./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/sll2n_remove_all.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2n_remove_all.i -s /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer --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 a3189d7d4e71631c5441bd903e5049703e07b8be ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2n_remove_all.i -s /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer --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 a3189d7d4e71631c5441bd903e5049703e07b8be ................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: Sort C_DOUBLE not declared --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 21:43:51,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:43:51,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:43:51,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:43:51,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:43:51,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:43:51,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:43:51,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:43:51,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:43:51,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:43:51,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:43:51,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:43:51,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:43:51,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:43:51,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:43:51,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:43:51,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:43:51,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:43:51,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:43:51,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:43:51,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:43:51,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:43:51,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:43:51,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:43:51,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:43:51,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:43:51,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:43:51,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:43:51,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:43:51,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:43:51,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:43:51,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:43:51,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:43:51,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:43:51,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:43:51,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:43:51,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:43:51,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:43:51,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:43:51,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:43:51,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:43:51,416 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-15 21:43:51,428 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:43:51,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:43:51,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:43:51,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:43:51,430 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:43:51,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:43:51,431 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:43:51,431 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 21:43:51,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:43:51,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:43:51,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:43:51,432 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-15 21:43:51,432 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-15 21:43:51,432 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-15 21:43:51,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:43:51,432 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:43:51,433 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:43:51,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:43:51,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:43:51,433 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:43:51,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:43:51,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:43:51,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:43:51,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:43:51,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 21:43:51,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 21:43:51,435 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer 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 -> a3189d7d4e71631c5441bd903e5049703e07b8be [2019-11-15 21:43:51,460 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:43:51,469 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:43:51,479 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:43:51,480 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:43:51,480 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:43:51,481 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/../../sv-benchmarks/c/list-simple/sll2n_remove_all.i [2019-11-15 21:43:51,540 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/data/1ef1682c1/2ecff9bbcb0645d8be3ee30a9ae0ccdc/FLAGab4ad8443 [2019-11-15 21:43:51,922 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:43:51,923 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/sv-benchmarks/c/list-simple/sll2n_remove_all.i [2019-11-15 21:43:51,937 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/data/1ef1682c1/2ecff9bbcb0645d8be3ee30a9ae0ccdc/FLAGab4ad8443 [2019-11-15 21:43:52,259 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/data/1ef1682c1/2ecff9bbcb0645d8be3ee30a9ae0ccdc [2019-11-15 21:43:52,262 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:43:52,263 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-15 21:43:52,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:43:52,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:43:52,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:43:52,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:43:52" (1/1) ... [2019-11-15 21:43:52,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c2e9c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:43:52, skipping insertion in model container [2019-11-15 21:43:52,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:43:52" (1/1) ... [2019-11-15 21:43:52,279 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:43:52,326 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:43:52,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:43:52,648 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:43:52,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:43:52,745 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:43:52,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:43:52 WrapperNode [2019-11-15 21:43:52,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:43:52,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:43:52,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:43:52,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:43:52,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:43:52" (1/1) ... [2019-11-15 21:43:52,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:43:52" (1/1) ... [2019-11-15 21:43:52,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:43:52" (1/1) ... [2019-11-15 21:43:52,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:43:52" (1/1) ... [2019-11-15 21:43:52,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:43:52" (1/1) ... [2019-11-15 21:43:52,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:43:52" (1/1) ... [2019-11-15 21:43:52,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:43:52" (1/1) ... [2019-11-15 21:43:52,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:43:52,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:43:52,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:43:52,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:43:52,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:43:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/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 [2019-11-15 21:43:52,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-15 21:43:52,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:43:52,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-15 21:43:52,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-15 21:43:52,887 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-15 21:43:52,887 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-15 21:43:52,888 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-11-15 21:43:52,888 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_remove_first [2019-11-15 21:43:52,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-15 21:43:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-15 21:43:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-15 21:43:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-15 21:43:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-15 21:43:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-15 21:43:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-15 21:43:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-15 21:43:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-15 21:43:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-15 21:43:52,890 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-15 21:43:52,890 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-15 21:43:52,890 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-15 21:43:52,890 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-15 21:43:52,890 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-15 21:43:52,890 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-15 21:43:52,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-15 21:43:52,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-15 21:43:52,891 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-15 21:43:52,891 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-15 21:43:52,891 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-15 21:43:52,891 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-15 21:43:52,892 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-15 21:43:52,892 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-15 21:43:52,892 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-15 21:43:52,892 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-15 21:43:52,892 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-15 21:43:52,892 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-15 21:43:52,892 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-15 21:43:52,893 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-15 21:43:52,893 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-15 21:43:52,893 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-15 21:43:52,893 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-15 21:43:52,893 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-15 21:43:52,893 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-15 21:43:52,893 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-15 21:43:52,894 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-15 21:43:52,894 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-15 21:43:52,894 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-15 21:43:52,894 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-15 21:43:52,894 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-15 21:43:52,894 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-15 21:43:52,894 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-15 21:43:52,894 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-15 21:43:52,895 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-15 21:43:52,895 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-15 21:43:52,895 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-15 21:43:52,895 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-15 21:43:52,895 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-15 21:43:52,895 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-15 21:43:52,895 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-15 21:43:52,895 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-15 21:43:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-15 21:43:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-15 21:43:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-15 21:43:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-15 21:43:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-15 