05:49:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:49:39,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-23 05:49:39,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:49:39,210 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 [2022-07-23 05:49:39,233 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-23 05:49:39,234 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 [2022-07-23 05:49:39,256 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 [2022-07-23 05:49:39,361 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:39,361 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:49:39,381 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:39,381 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:49:39,404 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:39,405 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:49:39,429 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:39,429 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:49:39,451 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:39,452 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:49:39,482 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:39,483 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:49:39,500 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:39,500 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:49:39,521 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:39,521 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:49:39,548 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:39,548 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:49:39,573 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:39,574 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:49:39,596 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:39,597 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:49:39,615 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:39,616 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 [2022-07-23 05:49:39,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:39,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:39,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:39,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:39,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:39,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:39,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:39,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:39,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:39,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:39,652 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 53 [2022-07-23 05:49:39,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:39,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:39,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:39,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:39,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:39,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:39,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:39,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:39,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:39,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:39,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 55 [2022-07-23 05:49:39,760 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 25 treesize of output 13 [2022-07-23 05:49:39,786 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 131 proven. 12 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-23 05:49:39,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:49:41,693 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1933 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_DUPFFnew_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_1933) |c_DUPFFnew_~ans~0#1.base|) (bvadd (_ bv8 32) |c_DUPFFnew_~ans~0#1.offset|))) (_ bv1 1))) is different from false [2022-07-23 05:49:41,742 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1933 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_DUPFFnew_#t~mem34#1.base| v_ArrVal_1933) |c_DUPFFnew_~ans~0#1.base|) (bvadd (_ bv8 32) |c_DUPFFnew_~ans~0#1.offset|))) (_ bv1 1))) is different from false [2022-07-23 05:49:41,749 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1933 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_DUPFFnew_~ans~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_DUPFFnew_~ans~0#1.base|) .cse0) v_ArrVal_1933) |c_DUPFFnew_~ans~0#1.base|) .cse0))))) is different from false [2022-07-23 05:49:41,757 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:49:41,758 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-07-23 05:49:41,759 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 40 treesize of output 28 [2022-07-23 05:49:41,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-23 05:49:43,841 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 12 not checked. [2022-07-23 05:49:43,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:49:43,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1430523265] [2022-07-23 05:49:43,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1430523265] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:49:43,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:49:43,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2022-07-23 05:49:43,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803206724] [2022-07-23 05:49:43,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:49:43,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-23 05:49:43,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:49:43,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-23 05:49:43,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=257, Unknown=3, NotChecked=102, Total=420 [2022-07-23 05:49:43,844 INFO L87 Difference]: Start difference. First operand 216 states and 252 transitions. Second operand has 21 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-23 05:49:44,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:49:44,899 INFO L93 Difference]: Finished difference Result 220 states and 259 transitions. [2022-07-23 05:49:44,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-23 05:49:44,907 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 64 [2022-07-23 05:49:44,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:49:44,909 INFO L225 Difference]: With dead ends: 220 [2022-07-23 05:49:44,909 INFO L226 Difference]: Without dead ends: 220 [2022-07-23 05:49:44,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 107 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=88, Invalid=383, Unknown=3, NotChecked=126, Total=600 [2022-07-23 05:49:44,910 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 22 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 375 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-23 05:49:44,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2278 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 543 Invalid, 0 Unknown, 375 Unchecked, 0.9s Time] [2022-07-23 05:49:44,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-07-23 05:49:44,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 215. [2022-07-23 05:49:44,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 137 states have (on average 1.3211678832116789) internal successors, (181), 172 states have internal predecessors, (181), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-23 05:49:44,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 251 transitions. [2022-07-23 05:49:44,915 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 251 transitions. Word has length 64 [2022-07-23 05:49:44,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:49:44,916 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 251 transitions. [2022-07-23 05:49:44,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-23 05:49:44,916 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 251 transitions. [2022-07-23 05:49:44,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-23 05:49:44,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:49:44,917 INFO L195 NwaCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:49:44,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-07-23 05:49:45,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:49:45,136 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:49:45,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:49:45,136 INFO L85 PathProgramCache]: Analyzing trace with hash -585378382, now seen corresponding path program 1 times [2022-07-23 05:49:45,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:49:45,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122450155] [2022-07-23 05:49:45,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:49:45,137 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:49:45,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:49:45,138 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) [2022-07-23 05:49:45,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-23 05:49:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:49:45,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 59 conjunts are in the unsatisfiable core [2022-07-23 05:49:45,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:49:45,760 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 [2022-07-23 05:49:45,778 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 10 treesize of output 9 [2022-07-23 05:49:45,793 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 05:49:45,793 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 [2022-07-23 05:49:45,820 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 [2022-07-23 05:49:45,830 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 [2022-07-23 05:49:45,975 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:45,976 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:49:45,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:45,990 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 16 treesize of output 18 [2022-07-23 05:49:46,007 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-23 05:49:46,007 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-23 05:49:46,011 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:49:46,027 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:46,027 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:49:46,063 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:46,063 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:49:46,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,082 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 16 treesize of output 18 [2022-07-23 05:49:46,100 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-23 05:49:46,101 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-23 05:49:46,106 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:49:46,120 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:46,120 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:49:46,157 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:46,157 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:49:46,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,171 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 16 treesize of output 18 [2022-07-23 05:49:46,189 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-23 05:49:46,190 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-23 05:49:46,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:49:46,210 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:46,210 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:49:46,250 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-23 05:49:46,250 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-23 05:49:46,257 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:49:46,273 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:46,273 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:49:46,312 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:46,312 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:49:46,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,341 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 16 treesize of output 18 [2022-07-23 05:49:46,365 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-23 05:49:46,365 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-23 05:49:46,369 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:49:46,387 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:46,387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:49:46,425 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-23 05:49:46,426 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-23 05:49:46,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:49:46,446 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:46,446 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:49:46,488 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:46,489 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:49:46,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,505 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 16 treesize of output 18 [2022-07-23 05:49:46,525 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:49:46,526 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 50 treesize of output 49 [2022-07-23 05:49:46,536 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 [2022-07-23 05:49:46,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,592 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-07-23 05:49:46,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2022-07-23 05:49:46,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,649 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 49 [2022-07-23 05:49:46,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:49:46,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 59 [2022-07-23 05:49:46,830 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 25 treesize of output 13 [2022-07-23 05:49:46,836 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 15 treesize of output 7 [2022-07-23 05:49:46,866 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 131 proven. 12 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-23 05:49:46,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:50:37,324 WARN L233 SmtUtils]: Spent 50.22s on a formula simplification that was a NOOP. DAG size: 227 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-23 05:50:42,753 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:50:42,754 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2022-07-23 05:50:42,756 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 54 treesize of output 36 [2022-07-23 05:50:42,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-07-23 05:50:42,781 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:50:42,782 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-07-23 05:50:42,793 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:50:42,794 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2022-07-23 05:50:42,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:50:42,800 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 33 treesize of output 21 [2022-07-23 05:50:42,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:50:42,806 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 24 treesize of output 12 [2022-07-23 05:50:43,035 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 131 proven. 