./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 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 0.1.25-906a4fb [2020-10-19 18:03:19,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:03:19,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:03:19,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:03:19,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:03:19,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:03:19,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:03:19,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:03:19,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:03:19,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:03:19,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:03:19,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:03:19,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:03:19,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:03:19,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:03:19,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:03:19,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:03:19,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:03:19,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:03:19,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:03:19,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:03:19,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:03:19,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:03:19,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:03:19,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:03:19,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:03:19,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:03:19,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:03:19,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:03:19,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:03:19,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:03:19,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:03:19,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:03:19,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:03:19,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:03:19,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:03:19,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:03:19,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:03:19,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:03:19,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:03:19,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:03:19,573 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:03:19,618 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:03:19,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:03:19,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:03:19,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:03:19,621 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:03:19,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:03:19,622 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:03:19,622 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:03:19,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:03:19,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:03:19,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:03:19,624 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:03:19,624 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:03:19,625 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:03:19,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:03:19,626 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:03:19,626 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:03:19,626 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:03:19,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:03:19,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:03:19,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:03:19,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:03:19,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:03:19,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:03:19,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:03:19,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:03:19,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:03:19,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:03:19,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 [2020-10-19 18:03:19,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:03:19,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:03:19,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:03:19,996 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:03:19,996 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:03:19,998 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext/tree_dsw.i [2020-10-19 18:03:20,080 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d43e2d8a/955c8e7a77cc4ed198648f6255583596/FLAGbbe240f8b [2020-10-19 18:03:20,657 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:03:20,658 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext/tree_dsw.i [2020-10-19 18:03:20,682 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d43e2d8a/955c8e7a77cc4ed198648f6255583596/FLAGbbe240f8b [2020-10-19 18:03:20,981 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d43e2d8a/955c8e7a77cc4ed198648f6255583596 [2020-10-19 18:03:20,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:03:20,991 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:03:20,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:03:20,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:03:20,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:03:20,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:03:20" (1/1) ... [2020-10-19 18:03:21,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d0d0883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:03:20, skipping insertion in model container [2020-10-19 18:03:21,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:03:20" (1/1) ... [2020-10-19 18:03:21,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:03:21,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:03:21,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:03:21,479 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) [2020-10-19 18:03:21,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@468ac96a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:03:21, skipping insertion in model container [2020-10-19 18:03:21,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:03:21,481 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2020-10-19 18:03:21,484 INFO L168 Benchmark]: Toolchain (without parser) took 496.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -173.9 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:03:21,484 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:03:21,486 INFO L168 Benchmark]: CACSL2BoogieTranslator took 488.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -179.3 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:03:21,488 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 488.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -179.3 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 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 0.1.25-906a4fb [2020-10-19 18:03:23,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:03:23,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:03:23,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:03:23,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:03:23,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:03:23,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:03:23,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:03:23,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:03:23,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:03:23,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:03:23,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:03:23,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:03:23,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:03:23,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:03:23,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:03:23,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:03:23,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:03:23,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:03:23,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:03:23,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:03:23,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:03:23,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:03:23,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:03:23,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:03:23,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:03:23,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:03:23,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:03:23,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:03:23,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:03:23,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:03:23,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:03:23,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:03:23,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:03:23,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:03:23,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:03:23,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:03:23,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:03:23,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:03:23,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:03:23,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:03:23,499 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-19 18:03:23,545 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:03:23,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:03:23,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:03:23,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:03:23,548 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:03:23,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:03:23,549 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:03:23,549 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:03:23,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:03:23,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:03:23,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:03:23,551 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:03:23,552 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:03:23,552 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:03:23,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:03:23,553 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:03:23,553 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 18:03:23,553 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 18:03:23,554 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:03:23,554 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:03:23,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:03:23,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:03:23,555 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:03:23,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:03:23,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:03:23,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:03:23,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:03:23,556 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 18:03:23,557 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 18:03:23,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:03:23,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 18:03:23,557 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 [2020-10-19 