21:43:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-15 21:43:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-15 21:43:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-15 21:43:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-15 21:43:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-15 21:43:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-15 21:43:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-15 21:43:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-15 21:43:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-15 21:43:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-15 21:43:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-15 21:43:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-15 21:43:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-15 21:43:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-15 21:43:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-15 21:43:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-15 21:43:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-15 21:43:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-15 21:43:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-15 21:43:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-15 21:43:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-15 21:43:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-15 21:43:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-15 21:43:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-15 21:43:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-15 21:43:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-15 21:43:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-15 21:43:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-15 21:43:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-15 21:43:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-15 21:43:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-15 21:43:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-15 21:43:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-15 21:43:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-15 21:43:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-15 21:43:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-15 21:43:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-15 21:43:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-15 21:43:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-15 21:43:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-15 21:43:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-15 21:43:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-15 21:43:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-15 21:43:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-15 21:43:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-15 21:43:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-15 21:43:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-15 21:43:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-15 21:43:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-15 21:43:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-15 21:43:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-15 21:43:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-15 21:43:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-15 21:43:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-15 21:43:52,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 21:43:52,904 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-11-15 21:43:52,904 INFO L130 BoogieDeclarations]: Found specification of procedure sll_remove_first [2019-11-15 21:43:52,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-15 21:43:52,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 21:43:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-15 21:43:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 21:43:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-15 21:43:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-15 21:43:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:43:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 21:43:53,269 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-15 21:43:53,467 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:43:53,468 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-15 21:43:53,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:43:53 BoogieIcfgContainer [2019-11-15 21:43:53,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:43:53,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:43:53,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:43:53,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:43:53,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:43:52" (1/3) ... [2019-11-15 21:43:53,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57459549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:43:53, skipping insertion in model container [2019-11-15 21:43:53,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:43:52" (2/3) ... [2019-11-15 21:43:53,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57459549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:43:53, skipping insertion in model container [2019-11-15 21:43:53,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:43:53" (3/3) ... [2019-11-15 21:43:53,479 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_remove_all.i [2019-11-15 21:43:53,488 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:43:53,497 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2019-11-15 21:43:53,515 INFO L249 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2019-11-15 21:43:53,540 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:43:53,540 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-15 21:43:53,540 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:43:53,540 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:43:53,540 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:43:53,540 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:43:53,541 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:43:53,541 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:43:53,559 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2019-11-15 21:43:53,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 21:43:53,571 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:43:53,572 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:43:53,574 INFO L410 AbstractCegarLoop]: === Iteration 1 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-11-15 21:43:53,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:43:53,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1645367829, now seen corresponding path program 1 times [2019-11-15 21:43:53,586 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:43:53,586 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987755150] [2019-11-15 21:43:53,587 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:43:53,587 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:43:53,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:43:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:53,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:43:53,787 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987755150] [2019-11-15 21:43:53,788 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:43:53,788 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 21:43:53,788 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385217883] [2019-11-15 21:43:53,792 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 21:43:53,792 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:43:53,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 21:43:53,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:43:53,807 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 4 states. [2019-11-15 21:43:54,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:43:54,028 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2019-11-15 21:43:54,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 21:43:54,030 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-15 21:43:54,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:43:54,040 INFO L225 Difference]: With dead ends: 72 [2019-11-15 21:43:54,041 INFO L226 Difference]: Without dead ends: 65 [2019-11-15 21:43:54,044 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:43:54,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-11-15 21:43:54,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2019-11-15 21:43:54,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-15 21:43:54,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2019-11-15 21:43:54,095 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 13 [2019-11-15 21:43:54,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:43:54,095 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2019-11-15 21:43:54,095 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 21:43:54,095 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2019-11-15 21:43:54,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 21:43:54,096 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:43:54,096 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:43:54,097 INFO L410 AbstractCegarLoop]: === Iteration 2 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-11-15 21:43:54,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:43:54,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1645367828, now seen corresponding path program 1 times [2019-11-15 21:43:54,097 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:43:54,098 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807393437] [2019-11-15 21:43:54,098 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:43:54,098 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:43:54,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:43:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:43:54,225 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807393437] [2019-11-15 21:43:54,225 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:43:54,225 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 21:43:54,225 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179574632] [2019-11-15 21:43:54,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 21:43:54,227 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:43:54,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 21:43:54,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:43:54,227 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 4 states. [2019-11-15 21:43:54,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:43:54,470 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2019-11-15 21:43:54,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 21:43:54,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-15 21:43:54,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:43:54,472 INFO L225 Difference]: With dead ends: 63 [2019-11-15 21:43:54,472 INFO L226 Difference]: Without dead ends: 63 [2019-11-15 21:43:54,473 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:43:54,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-15 21:43:54,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2019-11-15 21:43:54,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-15 21:43:54,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2019-11-15 21:43:54,482 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 13 [2019-11-15 21:43:54,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:43:54,482 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2019-11-15 21:43:54,482 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 21:43:54,483 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2019-11-15 21:43:54,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 21:43:54,484 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:43:54,484 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:43:54,485 INFO L410 AbstractCegarLoop]: === Iteration 3 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-11-15 21:43:54,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:43:54,485 INFO L82 PathProgramCache]: Analyzing trace with hash -247912000, now seen corresponding path program 1 times [2019-11-15 21:43:54,485 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:43:54,486 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477458772] [2019-11-15 21:43:54,486 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:43:54,486 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:43:54,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:43:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:54,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:43:54,584 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477458772] [2019-11-15 21:43:54,584 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:43:54,584 