12 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-23 05:50:43,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:50:43,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122450155] [2022-07-23 05:50:43,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122450155] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:50:43,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:50:43,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2022-07-23 05:50:43,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480556753] [2022-07-23 05:50:43,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:50:43,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-23 05:50:43,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:50:43,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-23 05:50:43,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=360, Unknown=5, NotChecked=0, Total=420 [2022-07-23 05:50:43,037 INFO L87 Difference]: Start difference. First operand 215 states and 251 transitions. Second operand has 21 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-23 05:50:46,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:50:46,333 INFO L93 Difference]: Finished difference Result 221 states and 261 transitions. [2022-07-23 05:50:46,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-23 05:50:46,334 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 64 [2022-07-23 05:50:46,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:50:46,336 INFO L225 Difference]: With dead ends: 221 [2022-07-23 05:50:46,336 INFO L226 Difference]: Without dead ends: 221 [2022-07-23 05:50:46,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 104 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=157, Invalid=894, Unknown=5, NotChecked=0, Total=1056 [2022-07-23 05:50:46,337 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 43 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:50:46,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1914 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 599 Invalid, 0 Unknown, 261 Unchecked, 2.0s Time] [2022-07-23 05:50:46,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-07-23 05:50:46,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 214. [2022-07-23 05:50:46,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 137 states have (on average 1.313868613138686) internal successors, (180), 171 states have internal predecessors, (180), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-23 05:50:46,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 250 transitions. [2022-07-23 05:50:46,343 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 250 transitions. Word has length 64 [2022-07-23 05:50:46,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:50:46,343 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 250 transitions. [2022-07-23 05:50:46,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-23 05:50:46,344 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 250 transitions. [2022-07-23 05:50:46,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-23 05:50:46,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:50:46,344 INFO L195 NwaCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:50:46,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-23 05:50:46,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:50:46,563 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:50:46,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:50:46,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1825741073, now seen corresponding path program 1 times [2022-07-23 05:50:46,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:50:46,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762274929] [2022-07-23 05:50:46,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:50:46,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:50:46,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:50:46,565 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) [2022-07-23 05:50:46,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-23 05:50:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:50:47,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-23 05:50:47,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:50:47,244 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 [2022-07-23 05:50:47,346 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 [2022-07-23 05:50:47,385 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 25 treesize of output 13 [2022-07-23 05:50:47,587 INFO L356 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2022-07-23 05:50:47,587 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 4 case distinctions, treesize of input 20 treesize of output 36 [2022-07-23 05:50:47,730 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 128 proven. 4 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-23 05:50:47,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:50:48,208 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 128 proven. 4 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-23 05:50:48,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:50:48,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762274929] [2022-07-23 05:50:48,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762274929] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:50:48,208 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:50:48,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 16 [2022-07-23 05:50:48,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454987062] [2022-07-23 05:50:48,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:50:48,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-23 05:50:48,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:50:48,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-23 05:50:48,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-07-23 05:50:48,210 INFO L87 Difference]: Start difference. First operand 214 states and 250 transitions. Second operand has 17 states, 15 states have (on average 4.2) internal successors, (63), 13 states have internal predecessors, (63), 3 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 05:50:50,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:50:50,030 INFO L93 Difference]: Finished difference Result 253 states and 304 transitions. [2022-07-23 05:50:50,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-23 05:50:50,030 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.2) internal successors, (63), 13 states have internal predecessors, (63), 3 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 71 [2022-07-23 05:50:50,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:50:50,032 INFO L225 Difference]: With dead ends: 253 [2022-07-23 05:50:50,032 INFO L226 Difference]: Without dead ends: 253 [2022-07-23 05:50:50,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 124 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2022-07-23 05:50:50,033 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 88 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 235 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:50:50,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 1153 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 787 Invalid, 0 Unknown, 235 Unchecked, 1.0s Time] [2022-07-23 05:50:50,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-07-23 05:50:50,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 236. [2022-07-23 05:50:50,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 152 states have (on average 1.3289473684210527) internal successors, (202), 187 states have internal predecessors, (202), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (41), 39 states have call predecessors, (41), 39 states have call successors, (41) [2022-07-23 05:50:50,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 282 transitions. [2022-07-23 05:50:50,039 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 282 transitions. Word has length 71 [2022-07-23 05:50:50,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:50:50,039 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 282 transitions. [2022-07-23 05:50:50,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.2) internal successors, (63), 13 states have internal predecessors, (63), 3 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 05:50:50,040 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 282 transitions. [2022-07-23 05:50:50,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-23 05:50:50,040 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:50:50,040 INFO L195 NwaCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:50:50,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-23 05:50:50,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:50:50,257 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:50:50,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:50:50,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1825741072, now seen corresponding path program 1 times [2022-07-23 05:50:50,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:50:50,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951712487] [2022-07-23 05:50:50,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:50:50,258 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:50:50,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:50:50,260 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) [2022-07-23 05:50:50,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-23 05:50:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:50:51,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-23 05:50:51,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:50:51,418 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 [2022-07-23 05:50:51,500 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 29 treesize of output 17 [2022-07-23 05:50:51,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:50:51,927 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-07-23 05:50:51,927 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-07-23 05:50:51,943 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 05:50:51,943 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 [2022-07-23 05:50:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 1 proven. 131 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-23 05:50:52,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:50:55,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:50:55,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951712487] [2022-07-23 05:50:55,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951712487] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 05:50:55,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1025609033] [2022-07-23 05:50:55,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:50:55,087 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-23 05:50:55,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-23 05:50:55,089 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-23 05:50:55,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-07-23 05:50:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:50:56,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 41 conjunts are in the unsatisfiable core [2022-07-23 05:50:56,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:50:56,819 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 [2022-07-23 05:50:56,823 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 [2022-07-23 05:50:56,901 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-23 05:50:56,901 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-07-23 05:50:56,917 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 05:50:56,917 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 [2022-07-23 05:50:57,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:50:57,601 INFO L356 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-07-23 05:50:57,601 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 2 case distinctions, treesize of input 15 treesize of output 23 [2022-07-23 05:50:57,612 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 05:50:57,612 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 [2022-07-23 05:50:57,939 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 1 proven. 131 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-23 05:50:57,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:50:58,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1025609033] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 05:50:58,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:50:58,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 29 [2022-07-23 05:50:58,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817266383] [2022-07-23 05:50:58,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:50:58,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-23 05:50:58,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:50:58,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-23 05:50:58,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2022-07-23 05:50:58,369 INFO L87 Difference]: Start difference. First operand 236 states and 282 transitions. Second operand has 30 states, 27 states have (on average 2.962962962962963) internal successors, (80), 23 states have internal predecessors, (80), 7 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-23 05:51:00,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:51:00,722 INFO L93 Difference]: Finished difference Result 249 states and 298 transitions. [2022-07-23 05:51:00,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-23 05:51:00,723 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 2.962962962962963) internal successors, (80), 23 states have internal predecessors, (80), 7 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 71 [2022-07-23 05:51:00,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:51:00,725 INFO L225 Difference]: With dead ends: 249 [2022-07-23 05:51:00,725 INFO L226 Difference]: Without dead ends: 249 [2022-07-23 05:51:00,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 128 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=193, Invalid=1969, Unknown=0, NotChecked=0, Total=2162 [2022-07-23 05:51:00,726 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 72 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1027 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-23 05:51:00,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1647 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 951 Invalid, 0 Unknown, 1027 Unchecked, 1.6s Time] [2022-07-23 05:51:00,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-07-23 05:51:00,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 241. [2022-07-23 05:51:00,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 156 states have (on average 