18:03:23,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:03:23,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:03:23,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:03:23,898 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:03:23,899 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:03:23,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext/tree_dsw.i [2020-10-19 18:03:23,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ce498466/6d019bb4dab348309d6ed574767c86bb/FLAG41ed17488 [2020-10-19 18:03:24,578 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:03:24,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext/tree_dsw.i [2020-10-19 18:03:24,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ce498466/6d019bb4dab348309d6ed574767c86bb/FLAG41ed17488 [2020-10-19 18:03:24,824 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ce498466/6d019bb4dab348309d6ed574767c86bb [2020-10-19 18:03:24,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:03:24,835 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:03:24,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:03:24,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:03:24,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:03:24,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:03:24" (1/1) ... [2020-10-19 18:03:24,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dddfd31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:03:24, skipping insertion in model container [2020-10-19 18:03:24,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:03:24" (1/1) ... [2020-10-19 18:03:24,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:03:24,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:03:25,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:03:25,322 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-10-19 18:03:25,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:03:25,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:03:25,393 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:03:25,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:03:25,518 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:03:25,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:03:25 WrapperNode [2020-10-19 18:03:25,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:03:25,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:03:25,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:03:25,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:03:25,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:03:25" (1/1) ... [2020-10-19 18:03:25,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:03:25" (1/1) ... [2020-10-19 18:03:25,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:03:25" (1/1) ... [2020-10-19 18:03:25,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:03:25" (1/1) ... [2020-10-19 18:03:25,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:03:25" (1/1) ... [2020-10-19 18:03:25,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:03:25" (1/1) ... [2020-10-19 18:03:25,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:03:25" (1/1) ... [2020-10-19 18:03:25,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:03:25,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:03:25,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:03:25,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:03:25,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:03:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:03:25,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:03:25,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:03:25,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 18:03:25,689 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:03:25,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:03:25,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:03:25,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 18:03:25,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 18:03:25,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 18:03:25,691 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:03:25,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:03:25,691 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:03:25,691 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:03:25,692 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:03:25,692 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:03:25,692 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:03:25,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:03:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:03:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:03:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:03:25,694 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:03:25,694 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:03:25,694 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:03:25,694 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:03:25,695 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:03:25,695 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:03:25,695 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:03:25,695 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:03:25,696 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:03:25,696 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:03:25,696 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:03:25,696 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:03:25,697 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:03:25,697 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:03:25,697 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:03:25,697 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 18:03:25,697 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 18:03:25,697 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 18:03:25,697 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:03:25,698 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:03:25,698 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:03:25,698 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:03:25,698 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:03:25,698 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:03:25,698 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:03:25,698 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:03:25,699 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:03:25,699 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:03:25,699 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:03:25,699 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:03:25,699 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:03:25,699 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:03:25,700 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:03:25,700 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:03:25,700 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:03:25,700 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:03:25,700 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:03:25,700 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:03:25,700 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:03:25,700 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:03:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:03:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:03:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:03:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:03:25,702 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:03:25,702 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:03:25,702 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:03:25,702 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:03:25,702 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:03:25,702 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:03:25,703 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:03:25,703 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:03:25,703 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:03:25,703 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:03:25,704 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:03:25,704 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:03:25,704 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:03:25,704 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:03:25,704 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:03:25,705 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:03:25,705 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:03:25,705 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:03:25,705 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:03:25,705 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:03:25,705 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:03:25,706 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:03:25,706 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:03:25,706 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:03:25,706 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:03:25,706 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:03:25,706 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:03:25,706 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:03:25,706 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:03:25,706 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:03:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:03:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:03:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:03:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:03:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:03:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:03:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:03:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:03:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:03:25,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:03:25,708 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:03:25,708 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:03:25,708 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:03:25,708 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:03:25,708 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:03:25,709 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:03:25,709 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:03:25,709 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:03:25,709 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:03:25,709 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:03:25,710 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:03:25,710 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:03:25,710 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:03:25,710 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:03:25,710 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:03:25,711 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:03:25,711 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:03:25,711 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:03:25,711 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:03:25,711 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:03:25,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:03:25,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:03:25,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:03:25,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:03:25,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:03:25,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 18:03:25,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:03:25,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 