./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext/tree_dsw.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec 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-ext/tree_dsw.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 0046771f7e99737dcb98805b185666cbe0afcb5f ................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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-ext/tree_dsw.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 0046771f7e99737dcb98805b185666cbe0afcb5f ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 05:34:10,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 05:34:10,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 05:34:11,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 05:34:11,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 05:34:11,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 05:34:11,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 05:34:11,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 05:34:11,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 05:34:11,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 05:34:11,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 05:34:11,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 05:34:11,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 05:34:11,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 05:34:11,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 05:34:11,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 05:34:11,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 05:34:11,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 05:34:11,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 05:34:11,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 05:34:11,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 05:34:11,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 05:34:11,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 05:34:11,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 05:34:11,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 05:34:11,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 05:34:11,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 05:34:11,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 05:34:11,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 05:34:11,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 05:34:11,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 05:34:11,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 05:34:11,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 05:34:11,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 05:34:11,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 05:34:11,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 05:34:11,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 05:34:11,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 05:34:11,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 05:34:11,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 05:34:11,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 05:34:11,066 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 05:34:11,103 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 05:34:11,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 05:34:11,104 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 05:34:11,104 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 05:34:11,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 05:34:11,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 05:34:11,106 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 05:34:11,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 05:34:11,106 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 05:34:11,106 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 05:34:11,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 05:34:11,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 05:34:11,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 05:34:11,108 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 05:34:11,108 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 05:34:11,108 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 05:34:11,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 05:34:11,108 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 05:34:11,108 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 05:34:11,108 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 05:34:11,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 05:34:11,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 05:34:11,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 05:34:11,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:34:11,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 05:34:11,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 05:34:11,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 05:34:11,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 05:34:11,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 05:34:11,110 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0046771f7e99737dcb98805b185666cbe0afcb5f [2021-08-27 05:34:11,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 05:34:11,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 05:34:11,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 05:34:11,415 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 05:34:11,416 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 05:34:11,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext/tree_dsw.i [2021-08-27 05:34:11,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c18a4bdad/18fd5605e79f4098a94a4d0948e4ef72/FLAGf7a5add67 [2021-08-27 05:34:12,016 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 05:34:12,020 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext/tree_dsw.i [2021-08-27 05:34:12,030 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c18a4bdad/18fd5605e79f4098a94a4d0948e4ef72/FLAGf7a5add67 [2021-08-27 05:34:12,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c18a4bdad/18fd5605e79f4098a94a4d0948e4ef72 [2021-08-27 05:34:12,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 05:34:12,446 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 05:34:12,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 05:34:12,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 05:34:12,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 05:34:12,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:34:12" (1/1) ... [2021-08-27 05:34:12,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@294c9a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:34:12, skipping insertion in model container [2021-08-27 05:34:12,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:34:12" (1/1) ... [2021-08-27 05:34:12,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 05:34:12,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:34:12,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:34:12,774 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-08-27 05:34:12,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@21efbb95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:34:12, skipping insertion in model container [2021-08-27 05:34:12,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 05:34:12,776 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-08-27 05:34:12,778 INFO L168 Benchmark]: Toolchain (without parser) took 330.99 ms. Allocated memory is still 60.8 MB. Free memory was 38.3 MB in the beginning and 42.8 MB in the end (delta: -4.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 05:34:12,779 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 60.8 MB. Free memory was 43.0 MB in the beginning and 43.0 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:34:12,781 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.60 ms. Allocated memory is still 60.8 MB. Free memory was 38.2 MB in the beginning and 42.8 MB in the end (delta: -4.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 05:34:12,782 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 60.8 MB. Free memory was 43.0 MB in the beginning and 43.0 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 323.60 ms. Allocated memory is still 60.8 MB. Free memory was 38.2 MB in the beginning and 42.8 MB in the end (delta: -4.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 571]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 05:34:14,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 05:34:14,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 05:34:14,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 05:34:14,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 05:34:14,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 05:34:14,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 05:34:14,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 05:34:14,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 05:34:14,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 05:34:14,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 05:34:14,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 05:34:14,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 05:34:14,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 05:34:14,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 05:34:14,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 05:34:14,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 05:34:14,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 05:34:14,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 05:34:14,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 05:34:14,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 05:34:14,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 05:34:14,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 05:34:14,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 05:34:14,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 05:34:14,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 05:34:14,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 05:34:14,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 05:34:14,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 05:34:14,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 05:34:14,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 05:34:14,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 05:34:14,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 05:34:14,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 05:34:14,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 05:34:14,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 05:34:14,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 05:34:14,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 05:34:14,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 05:34:14,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 05:34:14,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 05:34:14,496 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 05:34:14,521 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 05:34:14,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 05:34:14,523 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 05:34:14,523 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 05:34:14,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 05:34:14,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 05:34:14,525 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 05:34:14,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 05:34:14,526 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 05:34:14,526 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 05:34:14,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 05:34:14,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 05:34:14,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 05:34:14,527 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 05:34:14,527 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 05:34:14,528 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 05:34:14,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 05:34:14,528 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 05:34:14,528 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 05:34:14,528 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 05:34:14,529 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 05:34:14,529 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 05:34:14,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 05:34:14,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 05:34:14,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 05:34:14,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:34:14,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 05:34:14,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 05:34:14,530 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 05:34:14,530 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 05:34:14,531 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 05:34:14,531 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 05:34:14,531 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0046771f7e99737dcb98805b185666cbe0afcb5f [2021-08-27 05:34:14,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 05:34:14,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 05:34:14,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 05:34:14,841 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 05:34:14,841 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 05:34:14,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext/tree_dsw.i [2021-08-27 05:34:14,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20a2fc97d/f927b5b8fe8a4085a53244f1fa56f4d2/FLAG50f262648 [2021-08-27 05:34:15,377 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 05:34:15,382 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext/tree_dsw.i [2021-08-27 05:34:15,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20a2fc97d/f927b5b8fe8a4085a53244f1fa56f4d2/FLAG50f262648 [2021-08-27 05:34:15,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20a2fc97d/f927b5b8fe8a4085a53244f1fa56f4d2 [2021-08-27 05:34:15,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 05:34:15,738 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 05:34:15,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 05:34:15,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 05:34:15,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 05:34:15,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:34:15" (1/1) ... [2021-08-27 05:34:15,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2240a9ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:34:15, skipping insertion in model container [2021-08-27 05:34:15,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:34:15" (1/1) ... [2021-08-27 05:34:15,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 05:34:15,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:34:16,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:34:16,055 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-08-27 05:34:16,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:34:16,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:34:16,098 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 05:34:16,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:34:16,187 INFO L208 MainTranslator]: Completed translation [2021-08-27 05:34:16,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:34:16 WrapperNode [2021-08-27 05:34:16,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 05:34:16,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 05:34:16,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 05:34:16,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 05:34:16,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:34:16" (1/1) ... [2021-08-27 05:34:16,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:34:16" (1/1) ... [2021-08-27 05:34:16,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:34:16" (1/1) ... [2021-08-27 05:34:16,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:34:16" (1/1) ... [2021-08-27 05:34:16,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:34:16" (1/1) ... [2021-08-27 05:34:16,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:34:16" (1/1) ... [2021-08-27 05:34:16,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:34:16" (1/1) ... [2021-08-27 05:34:16,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 05:34:16,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 05:34:16,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 05:34:16,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 05:34:16,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:34:16" (1/1) ... [2021-08-27 05:34:16,295 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:34:16,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:34:16,314 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) [2021-08-27 05:34:16,330 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 [2021-08-27 05:34:16,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 05:34:16,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 05:34:16,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 05:34:16,363 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 05:34:16,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 05:34:16,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 05:34:16,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 05:34:16,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 