1.3205128205128205) internal successors, (206), 191 states have internal predecessors, (206), 39 states have call successors, (39), 13 states have call predecessors, (39), 14 states have return successors, (41), 39 states have call predecessors, (41), 39 states have call successors, (41) [2022-07-23 05:51:00,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 286 transitions. [2022-07-23 05:51:00,733 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 286 transitions. Word has length 71 [2022-07-23 05:51:00,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:51:00,734 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 286 transitions. [2022-07-23 05:51:00,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 2.962962962962963) internal successors, (80), 23 states have internal predecessors, (80), 7 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-23 05:51:00,734 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 286 transitions. [2022-07-23 05:51:00,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-23 05:51:00,735 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:51:00,735 INFO L195 NwaCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:51:00,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-07-23 05:51:00,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-23 05:51:01,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:51:01,147 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:51:01,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:51:01,148 INFO L85 PathProgramCache]: Analyzing trace with hash -242190254, now seen corresponding path program 1 times [2022-07-23 05:51:01,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:51:01,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139659198] [2022-07-23 05:51:01,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:51:01,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:51:01,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:51:01,150 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) [2022-07-23 05:51:01,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-23 05:51:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:51:01,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 05:51:01,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:51:01,811 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-07-23 05:51:01,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:51:01,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:51:01,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139659198] [2022-07-23 05:51:01,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139659198] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:51:01,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:51:01,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-23 05:51:01,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470133944] [2022-07-23 05:51:01,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:51:01,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-23 05:51:01,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:51:01,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-23 05:51:01,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-23 05:51:01,812 INFO L87 Difference]: Start difference. First operand 241 states and 286 transitions. Second operand has 11 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 05:51:02,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:51:02,003 INFO L93 Difference]: Finished difference Result 247 states and 291 transitions. [2022-07-23 05:51:02,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-23 05:51:02,004 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2022-07-23 05:51:02,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:51:02,006 INFO L225 Difference]: With dead ends: 247 [2022-07-23 05:51:02,006 INFO L226 Difference]: Without dead ends: 247 [2022-07-23 05:51:02,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-07-23 05:51:02,006 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 14 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 05:51:02,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 362 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 59 Unchecked, 0.2s Time] [2022-07-23 05:51:02,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-07-23 05:51:02,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 246. [2022-07-23 05:51:02,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 160 states have (on average 1.31875) internal successors, (211), 195 states have internal predecessors, (211), 39 states have call successors, (39), 14 states have call predecessors, (39), 15 states have return successors, (41), 39 states have call predecessors, (41), 39 states have call successors, (41) [2022-07-23 05:51:02,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 291 transitions. [2022-07-23 05:51:02,013 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 291 transitions. Word has length 77 [2022-07-23 05:51:02,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:51:02,013 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 291 transitions. [2022-07-23 05:51:02,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 05:51:02,013 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 291 transitions. [2022-07-23 05:51:02,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-23 05:51:02,014 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:51:02,014 INFO L195 NwaCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:51:02,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-23 05:51:02,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:51:02,227 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:51:02,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:51:02,228 INFO L85 PathProgramCache]: Analyzing trace with hash -242190253, now seen corresponding path program 1 times [2022-07-23 05:51:02,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:51:02,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546734895] [2022-07-23 05:51:02,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:51:02,228 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:51:02,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:51:02,230 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) [2022-07-23 05:51:02,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-23 05:51:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:51:02,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-23 05:51:02,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:51:03,131 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-23 05:51:03,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:51:03,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:51:03,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546734895] [2022-07-23 05:51:03,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546734895] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:51:03,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:51:03,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-23 05:51:03,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121997791] [2022-07-23 05:51:03,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:51:03,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-23 05:51:03,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:51:03,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-23 05:51:03,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-23 05:51:03,134 INFO L87 Difference]: Start difference. First operand 246 states and 291 transitions. Second operand has 12 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 05:51:03,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:51:03,700 INFO L93 Difference]: Finished difference Result 246 states and 290 transitions. [2022-07-23 05:51:03,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-23 05:51:03,701 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2022-07-23 05:51:03,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:51:03,702 INFO L225 Difference]: With dead ends: 246 [2022-07-23 05:51:03,703 INFO L226 Difference]: Without dead ends: 246 [2022-07-23 05:51:03,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-07-23 05:51:03,704 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 31 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 05:51:03,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 699 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 49 Unchecked, 0.5s Time] [2022-07-23 05:51:03,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-07-23 05:51:03,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2022-07-23 05:51:03,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 160 states have (on average 1.3125) internal successors, (210), 195 states have internal predecessors, (210), 39 states have call successors, (39), 14 states have call predecessors, (39), 15 states have return successors, (41), 39 states have call predecessors, (41), 39 states have call successors, (41) [2022-07-23 05:51:03,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 290 transitions. [2022-07-23 05:51:03,710 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 290 transitions. Word has length 77 [2022-07-23 05:51:03,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:51:03,711 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 290 transitions. [2022-07-23 05:51:03,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 05:51:03,711 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 290 transitions. [2022-07-23 05:51:03,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-23 05:51:03,712 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:51:03,712 INFO L195 NwaCegarLoop]: trace histogram [20, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:51:03,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-23 05:51:03,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:51:03,934 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:51:03,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:51:03,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1668104532, now seen corresponding path program 1 times [2022-07-23 05:51:03,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:51:03,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153879909] [2022-07-23 05:51:03,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:51:03,935 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:51:03,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:51:03,936 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) [2022-07-23 05:51:03,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-23 05:51:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:51:04,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-23 05:51:04,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:51:04,833 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 4 proven. 136 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-23 05:51:04,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:51:05,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-07-23 05:51:05,237 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:51:05,237 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 16 treesize of output 20 [2022-07-23 05:51:05,697 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 3 proven. 136 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-23 05:51:05,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:51:05,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153879909] [2022-07-23 05:51:05,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153879909] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:51:05,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:51:05,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2022-07-23 05:51:05,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357973703] [2022-07-23 05:51:05,698 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:51:05,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-23 05:51:05,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:51:05,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-23 05:51:05,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-07-23 05:51:05,699 INFO L87 Difference]: Start difference. First operand 246 states and 290 transitions. Second operand has 25 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 19 states have internal predecessors, (94), 7 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-23 05:51:08,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:51:08,446 INFO L93 Difference]: Finished difference Result 345 states and 417 transitions. [2022-07-23 05:51:08,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-23 05:51:08,448 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 19 states have internal predecessors, (94), 7 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) Word has length 84 [2022-07-23 05:51:08,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:51:08,449 INFO L225 Difference]: With dead ends: 345 [2022-07-23 05:51:08,449 INFO L226 Difference]: Without dead ends: 345 [2022-07-23 05:51:08,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=128, Invalid=864, Unknown=0, NotChecked=0, Total=992 [2022-07-23 05:51:08,450 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 319 mSDsluCounter, 2297 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 2489 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-23 05:51:08,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 2489 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 989 Invalid, 0 Unknown, 141 Unchecked, 2.3s Time] [2022-07-23 05:51:08,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-07-23 05:51:08,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 313. [2022-07-23 05:51:08,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 199 states have (on average 1.3969849246231156) internal successors, (278), 235 states have internal predecessors, (278), 67 states have call successors, (67), 16 states have call predecessors, (67), 15 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-07-23 05:51:08,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 412 transitions. [2022-07-23 05:51:08,459 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 412 transitions. Word has length 84 [2022-07-23 05:51:08,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:51:08,460 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 412 transitions. [2022-07-23 05:51:08,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 19 states have internal predecessors, (94), 7 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-23 05:51:08,460 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 412 transitions. [2022-07-23 05:51:08,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-23 05:51:08,461 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:51:08,461 INFO L195 NwaCegarLoop]: trace histogram [20, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:51:08,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-07-23 05:51:08,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:51:08,675 