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 21:43:54,585 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375397788] [2019-11-15 21:43:54,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 21:43:54,585 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:43:54,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 21:43:54,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 21:43:54,586 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 6 states. [2019-11-15 21:43:54,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:43:54,829 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2019-11-15 21:43:54,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 21:43:54,830 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-11-15 21:43:54,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:43:54,833 INFO L225 Difference]: With dead ends: 66 [2019-11-15 21:43:54,833 INFO L226 Difference]: Without dead ends: 66 [2019-11-15 21:43:54,833 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:43:54,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-15 21:43:54,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2019-11-15 21:43:54,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-15 21:43:54,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2019-11-15 21:43:54,840 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 15 [2019-11-15 21:43:54,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:43:54,840 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2019-11-15 21:43:54,840 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 21:43:54,840 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2019-11-15 21:43:54,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-15 21:43:54,841 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:43:54,841 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:43:54,842 INFO L410 AbstractCegarLoop]: === Iteration 4 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-11-15 21:43:54,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:43:54,842 INFO L82 PathProgramCache]: Analyzing trace with hash -2020128309, now seen corresponding path program 1 times [2019-11-15 21:43:54,842 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:43:54,842 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539089684] [2019-11-15 21:43:54,842 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:43:54,843 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:43:54,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:43:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:54,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:43:54,955 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539089684] [2019-11-15 21:43:54,955 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:43:54,955 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 21:43:54,955 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026763043] [2019-11-15 21:43:54,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 21:43:54,956 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:43:54,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 21:43:54,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-15 21:43:54,956 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 7 states. [2019-11-15 21:43:55,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:43:55,261 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2019-11-15 21:43:55,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 21:43:55,263 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-11-15 21:43:55,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:43:55,264 INFO L225 Difference]: With dead ends: 70 [2019-11-15 21:43:55,264 INFO L226 Difference]: Without dead ends: 67 [2019-11-15 21:43:55,264 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-15 21:43:55,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-11-15 21:43:55,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2019-11-15 21:43:55,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-15 21:43:55,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2019-11-15 21:43:55,278 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 17 [2019-11-15 21:43:55,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:43:55,278 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2019-11-15 21:43:55,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 21:43:55,279 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2019-11-15 21:43:55,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-15 21:43:55,279 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:43:55,279 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:43:55,280 INFO L410 AbstractCegarLoop]: === Iteration 5 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-11-15 21:43:55,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:43:55,281 INFO L82 PathProgramCache]: Analyzing trace with hash -278961335, now seen corresponding path program 1 times [2019-11-15 21:43:55,281 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:43:55,281 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375702751] [2019-11-15 21:43:55,281 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:43:55,282 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:43:55,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:43:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:55,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:43:55,430 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375702751] [2019-11-15 21:43:55,430 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:43:55,430 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 21:43:55,430 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367543243] [2019-11-15 21:43:55,431 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 21:43:55,431 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:43:55,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 21:43:55,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:43:55,432 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 8 states. [2019-11-15 21:43:55,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:43:55,748 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2019-11-15 21:43:55,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 21:43:55,750 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-11-15 21:43:55,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:43:55,751 INFO L225 Difference]: With dead ends: 60 [2019-11-15 21:43:55,751 INFO L226 Difference]: Without dead ends: 60 [2019-11-15 21:43:55,751 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-15 21:43:55,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-15 21:43:55,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2019-11-15 21:43:55,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-15 21:43:55,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2019-11-15 21:43:55,757 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 19 [2019-11-15 21:43:55,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:43:55,757 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2019-11-15 21:43:55,757 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 21:43:55,757 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2019-11-15 21:43:55,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-15 21:43:55,758 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:43:55,758 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:43:55,758 INFO L410 AbstractCegarLoop]: === Iteration 6 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-11-15 21:43:55,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:43:55,758 INFO L82 PathProgramCache]: Analyzing trace with hash -278961334, now seen corresponding path program 1 times [2019-11-15 21:43:55,759 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:43:55,759 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704457442] [2019-11-15 21:43:55,759 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:43:55,759 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:43:55,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:43:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:55,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:43:55,918 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704457442] [2019-11-15 21:43:55,918 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:43:55,918 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 21:43:55,919 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520767977] [2019-11-15 21:43:55,919 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 21:43:55,919 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:43:55,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 21:43:55,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:43:55,919 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 8 states. [2019-11-15 21:43:56,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:43:56,186 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2019-11-15 21:43:56,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 21:43:56,186 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-11-15 21:43:56,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:43:56,188 INFO L225 Difference]: With dead ends: 59 [2019-11-15 21:43:56,188 INFO L226 Difference]: Without dead ends: 59 [2019-11-15 21:43:56,188 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-15 21:43:56,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-15 21:43:56,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2019-11-15 21:43:56,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-15 21:43:56,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2019-11-15 21:43:56,194 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 19 [2019-11-15 21:43:56,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:43:56,194 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2019-11-15 21:43:56,194 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 21:43:56,194 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2019-11-15 21:43:56,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-15 21:43:56,195 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:43:56,195 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:43:56,195 INFO L410 AbstractCegarLoop]: === Iteration 7 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-11-15 21:43:56,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:43:56,195 INFO L82 PathProgramCache]: Analyzing trace with hash 312386304, now seen corresponding path program 1 times [2019-11-15 21:43:56,196 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:43:56,196 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651778716] [2019-11-15 21:43:56,196 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:43:56,196 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:43:56,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:43:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:56,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:43:56,357 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651778716] [2019-11-15 21:43:56,357 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083444253] [2019-11-15 21:43:56,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:43:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:56,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 21:43:56,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:43:56,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:43:56,545 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:43:56,545 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 9 [2019-11-15 21:43:56,545 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596834803] [2019-11-15 21:43:56,546 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-15 21:43:56,546 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:43:56,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-15 21:43:56,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-15 21:43:56,547 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 9 states. [2019-11-15 21:43:56,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:43:56,784 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2019-11-15 21:43:56,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 21:43:56,784 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2019-11-15 21:43:56,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:43:56,785 INFO L225 Difference]: With dead ends: 72 [2019-11-15 21:43:56,786 INFO L226 Difference]: Without dead ends: 69 [2019-11-15 21:43:56,786 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-11-15 21:43:56,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-11-15 21:43:56,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 64. [2019-11-15 21:43:56,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-11-15 21:43:56,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2019-11-15 