18:03:25,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-19 18:03:25,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-19 18:03:26,814 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:03:26,814 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-19 18:03:26,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:03:26 BoogieIcfgContainer [2020-10-19 18:03:26,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:03:26,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:03:26,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:03:26,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:03:26,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:03:24" (1/3) ... [2020-10-19 18:03:26,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d8a421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:03:26, skipping insertion in model container [2020-10-19 18:03:26,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:03:25" (2/3) ... [2020-10-19 18:03:26,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d8a421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:03:26, skipping insertion in model container [2020-10-19 18:03:26,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:03:26" (3/3) ... [2020-10-19 18:03:26,829 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_dsw.i [2020-10-19 18:03:26,844 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:03:26,854 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 78 error locations. [2020-10-19 18:03:26,872 INFO L253 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2020-10-19 18:03:26,896 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:03:26,897 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:03:26,897 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:03:26,897 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:03:26,897 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:03:26,898 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:03:26,898 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:03:26,898 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:03:26,921 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2020-10-19 18:03:26,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:03:26,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:03:26,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:03:26,934 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:03:26,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:03:26,942 INFO L82 PathProgramCache]: Analyzing trace with hash -2056213541, now seen corresponding path program 1 times [2020-10-19 18:03:26,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:03:26,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830986443] [2020-10-19 18:03:26,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-19 18:03:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:03:27,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 18:03:27,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:03:27,230 INFO L384 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 [2020-10-19 18:03:27,231 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:27,240 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:27,241 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:27,242 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:03:27,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:27,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:03:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:27,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830986443] [2020-10-19 18:03:27,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:03:27,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-19 18:03:27,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411542040] [2020-10-19 18:03:27,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:03:27,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:03:27,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:03:27,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:03:27,320 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 3 states. [2020-10-19 18:03:27,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:03:27,726 INFO L93 Difference]: Finished difference Result 172 states and 184 transitions. [2020-10-19 18:03:27,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:03:27,728 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-19 18:03:27,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:03:27,742 INFO L225 Difference]: With dead ends: 172 [2020-10-19 18:03:27,742 INFO L226 Difference]: Without dead ends: 169 [2020-10-19 18:03:27,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:03:27,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-19 18:03:27,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 153. [2020-10-19 18:03:27,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-19 18:03:27,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 164 transitions. [2020-10-19 18:03:27,802 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 164 transitions. Word has length 7 [2020-10-19 18:03:27,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:03:27,803 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 164 transitions. [2020-10-19 18:03:27,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:03:27,804 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 164 transitions. [2020-10-19 18:03:27,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:03:27,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:03:27,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:03:28,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 18:03:28,020 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:03:28,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:03:28,023 INFO L82 PathProgramCache]: Analyzing trace with hash -2056213540, now seen corresponding path program 1 times [2020-10-19 18:03:28,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:03:28,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468105196] [2020-10-19 18:03:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-19 18:03:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:03:28,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:03:28,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:03:28,188 INFO L384 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 [2020-10-19 18:03:28,189 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:28,203 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:28,203 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:28,204 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:03:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:28,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:03:28,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:28,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468105196] [2020-10-19 18:03:28,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:03:28,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-10-19 18:03:28,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710319120] [2020-10-19 18:03:28,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:03:28,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:03:28,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:03:28,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:03:28,288 INFO L87 Difference]: Start difference. First operand 153 states and 164 transitions. Second operand 4 states. [2020-10-19 18:03:28,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:03:28,717 INFO L93 Difference]: Finished difference Result 151 states and 162 transitions. [2020-10-19 18:03:28,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:03:28,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-19 18:03:28,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:03:28,721 INFO L225 Difference]: With dead ends: 151 [2020-10-19 18:03:28,721 INFO L226 Difference]: Without dead ends: 151 [2020-10-19 18:03:28,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:03:28,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-19 18:03:28,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-10-19 18:03:28,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-19 18:03:28,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 162 transitions. [2020-10-19 18:03:28,736 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 162 transitions. Word has length 7 [2020-10-19 18:03:28,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:03:28,737 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 162 transitions. [2020-10-19 18:03:28,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:03:28,737 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 162 transitions. [2020-10-19 18:03:28,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:03:28,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:03:28,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:03:28,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 18:03:28,951 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:03:28,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:03:28,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1834011113, now seen corresponding path program 1 times [2020-10-19 18:03:28,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:03:28,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921378066] [2020-10-19 18:03:28,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-19 18:03:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:03:29,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:03:29,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:03:29,094 INFO L384 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 [2020-10-19 18:03:29,094 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:29,109 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:29,109 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:29,110 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:03:29,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:29,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:03:29,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:29,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921378066] [2020-10-19 18:03:29,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:03:29,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 18:03:29,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392049943] [2020-10-19 18:03:29,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:03:29,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:03:29,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:03:29,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:03:29,161 INFO L87 Difference]: Start difference. First operand 151 states and 162 transitions. Second operand 4 states. [2020-10-19 18:03:29,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:03:29,714 INFO L93 Difference]: Finished difference Result 161 states and 176 transitions. [2020-10-19 18:03:29,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:03:29,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-19 18:03:29,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:03:29,716 INFO L225 Difference]: With dead ends: 161 [2020-10-19 18:03:29,716 INFO L226 Difference]: Without dead ends: 161 [2020-10-19 18:03:29,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:03:29,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-19 18:03:29,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 136. [2020-10-19 18:03:29,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-19 18:03:29,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 150 transitions. [2020-10-19 18:03:29,729 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 150 