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:51:08,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:51:08,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1112953710, now seen corresponding path program 1 times [2022-07-23 05:51:08,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:51:08,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269367138] [2022-07-23 05:51:08,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:51:08,676 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:51:08,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:51:08,678 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) [2022-07-23 05:51:08,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-23 05:51:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:51:09,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-23 05:51:09,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:51:09,488 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-23 05:51:09,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:51:09,559 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-23 05:51:09,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:51:09,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269367138] [2022-07-23 05:51:09,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269367138] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:51:09,559 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:51:09,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 12 [2022-07-23 05:51:09,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323766615] [2022-07-23 05:51:09,559 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:51:09,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-23 05:51:09,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:51:09,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-23 05:51:09,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-07-23 05:51:09,560 INFO L87 Difference]: Start difference. First operand 313 states and 412 transitions. Second operand has 13 states, 11 states have (on average 4.0) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-23 05:51:10,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:51:10,235 INFO L93 Difference]: Finished difference Result 325 states and 425 transitions. [2022-07-23 05:51:10,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-23 05:51:10,235 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.0) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 86 [2022-07-23 05:51:10,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:51:10,237 INFO L225 Difference]: With dead ends: 325 [2022-07-23 05:51:10,237 INFO L226 Difference]: Without dead ends: 325 [2022-07-23 05:51:10,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 157 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-07-23 05:51:10,238 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 44 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-23 05:51:10,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 805 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 420 Invalid, 0 Unknown, 59 Unchecked, 0.6s Time] [2022-07-23 05:51:10,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-07-23 05:51:10,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 320. [2022-07-23 05:51:10,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 204 states have (on average 1.392156862745098) internal successors, (284), 240 states have internal predecessors, (284), 68 states have call successors, (68), 18 states have call predecessors, (68), 16 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2022-07-23 05:51:10,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 420 transitions. [2022-07-23 05:51:10,247 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 420 transitions. Word has length 86 [2022-07-23 05:51:10,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:51:10,247 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 420 transitions. [2022-07-23 05:51:10,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.0) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-23 05:51:10,247 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 420 transitions. [2022-07-23 05:51:10,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-23 05:51:10,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:51:10,248 INFO L195 NwaCegarLoop]: trace histogram [20, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:51:10,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-07-23 05:51:10,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:51:10,469 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:51:10,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:51:10,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1112953709, now seen corresponding path program 1 times [2022-07-23 05:51:10,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:51:10,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769060715] [2022-07-23 05:51:10,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:51:10,470 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:51:10,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:51:10,473 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) [2022-07-23 05:51:10,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-23 05:51:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:51:11,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-23 05:51:11,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:51:11,515 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-07-23 05:51:11,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:51:12,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-07-23 05:51:12,628 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-07-23 05:51:12,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:51:12,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769060715] [2022-07-23 05:51:12,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769060715] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:51:12,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:51:12,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2022-07-23 05:51:12,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381846598] [2022-07-23 05:51:12,628 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:51:12,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-23 05:51:12,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:51:12,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-23 05:51:12,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2022-07-23 05:51:12,629 INFO L87 Difference]: Start difference. First operand 320 states and 420 transitions. Second operand has 25 states, 22 states have (on average 3.772727272727273) internal successors, (83), 17 states have internal predecessors, (83), 7 states have call successors, (12), 8 states have call predecessors, (12), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-23 05:51:14,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:51:14,904 INFO L93 Difference]: Finished difference Result 339 states and 441 transitions. [2022-07-23 05:51:14,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-23 05:51:14,904 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 3.772727272727273) internal successors, (83), 17 states have internal predecessors, (83), 7 states have call successors, (12), 8 states have call predecessors, (12), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 86 [2022-07-23 05:51:14,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:51:14,906 INFO L225 Difference]: With dead ends: 339 [2022-07-23 05:51:14,906 INFO L226 Difference]: Without dead ends: 339 [2022-07-23 05:51:14,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 145 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2022-07-23 05:51:14,907 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 88 mSDsluCounter, 2115 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2302 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:51:14,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 2302 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 894 Invalid, 0 Unknown, 61 Unchecked, 2.1s Time] [2022-07-23 05:51:14,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-07-23 05:51:14,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 333. [2022-07-23 05:51:14,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 214 states have (on average 1.397196261682243) internal successors, (299), 251 states have internal predecessors, (299), 70 states have call successors, (70), 19 states have call predecessors, (70), 17 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2022-07-23 05:51:14,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 439 transitions. [2022-07-23 05:51:14,915 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 439 transitions. Word has length 86 [2022-07-23 05:51:14,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:51:14,916 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 439 transitions. [2022-07-23 05:51:14,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 3.772727272727273) internal successors, (83), 17 states have internal predecessors, (83), 7 states have call successors, (12), 8 states have call predecessors, (12), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-23 05:51:14,916 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 439 transitions. [2022-07-23 05:51:14,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-23 05:51:14,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:51:14,917 INFO L195 NwaCegarLoop]: trace histogram [20, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:51:14,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-07-23 05:51:15,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:51:15,132 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:51:15,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:51:15,132 INFO L85 PathProgramCache]: Analyzing trace with hash 194820021, now seen corresponding path program 2 times [2022-07-23 05:51:15,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:51:15,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284571915] [2022-07-23 05:51:15,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 05:51:15,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:51:15,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:51:15,134 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) [2022-07-23 05:51:15,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-07-23 05:51:15,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 05:51:15,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 05:51:15,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-23 05:51:15,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:51:15,845 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2022-07-23 05:51:15,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:51:15,884 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-07-23 05:51:15,885 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 11 [2022-07-23 05:51:15,892 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-07-23 05:51:15,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:51:15,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284571915] [2022-07-23 05:51:15,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284571915] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:51:15,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:51:15,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2022-07-23 05:51:15,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349503940] [2022-07-23 05:51:15,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:51:15,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 05:51:15,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:51:15,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 05:51:15,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-23 05:51:15,895 INFO L87 Difference]: Start difference. First operand 333 states and 439 transitions. Second operand has 9 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-23 05:51:16,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:51:16,035 INFO L93 Difference]: Finished difference Result 339 states and 446 transitions. [2022-07-23 05:51:16,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 05:51:16,035 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 92 [2022-07-23 05:51:16,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:51:16,037 INFO L225 Difference]: With dead ends: 339 [2022-07-23 05:51:16,037 INFO L226 Difference]: Without dead ends: 339 [2022-07-23 05:51:16,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 174 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-07-23 05:51:16,038 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 19 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:51:16,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 503 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 71 Unchecked, 0.1s Time] [2022-07-23 05:51:16,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-07-23 05:51:16,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 335. [2022-07-23 05:51:16,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 216 states have (on average 1.3981481481481481) internal successors, (302), 252 states have internal predecessors, (302), 70 states have call successors, (70), 20 states have call predecessors, (70), 17 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2022-07-23 05:51:16,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 442 transitions. [2022-07-23 05:51:16,046 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 442 transitions. Word has length 92 [2022-07-23 05:51:16,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:51:16,046 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 442 transitions. [2022-07-23 05:51:16,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-23 05:51:16,046 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 442 transitions. [2022-07-23 05:51:16,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-23 05:51:16,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:51:16,047 INFO L195 NwaCegarLoop]: trace histogram [20, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:51:16,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-07-23 05:51:16,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:51:16,248 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:51:16,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:51:16,248 INFO L85 PathProgramCache]: Analyzing trace with hash 194820022, now seen corresponding path program 2 times [2022-07-23 05:51:16,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:51:16,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286763281] [2022-07-23 05:51:16,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 05:51:16,249 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:51:16,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:51:16,250 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) [2022-07-23 05:51:16,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-07-23 05:51:16,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 05:51:16,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 05:51:16,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-23 05:51:16,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:51:17,246 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 7 proven. 