./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/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2n_remove_all.i -s /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/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/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2n_remove_all.i -s /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/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 [2019-10-22 08:56:50,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:56:50,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:56:50,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:56:50,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:56:50,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:56:50,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:56:50,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:56:50,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:56:50,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:56:50,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:56:50,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:56:50,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:56:50,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:56:50,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:56:50,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:56:50,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:56:50,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:56:50,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:56:50,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:56:50,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:56:50,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:56:50,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:56:50,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:56:50,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:56:50,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:56:50,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:56:50,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:56:50,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:56:50,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:56:50,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:56:50,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:56:50,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:56:50,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:56:50,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:56:50,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:56:50,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:56:50,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:56:50,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:56:50,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:56:50,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:56:50,841 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-10-22 08:56:50,852 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:56:50,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:56:50,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:56:50,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:56:50,853 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:56:50,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:56:50,854 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:56:50,854 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:56:50,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:56:50,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:56:50,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:56:50,854 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 08:56:50,854 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 08:56:50,855 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 08:56:50,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:56:50,855 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:56:50,855 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:56:50,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:56:50,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:56:50,856 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:56:50,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:56:50,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:56:50,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:56:50,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:56:50,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:56:50,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:56:50,857 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/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/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 [2019-10-22 08:56:50,879 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:56:50,888 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:56:50,891 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:56:50,892 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:56:50,892 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:56:50,893 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/bin/uautomizer/../../sv-benchmarks/c/list-simple/sll2n_remove_all.i [2019-10-22 08:56:50,937 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/bin/uautomizer/data/ed31a9786/e628d26e7f26472f95d9d4cf7ae4d0ca/FLAG5dbdc6df4 [2019-10-22 08:56:51,434 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:56:51,434 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/sv-benchmarks/c/list-simple/sll2n_remove_all.i [2019-10-22 08:56:51,445 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/bin/uautomizer/data/ed31a9786/e628d26e7f26472f95d9d4cf7ae4d0ca/FLAG5dbdc6df4 [2019-10-22 08:56:51,748 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/bin/uautomizer/data/ed31a9786/e628d26e7f26472f95d9d4cf7ae4d0ca [2019-10-22 08:56:51,751 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:56:51,752 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 08:56:51,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:51,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:56:51,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:56:51,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:51" (1/1) ... [2019-10-22 08:56:51,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9aaf7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:51, skipping insertion in model container [2019-10-22 08:56:51,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:51" (1/1) ... [2019-10-22 08:56:51,769 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:56:51,805 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:56:52,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:52,190 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:56:52,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:52,267 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:56:52,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:52 WrapperNode [2019-10-22 08:56:52,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:52,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:56:52,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:56:52,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:56:52,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:52" (1/1) ... [2019-10-22 08:56:52,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:52" (1/1) ... [2019-10-22 08:56:52,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:52" (1/1) ... [2019-10-22 08:56:52,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:52" (1/1) ... [2019-10-22 08:56:52,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:52" (1/1) ... [2019-10-22 08:56:52,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:52" (1/1) ... [2019-10-22 08:56:52,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:52" (1/1) ... [2019-10-22 08:56:52,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:56:52,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:56:52,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:56:52,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:56:52,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/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 [2019-10-22 08:56:52,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 08:56:52,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:56:52,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-22 08:56:52,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-22 08:56:52,399 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-22 08:56:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-22 08:56:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-10-22 08:56:52,401 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_remove_first [2019-10-22 08:56:52,401 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 08:56:52,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-22 08:56:52,401 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-22 08:56:52,401 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-22 08:56:52,402 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-22 08:56:52,402 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-22 08:56:52,402 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-22 08:56:52,402 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-22 08:56:52,402 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-22 08:56:52,402 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-22 08:56:52,402 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-22 08:56:52,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-22 08:56:52,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-22 08:56:52,404 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-22 08:56:52,404 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-22 08:56:52,404 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-22 08:56:52,404 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-22 08:56:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-22 08:56:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-22 08:56:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-22 08:56:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-22 08:56:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-22 