transitions. Word has length 10 [2020-10-19 18:03:29,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:03:29,730 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 150 transitions. [2020-10-19 18:03:29,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:03:29,730 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 150 transitions. [2020-10-19 18:03:29,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:03:29,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:03:29,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:03:29,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 18:03:29,945 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:03:29,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:03:29,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1834011112, now seen corresponding path program 1 times [2020-10-19 18:03:29,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:03:29,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349316732] [2020-10-19 18:03:29,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-19 18:03:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:03:30,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:03:30,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:03:30,091 INFO L384 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 [2020-10-19 18:03:30,091 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:30,097 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:30,098 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:30,098 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:03:30,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:30,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:03:30,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:30,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349316732] [2020-10-19 18:03:30,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:03:30,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-19 18:03:30,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112437794] [2020-10-19 18:03:30,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:03:30,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:03:30,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:03:30,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:03:30,218 INFO L87 Difference]: Start difference. First operand 136 states and 150 transitions. Second operand 6 states. [2020-10-19 18:03:31,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:03:31,212 INFO L93 Difference]: Finished difference Result 199 states and 219 transitions. [2020-10-19 18:03:31,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:03:31,214 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-19 18:03:31,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:03:31,217 INFO L225 Difference]: With dead ends: 199 [2020-10-19 18:03:31,218 INFO L226 Difference]: Without dead ends: 199 [2020-10-19 18:03:31,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:03:31,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-19 18:03:31,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 159. [2020-10-19 18:03:31,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-19 18:03:31,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 182 transitions. [2020-10-19 18:03:31,232 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 182 transitions. Word has length 10 [2020-10-19 18:03:31,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:03:31,232 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 182 transitions. [2020-10-19 18:03:31,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:03:31,233 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 182 transitions. [2020-10-19 18:03:31,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 18:03:31,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:03:31,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:03:31,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-19 18:03:31,439 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:03:31,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:03:31,440 INFO L82 PathProgramCache]: Analyzing trace with hash -745103988, now seen corresponding path program 1 times [2020-10-19 18:03:31,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:03:31,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649186661] [2020-10-19 18:03:31,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-19 18:03:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:03:31,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:03:31,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:03:31,557 INFO L384 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 [2020-10-19 18:03:31,558 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:31,560 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:31,560 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:31,560 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:03:31,583 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:31,583 INFO L384 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 13 treesize of output 17 [2020-10-19 18:03:31,585 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:31,588 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:31,588 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:31,588 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:4 [2020-10-19 18:03:31,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:31,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:03:31,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:31,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649186661] [2020-10-19 18:03:31,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:03:31,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-19 18:03:31,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464705376] [2020-10-19 18:03:31,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:03:31,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:03:31,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:03:31,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:03:31,609 INFO L87 Difference]: Start difference. First operand 159 states and 182 transitions. Second operand 4 states. [2020-10-19 18:03:31,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:03:31,953 INFO L93 Difference]: Finished difference Result 176 states and 199 transitions. [2020-10-19 18:03:31,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:03:31,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-19 18:03:31,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:03:31,955 INFO L225 Difference]: With dead ends: 176 [2020-10-19 18:03:31,955 INFO L226 Difference]: Without dead ends: 176 [2020-10-19 18:03:31,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:03:31,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-19 18:03:31,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 159. [2020-10-19 18:03:31,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-19 18:03:31,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 181 transitions. [2020-10-19 18:03:31,966 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 181 transitions. Word has length 13 [2020-10-19 18:03:31,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:03:31,966 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 181 transitions. [2020-10-19 18:03:31,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:03:31,966 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 181 transitions. [2020-10-19 18:03:31,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 18:03:31,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:03:31,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:03:32,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-19 18:03:32,176 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:03:32,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:03:32,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1802568457, now seen corresponding path program 1 times [2020-10-19 18:03:32,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:03:32,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019887034] [2020-10-19 18:03:32,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-19 18:03:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:03:32,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:03:32,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:03:32,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:32,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:03:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:32,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019887034] [2020-10-19 18:03:32,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:03:32,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 18:03:32,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897528959] [2020-10-19 18:03:32,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:03:32,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:03:32,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:03:32,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:03:32,297 INFO L87 Difference]: Start difference. First operand 159 states and 181 transitions. Second operand 3 states. [2020-10-19 18:03:32,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:03:32,306 INFO L93 Difference]: Finished difference Result 161 states and 183 transitions. [2020-10-19 18:03:32,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:03:32,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-19 18:03:32,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:03:32,308 INFO L225 Difference]: With dead ends: 161 [2020-10-19 18:03:32,309 INFO L226 Difference]: Without dead ends: 161 [2020-10-19 18:03:32,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:03:32,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-19 18:03:32,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-10-19 18:03:32,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-19 18:03:32,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 183 transitions. [2020-10-19 18:03:32,317 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 183 transitions. Word has length 17 [2020-10-19 18:03:32,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:03:32,318 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 183 transitions. [2020-10-19 18:03:32,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:03:32,318 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 183 transitions. [2020-10-19 18:03:32,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 18:03:32,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:03:32,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:03:32,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-19 18:03:32,531 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:03:32,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:03:32,532 INFO L82 PathProgramCache]: Analyzing trace with hash -87868968, now seen corresponding path program 1 times [2020-10-19 18:03:32,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:03:32,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [989385500] [2020-10-19 18:03:32,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-19 18:03:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:03:32,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:03:32,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:03:32,643 INFO L384 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 [2020-10-19 18:03:32,643 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:32,645 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:32,646 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:32,646 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:03:32,670 INFO