143 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-07-23 05:51:17,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:51:17,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-07-23 05:51:17,770 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:51:17,770 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 16 treesize of output 20 [2022-07-23 05:51:18,238 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 5 proven. 143 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-23 05:51:18,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:51:18,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286763281] [2022-07-23 05:51:18,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286763281] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:51:18,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:51:18,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2022-07-23 05:51:18,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866483366] [2022-07-23 05:51:18,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:51:18,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-23 05:51:18,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:51:18,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-23 05:51:18,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2022-07-23 05:51:18,240 INFO L87 Difference]: Start difference. First operand 335 states and 442 transitions. Second operand has 29 states, 24 states have (on average 4.0) internal successors, (96), 21 states have internal predecessors, (96), 9 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) [2022-07-23 05:51:25,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:51:25,131 INFO L93 Difference]: Finished difference Result 501 states and 654 transitions. [2022-07-23 05:51:25,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-23 05:51:25,132 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 4.0) internal successors, (96), 21 states have internal predecessors, (96), 9 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) Word has length 92 [2022-07-23 05:51:25,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:51:25,134 INFO L225 Difference]: With dead ends: 501 [2022-07-23 05:51:25,134 INFO L226 Difference]: Without dead ends: 501 [2022-07-23 05:51:25,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 153 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=189, Invalid=1617, Unknown=0, NotChecked=0, Total=1806 [2022-07-23 05:51:25,135 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 256 mSDsluCounter, 4268 mSDsCounter, 0 mSdLazyCounter, 2059 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 4607 SdHoareTripleChecker+Invalid, 2366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 178 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-23 05:51:25,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 4607 Invalid, 2366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2059 Invalid, 0 Unknown, 178 Unchecked, 5.7s Time] [2022-07-23 05:51:25,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-07-23 05:51:25,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 442. [2022-07-23 05:51:25,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 281 states have (on average 1.4626334519572954) internal successors, (411), 321 states have internal predecessors, (411), 108 states have call successors, (108), 24 states have call predecessors, (108), 21 states have return successors, (109), 105 states have call predecessors, (109), 108 states have call successors, (109) [2022-07-23 05:51:25,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 628 transitions. [2022-07-23 05:51:25,147 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 628 transitions. Word has length 92 [2022-07-23 05:51:25,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:51:25,147 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 628 transitions. [2022-07-23 05:51:25,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 4.0) internal successors, (96), 21 states have internal predecessors, (96), 9 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) [2022-07-23 05:51:25,147 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 628 transitions. [2022-07-23 05:51:25,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-23 05:51:25,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:51:25,148 INFO L195 NwaCegarLoop]: trace histogram [20, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:51:25,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-07-23 05:51:25,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:51:25,362 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting DUPFFexgcdErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:51:25,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:51:25,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1693134889, now seen corresponding path program 1 times [2022-07-23 05:51:25,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:51:25,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578343980] [2022-07-23 05:51:25,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:51:25,363 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:51:25,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:51:25,364 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) [2022-07-23 05:51:25,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-07-23 05:51:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:51:25,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 05:51:25,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:51:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-07-23 05:51:25,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:51:25,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:51:25,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578343980] [2022-07-23 05:51:25,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1578343980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:51:25,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:51:25,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:51:25,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842775340] [2022-07-23 05:51:25,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:51:25,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:51:25,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:51:25,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:51:25,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:51:25,960 INFO L87 Difference]: Start difference. First operand 442 states and 628 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 05:51:25,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:51:25,968 INFO L93 Difference]: Finished difference Result 430 states and 597 transitions. [2022-07-23 05:51:25,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:51:25,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 91 [2022-07-23 05:51:25,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:51:25,970 INFO L225 Difference]: With dead ends: 430 [2022-07-23 05:51:25,970 INFO L226 Difference]: Without dead ends: 426 [2022-07-23 05:51:25,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:51:25,971 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 0 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:51:25,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 391 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 05:51:25,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-07-23 05:51:25,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2022-07-23 05:51:25,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 269 states have (on average 1.4275092936802973) internal successors, (384), 307 states have internal predecessors, (384), 104 states have call successors, (104), 24 states have call predecessors, (104), 21 states have return successors, (105), 103 states have call predecessors, (105), 104 states have call successors, (105) [2022-07-23 05:51:25,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 593 transitions. [2022-07-23 05:51:25,981 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 593 transitions. Word has length 91 [2022-07-23 05:51:25,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:51:25,982 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 593 transitions. [2022-07-23 05:51:25,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 05:51:25,982 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 593 transitions. [2022-07-23 05:51:25,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-23 05:51:25,983 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:51:25,983 INFO L195 NwaCegarLoop]: trace histogram [20, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:51:26,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-07-23 05:51:26,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:51:26,206 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:51:26,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:51:26,206 INFO L85 PathProgramCache]: Analyzing trace with hash -947339607, now seen corresponding path program 1 times [2022-07-23 05:51:26,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:51:26,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183164703] [2022-07-23 05:51:26,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:51:26,207 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:51:26,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:51:26,208 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) [2022-07-23 05:51:26,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-07-23 05:51:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:51:26,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 05:51:26,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:51:27,012 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-07-23 05:51:27,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:51:27,012 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:51:27,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183164703] [2022-07-23 05:51:27,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183164703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:51:27,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:51:27,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-23 05:51:27,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650334029] [2022-07-23 05:51:27,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:51:27,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-23 05:51:27,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:51:27,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-23 05:51:27,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-23 05:51:27,014 INFO L87 Difference]: Start difference. First operand 426 states and 593 transitions. Second operand has 11 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-23 05:51:27,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:51:27,701 INFO L93 Difference]: Finished difference Result 426 states and 592 transitions. [2022-07-23 05:51:27,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-23 05:51:27,701 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2022-07-23 05:51:27,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:51:27,703 INFO L225 Difference]: With dead ends: 426 [2022-07-23 05:51:27,703 INFO L226 Difference]: Without dead ends: 426 [2022-07-23 05:51:27,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-07-23 05:51:27,704 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 26 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-23 05:51:27,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1362 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 522 Invalid, 0 Unknown, 53 Unchecked, 0.6s Time] [2022-07-23 05:51:27,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-07-23 05:51:27,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2022-07-23 05:51:27,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 269 states have (on average 1.4237918215613383) internal successors, (383), 307 states have internal predecessors, (383), 104 states have call successors, (104), 24 states have call predecessors, (104), 21 states have return successors, (105), 103 states have call predecessors, (105), 104 states have call successors, (105) [2022-07-23 05:51:27,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 592 transitions. [2022-07-23 05:51:27,713 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 592 transitions. Word has length 92 [2022-07-23 05:51:27,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:51:27,714 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 592 transitions. [2022-07-23 05:51:27,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-23 05:51:27,714 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 592 transitions. [2022-07-23 05:51:27,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-23 05:51:27,715 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:51:27,715 INFO L195 NwaCegarLoop]: trace histogram [20, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:51:27,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-07-23 05:51:27,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:51:27,937 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:51:27,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:51:27,937 INFO L85 PathProgramCache]: Analyzing trace with hash -215615000, now seen corresponding path program 1 times [2022-07-23 05:51:27,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:51:27,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665925845] [2022-07-23 05:51:27,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:51:27,938 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:51:27,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:51:27,939 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) [2022-07-23 05:51:27,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-07-23 05:51:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:51:28,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-23 05:51:28,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:51:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-07-23 05:51:28,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:51:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-07-23 05:51:28,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:51:28,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665925845] [2022-07-23 05:51:28,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665925845] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:51:28,848 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:51:28,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 12 [2022-07-23 05:51:28,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842061212] [2022-07-23 05:51:28,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:51:28,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-23 