21:43:56,791 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 30 [2019-11-15 21:43:56,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:43:56,792 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2019-11-15 21:43:56,792 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-15 21:43:56,792 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2019-11-15 21:43:56,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-15 21:43:56,794 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:43:56,794 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:43:56,994 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:43:56,995 INFO L410 AbstractCegarLoop]: === Iteration 8 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-11-15 21:43:56,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:43:56,995 INFO L82 PathProgramCache]: Analyzing trace with hash -923097109, now seen corresponding path program 2 times [2019-11-15 21:43:56,995 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:43:56,996 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994130192] [2019-11-15 21:43:56,996 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:43:56,996 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:43:56,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:43:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:57,670 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 21:43:57,671 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994130192] [2019-11-15 21:43:57,671 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747717093] [2019-11-15 21:43:57,671 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:43:57,810 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 21:43:57,811 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:43:57,812 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-15 21:43:57,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:43:57,868 INFO L375 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 [2019-11-15 21:43:57,868 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:43:57,898 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:43:57,899 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:43:57,899 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-15 21:43:57,915 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-11-15 21:43:57,916 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:43:57,924 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:43:57,924 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:43:57,925 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:3 [2019-11-15 21:43:58,015 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 21:43:58,016 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 21:43:58,034 INFO L341 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-15 21:43:58,034 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2019-11-15 21:43:58,035 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:43:58,045 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:43:58,046 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-15 21:43:58,046 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:29 [2019-11-15 21:43:58,155 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-15 21:43:58,155 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:43:58,155 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2019-11-15 21:43:58,155 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934279702] [2019-11-15 21:43:58,156 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-15 21:43:58,156 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:43:58,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-15 21:43:58,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2019-11-15 21:43:58,157 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 18 states. [2019-11-15 21:43:58,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:43:58,907 INFO L93 Difference]: Finished difference Result 102 states and 108 transitions. [2019-11-15 21:43:58,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-15 21:43:58,907 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 43 [2019-11-15 21:43:58,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:43:58,909 INFO L225 Difference]: With dead ends: 102 [2019-11-15 21:43:58,909 INFO L226 Difference]: Without dead ends: 102 [2019-11-15 21:43:58,909 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2019-11-15 21:43:58,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-11-15 21:43:58,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 90. [2019-11-15 21:43:58,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-11-15 21:43:58,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 104 transitions. [2019-11-15 21:43:58,919 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 104 transitions. Word has length 43 [2019-11-15 21:43:58,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:43:58,920 INFO L462 AbstractCegarLoop]: Abstraction has 90 states and 104 transitions. [2019-11-15 21:43:58,920 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-15 21:43:58,920 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 104 transitions. [2019-11-15 21:43:58,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-15 21:43:58,921 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:43:58,922 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:43:59,128 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:43:59,128 INFO L410 AbstractCegarLoop]: === Iteration 9 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-11-15 21:43:59,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:43:59,129 INFO L82 PathProgramCache]: Analyzing trace with hash -923097110, now seen corresponding path program 1 times [2019-11-15 21:43:59,129 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:43:59,129 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543111004] [2019-11-15 21:43:59,129 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:43:59,129 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:43:59,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:43:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:59,756 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 21:43:59,757 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543111004] [2019-11-15 21:43:59,757 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769427359] [2019-11-15 21:43:59,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:43:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:43:59,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-15 21:43:59,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:43:59,918 INFO L375 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 [2019-11-15 21:43:59,918 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:43:59,922 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:43:59,922 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:43:59,922 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-15 21:43:59,930 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-11-15 21:43:59,930 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:43:59,933 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:43:59,934 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:43:59,934 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:3 [2019-11-15 21:44:00,138 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 21:44:00,139 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 21:44:00,148 INFO L341 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-15 21:44:00,148 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2019-11-15 21:44:00,148 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:44:00,157 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:44:00,157 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-15 21:44:00,157 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:26 [2019-11-15 21:44:00,261 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 21:44:00,261 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:44:00,261 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 22 [2019-11-15 21:44:00,262 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354249083] [2019-11-15 21:44:00,262 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-15 21:44:00,262 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:44:00,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-15 21:44:00,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2019-11-15 21:44:00,263 INFO L87 Difference]: Start difference. First operand 90 states and 104 transitions. Second operand 23 states. [2019-11-15 21:44:01,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:44:01,134 INFO L93 Difference]: Finished difference Result 105 states and 120 transitions. [2019-11-15 21:44:01,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-15 21:44:01,135 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 43 [2019-11-15 21:44:01,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:44:01,136 INFO L225 Difference]: With dead ends: 105 [2019-11-15 21:44:01,136 INFO L226 Difference]: Without dead ends: 105 [2019-11-15 21:44:01,137 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2019-11-15 21:44:01,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-11-15 21:44:01,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 92. [2019-11-15 21:44:01,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-11-15 21:44:01,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions. [2019-11-15 21:44:01,144 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 43 [2019-11-15 21:44:01,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:44:01,145 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions. [2019-11-15 21:44:01,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-15 21:44:01,145 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions. [2019-11-15 21:44:01,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-15 21:44:01,148 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:44:01,148 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:44:01,350 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:44:01,351 INFO L410 AbstractCegarLoop]: === Iteration 10 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-11-15 21:44:01,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:44:01,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1448760713, now seen corresponding path program 1 times [2019-11-15 21:44:01,352 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:44:01,352 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323032311] [2019-11-15 21:44:01,352 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:44:01,352 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:44:01,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:44:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:01,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:01,582 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-15 21:44:01,582 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323032311] [2019-11-15 21:44:01,582 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:44:01,583 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-11-15 21:44:01,583 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913219439] [2019-11-15 21:44:01,583 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-15 21:44:01,583 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:44:01,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-15 21:44:01,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-11-15 21:44:01,584 INFO L87 Difference]: Start difference. First operand 92 states and 106 transitions. Second operand 15 states. [2019-11-15 21:44:02,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:44:02,319 INFO L93 Difference]: Finished difference Result 114 states and 133 transitions. [2019-11-15 21:44:02,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-15 21:44:02,319 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2019-11-15 21:44:02,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:44:02,321 INFO L225 Difference]: With dead ends: 114 [2019-11-15 21:44:02,321 INFO L226 Difference]: Without dead ends: 114 [2019-11-15 21:44:02,321 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-11-15 21:44:02,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-11-15 21:44:02,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 97. [2019-11-15 21:44:02,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-11-15 21:44:02,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 116 transitions. [2019-11-15 21:44:02,329 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 116 transitions. Word has length 44 [2019-11-15 21:44:02,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:44:02,329 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 116 transitions. [2019-11-15 21:44:02,329 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-15 