./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/list-properties/list_true-unreach-call_false-valid-memtrack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 91b1670e Calling Ultimate with: 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 /storage/repos/svcomp/c/list-properties/list_true-unreach-call_false-valid-memtrack.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 45292d949331e02d780a7679ac12098a89a953bb .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: 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 /storage/repos/svcomp/c/list-properties/list_true-unreach-call_false-valid-memtrack.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 45292d949331e02d780a7679ac12098a89a953bb ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 22:54:25,583 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 22:54:25,585 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 22:54:25,597 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 22:54:25,597 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 22:54:25,598 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 22:54:25,600 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 22:54:25,604 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 22:54:25,607 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 22:54:25,610 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 22:54:25,611 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 22:54:25,611 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 22:54:25,612 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 22:54:25,613 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 22:54:25,615 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 22:54:25,616 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 22:54:25,617 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 22:54:25,619 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 22:54:25,622 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 22:54:25,623 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 22:54:25,625 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 22:54:25,626 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 22:54:25,629 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 22:54:25,630 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 22:54:25,630 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 22:54:25,631 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 22:54:25,632 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 22:54:25,633 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 22:54:25,634 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 22:54:25,635 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 22:54:25,636 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 22:54:25,637 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 22:54:25,637 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 22:54:25,637 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 22:54:25,639 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 22:54:25,640 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 22:54:25,640 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 22:54:25,663 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 22:54:25,663 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 22:54:25,664 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 22:54:25,664 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 22:54:25,667 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 22:54:25,667 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 22:54:25,667 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 22:54:25,667 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 22:54:25,667 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 22:54:25,668 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 22:54:25,668 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 22:54:25,668 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 22:54:25,668 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 22:54:25,668 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 22:54:25,669 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 22:54:25,669 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 22:54:25,669 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 22:54:25,669 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 22:54:25,669 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 22:54:25,669 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 22:54:25,673 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 22:54:25,673 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 22:54:25,673 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 22:54:25,674 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 22:54:25,674 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 22:54:25,674 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 22:54:25,674 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 22:54:25,674 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 22:54:25,674 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in 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 -> 45292d949331e02d780a7679ac12098a89a953bb [2018-11-28 22:54:25,733 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 22:54:25,752 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 22:54:25,759 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 22:54:25,760 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 22:54:25,761 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 22:54:25,762 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-properties/list_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:25,821 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c424da9d/b722b185ea62495f868db9f821a11107/FLAG1283ef45f [2018-11-28 22:54:26,334 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 22:54:26,335 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-properties/list_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:26,353 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c424da9d/b722b185ea62495f868db9f821a11107/FLAG1283ef45f [2018-11-28 22:54:26,631 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c424da9d/b722b185ea62495f868db9f821a11107 [2018-11-28 22:54:26,636 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 22:54:26,638 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 22:54:26,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 22:54:26,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 22:54:26,650 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 22:54:26,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:54:26" (1/1) ... [2018-11-28 22:54:26,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3926fb05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:26, skipping insertion in model container [2018-11-28 22:54:26,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:54:26" (1/1) ... [2018-11-28 22:54:26,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 22:54:26,730 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 22:54:27,087 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:54:27,105 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 22:54:27,176 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:54:27,257 INFO L195 MainTranslator]: Completed translation [2018-11-28 22:54:27,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:27 WrapperNode [2018-11-28 22:54:27,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 22:54:27,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 22:54:27,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 22:54:27,260 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 22:54:27,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:27" (1/1) ... [2018-11-28 22:54:27,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:27" (1/1) ... [2018-11-28 22:54:27,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:27" (1/1) ... [2018-11-28 22:54:27,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:27" (1/1) ... [2018-11-28 22:54:27,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:27" (1/1) ... [2018-11-28 22:54:27,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:27" (1/1) ... [2018-11-28 22:54:27,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:27" (1/1) ... [2018-11-28 22:54:27,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 22:54:27,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 22:54:27,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 22:54:27,418 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 22:54:27,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:27" (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 [2018-11-28 22:54:27,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 22:54:27,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 22:54:27,490 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-11-28 22:54:27,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 22:54:27,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-28 22:54:27,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 22:54:27,490 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 22:54:27,490 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 22:54:27,490 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 22:54:27,491 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 22:54:27,491 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 22:54:27,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 22:54:27,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 22:54:27,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 22:54:27,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 22:54:27,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 22:54:27,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 22:54:27,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 22:54:27,494 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 22:54:27,494 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 22:54:27,494 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 22:54:27,494 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 22:54:27,494 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 22:54:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 22:54:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 22:54:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 22:54:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 22:54:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 22:54:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 22:54:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 22:54:27,497 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 22:54:27,498 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 22:54:27,498 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 22:54:27,498 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 22:54:27,498 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 22:54:27,498 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 22:54:27,498 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 22:54:27,498 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 22:54:27,499 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 22:54:27,499 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 22:54:27,499 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 22:54:27,499 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 22:54:27,499 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 22:54:27,499 