05:51:28,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:51:28,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-23 05:51:28,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-07-23 05:51:28,849 INFO L87 Difference]: Start difference. First operand 426 states and 592 transitions. Second operand has 13 states, 12 states have (on average 3.75) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-23 05:51:29,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:51:29,137 INFO L93 Difference]: Finished difference Result 431 states and 596 transitions. [2022-07-23 05:51:29,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-23 05:51:29,137 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2022-07-23 05:51:29,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:51:29,138 INFO L225 Difference]: With dead ends: 431 [2022-07-23 05:51:29,138 INFO L226 Difference]: Without dead ends: 431 [2022-07-23 05:51:29,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 178 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-07-23 05:51:29,139 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 19 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 05:51:29,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 547 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 163 Invalid, 0 Unknown, 66 Unchecked, 0.2s Time] [2022-07-23 05:51:29,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-07-23 05:51:29,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2022-07-23 05:51:29,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 273 states have (on average 1.4175824175824177) internal successors, (387), 311 states have internal predecessors, (387), 104 states have call successors, (104), 25 states have call predecessors, (104), 22 states have return successors, (105), 103 states have call predecessors, (105), 104 states have call successors, (105) [2022-07-23 05:51:29,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 596 transitions. [2022-07-23 05:51:29,149 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 596 transitions. Word has length 99 [2022-07-23 05:51:29,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:51:29,149 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 596 transitions. [2022-07-23 05:51:29,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-23 05:51:29,150 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 596 transitions. [2022-07-23 05:51:29,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-23 05:51:29,150 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:51:29,151 INFO L195 NwaCegarLoop]: trace histogram [20, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:51:29,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-07-23 05:51:29,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:51:29,363 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:51:29,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:51:29,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1134883697, now seen corresponding path program 3 times [2022-07-23 05:51:29,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:51:29,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155306850] [2022-07-23 05:51:29,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 05:51:29,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:51:29,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:51:29,365 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) [2022-07-23 05:51:29,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-07-23 05:51:30,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-23 05:51:30,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 05:51:30,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-23 05:51:30,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:51:30,296 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-07-23 05:51:30,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:51:30,339 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-07-23 05:51:30,340 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 11 [2022-07-23 05:51:30,356 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-07-23 05:51:30,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:51:30,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155306850] [2022-07-23 05:51:30,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155306850] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:51:30,356 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:51:30,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2022-07-23 05:51:30,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035002682] [2022-07-23 05:51:30,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:51:30,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 05:51:30,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:51:30,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 05:51:30,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-23 05:51:30,358 INFO L87 Difference]: Start difference. First operand 431 states and 596 transitions. Second operand has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 05:51:31,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:51:31,025 INFO L93 Difference]: Finished difference Result 454 states and 617 transitions. [2022-07-23 05:51:31,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 05:51:31,025 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 101 [2022-07-23 05:51:31,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:51:31,026 INFO L225 Difference]: With dead ends: 454 [2022-07-23 05:51:31,026 INFO L226 Difference]: Without dead ends: 454 [2022-07-23 05:51:31,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-07-23 05:51:31,027 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 79 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-23 05:51:31,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 976 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-23 05:51:31,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-07-23 05:51:31,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 433. [2022-07-23 05:51:31,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 274 states have (on average 1.405109489051095) internal successors, (385), 313 states have internal predecessors, (385), 104 states have call successors, (104), 24 states have call predecessors, (104), 24 states have return successors, (108), 104 states have call predecessors, (108), 104 states have call successors, (108) [2022-07-23 05:51:31,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 597 transitions. [2022-07-23 05:51:31,037 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 597 transitions. Word has length 101 [2022-07-23 05:51:31,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:51:31,037 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 597 transitions. [2022-07-23 05:51:31,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 05:51:31,038 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 597 transitions. [2022-07-23 05:51:31,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-23 05:51:31,038 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:51:31,038 INFO L195 NwaCegarLoop]: trace histogram [20, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:51:31,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-07-23 05:51:31,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:51:31,256 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:51:31,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:51:31,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1134883696, now seen corresponding path program 3 times [2022-07-23 05:51:31,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:51:31,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796187787] [2022-07-23 05:51:31,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 05:51:31,257 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:51:31,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:51:31,258 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) [2022-07-23 05:51:31,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-07-23 05:51:32,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-23 05:51:32,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 05:51:32,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-23 05:51:32,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:51:32,508 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 21 proven. 139 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-23 05:51:32,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:51:32,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-07-23 05:51:33,037 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:51:33,037 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 16 treesize of output 20 [2022-07-23 05:51:33,638 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 21 proven. 139 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-23 05:51:33,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:51:33,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796187787] [2022-07-23 05:51:33,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796187787] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:51:33,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:51:33,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2022-07-23 05:51:33,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421272076] [2022-07-23 05:51:33,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:51:33,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-23 05:51:33,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:51:33,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-23 05:51:33,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2022-07-23 05:51:33,640 INFO L87 Difference]: Start difference. First operand 433 states and 597 transitions. Second operand has 32 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 22 states have internal predecessors, (96), 11 states have call successors, (19), 9 states have call predecessors, (19), 5 states have return successors, (12), 10 states have call predecessors, (12), 7 states have call successors, (12) [2022-07-23 05:51:41,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:51:41,114 INFO L93 Difference]: Finished difference Result 667 states and 900 transitions. [2022-07-23 05:51:41,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-23 05:51:41,115 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 22 states have internal predecessors, (96), 11 states have call successors, (19), 9 states have call predecessors, (19), 5 states have return successors, (12), 10 states have call predecessors, (12), 7 states have call successors, (12) Word has length 101 [2022-07-23 05:51:41,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:51:41,117 INFO L225 Difference]: With dead ends: 667 [2022-07-23 05:51:41,117 INFO L226 Difference]: Without dead ends: 667 [2022-07-23 05:51:41,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=283, Invalid=2167, Unknown=0, NotChecked=0, Total=2450 [2022-07-23 05:51:41,118 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 901 mSDsluCounter, 5711 mSDsCounter, 0 mSdLazyCounter, 2765 mSolverCounterSat, 530 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 6126 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 530 IncrementalHoareTripleChecker+Valid, 2765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-07-23 05:51:41,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 6126 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [530 Valid, 2765 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-07-23 05:51:41,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-07-23 05:51:41,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 580. [2022-07-23 05:51:41,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 361 states have (on average 1.4930747922437673) internal successors, (539), 404 states have internal predecessors, (539), 163 states have call successors, (163), 27 states have call predecessors, (163), 25 states have return successors, (163), 163 states have call predecessors, (163), 163 states have call successors, (163) [2022-07-23 05:51:41,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 865 transitions. [2022-07-23 05:51:41,132 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 865 transitions. Word has length 101 [2022-07-23 05:51:41,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:51:41,132 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 865 transitions. [2022-07-23 05:51:41,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 22 states have internal predecessors, (96), 11 states have call successors, (19), 9 states have call predecessors, (19), 5 states have return successors, (12), 10 states have call predecessors, (12), 7 states have call successors, (12) [2022-07-23 05:51:41,133 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 865 transitions. [2022-07-23 05:51:41,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-23 05:51:41,133 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:51:41,134 INFO L195 NwaCegarLoop]: trace histogram [20, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:51:41,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-07-23 05:51:41,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:51:41,347 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting DUPFFexgcdErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:51:41,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:51:41,348 INFO L85 PathProgramCache]: Analyzing trace with hash -485059473, now seen corresponding path program 1 times [2022-07-23 05:51:41,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:51:41,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798010852] [2022-07-23 05:51:41,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:51:41,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:51:41,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:51:41,350 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) [2022-07-23 05:51:41,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-07-23 05:51:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:51:42,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-23 05:51:42,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:51:42,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:42,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:42,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:42,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:42,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:42,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:42,373 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 38 [2022-07-23 05:51:42,678 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-23 05:51:42,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 42 treesize of output 18 [2022-07-23 05:51:42,718 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-23 05:51:42,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:51:42,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:51:42,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798010852] [2022-07-23 