21:44:02,330 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 116 transitions. [2019-11-15 21:44:02,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-15 21:44:02,331 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:44:02,331 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:44:02,331 INFO L410 AbstractCegarLoop]: === Iteration 11 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-11-15 21:44:02,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:44:02,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1448760714, now seen corresponding path program 1 times [2019-11-15 21:44:02,332 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:44:02,332 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556756989] [2019-11-15 21:44:02,332 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:44:02,332 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:44:02,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:44:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-15 21:44:02,659 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556756989] [2019-11-15 21:44:02,659 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:44:02,659 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-11-15 21:44:02,659 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137500778] [2019-11-15 21:44:02,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-15 21:44:02,660 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:44:02,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-15 21:44:02,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2019-11-15 21:44:02,661 INFO L87 Difference]: Start difference. First operand 97 states and 116 transitions. Second operand 16 states. [2019-11-15 21:44:03,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:44:03,335 INFO L93 Difference]: Finished difference Result 117 states and 136 transitions. [2019-11-15 21:44:03,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-15 21:44:03,337 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2019-11-15 21:44:03,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:44:03,338 INFO L225 Difference]: With dead ends: 117 [2019-11-15 21:44:03,338 INFO L226 Difference]: Without dead ends: 117 [2019-11-15 21:44:03,339 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2019-11-15 21:44:03,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2019-11-15 21:44:03,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 97. [2019-11-15 21:44:03,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-11-15 21:44:03,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 114 transitions. [2019-11-15 21:44:03,359 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 114 transitions. Word has length 44 [2019-11-15 21:44:03,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:44:03,360 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 114 transitions. [2019-11-15 21:44:03,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-15 21:44:03,360 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 114 transitions. [2019-11-15 21:44:03,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-15 21:44:03,361 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:44:03,361 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:44:03,362 INFO L410 AbstractCegarLoop]: === Iteration 12 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-11-15 21:44:03,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:44:03,362 INFO L82 PathProgramCache]: Analyzing trace with hash -95902865, now seen corresponding path program 1 times [2019-11-15 21:44:03,362 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:44:03,362 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499747971] [2019-11-15 21:44:03,363 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:44:03,363 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:44:03,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:44:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:03,596 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-15 21:44:03,596 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499747971] [2019-11-15 21:44:03,596 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:44:03,597 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-11-15 21:44:03,597 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709472511] [2019-11-15 21:44:03,597 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-15 21:44:03,597 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:44:03,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-15 21:44:03,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-11-15 21:44:03,598 INFO L87 Difference]: Start difference. First operand 97 states and 114 transitions. Second operand 15 states. [2019-11-15 21:44:04,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:44:04,288 INFO L93 Difference]: Finished difference Result 116 states and 134 transitions. [2019-11-15 21:44:04,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-15 21:44:04,290 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2019-11-15 21:44:04,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:44:04,291 INFO L225 Difference]: With dead ends: 116 [2019-11-15 21:44:04,291 INFO L226 Difference]: Without dead ends: 116 [2019-11-15 21:44:04,291 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2019-11-15 21:44:04,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-11-15 21:44:04,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 103. [2019-11-15 21:44:04,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-11-15 21:44:04,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2019-11-15 21:44:04,297 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 47 [2019-11-15 21:44:04,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:44:04,297 INFO L462 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2019-11-15 21:44:04,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-15 21:44:04,298 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2019-11-15 21:44:04,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-11-15 21:44:04,298 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:44:04,299 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:44:04,299 INFO L410 AbstractCegarLoop]: === Iteration 13 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-11-15 21:44:04,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:44:04,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1321978602, now seen corresponding path program 1 times [2019-11-15 21:44:04,299 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:44:04,299 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197642732] [2019-11-15 21:44:04,299 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:44:04,300 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:44:04,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:44:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:04,550 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-15 21:44:04,551 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197642732] [2019-11-15 21:44:04,551 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:44:04,551 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-11-15 21:44:04,551 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599682598] [2019-11-15 21:44:04,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-15 21:44:04,554 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:44:04,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-15 21:44:04,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-11-15 21:44:04,555 INFO L87 Difference]: Start difference. First operand 103 states and 121 transitions. Second operand 15 states. [2019-11-15 21:44:05,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:44:05,130 INFO L93 Difference]: Finished difference Result 115 states and 132 transitions. [2019-11-15 21:44:05,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-15 21:44:05,130 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2019-11-15 21:44:05,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:44:05,131 INFO L225 Difference]: With dead ends: 115 [2019-11-15 21:44:05,131 INFO L226 Difference]: Without dead ends: 115 [2019-11-15 21:44:05,132 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2019-11-15 21:44:05,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2019-11-15 21:44:05,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105. [2019-11-15 21:44:05,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-11-15 21:44:05,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2019-11-15 21:44:05,137 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 48 [2019-11-15 21:44:05,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:44:05,137 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2019-11-15 21:44:05,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-15 21:44:05,137 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2019-11-15 21:44:05,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-11-15 21:44:05,138 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:44:05,138 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:44:05,138 INFO L410 AbstractCegarLoop]: === Iteration 14 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-11-15 21:44:05,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:44:05,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1968336175, now seen corresponding path program 1 times [2019-11-15 21:44:05,139 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:44:05,139 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076586502] [2019-11-15 21:44:05,139 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:44:05,139 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:44:05,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:44:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:05,229 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-15 21:44:05,229 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076586502] [2019-11-15 21:44:05,229 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:44:05,230 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 21:44:05,230 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114539903] [2019-11-15 21:44:05,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 21:44:05,230 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:44:05,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 21:44:05,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-15 21:44:05,231 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 7 states. [2019-11-15 21:44:05,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:44:05,471 INFO L93 Difference]: Finished difference Result 104 states and 121 transitions. [2019-11-15 21:44:05,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 21:44:05,471 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2019-11-15 21:44:05,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:44:05,472 INFO L225 Difference]: With dead ends: 104 [2019-11-15 21:44:05,472 INFO L226 Difference]: Without dead ends: 104 [2019-11-15 21:44:05,473 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2019-11-15 21:44:05,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-11-15 21:44:05,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2019-11-15 21:44:05,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-11-15 21:44:05,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 121 transitions. [2019-11-15 21:44:05,477 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 121 transitions. Word has length 49 [2019-11-15 21:44:05,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:44:05,477 INFO L462 AbstractCegarLoop]: Abstraction has 104 states and 121 transitions. [2019-11-15 21:44:05,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 21:44:05,478 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 121 transitions. [2019-11-15 21:44:05,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-15 21:44:05,479 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:44:05,479 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:44:05,479 INFO L410 AbstractCegarLoop]: === Iteration 15 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-11-15 21:44:05,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:44:05,480 INFO L82 PathProgramCache]: Analyzing trace with hash -888879155, now seen corresponding path program 1 times [2019-11-15 21:44:05,480 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:44:05,480 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812600398] [2019-11-15 21:44:05,480 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:44:05,480 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:44:05,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:44:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:06,008 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 21:44:06,008 