08:56:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-22 08:56:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-22 08:56:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-22 08:56:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-22 08:56:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-22 08:56:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-22 08:56:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-22 08:56:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-22 08:56:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-22 08:56:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-22 08:56:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-22 08:56:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-22 08:56:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-22 08:56:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-22 08:56:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-22 08:56:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-22 08:56:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-22 08:56:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-22 08:56:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-22 08:56:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-22 08:56:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-22 08:56:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-22 08:56:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-22 08:56:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-22 08:56:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-22 08:56:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-22 08:56:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-22 08:56:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-22 08:56:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-22 08:56:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-22 08:56:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-22 08:56:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-22 08:56:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-22 08:56:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-22 08:56:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-22 08:56:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-22 08:56:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-22 08:56:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-22 08:56:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-22 08:56:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-22 08:56:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-22 08:56:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-22 08:56:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-22 08:56:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-22 08:56:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-22 08:56:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-22 08:56:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-22 08:56:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-22 08:56:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-22 08:56:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-22 08:56:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-22 08:56:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-22 08:56:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-22 08:56:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-22 08:56:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-22 08:56:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-22 08:56:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-22 08:56:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-22 08:56:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-22 08:56:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-22 08:56:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-22 08:56:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-22 08:56:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-22 08:56:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-22 08:56:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-22 08:56:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-22 08:56:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-22 08:56:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-22 08:56:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-22 08:56:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-22 08:56:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-22 08:56:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-22 08:56:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-22 08:56:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-22 08:56:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-22 08:56:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-22 08:56:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-22 08:56:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-22 08:56:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-22 08:56:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-22 08:56:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-22 08:56:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-22 08:56:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-22 08:56:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-22 08:56:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-22 08:56:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-22 08:56:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-22 08:56:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 08:56:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-22 08:56:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:56:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-10-22 08:56:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure sll_remove_first [2019-10-22 08:56:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-22 08:56:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:56:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 08:56:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:56:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-22 08:56:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 08:56:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:56:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:56:52,716 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-22 08:56:52,989 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:56:52,989 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-22 08:56:52,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:52 BoogieIcfgContainer [2019-10-22 08:56:52,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:56:52,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:56:52,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:56:52,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:56:52,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:56:51" (1/3) ... [2019-10-22 08:56:52,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d00e4aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:52, skipping insertion in model container [2019-10-22 08:56:52,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:52" (2/3) ... [2019-10-22 08:56:52,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d00e4aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:52, skipping insertion in model container [2019-10-22 08:56:52,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:52" (3/3) ... [2019-10-22 08:56:53,002 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_remove_all.i [2019-10-22 08:56:53,012 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:56:53,023 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2019-10-22 08:56:53,035 INFO L249 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2019-10-22 08:56:53,060 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:56:53,060 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 08:56:53,061 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:56:53,061 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:56:53,061 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:56:53,061 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:56:53,061 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:56:53,061 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:56:53,080 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2019-10-22 08:56:53,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 08:56:53,090 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:53,090 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:53,093 INFO L410 AbstractCegarLoop]: === Iteration 1 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-10-22 08:56:53,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:53,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1645367829, now seen corresponding path program 1 times [2019-10-22 08:56:53,107 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:53,107 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366359310] [2019-10-22 08:56:53,108 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:53,108 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:53,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:53,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:53,302 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366359310] [2019-10-22 08:56:53,302 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:53,303 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:53,303 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882030519] [2019-10-22 08:56:53,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:56:53,307 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:53,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:56:53,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:56:53,350 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 4 states. [2019-10-22 08:56:53,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:53,685 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2019-10-22 08:56:53,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:56:53,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-22 