L384 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 [2020-10-19 18:03:32,671 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:32,676 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:32,677 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:32,678 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-10-19 18:03:32,691 INFO L384 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 17 treesize of output 9 [2020-10-19 18:03:32,692 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:32,694 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:32,695 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:32,695 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-10-19 18:03:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:32,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:03:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:32,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [989385500] [2020-10-19 18:03:32,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:03:32,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-19 18:03:32,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827460900] [2020-10-19 18:03:32,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:03:32,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:03:32,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:03:32,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:03:32,716 INFO L87 Difference]: Start difference. First operand 161 states and 183 transitions. Second operand 5 states. [2020-10-19 18:03:33,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:03:33,505 INFO L93 Difference]: Finished difference Result 262 states and 300 transitions. [2020-10-19 18:03:33,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:03:33,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-19 18:03:33,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:03:33,507 INFO L225 Difference]: With dead ends: 262 [2020-10-19 18:03:33,507 INFO L226 Difference]: Without dead ends: 262 [2020-10-19 18:03:33,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:03:33,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-19 18:03:33,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 160. [2020-10-19 18:03:33,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-19 18:03:33,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 181 transitions. [2020-10-19 18:03:33,515 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 181 transitions. Word has length 18 [2020-10-19 18:03:33,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:03:33,516 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 181 transitions. [2020-10-19 18:03:33,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:03:33,516 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 181 transitions. [2020-10-19 18:03:33,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 18:03:33,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:03:33,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:03:33,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-19 18:03:33,730 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:03:33,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:03:33,731 INFO L82 PathProgramCache]: Analyzing trace with hash -87868967, now seen corresponding path program 1 times [2020-10-19 18:03:33,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:03:33,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057578215] [2020-10-19 18:03:33,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-19 18:03:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:03:33,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:03:33,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:03:33,857 INFO L384 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 [2020-10-19 18:03:33,857 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:33,862 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:33,863 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:33,863 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:03:33,887 INFO L384 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 [2020-10-19 18:03:33,887 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:33,900 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:33,908 INFO L384 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 [2020-10-19 18:03:33,909 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:33,918 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:33,921 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:33,922 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:19 [2020-10-19 18:03:33,959 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-19 18:03:33,960 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:33,971 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:33,981 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2020-10-19 18:03:33,982 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:33,989 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:33,990 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:33,990 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:33, output treesize:11 [2020-10-19 18:03:34,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:34,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:03:34,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:34,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057578215] [2020-10-19 18:03:34,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:03:34,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-10-19 18:03:34,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496057259] [2020-10-19 18:03:34,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:03:34,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:03:34,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:03:34,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:03:34,150 INFO L87 Difference]: Start difference. First operand 160 states and 181 transitions. Second operand 8 states. [2020-10-19 18:03:36,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:03:36,423 INFO L93 Difference]: Finished difference Result 293 states and 331 transitions. [2020-10-19 18:03:36,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:03:36,425 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-10-19 18:03:36,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:03:36,427 INFO L225 Difference]: With dead ends: 293 [2020-10-19 18:03:36,427 INFO L226 Difference]: Without dead ends: 293 [2020-10-19 18:03:36,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:03:36,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-19 18:03:36,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 159. [2020-10-19 18:03:36,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-19 18:03:36,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 179 transitions. [2020-10-19 18:03:36,435 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 179 transitions. Word has length 18 [2020-10-19 18:03:36,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:03:36,435 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 179 transitions. [2020-10-19 18:03:36,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:03:36,436 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 179 transitions. [2020-10-19 18:03:36,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 18:03:36,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:03:36,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:03:36,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-19 18:03:36,652 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:03:36,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:03:36,653 INFO L82 PathProgramCache]: Analyzing trace with hash -459743974, now seen corresponding path program 1 times [2020-10-19 18:03:36,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:03:36,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537491586] [2020-10-19 18:03:36,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-19 18:03:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:03:36,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:03:36,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:03:36,772 INFO L384 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 [2020-10-19 18:03:36,772 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:36,785 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:36,790 INFO L384 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 [2020-10-19 18:03:36,790 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:36,798 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:36,798 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:36,799 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:19 [2020-10-19 18:03:36,852 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-10-19 18:03:36,853 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:36,864 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:36,867 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-10-19 18:03:36,869 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:36,876 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:36,876 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:36,876 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:7 [2020-10-19 18:03:36,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:36,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:03:36,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:36,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537491586] [2020-10-19 18:03:36,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:03:36,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-10-19 18:03:36,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887321973] [2020-10-19 18:03:36,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:03:36,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:03:36,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:03:36,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:03:36,920 INFO L87 Difference]: Start difference. First operand 159 states and 179 transitions. Second operand 6 states. [2020-10-19 18:03:37,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:03:37,640 INFO L93 Difference]: Finished difference Result 196 states and 223 transitions. [2020-10-19 18:03:37,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:03:37,641 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-19 18:03:37,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:03:37,643 INFO L225 Difference]: With dead ends: 196 [2020-10-19 18:03:37,643 INFO L226 Difference]: Without dead ends: 196 [2020-10-19 18:03:37,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:03:37,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-19 18:03:37,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 170. [2020-10-19 18:03:37,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-19 18:03:37,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 194 transitions. [2020-10-19 18:03:37,649 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 194 transitions. Word has length 19 [2020-10-19 18:03:37,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:03:37,649 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 194 transitions. [2020-10-19 18:03:37,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:03:37,649 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 194 transitions. [2020-10-19 18:03:37,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 18:03:37,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:03:37,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:03:37,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-19 18:03:37,855 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:03:37,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:03:37,858 