05:34:16,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 05:34:16,365 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 05:34:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 05:34:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 05:34:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 05:34:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 05:34:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 05:34:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 05:34:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 05:34:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 05:34:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 05:34:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 05:34:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 05:34:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 05:34:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 05:34:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 05:34:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 05:34:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 05:34:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 05:34:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 05:34:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 05:34:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 05:34:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 05:34:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 05:34:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 05:34:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 05:34:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 05:34:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 05:34:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 05:34:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 05:34:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 05:34:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 05:34:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 05:34:16,371 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 05:34:16,371 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 05:34:16,371 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 05:34:16,372 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 05:34:16,372 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 05:34:16,372 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 05:34:16,372 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 05:34:16,372 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 05:34:16,373 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 05:34:16,373 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 05:34:16,373 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 05:34:16,373 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 05:34:16,373 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 05:34:16,373 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 05:34:16,374 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 05:34:16,374 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 05:34:16,374 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 05:34:16,374 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 05:34:16,374 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 05:34:16,375 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 05:34:16,375 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 05:34:16,376 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 05:34:16,376 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 05:34:16,376 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 05:34:16,377 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 05:34:16,377 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 05:34:16,377 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 05:34:16,377 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 05:34:16,377 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 05:34:16,377 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 05:34:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 05:34:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 05:34:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 05:34:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 05:34:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 05:34:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 05:34:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 05:34:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 05:34:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 05:34:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 05:34:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 05:34:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 05:34:16,380 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 05:34:16,380 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 05:34:16,380 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 05:34:16,380 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 05:34:16,381 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 05:34:16,381 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 05:34:16,381 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 05:34:16,381 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 05:34:16,381 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 05:34:16,381 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 05:34:16,381 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 05:34:16,382 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 05:34:16,382 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 05:34:16,382 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 05:34:16,382 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 05:34:16,382 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 05:34:16,382 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 05:34:16,382 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 05:34:16,383 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 05:34:16,383 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 05:34:16,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 05:34:16,383 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 05:34:16,383 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 05:34:16,383 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 05:34:16,384 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 05:34:16,384 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 05:34:16,384 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 05:34:16,384 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 05:34:16,384 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 05:34:16,384 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 05:34:16,384 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 05:34:16,384 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 05:34:16,385 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 05:34:16,385 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 05:34:16,385 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 05:34:16,385 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 05:34:16,386 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 05:34:16,386 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 05:34:16,386 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 05:34:16,386 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 05:34:16,387 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 05:34:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 05:34:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 05:34:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 05:34:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 05:34:16,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 05:34:16,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-27 05:34:16,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 05:34:16,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 05:34:16,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-27 05:34:16,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-27 05:34:17,472 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 05:34:17,473 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-27 05:34:17,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:34:17 BoogieIcfgContainer [2021-08-27 05:34:17,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 05:34:17,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 05:34:17,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 05:34:17,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 05:34:17,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:34:15" (1/3) ... [2021-08-27 05:34:17,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da08cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:34:17, skipping insertion in model container [2021-08-27 05:34:17,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:34:16" (2/3) ... [2021-08-27 05:34:17,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da08cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:34:17, skipping insertion in model container [2021-08-27 05:34:17,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:34:17" (3/3) ... [2021-08-27 05:34:17,480 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_dsw.i [2021-08-27 05:34:17,484 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 05:34:17,484 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 77 error locations. [2021-08-27 05:34:17,524 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 05:34:17,529 INFO L339 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, mConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 05:34:17,529 INFO L340 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2021-08-27 05:34:17,542 INFO L276 IsEmpty]: Start isEmpty. Operand has 160 states, 78 states have (on average 2.1923076923076925) internal successors, (171), 155 states have internal predecessors, (171), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 05:34:17,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 05:34:17,548 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:34:17,548 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:34:17,549 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-08-27 05:34:17,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:34:17,553 INFO L82 PathProgramCache]: Analyzing trace with hash -2115318949, now seen corresponding path program 1 times [2021-08-27 05:34:17,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:34:17,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377328141] [2021-08-27 05:34:17,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:34:17,567 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:34:17,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:34:17,569 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) [2021-08-27 05:34:17,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-27 05:34:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:34:17,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 05:34:17,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:34:17,812 INFO L388 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 [2021-08-27 05:34:17,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:17,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:34:17,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:17,860 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:34:17,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377328141] [2021-08-27 05:34:17,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [377328141] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:34:17,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:34:17,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 05:34:17,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760150360] [2021-08-27 05:34:17,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 05:34:17,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:34:17,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 05:34:17,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:34:17,886 INFO L87 Difference]: Start difference. First operand has 160 states, 78 states have (on average 2.1923076923076925) internal successors, (171), 155 states have internal predecessors, (171), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:18,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:34:18,138 INFO L93 Difference]: Finished difference Result 174 states and 186 transitions. [2021-08-27 05:34:18,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 05:34:18,140 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, (2), 1 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 7 [2021-08-27 05:34:18,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:34:18,147 INFO L225 Difference]: With dead ends: 174 [2021-08-27 05:34:18,147 INFO L226 Difference]: Without dead ends: 171 [2021-08-27 05:34:18,148 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:34:18,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-08-27 05:34:18,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 155. [2021-08-27 05:34:18,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 77 states have (on average 2.116883116883117) internal successors, (163), 151 states have internal predecessors, (163), 2 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) [2021-08-27 05:34:18,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2021-08-27 05:34:18,181 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 7 [2021-08-27 05:34:18,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:34:18,182 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2021-08-27 05:34:18,182 INFO L471 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, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:18,182 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2021-08-27 05:34:18,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 05:34:18,182 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:34:18,182 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:34:18,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-27 05:34:18,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:34:18,391 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-08-27 05:34:18,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:34:18,392 INFO L82 PathProgramCache]: Analyzing trace with hash -2115318948, now seen corresponding path program 1 times [2021-08-27 05:34:18,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:34:18,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086913745] [2021-08-27 05:34:18,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:34:18,393 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:34:18,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:34:18,394 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) [2021-08-27 05:34:18,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-27 05:34:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:34:18,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-27 05:34:18,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:34:18,572 INFO L388 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 [2021-08-27 05:34:18,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:18,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:34:18,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:18,669 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:34:18,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086913745] [2021-08-27 05:34:18,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086913745] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:34:18,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:34:18,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-08-27 05:34:18,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712502495] [2021-08-27 05:34:18,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 05:34:18,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:34:18,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 05:34:18,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:34:18,674 INFO L87 Difference]: Start difference. First operand 155 states and 166 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, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:18,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:34:18,966 INFO L93 Difference]: Finished difference Result 153 states and 164 transitions. [2021-08-27 05:34:18,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 05:34:18,967 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, (2), 1 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 7 [2021-08-27 05:34:18,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:34:18,968 INFO L225 Difference]: With dead ends: 153 [2021-08-27 05:34:18,968 INFO L226 Difference]: Without dead ends: 153 [2021-08-27 05:34:18,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:34:18,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-08-27 05:34:18,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-08-27 05:34:18,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 77 states have (on average 2.090909090909091) internal successors, (161), 149 states have internal predecessors, (161), 2 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) [2021-08-27 05:34:18,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 164 transitions. [2021-08-27 05:34:18,988 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 164 transitions. Word has length 7 [2021-08-27 05:34:18,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:34:18,988 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 164 transitions. [2021-08-27 05:34:18,988 INFO L471 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, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:18,988 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 164 transitions. [2021-08-27 05:34:18,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 05:34:18,989 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:34:18,989 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:34:19,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-27 05:34:19,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:34:19,202 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-08-27 05:34:19,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:34:19,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1706631467, now seen corresponding path program 1 times [2021-08-27 05:34:19,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:34:19,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378033612] [2021-08-27 05:34:19,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:34:19,203 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:34:19,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:34:19,204 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) [2021-08-27 05:34:19,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-27 05:34:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:34:19,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-27 05:34:19,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:34:19,405 INFO L388 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 [2021-08-27 05:34:19,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:19,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:34:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:19,488 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:34:19,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378033612] [2021-08-27 05:34:19,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378033612] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:34:19,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:34:19,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-27 05:34:19,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425633970] [2021-08-27 05:34:19,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 05:34:19,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:34:19,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 05:34:19,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:34:19,491 INFO L87 Difference]: Start difference. First operand 153 states and 164 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:19,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:34:19,876 INFO L93 Difference]: Finished difference Result 163 states and 178 transitions. [2021-08-27 05:34:19,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 05:34:19,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 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 10 [2021-08-27 05:34:19,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:34:19,878 INFO L225 Difference]: With dead ends: 163 [2021-08-27 05:34:19,878 INFO L226 Difference]: Without dead ends: 163 [2021-08-27 05:34:19,878 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 6 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 05:34:19,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-08-27 05:34:19,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 138. [2021-08-27 05:34:19,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 80 states have (on average 1.8625) internal successors, (149), 134 states have internal predecessors, (149), 2 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) [2021-08-27 05:34:19,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 152 transitions. [2021-08-27 05:34:19,886 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 152 transitions. Word has length 10 [2021-08-27 05:34:19,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:34:19,886 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 152 transitions. [2021-08-27 05:34:19,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:19,886 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 152 transitions. [2021-08-27 05:34:19,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 05:34:19,887 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:34:19,887 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:34:19,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-27 05:34:20,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:34:20,093 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-08-27 05:34:20,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:34:20,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1706631466, now seen corresponding path program 1 times [2021-08-27 05:34:20,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:34:20,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862932247] [2021-08-27 05:34:20,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:34:20,094 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:34:20,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:34:20,095 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) [2021-08-27 05:34:20,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-27 05:34:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:34:20,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 05:34:20,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:34:20,281 INFO L388 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 [2021-08-27 05:34:20,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:20,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:34:20,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:20,487 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:34:20,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862932247] [2021-08-27 05:34:20,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862932247] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:34:20,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:34:20,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-08-27 05:34:20,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436351858] [2021-08-27 05:34:20,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 05:34:20,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:34:20,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 05:34:20,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:34:20,488 INFO L87 Difference]: Start difference. First operand 138 states and 152 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:21,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:34:21,064 INFO L93 Difference]: Finished difference Result 203 states and 223 transitions. [2021-08-27 05:34:21,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 05:34:21,065 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 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 10 [2021-08-27 05:34:21,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:34:21,068 INFO L225 Difference]: With dead ends: 203 [2021-08-27 05:34:21,068 INFO L226 Difference]: Without dead ends: 203 [2021-08-27 05:34:21,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 91.4ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:34:21,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-08-27 05:34:21,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 163. [2021-08-27 05:34:21,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 110 states have (on average 1.6636363636363636) internal successors, (183), 159 states have internal predecessors, (183), 2 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) [2021-08-27 05:34:21,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 186 transitions. [2021-08-27 05:34:21,076 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 186 transitions. Word has length 10 [2021-08-27 05:34:21,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:34:21,076 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 186 transitions. [2021-08-27 05:34:21,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:21,077 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 186 transitions. [2021-08-27 05:34:21,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-27 05:34:21,077 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:34:21,077 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:34:21,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-27 05:34:21,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:34:21,278 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr44REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-08-27 05:34:21,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:34:21,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1565867212, now seen corresponding path program 1 times [2021-08-27 05:34:21,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:34:21,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315501704] [2021-08-27 05:34:21,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:34:21,279 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:34:21,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:34:21,280 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) [2021-08-27 05:34:21,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-27 05:34:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:34:21,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 05:34:21,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:34:21,439 INFO L388 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 [2021-08-27 05:34:21,496 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:34:21,497 INFO L388 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 16 [2021-08-27 05:34:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:21,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:34:21,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:21,579 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:34:21,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315501704] [2021-08-27 05:34:21,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315501704] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:34:21,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:34:21,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-27 05:34:21,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231551490] [2021-08-27 05:34:21,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 05:34:21,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:34:21,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 05:34:21,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:34:21,581 INFO L87 Difference]: Start difference. First operand 163 states and 186 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:21,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:34:21,833 INFO L93 Difference]: Finished difference Result 180 states and 203 transitions. [2021-08-27 05:34:21,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 05:34:21,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 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 13 [2021-08-27 05:34:21,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:34:21,835 INFO L225 Difference]: With dead ends: 180 [2021-08-27 05:34:21,835 INFO L226 Difference]: Without dead ends: 180 [2021-08-27 05:34:21,835 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 7 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 05:34:21,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-08-27 05:34:21,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 163. [2021-08-27 05:34:21,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 110 states have (on average 1.6545454545454545) internal successors, (182), 159 states have internal predecessors, (182), 2 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) [2021-08-27 05:34:21,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 185 transitions. [2021-08-27 05:34:21,842 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 185 transitions. Word has length 13 [2021-08-27 05:34:21,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:34:21,842 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 185 transitions. [2021-08-27 05:34:21,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:21,843 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 185 transitions. [2021-08-27 05:34:21,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 05:34:21,843 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:34:21,843 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:34:21,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-08-27 05:34:22,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:34:22,051 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-08-27 05:34:22,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:34:22,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1772540751, now seen corresponding path program 1 times [2021-08-27 05:34:22,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:34:22,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146667374] [2021-08-27 05:34:22,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:34:22,052 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:34:22,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:34:22,053 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) [2021-08-27 05:34:22,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-27 05:34:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:34:22,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 05:34:22,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:34:22,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:22,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:34:22,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:22,318 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:34:22,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146667374] [2021-08-27 05:34:22,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146667374] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:34:22,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:34:22,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-27 05:34:22,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532283756] [2021-08-27 05:34:22,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 05:34:22,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:34:22,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 05:34:22,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:34:22,322 INFO L87 Difference]: Start difference. First operand 163 states and 185 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:22,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:34:22,329 INFO L93 Difference]: Finished difference Result 165 states and 187 transitions. [2021-08-27 05:34:22,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 05:34:22,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 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 17 [2021-08-27 05:34:22,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:34:22,331 INFO L225 Difference]: With dead ends: 165 [2021-08-27 05:34:22,331 INFO L226 Difference]: Without dead ends: 165 [2021-08-27 05:34:22,332 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:34:22,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-08-27 05:34:22,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-08-27 05:34:22,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 112 states have (on average 1.6428571428571428) internal successors, (184), 161 states have internal predecessors, (184), 2 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) [2021-08-27 05:34:22,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 187 transitions. [2021-08-27 05:34:22,348 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 187 transitions. Word has length 17 [2021-08-27 05:34:22,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:34:22,349 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 187 transitions. [2021-08-27 05:34:22,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:22,349 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 187 transitions. [2021-08-27 05:34:22,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-27 05:34:22,349 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:34:22,349 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:34:22,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-27 05:34:22,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:34:22,550 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr18REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-08-27 05:34:22,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:34:22,551 INFO L82 PathProgramCache]: Analyzing trace with hash 185388856, now seen corresponding path program 1 times [2021-08-27 05:34:22,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:34:22,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200243158] [2021-08-27 05:34:22,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:34:22,551 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:34:22,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:34:22,553 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) [2021-08-27 05:34:22,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-27 05:34:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:34:22,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 