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 22:54:27,499 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 22:54:27,499 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 22:54:27,500 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 22:54:27,501 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 22:54:27,501 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 22:54:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 22:54:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 22:54:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 22:54:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 22:54:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 22:54:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 22:54:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 22:54:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 22:54:27,503 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 22:54:27,504 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 22:54:27,504 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 22:54:27,504 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 22:54:27,504 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 22:54:27,504 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 22:54:27,505 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 22:54:27,505 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 22:54:27,505 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 22:54:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 22:54:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 22:54:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 22:54:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 22:54:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-11-28 22:54:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 22:54:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 22:54:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 22:54:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 22:54:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 22:54:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 22:54:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 22:54:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 22:54:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 22:54:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 22:54:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 22:54:27,509 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 22:54:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 22:54:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 22:54:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 22:54:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 22:54:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 22:54:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 22:54:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 22:54:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 22:54:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 22:54:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 22:54:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 22:54:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 22:54:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 22:54:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 22:54:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 22:54:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 22:54:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 22:54:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 22:54:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 22:54:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 22:54:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 22:54:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 22:54:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 22:54:27,515 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 22:54:27,515 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-11-28 22:54:27,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 22:54:27,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 22:54:27,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 22:54:27,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-28 22:54:27,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-28 22:54:27,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 22:54:27,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 22:54:27,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 22:54:27,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 22:54:28,340 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 22:54:28,340 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 22:54:28,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:54:28 BoogieIcfgContainer [2018-11-28 22:54:28,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 22:54:28,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 22:54:28,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 22:54:28,345 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 22:54:28,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 10:54:26" (1/3) ... [2018-11-28 22:54:28,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38942959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:54:28, skipping insertion in model container [2018-11-28 22:54:28,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:27" (2/3) ... [2018-11-28 22:54:28,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38942959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:54:28, skipping insertion in model container [2018-11-28 22:54:28,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:54:28" (3/3) ... [2018-11-28 22:54:28,349 INFO L112 eAbstractionObserver]: Analyzing ICFG list_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:28,359 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 22:54:28,367 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 25 error locations. [2018-11-28 22:54:28,385 INFO L257 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2018-11-28 22:54:28,414 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 22:54:28,415 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 22:54:28,415 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 22:54:28,415 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 22:54:28,417 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 22:54:28,417 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 22:54:28,418 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 22:54:28,418 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 22:54:28,418 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 22:54:28,435 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2018-11-28 22:54:28,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 22:54:28,445 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:28,446 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:28,448 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr18REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION]=== [2018-11-28 22:54:28,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:28,459 INFO L82 PathProgramCache]: Analyzing trace with hash -2132532229, now seen corresponding path program 1 times [2018-11-28 22:54:28,461 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:28,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:28,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:28,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:28,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:28,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:28,688 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:28,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 22:54:28,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:54:28,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:54:28,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:54:28,707 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2018-11-28 22:54:29,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:29,291 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2018-11-28 22:54:29,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:54:29,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-28 22:54:29,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:29,304 INFO L225 Difference]: With dead ends: 79 [2018-11-28 22:54:29,304 INFO L226 Difference]: Without dead ends: 70 [2018-11-28 22:54:29,306 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 22:54:29,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-28 22:54:29,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2018-11-28 22:54:29,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-11-28 22:54:29,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2018-11-28 22:54:29,350 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 11 [2018-11-28 22:54:29,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:29,351 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2018-11-28 22:54:29,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:54:29,351 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2018-11-28 22:54:29,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 22:54:29,352 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:29,352 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:29,352 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr18REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION]=== [2018-11-28 22:54:29,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:29,353 INFO L82 PathProgramCache]: Analyzing trace with hash -2132532228, now seen corresponding path program 1 times [2018-11-28 22:54:29,353 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:29,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:29,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:29,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:29,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:29,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:29,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:29,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 22:54:29,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:54:29,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:54:29,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:54:29,472 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand 4 states. [2018-11-28 22:54:29,610 WARN L180 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-28 22:54:30,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:30,362 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2018-11-28 22:54:30,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:54:30,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-28 22:54:30,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:30,365 INFO L225 Difference]: With dead ends: 88 [2018-11-28 22:54:30,365 INFO L226 Difference]: Without dead ends: 88 [2018-11-28 22:54:30,366 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 22:54:30,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-11-28 22:54:30,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 79. [2018-11-28 22:54:30,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-11-28 22:54:30,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2018-11-28 22:54:30,375 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 11 [2018-11-28 22:54:30,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:30,376 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2018-11-28 22:54:30,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:54:30,376 