INFO L82 PathProgramCache]: Analyzing trace with hash 2020369786, now seen corresponding path program 1 times [2020-10-19 18:03:37,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:03:37,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243600308] [2020-10-19 18:03:37,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-10-19 18:03:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:03:37,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:03:37,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:03:37,997 INFO L384 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 [2020-10-19 18:03:37,998 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:38,000 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:38,000 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:38,000 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:03:38,013 INFO L384 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 [2020-10-19 18:03:38,014 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:38,023 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:38,024 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:38,024 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-10-19 18:03:38,043 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-10-19 18:03:38,044 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:38,045 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:38,045 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:38,046 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:5 [2020-10-19 18:03:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:38,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:03:38,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:38,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243600308] [2020-10-19 18:03:38,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:03:38,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-19 18:03:38,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193495634] [2020-10-19 18:03:38,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:03:38,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:03:38,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:03:38,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:03:38,068 INFO L87 Difference]: Start difference. First operand 170 states and 194 transitions. Second operand 5 states. [2020-10-19 18:03:38,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:03:38,786 INFO L93 Difference]: Finished difference Result 269 states and 309 transitions. [2020-10-19 18:03:38,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:03:38,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-19 18:03:38,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:03:38,788 INFO L225 Difference]: With dead ends: 269 [2020-10-19 18:03:38,788 INFO L226 Difference]: Without dead ends: 269 [2020-10-19 18:03:38,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:03:38,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-19 18:03:38,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 169. [2020-10-19 18:03:38,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-19 18:03:38,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 192 transitions. [2020-10-19 18:03:38,794 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 192 transitions. Word has length 20 [2020-10-19 18:03:38,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:03:38,795 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 192 transitions. [2020-10-19 18:03:38,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:03:38,795 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 192 transitions. [2020-10-19 18:03:38,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 18:03:38,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:03:38,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:03:39,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-10-19 18:03:39,004 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:03:39,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:03:39,005 INFO L82 PathProgramCache]: Analyzing trace with hash 2020369787, now seen corresponding path program 1 times [2020-10-19 18:03:39,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:03:39,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037596183] [2020-10-19 18:03:39,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-10-19 18:03:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:03:39,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:03:39,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:03:39,141 INFO L384 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 [2020-10-19 18:03:39,141 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:39,146 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:39,147 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:39,147 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:03:39,166 INFO L384 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 [2020-10-19 18:03:39,167 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:39,181 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:39,186 INFO L384 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 [2020-10-19 18:03:39,187 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:39,198 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:39,199 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:39,200 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-10-19 18:03:39,237 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-10-19 18:03:39,238 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:39,248 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:39,251 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-10-19 18:03:39,252 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:39,262 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:39,262 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:39,263 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-10-19 18:03:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:39,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:03:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:39,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037596183] [2020-10-19 18:03:39,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:03:39,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-10-19 18:03:39,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849733552] [2020-10-19 18:03:39,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:03:39,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:03:39,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:03:39,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:03:39,426 INFO L87 Difference]: Start difference. First operand 169 states and 192 transitions. Second operand 8 states. [2020-10-19 18:03:41,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:03:41,748 INFO L93 Difference]: Finished difference Result 300 states and 340 transitions. [2020-10-19 18:03:41,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:03:41,749 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-19 18:03:41,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:03:41,751 INFO L225 Difference]: With dead ends: 300 [2020-10-19 18:03:41,751 INFO L226 Difference]: Without dead ends: 300 [2020-10-19 18:03:41,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:03:41,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-19 18:03:41,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 168. [2020-10-19 18:03:41,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-19 18:03:41,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 190 transitions. [2020-10-19 18:03:41,759 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 190 transitions. Word has length 20 [2020-10-19 18:03:41,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:03:41,759 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 190 transitions. [2020-10-19 18:03:41,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:03:41,759 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 190 transitions. [2020-10-19 18:03:41,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:03:41,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:03:41,761 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:03:41,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-10-19 18:03:41,965 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:03:41,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:03:41,966 INFO L82 PathProgramCache]: Analyzing trace with hash 83892920, now seen corresponding path program 1 times [2020-10-19 18:03:41,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:03:41,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146543334] [2020-10-19 18:03:41,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-10-19 18:03:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:03:42,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:03:42,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:03:42,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:42,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:03:42,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:42,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146543334] [2020-10-19 18:03:42,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:03:42,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 18:03:42,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056096431] [2020-10-19 18:03:42,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:03:42,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:03:42,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:03:42,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:03:42,126 INFO L87 Difference]: Start difference. First operand 168 states and 190 transitions. Second operand 4 states. [2020-10-19 18:03:42,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:03:42,564 INFO L93 Difference]: Finished difference Result 208 states and 234 transitions. [2020-10-19 18:03:42,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:03:42,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-19 18:03:42,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:03:42,567 INFO L225 Difference]: With dead ends: 208 [2020-10-19 18:03:42,567 INFO L226 Difference]: Without dead ends: 208 [2020-10-19 18:03:42,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:03:42,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-19 18:03:42,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 170. [2020-10-19 18:03:42,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-19 18:03:42,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 194 transitions. [2020-10-19 18:03:42,573 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 194 transitions. Word has length 21 [2020-10-19 18:03:42,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:03:42,574 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 194 transitions. [2020-10-19 18:03:42,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:03:42,574 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 194 transitions. [2020-10-19 18:03:42,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:03:42,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:03:42,575 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:03:42,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-10-19 18:03:42,787 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:03:42,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:03:42,788 INFO L82 PathProgramCache]: Analyzing trace with hash 83892921, now seen corresponding path program 1 times [2020-10-19 