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812600398] [2019-11-15 21:44:06,009 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64714606] [2019-11-15 21:44:06,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:44:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:06,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 21:44:06,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:44:06,297 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 21:44:06,298 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2019-11-15 21:44:06,299 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:44:06,305 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:44:06,305 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 21:44:06,306 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:16 [2019-11-15 21:44:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-15 21:44:06,362 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 21:44:06,362 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [21] total 27 [2019-11-15 21:44:06,362 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117539499] [2019-11-15 21:44:06,363 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 21:44:06,363 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:44:06,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 21:44:06,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2019-11-15 21:44:06,364 INFO L87 Difference]: Start difference. First operand 104 states and 121 transitions. Second operand 8 states. [2019-11-15 21:44:06,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:44:06,579 INFO L93 Difference]: Finished difference Result 103 states and 119 transitions. [2019-11-15 21:44:06,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 21:44:06,579 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2019-11-15 21:44:06,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:44:06,580 INFO L225 Difference]: With dead ends: 103 [2019-11-15 21:44:06,580 INFO L226 Difference]: Without dead ends: 103 [2019-11-15 21:44:06,581 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2019-11-15 21:44:06,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-15 21:44:06,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2019-11-15 21:44:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-11-15 21:44:06,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2019-11-15 21:44:06,585 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 50 [2019-11-15 21:44:06,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:44:06,585 INFO L462 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2019-11-15 21:44:06,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 21:44:06,585 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2019-11-15 21:44:06,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-15 21:44:06,586 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:44:06,586 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:44:06,789 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:44:06,790 INFO L410 AbstractCegarLoop]: === Iteration 16 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-11-15 21:44:06,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:44:06,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1837440975, now seen corresponding path program 1 times [2019-11-15 21:44:06,790 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:44:06,790 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042913491] [2019-11-15 21:44:06,790 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:44:06,790 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:44:06,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:44:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:06,893 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-15 21:44:06,893 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042913491] [2019-11-15 21:44:06,894 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:44:06,894 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 21:44:06,894 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757609858] [2019-11-15 21:44:06,894 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 21:44:06,894 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:44:06,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 21:44:06,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:44:06,895 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand 8 states. [2019-11-15 21:44:07,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:44:07,182 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2019-11-15 21:44:07,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 21:44:07,182 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2019-11-15 21:44:07,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:44:07,183 INFO L225 Difference]: With dead ends: 103 [2019-11-15 21:44:07,183 INFO L226 Difference]: Without dead ends: 103 [2019-11-15 21:44:07,183 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-11-15 21:44:07,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-15 21:44:07,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2019-11-15 21:44:07,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-11-15 21:44:07,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2019-11-15 21:44:07,187 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 55 [2019-11-15 21:44:07,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:44:07,188 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2019-11-15 21:44:07,188 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 21:44:07,188 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2019-11-15 21:44:07,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-15 21:44:07,188 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:44:07,189 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:44:07,189 INFO L410 AbstractCegarLoop]: === Iteration 17 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-11-15 21:44:07,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:44:07,189 INFO L82 PathProgramCache]: Analyzing trace with hash 366819552, now seen corresponding path program 3 times [2019-11-15 21:44:07,189 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:44:07,189 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295333812] [2019-11-15 21:44:07,190 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:44:07,190 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:44:07,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:44:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:07,324 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-15 21:44:07,325 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295333812] [2019-11-15 21:44:07,325 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048833848] [2019-11-15 21:44:07,325 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:44:07,486 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-15 21:44:07,486 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:44:07,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 21:44:07,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:44:07,510 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-15 21:44:07,511 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:44:07,511 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 10 [2019-11-15 21:44:07,511 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532262019] [2019-11-15 21:44:07,512 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 21:44:07,512 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:44:07,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 21:44:07,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-15 21:44:07,512 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand 10 states. [2019-11-15 21:44:07,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:44:07,702 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2019-11-15 21:44:07,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 21:44:07,702 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2019-11-15 21:44:07,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:44:07,703 INFO L225 Difference]: With dead ends: 72 [2019-11-15 21:44:07,703 INFO L226 Difference]: Without dead ends: 63 [2019-11-15 21:44:07,703 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-11-15 21:44:07,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-15 21:44:07,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-11-15 21:44:07,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-15 21:44:07,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2019-11-15 21:44:07,706 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 56 [2019-11-15 21:44:07,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:44:07,706 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2019-11-15 21:44:07,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 21:44:07,707 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2019-11-15 21:44:07,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-15 21:44:07,707 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:44:07,707 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:44:07,908 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:44:07,908 INFO L410 AbstractCegarLoop]: === Iteration 18 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-11-15 21:44:07,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:44:07,908 INFO L82 PathProgramCache]: Analyzing trace with hash 549219633, now seen corresponding path program 1 times [2019-11-15 21:44:07,908 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:44:07,908 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418418447] [2019-11-15 21:44:07,909 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:44:07,909 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:44:07,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:44:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:08,034 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-15 21:44:08,034 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418418447] [2019-11-15 21:44:08,034 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776545724] [2019-11-15 21:44:08,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:44:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:08,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 21:44:08,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:44:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-15 21:44:08,217 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:44:08,217 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8 [2019-11-15 21:44:08,218 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273050777] [2019-11-15 21:44:08,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 21:44:08,218 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:44:08,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 21:44:08,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:44:08,220 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 8 states. [2019-11-15 21:44:08,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:44:08,353 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2019-11-15 21:44:08,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 21:44:08,354 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-11-15 21:44:08,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:44:08,354 INFO L225 Difference]: With dead ends: 65 [2019-11-15 21:44:08,354 INFO L226 Difference]: Without dead ends: 65 [2019-11-15 21:44:08,354 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-11-15 21:44:08,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-11-15 21:44:08,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2019-11-15 21:44:08,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-11-15 21:44:08,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2019-11-15 21:44:08,357 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 57 [2019-11-15 21:44:08,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:44:08,357 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2019-11-15 21:44:08,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 21:44:08,358 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2019-11-15 21:44:08,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-15 21:44:08,358 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:44:08,358 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:44:08,559 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:44:08,559 INFO L410 AbstractCegarLoop]: === Iteration 19 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-11-15 21:44:08,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:44:08,559 INFO L82 PathProgramCache]: Analyzing trace with hash -150926534, now seen corresponding path program 1 times [2019-11-15 21:44:08,560 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:44:08,560 