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2018-11-28 22:54:30,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 22:54:30,377 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:30,377 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:30,378 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr18REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION]=== [2018-11-28 22:54:30,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:30,378 INFO L82 PathProgramCache]: Analyzing trace with hash 2029512520, now seen corresponding path program 1 times [2018-11-28 22:54:30,378 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:30,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:30,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:30,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:30,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:30,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:30,511 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:30,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 22:54:30,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 22:54:30,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 22:54:30,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:54:30,512 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand 6 states. [2018-11-28 22:54:30,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:30,825 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2018-11-28 22:54:30,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 22:54:30,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-11-28 22:54:30,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:30,827 INFO L225 Difference]: With dead ends: 112 [2018-11-28 22:54:30,827 INFO L226 Difference]: Without dead ends: 112 [2018-11-28 22:54:30,828 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-28 22:54:30,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-11-28 22:54:30,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 82. [2018-11-28 22:54:30,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-11-28 22:54:30,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2018-11-28 22:54:30,837 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 19 [2018-11-28 22:54:30,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:30,837 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2018-11-28 22:54:30,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 22:54:30,838 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2018-11-28 22:54:30,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 22:54:30,838 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:30,839 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:30,839 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr18REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION]=== [2018-11-28 22:54:30,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:30,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1001615762, now seen corresponding path program 1 times [2018-11-28 22:54:30,840 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:30,840 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:30,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:30,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:30,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:30,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:30,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 22:54:30,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 22:54:30,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 22:54:30,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:54:30,974 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 6 states. [2018-11-28 22:54:31,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:31,315 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2018-11-28 22:54:31,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 22:54:31,320 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-11-28 22:54:31,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:31,321 INFO L225 Difference]: With dead ends: 105 [2018-11-28 22:54:31,321 INFO L226 Difference]: Without dead ends: 105 [2018-11-28 22:54:31,322 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-28 22:54:31,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-11-28 22:54:31,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 85. [2018-11-28 22:54:31,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-11-28 22:54:31,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2018-11-28 22:54:31,330 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 19 [2018-11-28 22:54:31,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:31,330 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2018-11-28 22:54:31,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 22:54:31,331 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2018-11-28 22:54:31,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 22:54:31,332 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:31,332 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:31,332 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr18REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION]=== [2018-11-28 22:54:31,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:31,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1001615761, now seen corresponding path program 1 times [2018-11-28 22:54:31,333 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:31,333 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:31,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:31,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:31,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:31,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:31,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 22:54:31,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 22:54:31,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 22:54:31,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:54:31,472 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 6 states. [2018-11-28 22:54:32,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:32,108 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2018-11-28 22:54:32,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 22:54:32,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-11-28 22:54:32,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:32,113 INFO L225 Difference]: With dead ends: 106 [2018-11-28 22:54:32,113 INFO L226 Difference]: Without dead ends: 106 [2018-11-28 22:54:32,114 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-11-28 22:54:32,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-11-28 22:54:32,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 76. [2018-11-28 22:54:32,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-11-28 22:54:32,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2018-11-28 22:54:32,121 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 19 [2018-11-28 22:54:32,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:32,122 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2018-11-28 22:54:32,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 22:54:32,122 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2018-11-28 22:54:32,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-28 22:54:32,123 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:32,123 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:32,123 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr18REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION]=== [2018-11-28 22:54:32,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:32,124 INFO L82 PathProgramCache]: Analyzing trace with hash 398800981, now seen corresponding path program 1 times [2018-11-28 22:54:32,124 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:32,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:32,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:32,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:32,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:32,232 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:32,232 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 22:54:32,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 22:54:32,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 22:54:32,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:54:32,233 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 6 states. [2018-11-28 22:54:32,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:32,447 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2018-11-28 22:54:32,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 22:54:32,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-11-28 22:54:32,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:32,450 INFO L225 Difference]: With dead ends: 101 [2018-11-28 22:54:32,450 INFO L226 Difference]: Without dead ends: 101 [2018-11-28 22:54:32,451 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-28 22:54:32,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-11-28 22:54:32,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 78. [2018-11-28 22:54:32,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-11-28 22:54:32,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2018-11-28 22:54:32,457 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 21 [2018-11-28 22:54:32,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:32,458 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2018-11-28 22:54:32,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 22:54:32,458 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2018-11-28 22:54:32,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-28 22:54:32,459 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:32,459 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:32,459 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr18REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION]=== [2018-11-28 22:54:32,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:32,460 INFO L82 PathProgramCache]: Analyzing trace with hash 102986752, now seen corresponding path program 1 times [2018-11-28 22:54:32,460 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:32,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:32,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:32,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:32,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:32,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:32,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:32,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 22:54:32,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 22:54:32,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 22:54:32,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:54:32,572 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand 6 states. [2018-11-28 22:54:32,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:32,787 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2018-11-28 22:54:32,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 22:54:32,791 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-11-28 22:54:32,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:32,792 INFO L225 Difference]: With dead ends: 86 [2018-11-28 22:54:32,792 INFO L226 Difference]: Without dead ends: 86 [2018-11-28 22:54:32,793 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-28 22:54:32,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-11-28 