08:56:53,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:53,699 INFO L225 Difference]: With dead ends: 72 [2019-10-22 08:56:53,699 INFO L226 Difference]: Without dead ends: 65 [2019-10-22 08:56:53,701 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 [2019-10-22 08:56:53,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-10-22 08:56:53,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2019-10-22 08:56:53,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-10-22 08:56:53,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2019-10-22 08:56:53,745 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 13 [2019-10-22 08:56:53,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:53,746 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2019-10-22 08:56:53,746 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:56:53,746 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2019-10-22 08:56:53,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 08:56:53,746 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:53,746 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:53,747 INFO L410 AbstractCegarLoop]: === Iteration 2 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-10-22 08:56:53,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:53,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1645367828, now seen corresponding path program 1 times [2019-10-22 08:56:53,747 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:53,748 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8224937] [2019-10-22 08:56:53,748 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:53,748 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:53,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:53,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:53,853 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8224937] [2019-10-22 08:56:53,854 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:53,854 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:53,854 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096575401] [2019-10-22 08:56:53,856 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:56:53,856 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:53,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:56:53,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:56:53,857 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 4 states. [2019-10-22 08:56:54,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:54,021 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2019-10-22 08:56:54,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:56:54,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-22 08:56:54,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:54,023 INFO L225 Difference]: With dead ends: 63 [2019-10-22 08:56:54,023 INFO L226 Difference]: Without dead ends: 63 [2019-10-22 08:56:54,024 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 [2019-10-22 08:56:54,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-22 08:56:54,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2019-10-22 08:56:54,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-10-22 08:56:54,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2019-10-22 08:56:54,031 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 13 [2019-10-22 08:56:54,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:54,032 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2019-10-22 08:56:54,032 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:56:54,032 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2019-10-22 08:56:54,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 08:56:54,032 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:54,033 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:54,033 INFO L410 AbstractCegarLoop]: === Iteration 3 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-10-22 08:56:54,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:54,033 INFO L82 PathProgramCache]: Analyzing trace with hash -247912000, now seen corresponding path program 1 times [2019-10-22 08:56:54,034 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:54,034 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268345063] [2019-10-22 08:56:54,034 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:54,034 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:54,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:54,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:54,145 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268345063] [2019-10-22 08:56:54,145 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:54,145 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:56:54,146 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305887800] [2019-10-22 08:56:54,146 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:56:54,146 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:54,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:56:54,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:56:54,147 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 6 states. [2019-10-22 08:56:54,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:54,412 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2019-10-22 08:56:54,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:56:54,414 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-10-22 08:56:54,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:54,415 INFO L225 Difference]: With dead ends: 66 [2019-10-22 08:56:54,416 INFO L226 Difference]: Without dead ends: 66 [2019-10-22 08:56:54,416 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 [2019-10-22 08:56:54,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-10-22 08:56:54,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2019-10-22 08:56:54,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-10-22 08:56:54,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2019-10-22 08:56:54,430 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 15 [2019-10-22 08:56:54,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:54,431 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2019-10-22 08:56:54,431 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:56:54,431 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2019-10-22 08:56:54,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 08:56:54,432 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:54,432 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:54,432 INFO L410 AbstractCegarLoop]: === Iteration 4 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-10-22 08:56:54,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:54,433 INFO L82 PathProgramCache]: Analyzing trace with hash -2020128309, now seen corresponding path program 1 times [2019-10-22 08:56:54,433 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:54,433 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599575397] [2019-10-22 08:56:54,433 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:54,434 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:54,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:54,582 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599575397] [2019-10-22 08:56:54,582 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:54,583 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:56:54,583 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591988950] [2019-10-22 08:56:54,583 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:56:54,583 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:54,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:56:54,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:56:54,584 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 7 states. [2019-10-22 08:56:54,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:54,870 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2019-10-22 08:56:54,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:56:54,871 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-10-22 08:56:54,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:54,872 INFO L225 Difference]: With dead ends: 70 [2019-10-22 08:56:54,872 INFO L226 Difference]: Without dead ends: 67 [2019-10-22 08:56:54,874 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 [2019-10-22 08:56:54,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-10-22 08:56:54,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2019-10-22 08:56:54,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-10-22 08:56:54,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2019-10-22 08:56:54,879 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 17 [2019-10-22 08:56:54,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:54,880 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2019-10-22 08:56:54,880 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:56:54,880 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2019-10-22 08:56:54,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 08:56:54,880 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:54,881 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:54,881 INFO L410 AbstractCegarLoop]: === Iteration 5 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-10-22 08:56:54,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:54,881 INFO L82 PathProgramCache]: Analyzing trace with hash -278961335, now seen corresponding path program 1 times [2019-10-22 08:56:54,882 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:54,882 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318719874] [2019-10-22 08:56:54,882 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:54,882 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:54,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:55,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:55,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318719874] [2019-10-22 08:56:55,027 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:55,027 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:56:55,028 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725780324] [2019-10-22 08:56:55,028 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:56:55,028 