05:34:22,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:34:22,780 INFO L388 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 [2021-08-27 05:34:22,795 INFO L388 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 20 treesize of output 16 [2021-08-27 05:34:22,824 INFO L388 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 24 treesize of output 16 [2021-08-27 05:34:22,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:22,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:34:22,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:22,920 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:34:22,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200243158] [2021-08-27 05:34:22,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200243158] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:34:22,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:34:22,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-27 05:34:22,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350022343] [2021-08-27 05:34:22,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 05:34:22,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:34:22,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 05:34:22,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 05:34:22,922 INFO L87 Difference]: Start difference. First operand 165 states and 187 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:23,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:34:23,235 INFO L93 Difference]: Finished difference Result 164 states and 185 transitions. [2021-08-27 05:34:23,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:34:23,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 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 19 [2021-08-27 05:34:23,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:34:23,236 INFO L225 Difference]: With dead ends: 164 [2021-08-27 05:34:23,236 INFO L226 Difference]: Without dead ends: 164 [2021-08-27 05:34:23,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 44.6ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-27 05:34:23,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-08-27 05:34:23,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-08-27 05:34:23,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 112 states have (on average 1.625) internal successors, (182), 160 states have internal predecessors, (182), 2 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) [2021-08-27 05:34:23,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 185 transitions. [2021-08-27 05:34:23,241 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 185 transitions. Word has length 19 [2021-08-27 05:34:23,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:34:23,241 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 185 transitions. [2021-08-27 05:34:23,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:23,241 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 185 transitions. [2021-08-27 05:34:23,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-27 05:34:23,241 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:34:23,242 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:34:23,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-27 05:34:23,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:34:23,451 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr19REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-08-27 05:34:23,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:34:23,451 INFO L82 PathProgramCache]: Analyzing trace with hash 185388857, now seen corresponding path program 1 times [2021-08-27 05:34:23,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:34:23,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976411894] [2021-08-27 05:34:23,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:34:23,452 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:34:23,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:34:23,453 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) [2021-08-27 05:34:23,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-27 05:34:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:34:23,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 05:34:23,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:34:23,700 INFO L388 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 [2021-08-27 05:34:23,726 INFO L388 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 11 treesize of output 7 [2021-08-27 05:34:23,732 INFO L388 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 17 treesize of output 13 [2021-08-27 05:34:23,775 INFO L388 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 23 [2021-08-27 05:34:23,779 INFO L388 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 20 treesize of output 12 [2021-08-27 05:34:23,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:23,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:34:23,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:23,971 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:34:23,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976411894] [2021-08-27 05:34:23,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976411894] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:34:23,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:34:23,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-08-27 05:34:23,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511976690] [2021-08-27 05:34:23,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 05:34:23,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:34:23,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 05:34:23,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:34:23,973 INFO L87 Difference]: Start difference. First operand 164 states and 185 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:24,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:34:24,863 INFO L93 Difference]: Finished difference Result 163 states and 183 transitions. [2021-08-27 05:34:24,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:34:24,864 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (2), 1 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 19 [2021-08-27 05:34:24,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:34:24,864 INFO L225 Difference]: With dead ends: 163 [2021-08-27 05:34:24,865 INFO L226 Difference]: Without dead ends: 163 [2021-08-27 05:34:24,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.5ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-08-27 05:34:24,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-08-27 05:34:24,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-08-27 05:34:24,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 112 states have (on average 1.6071428571428572) internal successors, (180), 159 states have internal predecessors, (180), 2 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) [2021-08-27 05:34:24,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 183 transitions. [2021-08-27 05:34:24,868 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 183 transitions. Word has length 19 [2021-08-27 05:34:24,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:34:24,869 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 183 transitions. [2021-08-27 05:34:24,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:24,869 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 183 transitions. [2021-08-27 05:34:24,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-27 05:34:24,869 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:34:24,869 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:34:24,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-08-27 05:34:25,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:34:25,078 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-08-27 05:34:25,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:34:25,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1845199724, now seen corresponding path program 1 times [2021-08-27 05:34:25,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:34:25,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282864341] [2021-08-27 05:34:25,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:34:25,079 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:34:25,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:34:25,080 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) [2021-08-27 05:34:25,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-27 05:34:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:34:25,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 05:34:25,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:34:25,333 INFO L388 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 [2021-08-27 05:34:25,345 INFO L388 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 [2021-08-27 05:34:25,431 INFO L388 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 37 treesize of output 25 [2021-08-27 05:34:25,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-08-27 05:34:25,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:25,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:34:25,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:25,573 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:34:25,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282864341] [2021-08-27 05:34:25,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282864341] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:34:25,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:34:25,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-08-27 05:34:25,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048554561] [2021-08-27 05:34:25,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 05:34:25,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:34:25,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 05:34:25,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:34:25,575 INFO L87 Difference]: Start difference. First operand 163 states and 183 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:26,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:34:26,037 INFO L93 Difference]: Finished difference Result 201 states and 228 transitions. [2021-08-27 05:34:26,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 05:34:26,038 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 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 19 [2021-08-27 05:34:26,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:34:26,039 INFO L225 Difference]: With dead ends: 201 [2021-08-27 05:34:26,039 INFO L226 Difference]: Without dead ends: 201 [2021-08-27 05:34:26,039 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 132.8ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-08-27 05:34:26,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-08-27 05:34:26,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 174. [2021-08-27 05:34:26,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 123 states have (on average 1.5853658536585367) internal successors, (195), 170 states have internal predecessors, (195), 2 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) [2021-08-27 05:34:26,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 198 transitions. [2021-08-27 05:34:26,043 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 198 transitions. Word has length 19 [2021-08-27 05:34:26,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:34:26,043 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 198 transitions. [2021-08-27 05:34:26,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:26,043 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 198 transitions. [2021-08-27 05:34:26,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-27 05:34:26,044 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:34:26,044 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:34:26,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-08-27 05:34:26,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:34:26,244 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr36REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-08-27 05:34:26,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:34:26,245 INFO L82 PathProgramCache]: Analyzing trace with hash -2100594184, now seen corresponding path program 1 times [2021-08-27 05:34:26,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:34:26,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497365926] [2021-08-27 05:34:26,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:34:26,245 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:34:26,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:34:26,246 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) [2021-08-27 05:34:26,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-08-27 05:34:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:34:26,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 05:34:26,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:34:26,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:26,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:34:26,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:26,608 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:34:26,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497365926] [2021-08-27 05:34:26,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497365926] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:34:26,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:34:26,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-27 05:34:26,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131076433] [2021-08-27 05:34:26,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 05:34:26,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:34:26,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 05:34:26,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:34:26,610 INFO L87 Difference]: Start difference. First operand 174 states and 198 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:26,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:34:26,915 INFO L93 Difference]: Finished difference Result 214 states and 242 transitions. [2021-08-27 05:34:26,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 05:34:26,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 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 21 [2021-08-27 05:34:26,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:34:26,916 INFO L225 Difference]: With dead ends: 214 [2021-08-27 05:34:26,916 INFO L226 Difference]: Without dead ends: 214 [2021-08-27 05:34:26,916 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 05:34:26,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-08-27 05:34:26,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 176. [2021-08-27 05:34:26,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 125 states have (on average 1.592) internal successors, (199), 172 states have internal predecessors, (199), 2 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) [2021-08-27 05:34:26,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 202 transitions. [2021-08-27 05:34:26,920 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 202 transitions. Word has length 21 [2021-08-27 05:34:26,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:34:26,920 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 202 transitions. [2021-08-27 05:34:26,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:26,920 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 202 transitions. [2021-08-27 05:34:26,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-27 05:34:26,921 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:34:26,921 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:34:26,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-08-27 05:34:27,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:34:27,129 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr37REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-08-27 05:34:27,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:34:27,129 INFO L82 PathProgramCache]: Analyzing trace with hash -2100594183, now seen corresponding path program 1 times [2021-08-27 05:34:27,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:34:27,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871117421] [2021-08-27 05:34:27,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:34:27,130 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:34:27,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:34:27,131 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) [2021-08-27 05:34:27,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-08-27 05:34:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:34:27,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 05:34:27,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:34:27,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:27,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:34:27,664 INFO L388 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 22 treesize of output 18 [2021-08-27 05:34:27,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:27,840 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:34:27,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871117421] [2021-08-27 05:34:27,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1871117421] provided 1 perfect and 1 imperfect interpolant sequences [2021-08-27 05:34:27,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 