22:54:32,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 76. [2018-11-28 22:54:32,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-11-28 22:54:32,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2018-11-28 22:54:32,801 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 21 [2018-11-28 22:54:32,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:32,801 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2018-11-28 22:54:32,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 22:54:32,801 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2018-11-28 22:54:32,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-28 22:54:32,802 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:32,802 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:32,803 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr18REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION]=== [2018-11-28 22:54:32,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:32,803 INFO L82 PathProgramCache]: Analyzing trace with hash 102986753, now seen corresponding path program 1 times [2018-11-28 22:54:32,803 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:32,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:32,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:32,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:32,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:33,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:33,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:33,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 22:54:33,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 22:54:33,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 22:54:33,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:54:33,068 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 6 states. [2018-11-28 22:54:33,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:33,475 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2018-11-28 22:54:33,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 22:54:33,476 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-11-28 22:54:33,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:33,478 INFO L225 Difference]: With dead ends: 83 [2018-11-28 22:54:33,478 INFO L226 Difference]: Without dead ends: 83 [2018-11-28 22:54:33,479 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-11-28 22:54:33,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-11-28 22:54:33,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2018-11-28 22:54:33,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-28 22:54:33,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2018-11-28 22:54:33,484 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 21 [2018-11-28 22:54:33,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:33,484 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2018-11-28 22:54:33,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 22:54:33,484 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2018-11-28 22:54:33,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 22:54:33,485 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:33,485 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:33,485 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr18REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION]=== [2018-11-28 22:54:33,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:33,486 INFO L82 PathProgramCache]: Analyzing trace with hash -523696583, now seen corresponding path program 1 times [2018-11-28 22:54:33,486 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:33,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:33,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:33,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:33,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 22:54:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 22:54:33,531 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 22:54:33,548 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-11-28 22:54:33,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 10:54:33 BoogieIcfgContainer [2018-11-28 22:54:33,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 22:54:33,563 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 22:54:33,563 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 22:54:33,563 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 22:54:33,564 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:54:28" (3/4) ... [2018-11-28 22:54:33,568 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 22:54:33,568 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 22:54:33,569 INFO L168 Benchmark]: Toolchain (without parser) took 6931.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 194.0 MB). Free memory was 952.7 MB in the beginning and 1.2 GB in the end (delta: -218.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:54:33,570 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:54:33,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 619.54 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 920.5 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:33,572 INFO L168 Benchmark]: Boogie Preprocessor took 157.55 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 920.5 MB in the beginning and 1.1 GB in the end (delta: -188.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:33,572 INFO L168 Benchmark]: RCFGBuilder took 923.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:33,573 INFO L168 Benchmark]: TraceAbstraction took 5220.82 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 73.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -108.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:54:33,574 INFO L168 Benchmark]: Witness Printer took 5.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:54:33,579 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 619.54 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 920.5 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 157.55 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 920.5 MB in the beginning and 1.1 GB in the end (delta: -188.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 923.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5220.82 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 73.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -108.0 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 5.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 626]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 626. Possible FailurePath: [L627] List a = (List) malloc(sizeof(struct node)); VAL [a={11:0}, malloc(sizeof(struct node))={11:0}] [L628] COND FALSE !(a == 0) VAL [a={11:0}, malloc(sizeof(struct node))={11:0}] [L629] List t; [L630] List p = a; VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}] [L631] COND FALSE !(__VERIFIER_nondet_int()) [L638] COND FALSE !(__VERIFIER_nondet_int()) [L645] p->h = 3 VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}] [L646] p = a VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}] [L647] EXPR p->h VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}, p->h=3] [L647] COND FALSE !(p->h == 1) [L649] EXPR p->h VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}, p->h=3] [L649] COND FALSE !(p->h == 2) [L651] EXPR p->h VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}, p->h=3] [L651] COND FALSE !(p->h != 3) [L653] return 0; VAL [\result=0, a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 25 error locations. UNSAFE Result, 5.1s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 3.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 349 SDtfs, 596 SDslu, 757 SDs, 0 SdLazy, 1010 SolverSat, 99 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 146 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 8760 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 12/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-91b1670 [2018-11-28 22:54:35,916 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 22:54:35,921 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 22:54:35,934 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 22:54:35,934 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 22:54:35,936 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 22:54:35,940 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 22:54:35,943 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 22:54:35,946 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 22:54:35,949 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 22:54:35,951 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 22:54:35,952 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 22:54:35,953 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 22:54:35,956 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 22:54:35,959 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 22:54:35,960 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 22:54:35,961 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 22:54:35,968 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 22:54:35,974 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 22:54:35,976 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 22:54:35,978 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 22:54:35,982 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 22:54:35,987 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 22:54:35,990 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 22:54:35,991 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 22:54:35,992 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 22:54:35,993 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 22:54:35,994 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 22:54:35,998 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 22:54:36,000 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 22:54:36,002 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 22:54:36,003 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 22:54:36,003 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 22:54:36,003 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 22:54:36,006 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 22:54:36,007 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 22:54:36,009 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2018-11-28 22:54:36,035 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 22:54:36,036 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 22:54:36,037 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 22:54:36,037 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 22:54:36,038 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 22:54:36,039 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 22:54:36,040 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 22:54:36,040 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 22:54:36,040 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 22:54:36,040 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 22:54:36,041 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 22:54:36,041 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 22:54:36,041 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 22:54:36,041 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 22:54:36,041 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 22:54:36,043 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 22:54:36,044 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 22:54:36,044 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 