05:51:42,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798010852] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:51:42,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:51:42,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-23 05:51:42,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730126424] [2022-07-23 05:51:42,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:51:42,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-23 05:51:42,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:51:42,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-23 05:51:42,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-07-23 05:51:42,720 INFO L87 Difference]: Start difference. First operand 580 states and 865 transitions. Second operand has 15 states, 14 states have (on average 4.214285714285714) internal successors, (59), 12 states have internal predecessors, (59), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-23 05:51:43,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:51:43,022 INFO L93 Difference]: Finished difference Result 512 states and 737 transitions. [2022-07-23 05:51:43,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-23 05:51:43,023 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.214285714285714) internal successors, (59), 12 states have internal predecessors, (59), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 98 [2022-07-23 05:51:43,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:51:43,025 INFO L225 Difference]: With dead ends: 512 [2022-07-23 05:51:43,026 INFO L226 Difference]: Without dead ends: 496 [2022-07-23 05:51:43,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 78 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-07-23 05:51:43,026 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 13 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2047 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 132 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 05:51:43,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2047 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 132 Unchecked, 0.3s Time] [2022-07-23 05:51:43,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-07-23 05:51:43,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 496. [2022-07-23 05:51:43,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 309 states have (on average 1.4660194174757282) internal successors, (453), 349 states have internal predecessors, (453), 134 states have call successors, (134), 24 states have call predecessors, (134), 22 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) [2022-07-23 05:51:43,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 721 transitions. [2022-07-23 05:51:43,037 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 721 transitions. Word has length 98 [2022-07-23 05:51:43,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:51:43,038 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 721 transitions. [2022-07-23 05:51:43,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.214285714285714) internal successors, (59), 12 states have internal predecessors, (59), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-23 05:51:43,038 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 721 transitions. [2022-07-23 05:51:43,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-23 05:51:43,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:51:43,039 INFO L195 NwaCegarLoop]: trace histogram [20, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:51:43,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-07-23 05:51:43,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:51:43,255 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:51:43,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:51:43,256 INFO L85 PathProgramCache]: Analyzing trace with hash 957572595, now seen corresponding path program 4 times [2022-07-23 05:51:43,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:51:43,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936594064] [2022-07-23 05:51:43,256 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-23 05:51:43,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:51:43,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:51:43,257 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:51:43,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-07-23 05:51:43,920 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-23 05:51:43,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 05:51:43,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-23 05:51:43,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:51:44,402 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 141 proven. 8 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-07-23 05:51:44,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:51:45,280 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-07-23 05:51:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 141 proven. 8 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-07-23 05:51:45,396 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:51:45,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936594064] [2022-07-23 05:51:45,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936594064] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:51:45,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:51:45,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2022-07-23 05:51:45,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569468083] [2022-07-23 05:51:45,396 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:51:45,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-23 05:51:45,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:51:45,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-23 05:51:45,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2022-07-23 05:51:45,398 INFO L87 Difference]: Start difference. First operand 496 states and 721 transitions. Second operand has 25 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 17 states have internal predecessors, (85), 7 states have call successors, (18), 8 states have call predecessors, (18), 4 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-23 05:51:47,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:51:47,710 INFO L93 Difference]: Finished difference Result 521 states and 755 transitions. [2022-07-23 05:51:47,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-23 05:51:47,711 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 17 states have internal predecessors, (85), 7 states have call successors, (18), 8 states have call predecessors, (18), 4 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) Word has length 107 [2022-07-23 05:51:47,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:51:47,713 INFO L225 Difference]: With dead ends: 521 [2022-07-23 05:51:47,714 INFO L226 Difference]: Without dead ends: 521 [2022-07-23 05:51:47,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 180 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=118, Invalid=874, Unknown=0, NotChecked=0, Total=992 [2022-07-23 05:51:47,715 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 107 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 2150 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:51:47,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 2150 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 872 Invalid, 0 Unknown, 83 Unchecked, 2.0s Time] [2022-07-23 05:51:47,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-07-23 05:51:47,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 504. [2022-07-23 05:51:47,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 315 states have (on average 1.4476190476190476) internal successors, (456), 356 states have internal predecessors, (456), 134 states have call successors, (134), 25 states have call predecessors, (134), 24 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) [2022-07-23 05:51:47,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 724 transitions. [2022-07-23 05:51:47,726 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 724 transitions. Word has length 107 [2022-07-23 05:51:47,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:51:47,726 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 724 transitions. [2022-07-23 05:51:47,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 17 states have internal predecessors, (85), 7 states have call successors, (18), 8 states have call predecessors, (18), 4 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-23 05:51:47,726 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 724 transitions. [2022-07-23 05:51:47,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-23 05:51:47,727 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:51:47,727 INFO L195 NwaCegarLoop]: trace histogram [20, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:51:47,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-07-23 05:51:47,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:51:47,944 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting DUPFFexgcdErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:51:47,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:51:47,944 INFO L85 PathProgramCache]: Analyzing trace with hash 783105185, now seen corresponding path program 1 times [2022-07-23 05:51:47,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:51:47,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160587193] [2022-07-23 05:51:47,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:51:47,945 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:51:47,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:51:47,946 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) [2022-07-23 05:51:47,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-07-23 05:51:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:51:49,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 56 conjunts are in the unsatisfiable core [2022-07-23 05:51:49,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:51:49,190 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 [2022-07-23 05:51:49,228 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-23 05:51:49,229 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 [2022-07-23 05:51:49,254 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 [2022-07-23 05:51:49,385 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:51:49,385 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:51:49,405 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:51:49,405 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:51:49,424 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:51:49,424 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:51:49,443 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:51:49,443 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:51:49,463 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:51:49,464 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:51:49,483 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:51:49,483 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:51:49,502 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:51:49,502 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:51:49,521 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:51:49,522 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:51:49,541 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:51:49,541 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:51:49,567 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:51:49,567 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:51:49,586 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:51:49,586 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-07-23 05:51:49,603 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:51:49,603 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 [2022-07-23 05:51:49,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,635 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 53 [2022-07-23 05:51:49,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 55 [2022-07-23 05:51:49,784 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:51:49,786 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 30 treesize of output 31 [2022-07-23 05:51:49,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:51:49,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 53 [2022-07-23 05:51:50,449 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 25 treesize of output 13 [2022-07-23 05:51:50,480 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 131 proven. 16 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-07-23 05:51:50,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:51:50,714 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7429 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem68#1.base| v_ArrVal_7429) |c_ULTIMATE.start_main_~g~0#1.base|) (bvadd |c_ULTIMATE.start_main_~g~0#1.offset| (_ bv8 32)))) (_ bv1 1))) is different from false [2022-07-23 05:51:50,721 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7429 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select |c_#valid| (let ((.cse0 (bvadd |c_ULTIMATE.start_main_~g~0#1.offset| (_ bv8 32)))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~g~0#1.base|) .cse0) v_ArrVal_7429) |c_ULTIMATE.start_main_~g~0#1.base|) .cse0))) (_ bv1 1))) is different from false [2022-07-23 05:51:50,727 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7429 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_#t~ret67#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~ret67#1.base|) .cse0) v_ArrVal_7429) |c_ULTIMATE.start_main_#t~ret67#1.base|) .cse0))) (_ bv1 1))) is different from false [2022-07-23 05:51:53,311 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7429 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_DUPFFnew_#res#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_DUPFFnew_#res#1.base|) .cse0) v_ArrVal_7429) |c_DUPFFnew_#res#1.base|) .cse0))) (_ bv1 1))) is different from false [2022-07-23 05:51:53,320 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7429 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_DUPFFnew_~ans~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_DUPFFnew_~ans~0#1.base|) .cse0) v_ArrVal_7429) |c_DUPFFnew_~ans~0#1.base|) .cse0))) (_ bv1 1))) is different from false [2022-07-23 05:51:53,768 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7426 (_ BitVec 32)) (v_ArrVal_7425 (_ BitVec 32)) (v_ArrVal_7418 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7429 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7428 (_ BitVec 32)) (v_ArrVal_7427 (_ BitVec 32))) (= (select |c_#valid| (let ((.cse2 (bvadd (_ bv8 32) |c_DUPFFnew_~ans~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_DUPFFnew_~ans~0#1.base|) .cse2) v_ArrVal_7418))) (let ((.cse1 (select .cse0 |c_DUPFFnew_~ans~0#1.base|))) (store (store .cse0 |c_DUPFFnew_~ans~0#1.base| (store (store (store (store .cse1 (bvadd (_ bv4 32) |c_DUPFFnew_~ans~0#1.offset|) v_ArrVal_7426) (bvadd |c_DUPFFnew_~ans~0#1.offset| (_ bv5 32)) v_ArrVal_7425) (bvadd (_ bv6 32) |c_DUPFFnew_~ans~0#1.offset|) v_ArrVal_7428) (bvadd (_ bv7 32) |c_DUPFFnew_~ans~0#1.offset|) v_ArrVal_7427)) (select .cse1 .cse2) v_ArrVal_7429))) |c_DUPFFnew_~ans~0#1.base|) .cse2))) (_ bv1 1))) is different from false [2022-07-23 05:51:53,789 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:51:53,789 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 65 [2022-07-23 05:51:53,793 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 98 treesize of output 74 [2022-07-23 05:51:53,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2022-07-23 05:51:53,799 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 50 [2022-07-23 05:51:58,353 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 131 proven. 