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:55,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:56:55,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:56:55,029 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 8 states. [2019-10-22 08:56:55,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:55,333 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2019-10-22 08:56:55,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:56:55,334 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-10-22 08:56:55,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:55,334 INFO L225 Difference]: With dead ends: 60 [2019-10-22 08:56:55,334 INFO L226 Difference]: Without dead ends: 60 [2019-10-22 08:56:55,335 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-22 08:56:55,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-10-22 08:56:55,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2019-10-22 08:56:55,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-10-22 08:56:55,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2019-10-22 08:56:55,341 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 19 [2019-10-22 08:56:55,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:55,342 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2019-10-22 08:56:55,342 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:56:55,342 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2019-10-22 08:56:55,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 08:56:55,343 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:55,343 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:55,343 INFO L410 AbstractCegarLoop]: === Iteration 6 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-10-22 08:56:55,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:55,344 INFO L82 PathProgramCache]: Analyzing trace with hash -278961334, now seen corresponding path program 1 times [2019-10-22 08:56:55,344 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:55,344 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302660951] [2019-10-22 08:56:55,344 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:55,344 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:55,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:55,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:55,490 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302660951] [2019-10-22 08:56:55,491 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:55,491 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:56:55,491 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843574131] [2019-10-22 08:56:55,491 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:56:55,492 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:55,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:56:55,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:56:55,492 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 8 states. [2019-10-22 08:56:55,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:55,731 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2019-10-22 08:56:55,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:56:55,732 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-10-22 08:56:55,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:55,733 INFO L225 Difference]: With dead ends: 59 [2019-10-22 08:56:55,733 INFO L226 Difference]: Without dead ends: 59 [2019-10-22 08:56:55,733 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 [2019-10-22 08:56:55,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-10-22 08:56:55,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2019-10-22 08:56:55,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-10-22 08:56:55,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2019-10-22 08:56:55,737 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 19 [2019-10-22 08:56:55,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:55,737 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2019-10-22 08:56:55,737 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:56:55,737 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2019-10-22 08:56:55,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 08:56:55,738 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:55,738 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] [2019-10-22 08:56:55,738 INFO L410 AbstractCegarLoop]: === Iteration 7 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-10-22 08:56:55,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:55,739 INFO L82 PathProgramCache]: Analyzing trace with hash 312386304, now seen corresponding path program 1 times [2019-10-22 08:56:55,739 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:55,739 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775220445] [2019-10-22 08:56:55,739 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:55,739 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:55,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:55,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:55,880 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775220445] [2019-10-22 08:56:55,880 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509336821] [2019-10-22 08:56:55,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/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 [2019-10-22 08:56:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:55,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 08:56:55,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:56,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:56,042 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:56,042 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 9 [2019-10-22 08:56:56,042 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608215254] [2019-10-22 08:56:56,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 08:56:56,043 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:56,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 08:56:56,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:56:56,043 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 9 states. [2019-10-22 08:56:56,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:56,274 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2019-10-22 08:56:56,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:56:56,274 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2019-10-22 08:56:56,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:56,275 INFO L225 Difference]: With dead ends: 72 [2019-10-22 08:56:56,275 INFO L226 Difference]: Without dead ends: 69 [2019-10-22 08:56:56,275 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 [2019-10-22 08:56:56,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-10-22 08:56:56,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 64. [2019-10-22 08:56:56,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-10-22 08:56:56,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2019-10-22 08:56:56,280 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 30 [2019-10-22 08:56:56,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:56,280 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2019-10-22 08:56:56,280 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 08:56:56,280 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2019-10-22 08:56:56,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-22 08:56:56,282 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:56,282 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] [2019-10-22 08:56:56,483 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:56,483 INFO L410 AbstractCegarLoop]: === Iteration 8 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-10-22 08:56:56,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:56,484 INFO L82 PathProgramCache]: Analyzing trace with hash -923097109, now seen corresponding path program 2 times [2019-10-22 08:56:56,484 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:56,484 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125210866] [2019-10-22 08:56:56,484 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:56,484 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:56,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:57,140 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:56:57,140 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125210866] [2019-10-22 08:56:57,140 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023934002] [2019-10-22 08:56:57,141 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/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 [2019-10-22 08:56:57,267 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 08:56:57,267 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:57,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-22 08:56:57,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:57,330 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 [2019-10-22 08:56:57,332 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:56:57,367 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:56:57,368 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:56:57,368 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-10-22 08:56:57,387 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 [2019-10-22 08:56:57,387 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:56:57,395 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:56:57,396 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:56:57,396 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:3 [2019-10-22 08:56:57,506 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 08:56:57,507 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 08:56:57,521 INFO L341 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-10-22 08:56:57,522 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 [2019-10-22 08:56:57,522 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:56:57,534 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:56:57,536 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. [2019-10-22 08:56:57,536 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:29 [2019-10-22 08:56:57,658 