22:54:36,044 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 22:54:36,044 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 22:54:36,044 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 22:54:36,045 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 22:54:36,047 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 22:54:36,047 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 22:54:36,047 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 22:54:36,047 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 22:54:36,048 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 22:54:36,048 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 22:54:36,048 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 22:54:36,049 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 22:54:36,049 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 22:54:36,049 INFO L133 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 -> 45292d949331e02d780a7679ac12098a89a953bb [2018-11-28 22:54:36,106 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 22:54:36,123 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 22:54:36,129 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 22:54:36,130 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 22:54:36,131 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 22:54:36,131 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-properties/list_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:36,195 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/049fd2fc6/7552dd00464f4f6791659cf415f94d98/FLAG39ecd03c8 [2018-11-28 22:54:36,712 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 22:54:36,713 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-properties/list_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:36,733 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/049fd2fc6/7552dd00464f4f6791659cf415f94d98/FLAG39ecd03c8 [2018-11-28 22:54:37,019 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/049fd2fc6/7552dd00464f4f6791659cf415f94d98 [2018-11-28 22:54:37,023 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 22:54:37,024 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 22:54:37,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 22:54:37,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 22:54:37,032 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 22:54:37,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:54:37" (1/1) ... [2018-11-28 22:54:37,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a68dabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:37, skipping insertion in model container [2018-11-28 22:54:37,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:54:37" (1/1) ... [2018-11-28 22:54:37,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 22:54:37,093 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 22:54:37,500 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:54:37,521 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 22:54:37,594 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:54:37,730 INFO L195 MainTranslator]: Completed translation [2018-11-28 22:54:37,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:37 WrapperNode [2018-11-28 22:54:37,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 22:54:37,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 22:54:37,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 22:54:37,732 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 22:54:37,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:37" (1/1) ... [2018-11-28 22:54:37,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:37" (1/1) ... [2018-11-28 22:54:37,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:37" (1/1) ... [2018-11-28 22:54:37,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:37" (1/1) ... [2018-11-28 22:54:37,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:37" (1/1) ... [2018-11-28 22:54:37,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:37" (1/1) ... [2018-11-28 22:54:37,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:37" (1/1) ... [2018-11-28 22:54:37,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 22:54:37,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 22:54:37,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 22:54:37,845 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 22:54:37,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:37" (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 [2018-11-28 22:54:37,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 22:54:37,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 22:54:37,923 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-11-28 22:54:37,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 22:54:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-28 22:54:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 22:54:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 22:54:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 22:54:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 22:54:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 22:54:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 22:54:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 22:54:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 22:54:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 22:54:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 22:54:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 22:54:37,928 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 22:54:37,928 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 22:54:37,928 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 22:54:37,928 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 22:54:37,928 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 22:54:37,928 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 22:54:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 22:54:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 22:54:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 22:54:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 22:54:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 22:54:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 22:54:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 22:54:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 22:54:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 22:54:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 22:54:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 22:54:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 22:54:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 22:54:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 22:54:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 22:54:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 22:54:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 22:54:37,935 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 22:54:37,935 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 22:54:37,935 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 22:54:37,937 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 22:54:37,937 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 22:54:37,937 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 22:54:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 22:54:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 22:54:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 22:54:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 22:54:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 22:54:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 22:54:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 22:54:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 22:54:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 22:54:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 22:54:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 22:54:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 22:54:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 22:54:37,941 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 22:54:37,941 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 22:54:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 22:54:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 22:54:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 22:54:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 22:54:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 22:54:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 22:54:37,943 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 22:54:37,945 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 22:54:37,945 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 22:54:37,945 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 22:54:37,946 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-11-28 22:54:37,946 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 22:54:37,946 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 22:54:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 22:54:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 22:54:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 22:54:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 22:54:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 22:54:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 22:54:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 22:54:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 22:54:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 22:54:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 22:54:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 22:54:37,951 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 22:54:37,951 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 22:54:37,952 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 22:54:37,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 22:54:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 22:54:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 22:54:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 22:54:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 22:54:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 22:54:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 22:54:37,954 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 22:54:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 22:54:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 22:54:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 22:54:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 22:54:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 22:54:37,957 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 22:54:37,957 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 22:54:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 22:54:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 22:54:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 22:54:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 22:54:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 22:54:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-11-28 22:54:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 22:54:37,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 22:54:37,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-28 22:54:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-28 22:54:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-28 