05:34:27,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2021-08-27 05:34:27,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35814772] [2021-08-27 05:34:27,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 05:34:27,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:34:27,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 05:34:27,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-08-27 05:34:27,842 INFO L87 Difference]: Start difference. First operand 176 states and 202 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:28,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:34:28,409 INFO L93 Difference]: Finished difference Result 293 states and 326 transitions. [2021-08-27 05:34:28,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 05:34:28,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 1 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 21 [2021-08-27 05:34:28,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:34:28,411 INFO L225 Difference]: With dead ends: 293 [2021-08-27 05:34:28,411 INFO L226 Difference]: Without dead ends: 293 [2021-08-27 05:34:28,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 189.3ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-08-27 05:34:28,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-08-27 05:34:28,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 179. [2021-08-27 05:34:28,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 128 states have (on average 1.59375) internal successors, (204), 175 states have internal predecessors, (204), 2 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) [2021-08-27 05:34:28,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 207 transitions. [2021-08-27 05:34:28,415 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 207 transitions. Word has length 21 [2021-08-27 05:34:28,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:34:28,415 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 207 transitions. [2021-08-27 05:34:28,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:28,416 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 207 transitions. [2021-08-27 05:34:28,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-27 05:34:28,416 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:34:28,416 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:34:28,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-08-27 05:34:28,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:34:28,626 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr36REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-08-27 05:34:28,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:34:28,626 INFO L82 PathProgramCache]: Analyzing trace with hash -2100592262, now seen corresponding path program 1 times [2021-08-27 05:34:28,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:34:28,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546351622] [2021-08-27 05:34:28,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:34:28,626 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:34:28,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:34:28,627 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) [2021-08-27 05:34:28,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-08-27 05:34:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:34:28,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 05:34:28,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:34:28,903 INFO L388 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 11 treesize of output 7 [2021-08-27 05:34:28,909 INFO L388 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 11 treesize of output 7 [2021-08-27 05:34:28,938 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-08-27 05:34:28,938 INFO L388 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 21 treesize of output 20 [2021-08-27 05:34:28,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:34:28,948 INFO L388 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 21 treesize of output 20 [2021-08-27 05:34:29,071 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-08-27 05:34:29,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 47 treesize of output 33 [2021-08-27 05:34:29,077 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-08-27 05:34:29,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 13 [2021-08-27 05:34:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:29,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:34:29,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:29,332 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:34:29,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546351622] [2021-08-27 05:34:29,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546351622] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:34:29,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:34:29,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 9 [2021-08-27 05:34:29,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708193325] [2021-08-27 05:34:29,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 05:34:29,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:34:29,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 05:34:29,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-08-27 05:34:29,336 INFO L87 Difference]: Start difference. First operand 179 states and 207 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:29,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:34:29,944 INFO L93 Difference]: Finished difference Result 292 states and 326 transitions. [2021-08-27 05:34:29,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 05:34:29,945 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (2), 1 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 21 [2021-08-27 05:34:29,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:34:29,946 INFO L225 Difference]: With dead ends: 292 [2021-08-27 05:34:29,946 INFO L226 Difference]: Without dead ends: 292 [2021-08-27 05:34:29,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 189.7ms TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-08-27 05:34:29,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-08-27 05:34:29,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 189. [2021-08-27 05:34:29,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 138 states have (on average 1.5507246376811594) internal successors, (214), 185 states have internal predecessors, (214), 2 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) [2021-08-27 05:34:29,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 217 transitions. [2021-08-27 05:34:29,950 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 217 transitions. Word has length 21 [2021-08-27 05:34:29,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:34:29,951 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 217 transitions. [2021-08-27 05:34:29,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:29,951 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 217 transitions. [2021-08-27 05:34:29,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-27 05:34:29,951 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:34:29,952 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:34:29,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-08-27 05:34:30,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:34:30,152 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr30REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-08-27 05:34:30,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:34:30,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1036567727, now seen corresponding path program 1 times [2021-08-27 05:34:30,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:34:30,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57260414] [2021-08-27 05:34:30,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:34:30,153 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:34:30,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:34:30,155 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) [2021-08-27 05:34:30,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-08-27 05:34:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:34:30,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 05:34:30,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:34:30,479 INFO L388 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 [2021-08-27 05:34:30,490 INFO L388 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 22 treesize of output 18 [2021-08-27 05:34:30,511 INFO L388 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 24 treesize of output 12 [2021-08-27 05:34:30,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:30,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:34:30,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:30,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:34:30,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57260414] [2021-08-27 05:34:30,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57260414] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:34:30,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:34:30,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-27 05:34:30,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001785853] [2021-08-27 05:34:30,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 05:34:30,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:34:30,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 05:34:30,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 05:34:30,587 INFO L87 Difference]: Start difference. First operand 189 states and 217 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:30,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:34:30,918 INFO L93 Difference]: Finished difference Result 188 states and 215 transitions. [2021-08-27 05:34:30,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:34:30,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 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 21 [2021-08-27 05:34:30,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:34:30,920 INFO L225 Difference]: With dead ends: 188 [2021-08-27 05:34:30,920 INFO L226 Difference]: Without dead ends: 188 [2021-08-27 05:34:30,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 32.2ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-27 05:34:30,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-08-27 05:34:30,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-08-27 05:34:30,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 138 states have (on average 1.536231884057971) internal successors, (212), 184 states have internal predecessors, (212), 2 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) [2021-08-27 05:34:30,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 215 transitions. [2021-08-27 05:34:30,923 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 215 transitions. Word has length 21 [2021-08-27 05:34:30,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:34:30,923 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 215 transitions. [2021-08-27 05:34:30,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:30,924 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 215 transitions. [2021-08-27 05:34:30,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-27 05:34:30,924 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:34:30,924 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:34:30,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-08-27 05:34:31,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:34:31,125 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr31REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-08-27 05:34:31,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:34:31,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1036567726, now seen corresponding path program 1 times [2021-08-27 05:34:31,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:34:31,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011708314] [2021-08-27 05:34:31,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:34:31,126 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:34:31,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:34:31,126 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) [2021-08-27 05:34:31,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-08-27 05:34:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:34:31,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 05:34:31,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:34:31,448 INFO L388 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 [2021-08-27 05:34:31,480 INFO L388 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 [2021-08-27 05:34:31,487 INFO L388 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 19 treesize of output 15 [2021-08-27 05:34:31,520 INFO L388 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 39 treesize of output 27 [2021-08-27 05:34:31,523 INFO L388 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 24 treesize of output 12 [2021-08-27 05:34:31,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:31,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:34:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:31,738 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:34:31,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011708314] [2021-08-27 05:34:31,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011708314] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:34:31,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:34:31,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-08-27 05:34:31,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048949209] [2021-08-27 05:34:31,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 05:34:31,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:34:31,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 05:34:31,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:34:31,739 INFO L87 Difference]: Start difference. First operand 188 states and 215 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:32,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:34:32,530 INFO L93 Difference]: Finished difference Result 187 states and 213 transitions. [2021-08-27 05:34:32,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:34:32,530 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (2), 1 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 21 [2021-08-27 05:34:32,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:34:32,531 INFO L225 Difference]: With dead ends: 187 [2021-08-27 05:34:32,531 INFO L226 Difference]: Without dead ends: 187 [2021-08-27 05:34:32,532 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 154.5ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-08-27 05:34:32,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-08-27 05:34:32,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-08-27 05:34:32,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 138 states have (on average 1.5217391304347827) internal successors, (210), 183 states have internal predecessors, (210), 2 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) [2021-08-27 05:34:32,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 213 transitions. [2021-08-27 05:34:32,535 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 213 transitions. Word has length 21 [2021-08-27 05:34:32,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:34:32,535 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 213 transitions. [2021-08-27 05:34:32,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:32,535 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 213 transitions. [2021-08-27 05:34:32,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-27 05:34:32,536 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:34:32,536 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:34:32,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-08-27 05:34:32,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:34:32,750 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr44REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-08-27 05:34:32,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:34:32,750 INFO L82 PathProgramCache]: Analyzing trace with hash -693911223, now seen corresponding path program 1 times [2021-08-27 05:34:32,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:34:32,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332446006] [2021-08-27 05:34:32,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:34:32,754 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:34:32,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:34:32,755 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) [2021-08-27 05:34:32,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-08-27 05:34:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:34:33,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 05:34:33,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:34:33,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:33,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:34:33,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:33,242 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:34:33,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332446006] [2021-08-27 05:34:33,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332446006] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:34:33,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:34:33,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-08-27 