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281117860] [2019-11-15 21:44:08,560 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:44:08,560 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:44:08,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:44:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:09,680 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 21:44:09,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281117860] [2019-11-15 21:44:09,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834116223] [2019-11-15 21:44:09,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:44:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:44:09,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 96 conjunts are in the unsatisfiable core [2019-11-15 21:44:09,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:44:09,854 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2019-11-15 21:44:09,854 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:44:09,855 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:44:09,856 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:44:09,856 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:5 [2019-11-15 21:44:10,033 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:44:10,234 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:44:10,235 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: |v_#valid_BEFORE_CALL_9| input size 35 context size 35 output size 35 at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:349) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:361) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-15 21:44:10,239 INFO L168 Benchmark]: Toolchain (without parser) took 17975.66 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 284.7 MB). Free memory was 939.3 MB in the beginning and 898.1 MB in the end (delta: 41.2 MB). Peak memory consumption was 325.9 MB. Max. memory is 11.5 GB. [2019-11-15 21:44:10,239 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:44:10,239 INFO L168 Benchmark]: CACSL2BoogieTranslator took 482.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -177.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-15 21:44:10,240 INFO L168 Benchmark]: Boogie Preprocessor took 55.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 21:44:10,241 INFO L168 Benchmark]: RCFGBuilder took 666.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 49.2 MB). Peak memory consumption was 49.2 MB. Max. memory is 11.5 GB. [2019-11-15 21:44:10,241 INFO L168 Benchmark]: TraceAbstraction took 16767.71 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 144.7 MB). Free memory was 1.1 GB in the beginning and 898.1 MB in the end (delta: 159.0 MB). Peak memory consumption was 303.7 MB. Max. memory is 11.5 GB. [2019-11-15 21:44:10,243 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 482.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -177.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 55.75 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 666.06 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: 49.2 MB). Peak memory consumption was 49.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 16767.71 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 144.7 MB). Free memory was 1.1 GB in the beginning and 898.1 MB in the end (delta: 159.0 MB). Peak memory consumption was 303.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: |v_#valid_BEFORE_CALL_9| input size 35 context size 35 output size 35 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |v_#valid_BEFORE_CALL_9| input size 35 context size 35 output size 35: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:349) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-11-15 21:44:12,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:44:12,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:44:12,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:44:12,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:44:12,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:44:12,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:44:12,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:44:12,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:44:12,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:44:12,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:44:12,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:44:12,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:44:12,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:44:12,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:44:12,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:44:12,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:44:12,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:44:12,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:44:12,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:44:12,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:44:12,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:44:12,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:44:12,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:44:12,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:44:12,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:44:12,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:44:12,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:44:12,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:44:12,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:44:12,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:44:12,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:44:12,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:44:12,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:44:12,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:44:12,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:44:12,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:44:12,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:44:12,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:44:12,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:44:12,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:44:12,395 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-15 21:44:12,409 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:44:12,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:44:12,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:44:12,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:44:12,410 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:44:12,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:44:12,411 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:44:12,411 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 21:44:12,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:44:12,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:44:12,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:44:12,412 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-15 21:44:12,412 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-15 21:44:12,412 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-15 21:44:12,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:44:12,413 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 21:44:12,413 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 21:44:12,413 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:44:12,413 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:44:12,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:44:12,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:44:12,414 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:44:12,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:44:12,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:44:12,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:44:12,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:44:12,415 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 21:44:12,415 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 21:44:12,416 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 21:44:12,416 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer 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 -> a3189d7d4e71631c5441bd903e5049703e07b8be [2019-11-15 21:44:12,443 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:44:12,458 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:44:12,461 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:44:12,463 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:44:12,464 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:44:12,464 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/../../sv-benchmarks/c/list-simple/sll2n_remove_all.i [2019-11-15 21:44:12,524 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/data/5829d58a7/1c1474b3fe064e769524d1f56ef64786/FLAG1982fbdc4 [2019-11-15 21:44:12,954 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:44:12,955 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/sv-benchmarks/c/list-simple/sll2n_remove_all.i [2019-11-15 21:44:12,969 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/data/5829d58a7/1c1474b3fe064e769524d1f56ef64786/FLAG1982fbdc4 [2019-11-15 21:44:13,300 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/data/5829d58a7/1c1474b3fe064e769524d1f56ef64786 [2019-11-15 21:44:13,302 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:44:13,304 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-15 21:44:13,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:44:13,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:44:13,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:44:13,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:44:13" (1/1) ... [2019-11-15 21:44:13,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3030703f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:44:13, skipping insertion in model container [2019-11-15 21:44:13,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:44:13" (1/1) ... [2019-11-15 21:44:13,317 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:44:13,350 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:44:13,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:44:13,736 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:44:13,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:44:13,872 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:44:13,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:44:13 WrapperNode [2019-11-15 21:44:13,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:44:13,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:44:13,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:44:13,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:44:13,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:44:13" (1/1) ... [2019-11-15 21:44:13,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:44:13" (1/1) ... [2019-11-15 21:44:13,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:44:13" (1/1) ... [2019-11-15 21:44:13,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:44:13" (1/1) ... [2019-11-15 21:44:13,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:44:13" (1/1) ... [2019-11-15 21:44:13,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:44:13" (1/1) ... [2019-11-15 21:44:13,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:44:13" (1/1) ... [2019-11-15 21:44:13,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:44:13,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:44:13,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:44:13,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:44:13,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:44:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/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 [2019-11-15 21:44:13,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-15 21:44:13,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:44:13,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-15 21:44:13,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-15 21:44:13,994 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-15 21:44:13,994 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-15 21:44:13,994 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-11-15 21:44:13,994 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_remove_first [2019-11-15 21:44:13,994 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-15 21:44:13,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-15 21:44:13,994 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-15 21:44:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-15 21:44:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-15 21:44:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-15 21:44:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-15 21:44:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-15 21:44:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-15 21:44:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-15 