22:54:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 22:54:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 22:54:37,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 22:54:37,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 22:54:39,110 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 22:54:39,111 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 22:54:39,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:54:39 BoogieIcfgContainer [2018-11-28 22:54:39,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 22:54:39,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 22:54:39,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 22:54:39,117 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 22:54:39,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 10:54:37" (1/3) ... [2018-11-28 22:54:39,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66813eb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:54:39, skipping insertion in model container [2018-11-28 22:54:39,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:37" (2/3) ... [2018-11-28 22:54:39,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66813eb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:54:39, skipping insertion in model container [2018-11-28 22:54:39,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:54:39" (3/3) ... [2018-11-28 22:54:39,120 INFO L112 eAbstractionObserver]: Analyzing ICFG list_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:39,131 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 22:54:39,140 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 25 error locations. [2018-11-28 22:54:39,158 INFO L257 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2018-11-28 22:54:39,187 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 22:54:39,188 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 22:54:39,188 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 22:54:39,188 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 22:54:39,189 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 22:54:39,189 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 22:54:39,189 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 22:54:39,189 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 22:54:39,189 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 22:54:39,208 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2018-11-28 22:54:39,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 22:54:39,219 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:39,220 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:39,223 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION]=== [2018-11-28 22:54:39,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:39,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1817106079, now seen corresponding path program 1 times [2018-11-28 22:54:39,235 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:39,236 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:39,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:39,322 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:39,399 INFO L478 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 [2018-11-28 22:54:39,402 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:39,416 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:39,416 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-11-28 22:54:39,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:39,455 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:39,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:39,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 22:54:39,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:54:39,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:54:39,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:54:39,480 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 4 states. [2018-11-28 22:54:40,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:40,319 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2018-11-28 22:54:40,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:54:40,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-28 22:54:40,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:40,336 INFO L225 Difference]: With dead ends: 75 [2018-11-28 22:54:40,338 INFO L226 Difference]: Without dead ends: 66 [2018-11-28 22:54:40,340 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 22:54:40,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-11-28 22:54:40,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 61. [2018-11-28 22:54:40,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-28 22:54:40,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2018-11-28 22:54:40,386 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 10 [2018-11-28 22:54:40,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:40,386 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2018-11-28 22:54:40,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:54:40,387 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2018-11-28 22:54:40,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 22:54:40,387 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:40,388 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:40,388 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION]=== [2018-11-28 22:54:40,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:40,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1817106080, now seen corresponding path program 1 times [2018-11-28 22:54:40,389 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:40,389 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:40,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:40,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:40,455 INFO L478 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 [2018-11-28 22:54:40,455 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:40,463 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:40,463 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-28 22:54:40,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:40,501 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:40,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:40,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 22:54:40,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:54:40,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:54:40,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:54:40,514 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand 4 states. [2018-11-28 22:54:41,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:41,233 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2018-11-28 22:54:41,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:54:41,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-28 22:54:41,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:41,237 INFO L225 Difference]: With dead ends: 84 [2018-11-28 22:54:41,237 INFO L226 Difference]: Without dead ends: 84 [2018-11-28 22:54:41,239 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 22:54:41,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-11-28 22:54:41,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 75. [2018-11-28 22:54:41,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-11-28 22:54:41,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2018-11-28 22:54:41,248 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 10 [2018-11-28 22:54:41,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:41,249 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2018-11-28 22:54:41,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:54:41,249 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2018-11-28 22:54:41,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 22:54:41,250 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:41,251 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:41,251 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION]=== [2018-11-28 22:54:41,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:41,251 INFO L82 PathProgramCache]: Analyzing trace with hash -2045963699, now seen corresponding path program 1 times [2018-11-28 22:54:41,253 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:41,254 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:41,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:41,325 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:41,387 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-28 22:54:41,394 INFO L478 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 8 treesize of output 7 [2018-11-28 22:54:41,394 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:41,397 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:41,409 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:41,409 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2018-11-28 22:54:41,454 INFO L478 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 13 [2018-11-28 22:54:41,458 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 5 [2018-11-28 22:54:41,459 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:41,471 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:41,473 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:41,473 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:17, output treesize:5 [2018-11-28 22:54:41,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:41,496 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:41,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:41,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 22:54:41,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 22:54:41,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 22:54:41,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-28 22:54:41,502 INFO L87 Difference]: Start difference. First operand 75 states and 83 transitions. Second operand 7 states. [2018-11-28 22:54:42,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:42,311 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2018-11-28 22:54:42,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 22:54:42,315 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-11-28 22:54:42,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:42,316 INFO L225 Difference]: With dead ends: 108 [2018-11-28 22:54:42,316 INFO L226 Difference]: Without dead ends: 108 [2018-11-28 22:54:42,317 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-28 22:54:42,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-11-28 22:54:42,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 78. [2018-11-28 22:54:42,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-11-28 22:54:42,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2018-11-28 22:54:42,326 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 17 [2018-11-28 22:54:42,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:42,326 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2018-11-28 22:54:42,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 22:54:42,327 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2018-11-28 22:54:42,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 22:54:42,328 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:42,329 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:42,329 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION]=== [2018-11-28 22:54:42,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:42,329 INFO L82 PathProgramCache]: Analyzing trace with hash 498009381, now seen corresponding path program 1 times [2018-11-28 22:54:42,331 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:42,331 