05:34:33,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891446502] [2021-08-27 05:34:33,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 05:34:33,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:34:33,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 05:34:33,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-27 05:34:33,247 INFO L87 Difference]: Start difference. First operand 187 states and 213 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:33,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:34:33,580 INFO L93 Difference]: Finished difference Result 263 states and 293 transitions. [2021-08-27 05:34:33,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 05:34:33,580 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (2), 1 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 22 [2021-08-27 05:34:33,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:34:33,581 INFO L225 Difference]: With dead ends: 263 [2021-08-27 05:34:33,582 INFO L226 Difference]: Without dead ends: 263 [2021-08-27 05:34:33,582 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 85.9ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-08-27 05:34:33,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-08-27 05:34:33,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 186. [2021-08-27 05:34:33,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 137 states have (on average 1.5182481751824817) internal successors, (208), 182 states have internal predecessors, (208), 2 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) [2021-08-27 05:34:33,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 211 transitions. [2021-08-27 05:34:33,586 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 211 transitions. Word has length 22 [2021-08-27 05:34:33,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:34:33,586 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 211 transitions. [2021-08-27 05:34:33,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:33,587 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 211 transitions. [2021-08-27 05:34:33,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-27 05:34:33,587 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:34:33,587 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:34:33,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-08-27 05:34:33,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:34:33,796 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr22REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-08-27 05:34:33,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:34:33,797 INFO L82 PathProgramCache]: Analyzing trace with hash -408455078, now seen corresponding path program 1 times [2021-08-27 05:34:33,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:34:33,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103527705] [2021-08-27 05:34:33,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:34:33,797 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:34:33,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:34:33,798 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) [2021-08-27 05:34:33,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-08-27 05:34:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:34:34,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 05:34:34,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:34:34,153 INFO L388 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 [2021-08-27 05:34:34,217 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-27 05:34:34,218 INFO L388 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 23 treesize of output 30 [2021-08-27 05:34:34,278 INFO L388 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 24 treesize of output 20 [2021-08-27 05:34:34,414 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-27 05:34:34,414 INFO L388 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 44 treesize of output 34 [2021-08-27 05:34:34,522 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-27 05:34:34,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 48 [2021-08-27 05:34:34,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:34,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:34:38,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:38,827 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:34:38,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103527705] [2021-08-27 05:34:38,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103527705] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:34:38,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:34:38,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-08-27 05:34:38,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66993068] [2021-08-27 05:34:38,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-27 05:34:38,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:34:38,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-27 05:34:38,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=185, Unknown=3, NotChecked=0, Total=240 [2021-08-27 05:34:38,829 INFO L87 Difference]: Start difference. First operand 186 states and 211 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:40,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:34:40,968 INFO L93 Difference]: Finished difference Result 206 states and 232 transitions. [2021-08-27 05:34:40,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-27 05:34:40,970 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 states have internal predecessors, (36), 1 states have call successors, (2), 1 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 22 [2021-08-27 05:34:40,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:34:40,971 INFO L225 Difference]: With dead ends: 206 [2021-08-27 05:34:40,971 INFO L226 Difference]: Without dead ends: 206 [2021-08-27 05:34:40,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 5281.3ms TimeCoverageRelationStatistics Valid=171, Invalid=476, Unknown=3, NotChecked=0, Total=650 [2021-08-27 05:34:40,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-08-27 05:34:40,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 185. [2021-08-27 05:34:40,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 137 states have (on average 1.5036496350364963) internal successors, (206), 181 states have internal predecessors, (206), 2 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) [2021-08-27 05:34:40,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 209 transitions. [2021-08-27 05:34:40,975 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 209 transitions. Word has length 22 [2021-08-27 05:34:40,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:34:40,975 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 209 transitions. [2021-08-27 05:34:40,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:40,976 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 209 transitions. [2021-08-27 05:34:40,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-27 05:34:40,976 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:34:40,976 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:34:40,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-08-27 05:34:41,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:34:41,186 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr23REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-08-27 05:34:41,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:34:41,186 INFO L82 PathProgramCache]: Analyzing trace with hash -408455077, now seen corresponding path program 1 times [2021-08-27 05:34:41,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:34:41,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217362393] [2021-08-27 05:34:41,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:34:41,187 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:34:41,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:34:41,188 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) [2021-08-27 05:34:41,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-08-27 05:34:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:34:41,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 05:34:41,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:34:41,556 INFO L388 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 [2021-08-27 05:34:41,614 INFO L388 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 [2021-08-27 05:34:41,624 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:34:41,624 INFO L388 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 22 treesize of output 22 [2021-08-27 05:34:41,654 INFO L388 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 11 treesize of output 7 [2021-08-27 05:34:41,660 INFO L388 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 21 treesize of output 17 [2021-08-27 05:34:41,767 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-27 05:34:41,768 INFO L388 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 63 treesize of output 45 [2021-08-27 05:34:41,784 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-08-27 05:34:41,785 INFO L388 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 55 treesize of output 50 [2021-08-27 05:34:41,886 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-27 05:34:41,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 40 [2021-08-27 05:34:41,894 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-27 05:34:41,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 31 treesize of output 19 [2021-08-27 05:34:41,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:41,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:34:49,235 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|main_#t~mem16.offset| (_ BitVec 32))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_main_~n~0.base) c_main_~n~0.offset))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) |main_#t~mem16.offset| (_ bv0 32))) c_main_~n~0.base) c_main_~n~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) |main_#t~mem16.offset| (_ bv0 32))) c_main_~n~0.base) c_main_~n~0.offset))))) (forall ((|main_#t~mem16.offset| (_ BitVec 32))) (let ((.cse1 (select (select (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_main_~n~0.base) c_main_~n~0.offset))) (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) |main_#t~mem16.offset| (_ bv0 32)))) c_main_~n~0.base) c_main_~n~0.offset))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1))))) is different from false [2021-08-27 05:34:49,496 INFO L388 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 14 treesize of output 12 [2021-08-27 05:34:49,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:49,630 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:34:49,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217362393] [2021-08-27 05:34:49,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217362393] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:34:49,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:34:49,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-08-27 05:34:49,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271485125] [2021-08-27 05:34:49,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-27 05:34:49,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:34:49,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-27 05:34:49,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=171, Unknown=3, NotChecked=26, Total=240 [2021-08-27 05:34:49,632 INFO L87 Difference]: Start difference. First operand 185 states and 209 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:51,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:34:51,534 INFO L93 Difference]: Finished difference Result 204 states and 229 transitions. [2021-08-27 05:34:51,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-27 05:34:51,534 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 states have internal predecessors, (36), 1 states have call successors, (2), 1 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 22 [2021-08-27 05:34:51,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:34:51,535 INFO L225 Difference]: With dead ends: 204 [2021-08-27 05:34:51,535 INFO L226 Difference]: Without dead ends: 204 [2021-08-27 05:34:51,536 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 7872.7ms TimeCoverageRelationStatistics Valid=153, Invalid=448, Unknown=3, NotChecked=46, Total=650 [2021-08-27 05:34:51,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-08-27 05:34:51,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 184. [2021-08-27 05:34:51,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 137 states have (on average 1.489051094890511) internal successors, (204), 180 states have internal predecessors, (204), 2 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) [2021-08-27 05:34:51,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 207 transitions. [2021-08-27 05:34:51,539 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 207 transitions. Word has length 22 [2021-08-27 05:34:51,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:34:51,539 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 207 transitions. [2021-08-27 05:34:51,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:34:51,539 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 207 transitions. [2021-08-27 05:34:51,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-27 05:34:51,540 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:34:51,540 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:34:51,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-08-27 05:34:51,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:34:51,750 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr34REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-08-27 05:34:51,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:34:51,750 INFO L82 PathProgramCache]: Analyzing trace with hash 425808476, now seen corresponding path program 1 times [2021-08-27 05:34:51,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:34:51,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178384423] [2021-08-27 05:34:51,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:34:51,751 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:34:51,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:34:51,752 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) [2021-08-27 05:34:51,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-08-27 05:34:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:34:52,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 05:34:52,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:34:52,134 INFO L388 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 [2021-08-27 05:34:52,231 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-27 05:34:52,232 INFO L388 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 27 treesize of output 34 [2021-08-27 05:34:52,285 INFO L388 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 26 treesize of output 22 [2021-08-27 05:34:52,433 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-27 05:34:52,433 INFO L388 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 49 treesize of output 33 [2021-08-27 05:34:52,548 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-08-27 05:34:52,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 50 [2021-08-27 05:34:52,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:52,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:34:56,489 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_#t~mem21.