21:44:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-15 21:44:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-15 21:44:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-15 21:44:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-15 21:44:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-15 21:44:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-15 21:44:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-15 21:44:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-15 21:44:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-15 21:44:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-15 21:44:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-15 21:44:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-15 21:44:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-15 21:44:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-15 21:44:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-15 21:44:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-15 21:44:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-15 21:44:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-15 21:44:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-15 21:44:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-15 21:44:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-15 21:44:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-15 21:44:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-15 21:44:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-15 21:44:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-15 21:44:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-15 21:44:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-15 21:44:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-15 21:44:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-15 21:44:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-15 21:44:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-15 21:44:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-15 21:44:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-15 21:44:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-15 21:44:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-15 21:44:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-15 21:44:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-15 21:44:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-15 21:44:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-15 21:44:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-15 21:44:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-15 21:44:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-15 21:44:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-15 21:44:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-15 21:44:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-15 21:44:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-15 21:44:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-15 21:44:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-15 21:44:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-15 21:44:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-15 21:44:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-15 21:44:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-15 21:44:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-15 21:44:14,008 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-15 21:44:14,008 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-15 21:44:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-15 21:44:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-15 21:44:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-15 21:44:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-15 21:44:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-15 21:44:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-15 21:44:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-15 21:44:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-15 21:44:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-15 21:44:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-15 21:44:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-15 21:44:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-15 21:44:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-15 21:44:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-15 21:44:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-15 21:44:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-15 21:44:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-15 21:44:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-15 21:44:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-15 21:44:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-15 21:44:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-15 21:44:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-15 21:44:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-15 21:44:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-15 21:44:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-15 21:44:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-15 21:44:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-15 21:44:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-15 21:44:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-15 21:44:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-15 21:44:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-15 21:44:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-15 21:44:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-15 21:44:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-15 21:44:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-15 21:44:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-15 21:44:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-15 21:44:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-15 21:44:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-15 21:44:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-15 21:44:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-15 21:44:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-15 21:44:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-15 21:44:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-15 21:44:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-15 21:44:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-15 21:44:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-15 21:44:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-11-15 21:44:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure sll_remove_first [2019-11-15 21:44:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-15 21:44:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 21:44:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-15 21:44:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 21:44:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-15 21:44:14,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-15 21:44:14,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:44:14,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-15 21:44:14,375 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-15 21:44:14,639 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:44:14,639 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-15 21:44:14,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:44:14 BoogieIcfgContainer [2019-11-15 21:44:14,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:44:14,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:44:14,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:44:14,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:44:14,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:44:13" (1/3) ... [2019-11-15 21:44:14,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b44cdfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:44:14, skipping insertion in model container [2019-11-15 21:44:14,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:44:13" (2/3) ... [2019-11-15 21:44:14,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b44cdfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:44:14, skipping insertion in model container [2019-11-15 21:44:14,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:44:14" (3/3) ... [2019-11-15 21:44:14,647 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_remove_all.i [2019-11-15 21:44:14,656 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:44:14,663 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2019-11-15 21:44:14,673 INFO L249 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2019-11-15 21:44:14,691 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:44:14,691 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-15 21:44:14,691 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:44:14,691 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:44:14,692 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:44:14,692 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:44:14,692 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:44:14,692 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:44:14,706 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2019-11-15 21:44:14,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 21:44:14,715 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:44:14,716 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:44:14,718 INFO L410 AbstractCegarLoop]: === Iteration 1 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION]=== [2019-11-15 21:44:14,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:44:14,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1645367829, now seen corresponding path program 1 times [2019-11-15 21:44:14,731 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:44:14,731 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [670319614] [2019-11-15 21:44:14,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_177d16f1-de86-45b0-9a7c-03798e1e19a4/bin/uautomizer/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 [2019-11-15 21:44:14,956 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:44:14,956 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Sort C_DOUBLE not declared at de.uni_freiburg.informatik.ultimate.logic.NoopScript.sort(NoopScript.java:412) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.sort(WrapperScript.java:223) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.NonDeclaringTermTransferrer.transferSort(NonDeclaringTermTransferrer.java:111) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.DeclarableFunctionSymbol.defineOrDeclare(DeclarableFunctionSymbol.java:160) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.transferHistoryFromRecord(HistoryRecordingScript.java:143) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.transferHistoryFromRecord(HistoryRecordingScript.java:168) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.SmtFunctionsAndAxioms.transferSymbols(SmtFunctionsAndAxioms.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleTraceCheck.createExternalManagedScript(IpTcStrategyModuleTraceCheck.java:81) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCvc4.constructManagedScript(IpTcStrategyModuleCvc4.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-15 21:44:14,962 INFO L168 Benchmark]: Toolchain (without parser) took 1657.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -120.4 MB). Peak memory consumption was 34.8 MB. Max. memory is 11.5 GB. [2019-11-15 21:44:14,962 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:44:14,963 INFO L168 Benchmark]: CACSL2BoogieTranslator took 568.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -190.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. [2019-11-15 21:44:14,963 INFO L168 Benchmark]: Boogie Preprocessor took 59.95 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. [2019-11-15 21:44:14,964 INFO L168 Benchmark]: RCFGBuilder took 706.98 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: 51.8 MB). Peak memory consumption was 51.8 MB. Max. memory is 11.5 GB. [2019-11-15 21:44:14,965 INFO L168 Benchmark]: TraceAbstraction took 318.38 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-15 21:44:14,967 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 568.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -190.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 59.95 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 706.98 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: 51.8 MB). Peak memory consumption was 51.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 318.38 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Sort C_DOUBLE not declared de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Sort C_DOUBLE not declared: de.uni_freiburg.informatik.ultimate.logic.NoopScript.sort(NoopScript.java:412) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...