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 08:56:57,658 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:57,658 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2019-10-22 08:56:57,659 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991419618] [2019-10-22 08:56:57,659 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-22 08:56:57,659 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:57,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-22 08:56:57,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2019-10-22 08:56:57,660 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 18 states. [2019-10-22 08:56:58,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:58,374 INFO L93 Difference]: Finished difference Result 102 states and 108 transitions. [2019-10-22 08:56:58,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-22 08:56:58,374 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 43 [2019-10-22 08:56:58,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:58,375 INFO L225 Difference]: With dead ends: 102 [2019-10-22 08:56:58,375 INFO L226 Difference]: Without dead ends: 102 [2019-10-22 08:56:58,375 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2019-10-22 08:56:58,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-10-22 08:56:58,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 90. [2019-10-22 08:56:58,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-10-22 08:56:58,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 104 transitions. [2019-10-22 08:56:58,384 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 104 transitions. Word has length 43 [2019-10-22 08:56:58,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:58,385 INFO L462 AbstractCegarLoop]: Abstraction has 90 states and 104 transitions. [2019-10-22 08:56:58,385 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-22 08:56:58,385 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 104 transitions. [2019-10-22 08:56:58,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-22 08:56:58,386 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:58,386 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] [2019-10-22 08:56:58,586 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:58,587 INFO L410 AbstractCegarLoop]: === Iteration 9 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-10-22 08:56:58,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:58,587 INFO L82 PathProgramCache]: Analyzing trace with hash -923097110, now seen corresponding path program 1 times [2019-10-22 08:56:58,587 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:58,587 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392174797] [2019-10-22 08:56:58,587 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:58,587 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:58,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:59,096 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:56:59,096 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392174797] [2019-10-22 08:56:59,096 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881127383] [2019-10-22 08:56:59,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/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 [2019-10-22 08:56:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:59,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 27 conjunts are in the unsatisfiable core [2019-10-22 08:56:59,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:59,197 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 [2019-10-22 08:56:59,197 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:56:59,200 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:56:59,201 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:56:59,201 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-10-22 08:56:59,207 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 [2019-10-22 08:56:59,207 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:56:59,211 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:56:59,211 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:56:59,211 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:3 [2019-10-22 08:56:59,347 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 08:56:59,348 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 08:56:59,357 INFO L341 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-10-22 08:56:59,357 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 [2019-10-22 08:56:59,358 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:56:59,365 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:56:59,366 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. [2019-10-22 08:56:59,366 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:26 [2019-10-22 08:56:59,449 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:56:59,449 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:59,449 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 22 [2019-10-22 08:56:59,450 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948868023] [2019-10-22 08:56:59,450 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-22 08:56:59,450 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:59,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-22 08:56:59,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2019-10-22 08:56:59,451 INFO L87 Difference]: Start difference. First operand 90 states and 104 transitions. Second operand 23 states. [2019-10-22 08:57:00,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:00,260 INFO L93 Difference]: Finished difference Result 105 states and 120 transitions. [2019-10-22 08:57:00,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-22 08:57:00,260 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 43 [2019-10-22 08:57:00,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:00,261 INFO L225 Difference]: With dead ends: 105 [2019-10-22 08:57:00,261 INFO L226 Difference]: Without dead ends: 105 [2019-10-22 08:57:00,261 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2019-10-22 08:57:00,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-10-22 08:57:00,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 92. [2019-10-22 08:57:00,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-10-22 08:57:00,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions. [2019-10-22 08:57:00,268 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 43 [2019-10-22 08:57:00,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:00,268 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions. [2019-10-22 08:57:00,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-22 08:57:00,268 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions. [2019-10-22 08:57:00,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-22 08:57:00,269 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:00,269 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] [2019-10-22 08:57:00,469 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:00,470 INFO L410 AbstractCegarLoop]: === Iteration 10 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-10-22 08:57:00,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:00,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1448760713, now seen corresponding path program 1 times [2019-10-22 08:57:00,470 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:00,470 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782124652] [2019-10-22 08:57:00,470 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:00,470 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:00,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:00,683 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 08:57:00,683 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782124652] [2019-10-22 08:57:00,684 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:00,684 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-22 08:57:00,684 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362185782] [2019-10-22 08:57:00,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-22 08:57:00,684 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:00,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-22 08:57:00,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-10-22 08:57:00,685 INFO L87 Difference]: Start difference. First operand 92 states and 106 transitions. Second operand 15 states. [2019-10-22 08:57:01,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:01,241 INFO L93 Difference]: Finished difference Result 114 states and 133 transitions. [2019-10-22 08:57:01,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-22 08:57:01,242 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2019-10-22 08:57:01,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:01,243 INFO L225 Difference]: With dead ends: 114 [2019-10-22 08:57:01,243 INFO L226 Difference]: Without dead ends: 114 [2019-10-22 08:57:01,243 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-22 08:57:01,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-10-22 08:57:01,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 97. [2019-10-22 08:57:01,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-10-22 08:57:01,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 116 transitions. [2019-10-22 08:57:01,255 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 116 transitions. Word has length 44 [2019-10-22 08:57:01,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:01,256 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 116 transitions. [2019-10-22 08:57:01,256 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-22 08:57:01,256 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 116 transitions. [2019-10-22 08:57:01,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-22 08:57:01,257 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:01,257 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] [2019-10-22 08:57:01,258 INFO L410 AbstractCegarLoop]: === Iteration 11 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-10-22 08:57:01,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:01,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1448760714, now seen corresponding path