18:03:42,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:03:42,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684125079] [2020-10-19 18:03:42,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-10-19 18:03:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:03:42,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 18:03:42,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:03:42,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:42,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:03:43,041 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:03:43,059 INFO L384 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 16 treesize of output 12 [2020-10-19 18:03:43,060 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:03:43,074 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2020-10-19 18:03:43,075 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:03:43,099 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:43,101 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2020-10-19 18:03:43,101 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:25 [2020-10-19 18:03:43,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:43,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684125079] [2020-10-19 18:03:43,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 18:03:43,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2020-10-19 18:03:43,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80935499] [2020-10-19 18:03:43,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:03:43,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:03:43,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:03:43,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:03:43,318 INFO L87 Difference]: Start difference. First operand 170 states and 194 transitions. Second operand 6 states. [2020-10-19 18:03:44,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:03:44,441 INFO L93 Difference]: Finished difference Result 284 states and 317 transitions. [2020-10-19 18:03:44,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:03:44,442 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-19 18:03:44,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:03:44,443 INFO L225 Difference]: With dead ends: 284 [2020-10-19 18:03:44,444 INFO L226 Difference]: Without dead ends: 284 [2020-10-19 18:03:44,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-19 18:03:44,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-19 18:03:44,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 173. [2020-10-19 18:03:44,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-19 18:03:44,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 199 transitions. [2020-10-19 18:03:44,449 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 199 transitions. Word has length 21 [2020-10-19 18:03:44,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:03:44,450 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 199 transitions. [2020-10-19 18:03:44,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:03:44,450 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 199 transitions. [2020-10-19 18:03:44,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:03:44,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:03:44,451 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:03:44,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-10-19 18:03:44,658 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:03:44,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:03:44,658 INFO L82 PathProgramCache]: Analyzing trace with hash 83894842, now seen corresponding path program 1 times [2020-10-19 18:03:44,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:03:44,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709843581] [2020-10-19 18:03:44,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-10-19 18:03:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:03:44,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-19 18:03:44,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:03:44,829 INFO L384 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 [2020-10-19 18:03:44,830 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:44,841 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:44,846 INFO L384 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 [2020-10-19 18:03:44,846 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:44,863 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:44,864 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:44,864 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2020-10-19 18:03:44,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:03:44,888 INFO L384 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 [2020-10-19 18:03:44,889 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:44,913 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:44,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:03:44,919 INFO L384 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 [2020-10-19 18:03:44,920 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:44,934 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:44,934 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:44,935 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:44, output treesize:36 [2020-10-19 18:03:44,990 INFO L384 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 22 treesize of output 10 [2020-10-19 18:03:44,991 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:45,010 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:45,014 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:45,015 INFO L384 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 1 case distinctions, treesize of input 22 treesize of output 10 [2020-10-19 18:03:45,016 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:45,021 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:45,021 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:45,021 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:7 [2020-10-19 18:03:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:45,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:03:45,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:45,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709843581] [2020-10-19 18:03:45,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:03:45,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 7] imperfect sequences [] total 11 [2020-10-19 18:03:45,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045441809] [2020-10-19 18:03:45,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:03:45,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:03:45,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:03:45,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:03:45,153 INFO L87 Difference]: Start difference. First operand 173 states and 199 transitions. Second operand 11 states. [2020-10-19 18:03:46,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:03:46,411 INFO L93 Difference]: Finished difference Result 343 states and 387 transitions. [2020-10-19 18:03:46,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-19 18:03:46,412 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-19 18:03:46,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:03:46,415 INFO L225 Difference]: With dead ends: 343 [2020-10-19 18:03:46,415 INFO L226 Difference]: Without dead ends: 343 [2020-10-19 18:03:46,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2020-10-19 18:03:46,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-19 18:03:46,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 220. [2020-10-19 18:03:46,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-19 18:03:46,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 264 transitions. [2020-10-19 18:03:46,423 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 264 transitions. Word has length 21 [2020-10-19 18:03:46,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:03:46,423 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 264 transitions. [2020-10-19 18:03:46,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:03:46,424 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 264 transitions. [2020-10-19 18:03:46,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:03:46,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:03:46,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:03:46,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-10-19 18:03:46,629 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:03:46,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:03:46,632 INFO L82 PathProgramCache]: Analyzing trace with hash -2069262949, now seen corresponding path program 1 times [2020-10-19 18:03:46,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:03:46,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607996141] [2020-10-19 18:03:46,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-10-19 18:03:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:03:46,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 18:03:46,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:03:46,768 INFO L384 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 [2020-10-19 18:03:46,769 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:46,770 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:46,771 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:46,771 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:03:46,798 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:46,798 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-10-19 18:03:46,799 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:46,816 INFO L625 ElimStorePlain]: treesize reduction 14, result has 51.7 percent of original size [2020-10-19 18:03:46,817 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:46,817 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:15 [2020-10-19 18:03:46,840 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:03:46,840 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:46,849 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:46,850 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:46,851 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:27 [2020-10-19 18:03:46,936 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:46,936 INFO L384 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 37 treesize of output 51 [2020-10-19 18:03:46,938 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-10-19 18:03:46,939 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-19 18:03:46,943 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2020-10-19 18:03:46,978 INFO L625 ElimStorePlain]: treesize reduction 71, result has 33.6 percent of original size [2020-10-19 18:03:46,979 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:03:46,979 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:36 [2020-10-19 18:03:47,038 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:47,039 INFO L384 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 38 treesize of output 33 [2020-10-19 18:03:47,040 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:47,055 INFO L625 ElimStorePlain]: treesize reduction 12, result has 58.6 percent of original size [2020-10-19 18:03:47,062 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:03:47,062 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:43, output treesize:17 [2020-10-19 18:03:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:47,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:03:55,005 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_#t~mem16.offset| (_ BitVec 32))) (= (_ bv1 1) (select |c_#valid| (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_main_~n~0.base) c_main_~n~0.offset))) (store |c_#memory_$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)))) is