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv4 32) c_main_~n~0.offset))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_main_~n~0.base) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) |main_#t~mem21.offset| (_ bv0 32)))) c_main_~n~0.base) .cse1)))))))) (_ bv1 1)))) is different from false [2021-08-27 05:34:56,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:34:56,719 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:34:56,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178384423] [2021-08-27 05:34:56,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178384423] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:34:56,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:34:56,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-08-27 05:34:56,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981155146] [2021-08-27 05:34:56,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-27 05:34:56,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:34:56,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-27 05:34:56,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=163, Unknown=3, NotChecked=26, Total=240 [2021-08-27 05:34:56,721 INFO L87 Difference]: Start difference. First operand 184 states and 207 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:35:02,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:35:02,235 INFO L93 Difference]: Finished difference Result 204 states and 229 transitions. [2021-08-27 05:35:02,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-27 05:35:02,236 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (2), 1 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 24 [2021-08-27 05:35:02,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:35:02,237 INFO L225 Difference]: With dead ends: 204 [2021-08-27 05:35:02,237 INFO L226 Difference]: Without dead ends: 204 [2021-08-27 05:35:02,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 4435.6ms TimeCoverageRelationStatistics Valid=161, Invalid=440, Unknown=3, NotChecked=46, Total=650 [2021-08-27 05:35:02,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-08-27 05:35:02,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 183. [2021-08-27 05:35:02,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 137 states have (on average 1.4817518248175183) internal successors, (203), 179 states have internal predecessors, (203), 2 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) [2021-08-27 05:35:02,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 206 transitions. [2021-08-27 05:35:02,240 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 206 transitions. Word has length 24 [2021-08-27 05:35:02,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:35:02,241 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 206 transitions. [2021-08-27 05:35:02,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:35:02,241 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 206 transitions. [2021-08-27 05:35:02,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-27 05:35:02,241 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:35:02,241 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:35:02,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-08-27 05:35:02,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:35:02,442 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr35REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-08-27 05:35:02,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:35:02,442 INFO L82 PathProgramCache]: Analyzing trace with hash 425808477, now seen corresponding path program 1 times [2021-08-27 05:35:02,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:35:02,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543628864] [2021-08-27 05:35:02,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:35:02,443 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:35:02,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:35:02,444 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) [2021-08-27 05:35:02,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-08-27 05:35:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:35:02,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 05:35:02,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:35:02,956 INFO L388 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 [2021-08-27 05:35:03,017 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:35:03,018 INFO L388 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 17 treesize of output 17 [2021-08-27 05:35:03,025 INFO L388 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 6 treesize of output 5 [2021-08-27 05:35:03,052 INFO L388 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 [2021-08-27 05:35:03,058 INFO L388 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 23 treesize of output 19 [2021-08-27 05:35:03,185 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-27 05:35:03,185 INFO L388 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 77 treesize of output 49 [2021-08-27 05:35:03,207 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-08-27 05:35:03,207 INFO L388 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 67 treesize of output 60 [2021-08-27 05:35:03,310 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-08-27 05:35:03,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 44 [2021-08-27 05:35:03,318 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-08-27 05:35:03,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 35 treesize of output 19 [2021-08-27 05:35:03,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:35:03,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:35:14,385 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|main_#t~mem21.offset| (_ BitVec 32))) (let ((.cse1 (bvadd (_ bv4 32) c_main_~n~0.offset))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_main_~n~0.base) .cse1))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) |main_#t~mem21.offset| (_ bv0 32))) c_main_~n~0.base) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) |main_#t~mem21.offset| (_ bv0 32))) c_main_~n~0.base) .cse1)))))) (forall ((|main_#t~mem21.offset| (_ BitVec 32))) (let ((.cse2 (let ((.cse4 (bvadd (_ bv4 32) c_main_~n~0.offset))) (select (select (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_main_~n~0.base) .cse4))) (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) |main_#t~mem21.offset| (_ bv0 32)))) c_main_~n~0.base) .cse4)))) (bvule (bvadd .cse2 (_ bv4 32)) (bvadd .cse2 (_ bv8 32)))))) is different from false [2021-08-27 05:35:14,653 INFO L388 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 14 treesize of output 12 [2021-08-27 05:35:14,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:35:14,816 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:35:14,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543628864] [2021-08-27 05:35:14,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543628864] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:35:14,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:35:14,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-08-27 05:35:14,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875684497] [2021-08-27 05:35:14,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-27 05:35:14,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:35:14,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-27 05:35:14,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=173, Unknown=1, NotChecked=26, Total=240 [2021-08-27 05:35:14,818 INFO L87 Difference]: Start difference. First operand 183 states and 206 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:35:21,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:35:21,515 INFO L93 Difference]: Finished difference Result 202 states and 227 transitions. [2021-08-27 05:35:21,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-27 05:35:21,515 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (2), 1 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 24 [2021-08-27 05:35:21,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:35:21,516 INFO L225 Difference]: With dead ends: 202 [2021-08-27 05:35:21,516 INFO L226 Difference]: Without dead ends: 202 [2021-08-27 05:35:21,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 15662.5ms TimeCoverageRelationStatistics Valid=153, Invalid=450, Unknown=1, NotChecked=46, Total=650 [2021-08-27 05:35:21,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-08-27 05:35:21,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 182. [2021-08-27 05:35:21,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 137 states have (on average 1.4744525547445255) internal successors, (202), 178 states have internal predecessors, (202), 2 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) [2021-08-27 05:35:21,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 205 transitions. [2021-08-27 05:35:21,520 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 205 transitions. Word has length 24 [2021-08-27 05:35:21,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:35:21,521 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 205 transitions. [2021-08-27 05:35:21,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:35:21,521 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 205 transitions. [2021-08-27 05:35:21,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-27 05:35:21,522 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:35:21,522 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:35:21,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-08-27 05:35:21,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:35:21,732 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr36REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-08-27 05:35:21,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:35:21,732 INFO L82 PathProgramCache]: Analyzing trace with hash 2092972279, now seen corresponding path program 1 times [2021-08-27 05:35:21,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:35:21,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014173542] [2021-08-27 05:35:21,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:35:21,733 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:35:21,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:35:21,733 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) [2021-08-27 05:35:21,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-08-27 05:35:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:35:22,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-27 05:35:22,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:35:22,182 INFO L388 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 [2021-08-27 05:35:22,188 INFO L388 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 [2021-08-27 05:35:22,310 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-08-27 05:35:22,310 INFO L388 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 27 treesize of output 20 [2021-08-27 05:35:22,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:35:22,319 INFO L388 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 27 treesize of output 20 [2021-08-27 05:35:22,382 INFO L354 Elim1Store]: treesize reduction 31, result has 18.4 percent of original size [2021-08-27 05:35:22,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 23 [2021-08-27 05:35:22,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:35:22,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-08-27 05:35:22,459 INFO L388 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 21 [2021-08-27 05:35:22,461 INFO L388 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 18 treesize of output 10 [2021-08-27 05:35:22,565 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:35:22,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:35:22,783 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:35:22,783 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:35:22,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014173542] [2021-08-27 05:35:22,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014173542] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:35:22,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:35:22,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2021-08-27 05:35:22,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832681660] [2021-08-27 05:35:22,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 05:35:22,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:35:22,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 05:35:22,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-08-27 05:35:22,785 INFO L87 Difference]: Start difference. First operand 182 states and 205 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:35:23,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:35:23,829 INFO L93 Difference]: Finished difference Result 222 states and 248 transitions. [2021-08-27 05:35:23,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-27 05:35:23,830 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (2), 1 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 30 [2021-08-27 05:35:23,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:35:23,831 INFO L225 Difference]: With dead ends: 222 [2021-08-27 05:35:23,831 INFO L226 Difference]: Without dead ends: 222 [2021-08-27 05:35:23,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 342.3ms TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-08-27 05:35:23,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-08-27 05:35:23,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 191. [2021-08-27 05:35:23,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 146 states have (on average 1.4452054794520548) internal successors, (211), 187 states have internal predecessors, (211), 2 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) [2021-08-27 05:35:23,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 214 transitions. [2021-08-27 05:35:23,838 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 214 transitions. Word has length 30 [2021-08-27 05:35:23,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:35:23,838 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 214 transitions. [2021-08-27 05:35:23,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:35:23,839 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 214 transitions. [2021-08-27 05:35:23,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-27 05:35:23,839 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:35:23,840 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-27 05:35:23,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-08-27 05:35:24,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:35:24,051 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-08-27 05:35:24,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:35:24,051 INFO L82 PathProgramCache]: Analyzing trace with hash 863299567, now seen corresponding path program 1 times [2021-08-27 05:35:24,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:35:24,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819974779] [2021-08-27 05:35:24,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:35:24,052 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:35:24,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:35:24,053 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:35:24,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-08-27 05:35:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:35:24,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-27 05:35:24,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:35:24,561 INFO L388 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 [2021-08-27 05:35:24,593 INFO L388 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 [2021-08-27 05:35:24,601 INFO L388 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 [2021-08-27 05:35:24,813 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:35:24,813 INFO L388 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 18 treesize of output 18 [2021-08-27 05:35:24,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:35:24,853 INFO L388 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 25 treesize of output 24 [2021-08-27 05:35:24,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:35:24,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-08-27 05:35:25,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:35:25,030 INFO L354 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2021-08-27 05:35:25,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 54 [2021-08-27 05:35:25,048 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-08-27 05:35:25,049 INFO L388 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 57 treesize of output 52 [2021-08-27 05:35:25,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:35:25,282 INFO L354 Elim1Store]: treesize reduction 108, result has 18.2 percent of original size [2021-08-27 05:35:25,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 75 [2021-08-27 05:35:25,311 INFO L354 Elim1Store]: treesize reduction 84, result has 20.0 percent of original size [2021-08-27 05:35:25,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 83 treesize of output 81 [2021-08-27 05:35:33,782 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-08-27 05:35:33,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 40 [2021-08-27 05:35:33,793 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-08-27 05:35:33,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 31 treesize of output 17 [2021-08-27 05:35:33,872 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:35:33,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:35:54,014 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:35:54,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819974779] [2021-08-27 05:35:54,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 05:35:54,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [37047318] [2021-08-27 05:35:54,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:35:54,015 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-27 05:35:54,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-27 05:35:54,024 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-27 05:35:54,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-08-27 05:35:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:35:54,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-27 05:35:54,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:35:54,807 INFO L388 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 [2021-08-27 05:35:54,852 INFO L388 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 [2021-08-27 05:35:54,863 INFO L388 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 [2021-08-27 05:35:55,066 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:35:55,067 INFO L388 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 18 treesize of output 18 [2021-08-27 05:35:55,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:35:55,126 INFO L388 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 21 treesize of output 20 [2021-08-27 05:35:55,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:35:55,141 INFO L388 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 25 treesize of output 24 [2021-08-27 05:35:55,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:35:55,303 INFO L354 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2021-08-27 05:35:55,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 54 [2021-08-27 05:35:55,325 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-08-27 05:35:55,325 INFO L388 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 57 treesize of output 52 [2021-08-27 05:35:59,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:35:59,607 INFO L354 Elim1Store]: treesize reduction 108, result has 18.2 percent of original size [2021-08-27 05:35:59,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 91 treesize of output 75 [2021-08-27 05:35:59,651 INFO L354 Elim1Store]: treesize reduction 84, result has 20.0 percent of original size [2021-08-27 05:35:59,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 83 treesize of output 81 [2021-08-27 05:36:04,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 23 [2021-08-27 05:36:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:36:04,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:36:06,485 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|main_#t~mem17.offset| (_ BitVec 32))) (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem17.