program 1 times [2019-10-22 08:57:01,258 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:01,258 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861257949] [2019-10-22 08:57:01,258 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:01,259 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:01,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:01,542 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 08:57:01,542 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861257949] [2019-10-22 08:57:01,542 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:01,542 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-22 08:57:01,542 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848741852] [2019-10-22 08:57:01,543 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-22 08:57:01,543 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:01,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-22 08:57:01,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2019-10-22 08:57:01,544 INFO L87 Difference]: Start difference. First operand 97 states and 116 transitions. Second operand 16 states. [2019-10-22 08:57:02,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:02,191 INFO L93 Difference]: Finished difference Result 117 states and 136 transitions. [2019-10-22 08:57:02,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-22 08:57:02,192 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2019-10-22 08:57:02,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:02,193 INFO L225 Difference]: With dead ends: 117 [2019-10-22 08:57:02,193 INFO L226 Difference]: Without dead ends: 117 [2019-10-22 08:57:02,194 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 [2019-10-22 08:57:02,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2019-10-22 08:57:02,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 97. [2019-10-22 08:57:02,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-10-22 08:57:02,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 114 transitions. [2019-10-22 08:57:02,200 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 114 transitions. Word has length 44 [2019-10-22 08:57:02,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:02,200 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 114 transitions. [2019-10-22 08:57:02,200 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-22 08:57:02,201 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 114 transitions. [2019-10-22 08:57:02,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-22 08:57:02,202 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:02,202 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] [2019-10-22 08:57:02,202 INFO L410 AbstractCegarLoop]: === Iteration 12 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-10-22 08:57:02,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:02,202 INFO L82 PathProgramCache]: Analyzing trace with hash -95902865, now seen corresponding path program 1 times [2019-10-22 08:57:02,203 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:02,203 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835432148] [2019-10-22 08:57:02,203 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:02,203 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:02,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:02,395 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 08:57:02,395 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835432148] [2019-10-22 08:57:02,396 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:02,396 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-22 08:57:02,396 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128212223] [2019-10-22 08:57:02,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-22 08:57:02,397 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:02,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-22 08:57:02,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-10-22 08:57:02,397 INFO L87 Difference]: Start difference. First operand 97 states and 114 transitions. Second operand 15 states. [2019-10-22 08:57:02,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:02,963 INFO L93 Difference]: Finished difference Result 116 states and 134 transitions. [2019-10-22 08:57:02,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-22 08:57:02,966 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2019-10-22 08:57:02,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:02,967 INFO L225 Difference]: With dead ends: 116 [2019-10-22 08:57:02,967 INFO L226 Difference]: Without dead ends: 116 [2019-10-22 08:57:02,968 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2019-10-22 08:57:02,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-10-22 08:57:02,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 103. [2019-10-22 08:57:02,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-10-22 08:57:02,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2019-10-22 08:57:02,980 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 47 [2019-10-22 08:57:02,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:02,981 INFO L462 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2019-10-22 08:57:02,981 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-22 08:57:02,981 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2019-10-22 08:57:02,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-22 08:57:02,982 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:02,982 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] [2019-10-22 08:57:02,982 INFO L410 AbstractCegarLoop]: === Iteration 13 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-10-22 08:57:02,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:02,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1321978602, now seen corresponding path program 1 times [2019-10-22 08:57:02,982 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:02,983 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872841701] [2019-10-22 08:57:02,983 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:02,983 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:02,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:03,199 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 08:57:03,199 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872841701] [2019-10-22 08:57:03,199 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:03,199 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-22 08:57:03,199 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499535206] [2019-10-22 08:57:03,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-22 08:57:03,200 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:03,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-22 08:57:03,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-10-22 08:57:03,201 INFO L87 Difference]: Start difference. First operand 103 states and 121 transitions. Second operand 15 states. [2019-10-22 08:57:03,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:03,693 INFO L93 Difference]: Finished difference Result 115 states and 132 transitions. [2019-10-22 08:57:03,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-22 08:57:03,693 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2019-10-22 08:57:03,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:03,694 INFO L225 Difference]: With dead ends: 115 [2019-10-22 08:57:03,694 INFO L226 Difference]: Without dead ends: 115 [2019-10-22 08:57:03,694 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 [2019-10-22 08:57:03,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2019-10-22 08:57:03,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105. [2019-10-22 08:57:03,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-10-22 08:57:03,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2019-10-22 08:57:03,698 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 48 [2019-10-22 08:57:03,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:03,699 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2019-10-22 08:57:03,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-22 08:57:03,699 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2019-10-22 08:57:03,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-22 08:57:03,700 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:03,700 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] [2019-10-22 08:57:03,700 INFO L410 AbstractCegarLoop]: === Iteration 14 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-10-22 08:57:03,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:03,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1968336175, now seen corresponding path program 1 times [2019-10-22 08:57:03,701 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:03,701 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140821088] [2019-10-22 08:57:03,701 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:03,701 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:03,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:03,796 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-22 08:57:03,796 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140821088] [2019-10-22 08:57:03,796 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:03,797 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:57:03,797 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012761064] [2019-10-22 08:57:03,797 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:57:03,797 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:03,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:57:03,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:57:03,798 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 7 states. [2019-10-22 08:57:03,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:03,966 INFO L93 Difference]: Finished difference Result 104 states and 121 transitions. [2019-10-22 08:57:03,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:57:03,966 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2019-10-22 08:57:03,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:03,967 INFO L225 Difference]: With dead ends: 104 [2019-10-22 08:57:03,967 INFO