16 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-07-23 05:51:58,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:51:58,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160587193] [2022-07-23 05:51:58,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160587193] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:51:58,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:51:58,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 33 [2022-07-23 05:51:58,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537156655] [2022-07-23 05:51:58,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:51:58,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-23 05:51:58,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:51:58,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-23 05:51:58,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=669, Unknown=10, NotChecked=342, Total=1122 [2022-07-23 05:51:58,355 INFO L87 Difference]: Start difference. First operand 504 states and 724 transitions. Second operand has 34 states, 33 states have (on average 2.878787878787879) internal successors, (95), 28 states have internal predecessors, (95), 7 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-23 05:52:00,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:52:00,414 INFO L93 Difference]: Finished difference Result 528 states and 759 transitions. [2022-07-23 05:52:00,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-23 05:52:00,415 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.878787878787879) internal successors, (95), 28 states have internal predecessors, (95), 7 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) Word has length 114 [2022-07-23 05:52:00,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:52:00,417 INFO L225 Difference]: With dead ends: 528 [2022-07-23 05:52:00,417 INFO L226 Difference]: Without dead ends: 528 [2022-07-23 05:52:00,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 183 SyntacticMatches, 17 SemanticMatches, 39 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=159, Invalid=1045, Unknown=10, NotChecked=426, Total=1640 [2022-07-23 05:52:00,418 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 126 mSDsluCounter, 3048 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 3255 SdHoareTripleChecker+Invalid, 2940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1668 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-23 05:52:00,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 3255 Invalid, 2940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1248 Invalid, 0 Unknown, 1668 Unchecked, 1.7s Time] [2022-07-23 05:52:00,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-07-23 05:52:00,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 514. [2022-07-23 05:52:00,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 323 states have (on average 1.4303405572755419) internal successors, (462), 364 states have internal predecessors, (462), 134 states have call successors, (134), 27 states have call predecessors, (134), 26 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) [2022-07-23 05:52:00,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 730 transitions. [2022-07-23 05:52:00,436 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 730 transitions. Word has length 114 [2022-07-23 05:52:00,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:52:00,436 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 730 transitions. [2022-07-23 05:52:00,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.878787878787879) internal successors, (95), 28 states have internal predecessors, (95), 7 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-23 05:52:00,437 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 730 transitions. [2022-07-23 05:52:00,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-23 05:52:00,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:52:00,438 INFO L195 NwaCegarLoop]: trace histogram [20, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:52:00,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-07-23 05:52:00,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:52:00,660 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting DUPFFexgcdErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-07-23 05:52:00,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:52:00,660 INFO L85 PathProgramCache]: Analyzing trace with hash 783105186, now seen corresponding path program 1 times [2022-07-23 05:52:00,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:52:00,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334719643] [2022-07-23 05:52:00,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:52:00,661 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:52:00,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:52:00,662 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:52:00,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-07-23 05:52:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:52:01,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 86 conjunts are in the unsatisfiable core [2022-07-23 05:52:01,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:52:01,918 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 [2022-07-23 05:52:01,950 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 05:52:01,950 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 [2022-07-23 05:52:01,955 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-07-23 05:52:01,986 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 [2022-07-23 05:52:01,995 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 [2022-07-23 05:52:02,159 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:52:02,160 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:52:02,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,177 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 16 treesize of output 18 [2022-07-23 05:52:02,204 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-23 05:52:02,205 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-23 05:52:02,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:52:02,223 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:52:02,224 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:52:02,267 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:52:02,268 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:52:02,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,281 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 16 treesize of output 18 [2022-07-23 05:52:02,304 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:52:02,305 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:52:02,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,317 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 16 treesize of output 18 [2022-07-23 05:52:02,336 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-23 05:52:02,336 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-23 05:52:02,341 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:52:02,355 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:52:02,355 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:52:02,399 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-23 05:52:02,399 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-23 05:52:02,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:52:02,421 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:52:02,421 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:52:02,464 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-23 05:52:02,464 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-23 05:52:02,470 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:52:02,495 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:52:02,495 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:52:02,530 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:52:02,531 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:52:02,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,543 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 16 treesize of output 18 [2022-07-23 05:52:02,561 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-23 05:52:02,562 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-23 05:52:02,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:52:02,582 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:52:02,582 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:52:02,624 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:52:02,624 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:52:02,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,642 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 16 treesize of output 18 [2022-07-23 05:52:02,665 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:52:02,665 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-07-23 05:52:02,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,682 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 16 treesize of output 18 [2022-07-23 05:52:02,704 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:52:02,705 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 50 treesize of output 49 [2022-07-23 05:52:02,711 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 [2022-07-23 05:52:02,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,768 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2022-07-23 05:52:02,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-07-23 05:52:02,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 59 [2022-07-23 05:52:02,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:02,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 49 [2022-07-23 05:52:03,075 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:52:03,076 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 42 treesize of output 41 [2022-07-23 05:52:03,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:03,083 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 20 treesize of output 22 [2022-07-23 05:52:03,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:03,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:03,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:03,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:03,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:03,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:03,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:03,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:03,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:03,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:03,124 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-07-23 05:52:03,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:03,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:03,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:03,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:03,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:03,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:03,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:03,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:03,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:03,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:52:03,139 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 53 [2022-07-23 05:52:04,059 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 15 treesize of output 7 [2022-07-23 05:52:04,062 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 25 treesize of output 13 [2022-07-23 05:52:04,103 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 131 proven. 16 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-07-23 05:52:04,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:52:04,738 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_7806 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem68#1.base| v_ArrVal_7806) |c_ULTIMATE.start_main_~g~0#1.base|) (bvadd |c_ULTIMATE.start_main_~g~0#1.offset| (_ bv8 32))))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((v_ArrVal_7807 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7806 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd |c_ULTIMATE.start_main_~g~0#1.offset| (_ bv8 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem68#1.base| v_ArrVal_7806) |c_ULTIMATE.start_main_~g~0#1.base|) .cse1) (_ bv4 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem68#1.base| v_ArrVal_7807) |c_ULTIMATE.start_main_~g~0#1.base|) .cse1)))))) is different from false [2022-07-23 05:52:04,763 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_7806 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (bvadd |c_ULTIMATE.start_main_~g~0#1.offset| (_ bv8 32)))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~g~0#1.base|) .cse1) v_ArrVal_7806) |c_ULTIMATE.start_main_~g~0#1.base|) .cse1)))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_7807 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7806 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (bvadd |c_ULTIMATE.start_main_~g~0#1.offset| (_ bv8 32)))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~g~0#1.base|) .cse3))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_7806) |c_ULTIMATE.start_main_~g~0#1.base|) .cse3)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_7807) |c_ULTIMATE.start_main_~g~0#1.base|) .cse3))))))) is different from false [2022-07-23 05:52:04,789 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_7806 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_#t~ret67#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~ret67#1.base|) .cse1) v_ArrVal_7806) |c_ULTIMATE.start_main_#t~ret67#1.base|) .cse1)))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_7807 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7806 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_#t~ret67#1.offset|))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~ret67#1.base|) .cse3))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_7806) |c_ULTIMATE.start_main_#t~ret67#1.base|) .cse3)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_7807) |c_ULTIMATE.start_main_#t~ret67#1.base|) .cse3))))))) is different from false [2022-07-23 05:52:49,454 WARN L233 SmtUtils]: Spent 44.66s on a formula simplification that was a NOOP. DAG size: 227 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)