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem17.base|) (bvadd (_ bv4 32) |main_#t~mem17.offset|) (_ bv0 32))) c_main_~root~0.base) (bvadd c_main_~root~0.offset (_ bv4 32))))) (forall ((|main_#t~mem17.offset| (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem17.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem17.base|) (bvadd (_ bv4 32) |main_#t~mem17.offset|) (_ bv0 32))) c_main_~root~0.base) (bvadd c_main_~root~0.offset (_ bv4 32))) (_ bv0 32)))) is different from false [2021-08-27 05:36:23,789 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 05:36:23,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480506154] [2021-08-27 05:36:23,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:36:23,790 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:36:23,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:36:23,801 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:36:23,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-08-27 05:36:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:36:24,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-27 05:36:24,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:36:24,610 INFO L388 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 [2021-08-27 05:36:24,619 INFO L388 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 [2021-08-27 05:36:24,853 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:36:24,853 INFO L388 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 21 treesize of output 21 [2021-08-27 05:36:24,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:36:24,892 INFO L388 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 21 treesize of output 20 [2021-08-27 05:36:24,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:36:24,913 INFO L388 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 25 treesize of output 24 [2021-08-27 05:36:25,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:36:25,045 INFO L354 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2021-08-27 05:36:25,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 54 [2021-08-27 05:36:25,065 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-08-27 05:36:25,065 INFO L388 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 57 treesize of output 52 [2021-08-27 05:36:25,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:36:25,252 INFO L354 Elim1Store]: treesize reduction 108, result has 18.2 percent of original size [2021-08-27 05:36:25,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 75 [2021-08-27 05:36:25,287 INFO L354 Elim1Store]: treesize reduction 84, result has 20.0 percent of original size [2021-08-27 05:36:25,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 83 treesize of output 81 [2021-08-27 05:36:25,552 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-08-27 05:36:25,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 40 [2021-08-27 05:36:25,557 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-08-27 05:36:25,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 31 treesize of output 17 [2021-08-27 05:36:25,579 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:36:25,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:36:55,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 05:36:55,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:36:55,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-27 05:36:55,143 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-27 05:36:55,143 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-27 05:36:55,147 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 05:36:55,148 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 05:36:55,148 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 05:36:55,157 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 05:36:55,157 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 05:36:55,157 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 05:36:55,157 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-08-27 05:36:55,157 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-08-27 05:36:55,158 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-08-27 05:36:55,158 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-08-27 05:36:55,158 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-08-27 05:36:55,158 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-08-27 05:36:55,158 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-08-27 05:36:55,158 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-08-27 05:36:55,158 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-08-27 05:36:55,158 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-08-27 05:36:55,159 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-08-27 05:36:55,159 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-08-27 05:36:55,159 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-08-27 05:36:55,159 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-08-27 05:36:55,159 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-08-27 05:36:55,159 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-08-27 05:36:55,159 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-08-27 05:36:55,160 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-08-27 05:36:55,160 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-08-27 05:36:55,160 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-08-27 05:36:55,160 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-08-27 05:36:55,160 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-08-27 05:36:55,160 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-08-27 05:36:55,160 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-08-27 05:36:55,161 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-08-27 05:36:55,161 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-08-27 05:36:55,161 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-08-27 05:36:55,161 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-08-27 05:36:55,161 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION [2021-08-27 05:36:55,161 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-08-27 05:36:55,161 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-08-27 05:36:55,161 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-08-27 05:36:55,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-08-27 05:36:55,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-08-27 05:36:55,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-08-27 05:36:55,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41REQUIRES_VIOLATION [2021-08-27 05:36:55,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION [2021-08-27 05:36:55,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43REQUIRES_VIOLATION [2021-08-27 05:36:55,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44REQUIRES_VIOLATION [2021-08-27 05:36:55,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-08-27 05:36:55,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION [2021-08-27 05:36:55,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47REQUIRES_VIOLATION [2021-08-27 05:36:55,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48REQUIRES_VIOLATION [2021-08-27 05:36:55,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-08-27 05:36:55,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-08-27 05:36:55,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51REQUIRES_VIOLATION [2021-08-27 05:36:55,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52REQUIRES_VIOLATION [2021-08-27 05:36:55,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53REQUIRES_VIOLATION [2021-08-27 05:36:55,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:36:55,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr55ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:36:55,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr56ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:36:55,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr57REQUIRES_VIOLATION [2021-08-27 05:36:55,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr58REQUIRES_VIOLATION [2021-08-27 05:36:55,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr59REQUIRES_VIOLATION [2021-08-27 05:36:55,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr60REQUIRES_VIOLATION [2021-08-27 05:36:55,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr61REQUIRES_VIOLATION [2021-08-27 05:36:55,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr62REQUIRES_VIOLATION [2021-08-27 05:36:55,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr63REQUIRES_VIOLATION [2021-08-27 05:36:55,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr64REQUIRES_VIOLATION [2021-08-27 05:36:55,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr65REQUIRES_VIOLATION [2021-08-27 05:36:55,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr66REQUIRES_VIOLATION [2021-08-27 05:36:55,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr67REQUIRES_VIOLATION [2021-08-27 05:36:55,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr68REQUIRES_VIOLATION [2021-08-27 05:36:55,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr69REQUIRES_VIOLATION [2021-08-27 05:36:55,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr70REQUIRES_VIOLATION [2021-08-27 05:36:55,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr71REQUIRES_VIOLATION [2021-08-27 05:36:55,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr72REQUIRES_VIOLATION [2021-08-27 05:36:55,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr73ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:36:55,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr74ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:36:55,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr75ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:36:55,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr76ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 05:36:55,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-08-27 05:36:55,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-08-27 05:36:55,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-08-27 05:36:55,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:36:55,792 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 05:36:55,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:36:55 BoogieIcfgContainer [2021-08-27 05:36:55,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 05:36:55,802 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 05:36:55,802 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 05:36:55,802 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 05:36:55,802 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:34:17" (3/4) ... [2021-08-27 05:36:55,805 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 05:36:55,805 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 05:36:55,805 INFO L168 Benchmark]: Toolchain (without parser) took 160067.64 ms. Allocated memory was 48.2 MB in the beginning and 130.0 MB in the end (delta: 81.8 MB). Free memory was 23.1 MB in the beginning and 89.5 MB in the end (delta: -66.4 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2021-08-27 05:36:55,806 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 48.2 MB. Free memory was 30.9 MB in the beginning and 30.9 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:36:55,807 INFO L168 Benchmark]: CACSL2BoogieTranslator took 448.72 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 22.9 MB in the beginning and 32.4 MB in the end (delta: -9.5 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-08-27 05:36:55,807 INFO L168 Benchmark]: Boogie Preprocessor took 97.86 ms. Allocated memory is still 60.8 MB. Free memory was 32.4 MB in the beginning and 42.5 MB in the end (delta: -10.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2021-08-27 05:36:55,807 INFO L168 Benchmark]: RCFGBuilder took 1185.56 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 42.5 MB in the beginning and 33.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. [2021-08-27 05:36:55,808 INFO L168 Benchmark]: TraceAbstraction took 158325.70 ms. Allocated memory was 73.4 MB in the beginning and 130.0 MB in the end (delta: 56.6 MB). Free memory was 32.6 MB in the beginning and 90.6 MB in the end (delta: -58.0 MB). Peak memory consumption was 65.7 MB. Max. memory is 16.1 GB. [2021-08-27 05:36:55,808 INFO L168 Benchmark]: Witness Printer took 3.18 ms. Allocated memory is still 130.0 MB. Free memory is still 89.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:36:55,813 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 48.2 MB. Free memory was 30.9 MB in the beginning and 30.9 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 448.72 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 22.9 MB in the beginning and 32.4 MB in the end (delta: -9.5 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 97.86 ms. Allocated memory is still 60.8 MB. Free memory was 32.4 MB in the beginning and 42.5 MB in the end (delta: -10.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1185.56 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 42.5 MB in the beginning and 33.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 158325.70 ms. Allocated memory was 73.4 MB in the beginning and 130.0 MB in the end (delta: 56.6 MB). Free memory was 32.6 MB in the beginning and 90.6 MB in the end (delta: -58.0 MB). Peak memory consumption was 65.7 MB. Max. memory is 16.1 GB. * Witness Printer took 3.18 ms. Allocated memory is still 130.0 MB. Free memory is still 89.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L533] struct TreeNode* root = malloc(sizeof(*root)), *n; [L533] struct TreeNode* root = malloc(sizeof(*root)), *n; [L534] root->left = ((void *)0) [L535] root->right = ((void *)0) [L536] COND TRUE __VERIFIER_nondet_int() [L537] n = root [L538] EXPR n->left [L538] n->left && n->right [L538] COND FALSE !(n->left && n->right) [L544] EXPR n->left [L544] COND TRUE !n->left && __VERIFIER_nondet_int() [L545] n->left = malloc(sizeof(*n)) [L546] EXPR n->left [L546] n->left->left = ((void *)0) [L547] EXPR n->left [L547] n->left->right = ((void *)0) [L549] EXPR n->right [L549] COND FALSE !(!n->right && __VERIFIER_nondet_int()) [L536] COND TRUE __VERIFIER_nondet_int() [L537] n = root [L538] EXPR n->left [L538] n->left && n->right [L538] EXPR n->right [L538] n->left && n->right [L538] COND TRUE n->left && n->right [L539] COND FALSE !(__VERIFIER_nondet_int()) [L542] EXPR n->right [L542] n = n->right [L538] n->left - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 561]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 561]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 561]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 561]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 574]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 574]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 583]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 583]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 524]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 184 locations, 77 error locations. Started 1 CEGAR loops. OverallTime: 158269.4ms, OverallIterations: 21, TraceHistogramMax: 3, EmptinessCheckTime: 18.8ms, AutomataDifference: 23752.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2054 SDtfs, 3438 SDslu, 4942 SDs, 0 SdLazy, 6360 SolverSat, 310 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 14450.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 802 GetRequests, 564 SyntacticMatches, 36 SemanticMatches, 202 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 34750.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=191occurred in iteration=20, InterpolantAutomatonStates: 165, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 130.7ms AutomataMinimizationTime, 20 MinimizatonAttempts, 570 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 183.0ms SsaConstructionTime, 651.9ms SatisfiabilityAnalysisTime, 33393.5ms InterpolantComputationTime, 370 NumberOfCodeBlocks, 370 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 700 ConstructedInterpolants, 30 QuantifiedInterpolants, 6316 SizeOfPredicates, 112 NumberOfNonLiveVariables, 2177 ConjunctsInSsa, 146 ConjunctsInUnsatCore, 40 InterpolantComputations, 35 PerfectInterpolantSequences, 22/44 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-27 05:36:55,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...