L226 Difference]: Without dead ends: 104 [2019-10-22 08:57:03,967 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 [2019-10-22 08:57:03,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-10-22 08:57:03,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2019-10-22 08:57:03,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-10-22 08:57:03,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 121 transitions. [2019-10-22 08:57:03,971 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 121 transitions. Word has length 49 [2019-10-22 08:57:03,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:03,972 INFO L462 AbstractCegarLoop]: Abstraction has 104 states and 121 transitions. [2019-10-22 08:57:03,972 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:57:03,972 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 121 transitions. [2019-10-22 08:57:03,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-22 08:57:03,973 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:03,973 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] [2019-10-22 08:57:03,973 INFO L410 AbstractCegarLoop]: === Iteration 15 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-10-22 08:57:03,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:03,974 INFO L82 PathProgramCache]: Analyzing trace with hash -888879155, now seen corresponding path program 1 times [2019-10-22 08:57:03,974 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:03,974 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223673890] [2019-10-22 08:57:03,974 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:03,974 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:03,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:57:04,448 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223673890] [2019-10-22 08:57:04,448 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090057946] [2019-10-22 08:57:04,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/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 [2019-10-22 08:57:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:04,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:57:04,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:04,675 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 08:57:04,676 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 [2019-10-22 08:57:04,677 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:57:04,680 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:57:04,681 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. [2019-10-22 08:57:04,681 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:16 [2019-10-22 08:57:04,726 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-22 08:57:04,726 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 08:57:04,726 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [21] total 27 [2019-10-22 08:57:04,726 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366333313] [2019-10-22 08:57:04,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:57:04,727 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:04,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:57:04,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2019-10-22 08:57:04,727 INFO L87 Difference]: Start difference. First operand 104 states and 121 transitions. Second operand 8 states. [2019-10-22 08:57:04,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:04,901 INFO L93 Difference]: Finished difference Result 103 states and 119 transitions. [2019-10-22 08:57:04,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:57:04,902 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2019-10-22 08:57:04,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:04,902 INFO L225 Difference]: With dead ends: 103 [2019-10-22 08:57:04,903 INFO L226 Difference]: Without dead ends: 103 [2019-10-22 08:57:04,903 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2019-10-22 08:57:04,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-10-22 08:57:04,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2019-10-22 08:57:04,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-10-22 08:57:04,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2019-10-22 08:57:04,907 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 50 [2019-10-22 08:57:04,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:04,907 INFO L462 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2019-10-22 08:57:04,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:57:04,907 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2019-10-22 08:57:04,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-22 08:57:04,909 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:04,909 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] [2019-10-22 08:57:05,109 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:05,109 INFO L410 AbstractCegarLoop]: === Iteration 16 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-10-22 08:57:05,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:05,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1837440975, now seen corresponding path program 1 times [2019-10-22 08:57:05,110 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:05,110 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427774038] [2019-10-22 08:57:05,110 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:05,110 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:05,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-22 08:57:05,210 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427774038] [2019-10-22 08:57:05,210 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:05,210 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:57:05,210 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33827329] [2019-10-22 08:57:05,214 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:57:05,214 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:05,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:57:05,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:57:05,214 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand 8 states. [2019-10-22 08:57:05,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:05,404 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2019-10-22 08:57:05,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 08:57:05,404 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2019-10-22 08:57:05,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:05,405 INFO L225 Difference]: With dead ends: 103 [2019-10-22 08:57:05,405 INFO L226 Difference]: Without dead ends: 103 [2019-10-22 08:57:05,405 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 [2019-10-22 08:57:05,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-10-22 08:57:05,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2019-10-22 08:57:05,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-10-22 08:57:05,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2019-10-22 08:57:05,412 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 55 [2019-10-22 08:57:05,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:05,412 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2019-10-22 08:57:05,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:57:05,412 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2019-10-22 08:57:05,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-22 08:57:05,413 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:05,413 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] [2019-10-22 08:57:05,414 INFO L410 AbstractCegarLoop]: === Iteration 17 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-10-22 08:57:05,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:05,414 INFO L82 PathProgramCache]: Analyzing trace with hash 366819552, now seen corresponding path program 3 times [2019-10-22 08:57:05,414 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:05,414 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164564638] [2019-10-22 08:57:05,414 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:05,414 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:05,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:05,539 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-22 08:57:05,539 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164564638] [2019-10-22 08:57:05,539 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287279475] [2019-10-22 08:57:05,539 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/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 [2019-10-22 08:57:05,673 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-10-22 08:57:05,673 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:57:05,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:57:05,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:05,695 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-22 08:57:05,695 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:57:05,696 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 10 [2019-10-22 08:57:05,696 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558591117] [2019-10-22 08:57:05,696 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 08:57:05,696 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:05,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 08:57:05,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-22 08:57:05,697 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand 10 states. [2019-10-22 08:57:05,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:05,878 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2019-10-22 08:57:05,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 08:57:05,878 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2019-10-22 08:57:05,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:05,879 INFO L225 Difference]: With dead ends: 72 [2019-10-22 08:57:05,879 INFO L226 Difference]: Without dead ends: 63 [2019-10-22 08:57:05,879 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 [2019-10-22 08:57:05,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-22 08:57:05,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-10-22 08:57:05,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-10-22 