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:42,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:42,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:42,440 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-28 22:54:42,441 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:42,449 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:42,449 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-11-28 22:54:42,472 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-28 22:54:42,480 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-28 22:54:42,481 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:42,488 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:42,500 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:42,500 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:17 [2018-11-28 22:54:42,623 INFO L478 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 17 [2018-11-28 22:54:42,627 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 5 [2018-11-28 22:54:42,628 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:42,631 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:42,638 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 22:54:42,639 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:26, output treesize:11 [2018-11-28 22:54:42,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:42,693 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:42,697 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:42,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 22:54:42,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 22:54:42,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 22:54:42,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:54:42,698 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 6 states. [2018-11-28 22:54:43,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:43,313 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2018-11-28 22:54:43,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 22:54:43,317 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-11-28 22:54:43,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:43,318 INFO L225 Difference]: With dead ends: 85 [2018-11-28 22:54:43,318 INFO L226 Difference]: Without dead ends: 85 [2018-11-28 22:54:43,319 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-28 22:54:43,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-11-28 22:54:43,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 80. [2018-11-28 22:54:43,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-11-28 22:54:43,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2018-11-28 22:54:43,326 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 17 [2018-11-28 22:54:43,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:43,326 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions. [2018-11-28 22:54:43,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 22:54:43,328 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions. [2018-11-28 22:54:43,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 22:54:43,328 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:43,329 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:43,329 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION]=== [2018-11-28 22:54:43,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:43,330 INFO L82 PathProgramCache]: Analyzing trace with hash 498009382, now seen corresponding path program 1 times [2018-11-28 22:54:43,330 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:43,330 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:43,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:43,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:43,432 INFO L478 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 [2018-11-28 22:54:43,433 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:43,446 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:43,446 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-28 22:54:43,483 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-28 22:54:43,491 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-28 22:54:43,491 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:43,498 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:43,527 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-28 22:54:43,532 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-28 22:54:43,533 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:43,538 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:43,556 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:43,556 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2018-11-28 22:54:43,587 INFO L478 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 15 [2018-11-28 22:54:43,593 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 3 [2018-11-28 22:54:43,593 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:43,599 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:43,616 INFO L478 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 23 treesize of output 19 [2018-11-28 22:54:43,641 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2018-11-28 22:54:43,642 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:43,651 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:43,656 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:43,656 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:41, output treesize:11 [2018-11-28 22:54:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:43,695 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:43,698 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:43,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 22:54:43,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 22:54:43,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 22:54:43,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:54:43,699 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand 6 states. [2018-11-28 22:54:44,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:44,896 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2018-11-28 22:54:44,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 22:54:44,900 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-11-28 22:54:44,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:44,901 INFO L225 Difference]: With dead ends: 101 [2018-11-28 22:54:44,901 INFO L226 Difference]: Without dead ends: 101 [2018-11-28 22:54:44,902 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-11-28 22:54:44,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-11-28 22:54:44,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 71. [2018-11-28 22:54:44,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-11-28 22:54:44,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2018-11-28 22:54:44,915 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 17 [2018-11-28 22:54:44,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:44,917 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2018-11-28 22:54:44,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 22:54:44,917 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2018-11-28 22:54:44,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 22:54:44,918 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:44,918 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:44,919 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION]=== [2018-11-28 22:54:44,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:44,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1681294365, now seen corresponding path program 1 times [2018-11-28 22:54:44,919 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:44,920 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:44,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:45,018 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:45,038 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-28 22:54:45,038 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:45,048 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:45,048 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-11-28 22:54:45,097 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-28 22:54:45,107 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-28 22:54:45,108 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:45,115 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:45,133 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:45,133 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:17 [2018-11-28 22:54:45,179 INFO L478 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 17 [2018-11-28 22:54:45,192 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 5 [2018-11-28 22:54:45,193 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:45,200 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:45,213 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 22:54:45,213 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:26, output treesize:11 [2018-11-28 22:54:45,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:45,233 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:45,236 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:45,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 22:54:45,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 22:54:45,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 22:54:45,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:54:45,237 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand 6 states. [2018-11-28 22:54:45,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:45,821 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2018-11-28 22:54:45,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 22:54:45,822 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-11-28 22:54:45,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:45,823 INFO L225 Difference]: With dead ends: 71 [2018-11-28 22:54:45,824 INFO L226 Difference]: Without dead ends: 71 [2018-11-28 22:54:45,824 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-28 22:54:45,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-11-28 22:54:45,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2018-11-28 22:54:45,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-11-28 22:54:45,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2018-11-28 22:54:45,831 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 18 [2018-11-28 22:54:45,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:45,831 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2018-11-28 22:54:45,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 22:54:45,831 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2018-11-28 22:54:45,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 22:54:45,833 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:45,833 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:45,834 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION]=== [2018-11-28 22:54:45,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:45,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1681294366, now seen corresponding path program 1 times [2018-11-28 22:54:45,835 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:45,835 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:45,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:45,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:45,930 INFO L478 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 [2018-11-28 22:54:45,930 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:45,960 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:45,960 