different from false [2020-10-19 18:03:55,012 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:55,037 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:55,038 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:03:55,046 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-19 18:03:55,046 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:33, output treesize:20 [2020-10-19 18:03:55,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:03:55,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607996141] [2020-10-19 18:03:55,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:03:55,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2020-10-19 18:03:55,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005626683] [2020-10-19 18:03:55,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-19 18:03:55,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:03:55,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-19 18:03:55,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=4, NotChecked=26, Total=240 [2020-10-19 18:03:55,143 INFO L87 Difference]: Start difference. First operand 220 states and 264 transitions. Second operand 16 states. [2020-10-19 18:03:57,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:03:57,494 INFO L93 Difference]: Finished difference Result 263 states and 311 transitions. [2020-10-19 18:03:57,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 18:03:57,495 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-19 18:03:57,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:03:57,496 INFO L225 Difference]: With dead ends: 263 [2020-10-19 18:03:57,496 INFO L226 Difference]: Without dead ends: 263 [2020-10-19 18:03:57,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=4, NotChecked=44, Total=600 [2020-10-19 18:03:57,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-19 18:03:57,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 219. [2020-10-19 18:03:57,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-19 18:03:57,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 262 transitions. [2020-10-19 18:03:57,503 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 262 transitions. Word has length 21 [2020-10-19 18:03:57,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:03:57,504 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 262 transitions. [2020-10-19 18:03:57,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-19 18:03:57,504 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 262 transitions. [2020-10-19 18:03:57,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:03:57,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:03:57,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:03:57,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-10-19 18:03:57,706 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:03:57,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:03:57,706 INFO L82 PathProgramCache]: Analyzing trace with hash -2069262948, now seen corresponding path program 1 times [2020-10-19 18:03:57,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:03:57,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280032041] [2020-10-19 18:03:57,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2020-10-19 18:03:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:03:57,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 18:03:57,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:03:57,843 INFO L384 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 [2020-10-19 18:03:57,843 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:57,845 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:57,845 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:57,845 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:03:57,859 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_156|], 1=[|v_#valid_172|]} [2020-10-19 18:03:57,862 INFO L384 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 [2020-10-19 18:03:57,863 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:57,875 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:57,884 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:57,885 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-19 18:03:57,885 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:57,893 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:57,893 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:57,893 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:20, output treesize:13 [2020-10-19 18:03:57,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280032041] [2020-10-19 18:03:57,911 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 18:03:57,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1662709880] [2020-10-19 18:03:57,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 18:03:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:03:58,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 18:03:58,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:03:58,202 INFO L384 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 [2020-10-19 18:03:58,202 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:58,204 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:58,204 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:58,204 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:03:58,211 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_157|], 1=[|v_#valid_174|]} [2020-10-19 18:03:58,214 INFO L384 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 [2020-10-19 18:03:58,214 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:58,223 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:58,231 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:58,231 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-19 18:03:58,232 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:58,238 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:58,238 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:58,238 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:20, output treesize:13 [2020-10-19 18:03:58,241 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 18:03:58,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717138846] [2020-10-19 18:03:58,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:03:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:03:58,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 18:03:58,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:03:58,354 INFO L384 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 [2020-10-19 18:03:58,354 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:58,357 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:58,357 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:58,357 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:03:58,368 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_158|], 1=[|v_#valid_176|]} [2020-10-19 18:03:58,371 INFO L384 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 [2020-10-19 18:03:58,371 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:58,382 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:58,390 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:58,390 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-19 18:03:58,391 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:03:58,398 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:03:58,399 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:03:58,399 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:20, output treesize:13 [2020-10-19 18:03:58,400 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 18:03:58,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:03:58,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-19 18:03:58,401 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-19 18:03:58,401 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:03:59,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 18:03:59,019 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-19 18:03:59,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:03:59 BoogieIcfgContainer [2020-10-19 18:03:59,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:03:59,020 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:03:59,020 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:03:59,021 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:03:59,023 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:03:26" (3/4) ... [2020-10-19 18:03:59,027 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:03:59,027 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:03:59,028 INFO L168 Benchmark]: Toolchain (without parser) took 34199.60 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 335.0 MB). Free memory was 958.6 MB in the beginning and 1.1 GB in the end (delta: -155.9 MB). Peak memory consumption was 179.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:03:59,028 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:03:59,029 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 953.3 MB in the beginning and 1.1 GB in the end (delta: -169.3 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:03:59,029 INFO L168 Benchmark]: Boogie Preprocessor took 94.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:03:59,029 INFO L168 Benchmark]: RCFGBuilder took 1202.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 84.5 MB). Peak memory consumption was 84.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:03:59,029 INFO L168 Benchmark]: TraceAbstraction took 32200.38 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 175.1 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -86.1 MB). Peak memory consumption was 89.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:03:59,030 INFO L168 Benchmark]: Witness Printer took 6.58 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:03:59,031 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 683.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 953.3 MB in the beginning and 1.1 GB in the end (delta: -169.3 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 94.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1202.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 84.5 MB). Peak memory consumption was 84.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 32200.38 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 175.1 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -86.1 MB). Peak memory consumption was 89.0 MB. Max. memory is 11.5 GB. * Witness Printer took 6.58 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 547]: 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; [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) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 184 locations, 78 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 32.1s, OverallIterations: 16, TraceHistogramMax: 2, AutomataDifference: 14.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1810 SDtfs, 2779 SDslu, 3666 SDs, 0 SdLazy, 4720 SolverSat, 226 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 516 GetRequests, 398 SyntacticMatches, 6 SemanticMatches, 112 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 10.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=220occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 908 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 10.7s InterpolantComputationTime, 243 NumberOfCodeBlocks, 243 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 456 ConstructedInterpolants, 13 QuantifiedInterpolants, 41186 SizeOfPredicates, 90 NumberOfNonLiveVariables, 1523 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 30 InterpolantComputations, 29 PerfectInterpolantSequences, 14/16 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 Received shutdown request...