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-28 22:54:45,983 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-28 22:54:45,987 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-28 22:54:45,988 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:45,993 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:46,019 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-28 22:54:46,024 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-28 22:54:46,024 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:46,028 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:46,045 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:46,045 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2018-11-28 22:54:46,069 INFO L478 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 15 [2018-11-28 22:54:46,074 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 3 [2018-11-28 22:54:46,074 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:46,080 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:46,099 INFO L478 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 23 treesize of output 19 [2018-11-28 22:54:46,104 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2018-11-28 22:54:46,105 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:46,108 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:46,114 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:46,115 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:41, output treesize:11 [2018-11-28 22:54:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:46,149 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:46,152 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:46,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 22:54:46,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 22:54:46,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 22:54:46,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:54:46,153 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 6 states. [2018-11-28 22:54:46,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:46,848 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2018-11-28 22:54:46,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 22:54:46,853 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-11-28 22:54:46,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:46,854 INFO L225 Difference]: With dead ends: 88 [2018-11-28 22:54:46,854 INFO L226 Difference]: Without dead ends: 88 [2018-11-28 22:54:46,855 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-11-28 22:54:46,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-11-28 22:54:46,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 58. [2018-11-28 22:54:46,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-11-28 22:54:46,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2018-11-28 22:54:46,860 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 18 [2018-11-28 22:54:46,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:46,860 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2018-11-28 22:54:46,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 22:54:46,860 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2018-11-28 22:54:46,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 22:54:46,861 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:46,861 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:46,864 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION]=== [2018-11-28 22:54:46,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:46,864 INFO L82 PathProgramCache]: Analyzing trace with hash 876328410, now seen corresponding path program 1 times [2018-11-28 22:54:46,865 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:46,866 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:46,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:46,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:46,975 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-28 22:54:46,979 INFO L478 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 8 treesize of output 7 [2018-11-28 22:54:46,980 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:46,986 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:46,992 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:46,993 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2018-11-28 22:54:47,034 INFO L478 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 13 [2018-11-28 22:54:47,037 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 5 [2018-11-28 22:54:47,037 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:47,040 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:47,041 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:47,042 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:17, output treesize:5 [2018-11-28 22:54:47,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:47,051 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:47,053 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:47,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 22:54:47,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 22:54:47,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 22:54:47,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-28 22:54:47,055 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand 7 states. [2018-11-28 22:54:47,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:47,514 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2018-11-28 22:54:47,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 22:54:47,516 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-11-28 22:54:47,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:47,517 INFO L225 Difference]: With dead ends: 83 [2018-11-28 22:54:47,517 INFO L226 Difference]: Without dead ends: 83 [2018-11-28 22:54:47,518 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-28 22:54:47,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-11-28 22:54:47,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 60. [2018-11-28 22:54:47,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-28 22:54:47,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2018-11-28 22:54:47,525 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 19 [2018-11-28 22:54:47,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:47,525 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2018-11-28 22:54:47,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 22:54:47,525 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2018-11-28 22:54:47,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 22:54:47,526 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:47,526 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:47,527 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION]=== [2018-11-28 22:54:47,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:47,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1394751826, now seen corresponding path program 1 times [2018-11-28 22:54:47,529 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:47,529 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:47,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 22:54:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 22:54:47,691 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 22:54:47,691 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:47,728 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-11-28 22:54:47,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 10:54:47 BoogieIcfgContainer [2018-11-28 22:54:47,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 22:54:47,752 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 22:54:47,752 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 22:54:47,752 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 22:54:47,753 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:54:39" (3/4) ... [2018-11-28 22:54:47,760 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 22:54:47,760 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 22:54:47,761 INFO L168 Benchmark]: Toolchain (without parser) took 10737.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 205.0 MB). Free memory was 954.0 MB in the beginning and 1.0 GB in the end (delta: -95.2 MB). Peak memory consumption was 109.8 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:47,765 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:54:47,765 INFO L168 Benchmark]: CACSL2BoogieTranslator took 704.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 954.0 MB in the beginning and 1.1 GB in the end (delta: -166.7 MB). Peak memory consumption was 31.9 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:47,766 INFO L168 Benchmark]: Boogie Preprocessor took 112.16 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. [2018-11-28 22:54:47,767 INFO L168 Benchmark]: RCFGBuilder took 1267.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 58.9 MB). Peak memory consumption was 58.9 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:47,770 INFO L168 Benchmark]: TraceAbstraction took 8638.47 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.0 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 12.6 MB). Peak memory consumption was 77.6 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:47,771 INFO L168 Benchmark]: Witness Printer took 8.33 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:54:47,780 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 704.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 954.0 MB in the beginning and 1.1 GB in the end (delta: -166.7 MB). Peak memory consumption was 31.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 112.16 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 1267.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 58.9 MB). Peak memory consumption was 58.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8638.47 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.0 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 12.6 MB). Peak memory consumption was 77.6 MB. Max. memory is 11.5 GB. * Witness Printer took 8.33 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 626]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 626. Possible FailurePath: [L627] List a = (List) malloc(sizeof(struct node)); VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}] [L628] COND FALSE !(a == 0) VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}] [L629] List t; [L630] List p = a; VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L631] COND FALSE !(__VERIFIER_nondet_int()) [L638] COND FALSE !(__VERIFIER_nondet_int()) [L645] p->h = 3 VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L646] p = a VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L647] EXPR p->h VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, p->h=3] [L647] COND FALSE !(p->h == 1) [L649] EXPR p->h VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, p->h=3] [L649] COND FALSE !(p->h == 2) [L651] EXPR p->h VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, p->h=3] [L651] COND FALSE !(p->h != 3) [L653] return 0; VAL [\result=0, a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 25 error locations. UNSAFE Result, 8.5s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 5.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 310 SDtfs, 690 SDslu, 606 SDs, 0 SdLazy, 974 SolverSat, 99 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 134 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 8828 SizeOfPredicates, 50 NumberOfNonLiveVariables, 476 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...