08:57:05,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2019-10-22 08:57:05,882 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 56 [2019-10-22 08:57:05,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:05,883 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2019-10-22 08:57:05,883 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 08:57:05,883 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2019-10-22 08:57:05,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-22 08:57:05,883 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:05,884 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] [2019-10-22 08:57:06,084 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:06,084 INFO L410 AbstractCegarLoop]: === Iteration 18 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-10-22 08:57:06,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:06,085 INFO L82 PathProgramCache]: Analyzing trace with hash 549219633, now seen corresponding path program 1 times [2019-10-22 08:57:06,085 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:06,085 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111851601] [2019-10-22 08:57:06,085 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:06,085 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:06,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:06,184 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-22 08:57:06,184 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111851601] [2019-10-22 08:57:06,184 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501282989] [2019-10-22 08:57:06,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/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 [2019-10-22 08:57:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:06,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:57:06,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:06,335 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-22 08:57:06,335 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:57:06,335 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8 [2019-10-22 08:57:06,335 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881043574] [2019-10-22 08:57:06,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:57:06,336 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:06,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:57:06,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:57:06,336 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 8 states. [2019-10-22 08:57:06,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:06,516 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2019-10-22 08:57:06,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:57:06,516 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-10-22 08:57:06,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:06,517 INFO L225 Difference]: With dead ends: 65 [2019-10-22 08:57:06,517 INFO L226 Difference]: Without dead ends: 65 [2019-10-22 08:57:06,518 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:57:06,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-10-22 08:57:06,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2019-10-22 08:57:06,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-10-22 08:57:06,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2019-10-22 08:57:06,521 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 57 [2019-10-22 08:57:06,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:06,522 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2019-10-22 08:57:06,522 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:57:06,522 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2019-10-22 08:57:06,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-22 08:57:06,522 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:06,523 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] [2019-10-22 08:57:06,723 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:06,724 INFO L410 AbstractCegarLoop]: === Iteration 19 === [sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION]=== [2019-10-22 08:57:06,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:06,724 INFO L82 PathProgramCache]: Analyzing trace with hash -150926534, now seen corresponding path program 1 times [2019-10-22 08:57:06,724 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:06,724 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916665498] [2019-10-22 08:57:06,724 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:06,724 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:06,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:07,811 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:57:07,811 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916665498] [2019-10-22 08:57:07,812 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378024492] [2019-10-22 08:57:07,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/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 [2019-10-22 08:57:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:07,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 96 conjunts are in the unsatisfiable core [2019-10-22 08:57:07,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:07,954 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 [2019-10-22 08:57:07,954 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:57:07,955 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:57:07,955 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:57:07,956 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:5 [2019-10-22 08:57:08,109 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:57:08,310 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:08,310 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 08:57:08,314 INFO L168 Benchmark]: Toolchain (without parser) took 16562.01 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 295.2 MB). Free memory was 939.1 MB in the beginning and 907.6 MB in the end (delta: 31.5 MB). Peak memory consumption was 326.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:08,314 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:08,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 514.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -174.5 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:08,315 INFO L168 Benchmark]: Boogie Preprocessor took 55.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:08,316 INFO L168 Benchmark]: RCFGBuilder took 666.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 50.1 MB). Peak memory consumption was 50.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:08,319 INFO L168 Benchmark]: TraceAbstraction took 15321.35 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 159.9 MB). Free memory was 1.1 GB in the beginning and 907.6 MB in the end (delta: 145.3 MB). Peak memory consumption was 305.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:08,321 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 514.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -174.5 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 55.31 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 666.83 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: 50.1 MB). Peak memory consumption was 50.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 15321.35 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 159.9 MB). Free memory was 1.1 GB in the beginning and 907.6 MB in the end (delta: 145.3 MB). Peak memory consumption was 305.2 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 [2019-10-22 08:57:10,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:57:10,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:57:10,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:57:10,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:57:10,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:57:10,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:57:10,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:57:10,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:57:10,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:57:10,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:57:10,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:57:10,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:57:10,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:57:10,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:57:10,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:57:10,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:57:10,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:57:10,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:57:10,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:57:10,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:57:10,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:57:10,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:57:10,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:57:10,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:57:10,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:57:10,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:57:10,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:57:10,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:57:10,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:57:10,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:57:10,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:57:10,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:57:10,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:57:10,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:57:10,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:57:10,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:57:10,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:57:10,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:57:10,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:57:10,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:57:10,556 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-10-22 08:57:10,567 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:57:10,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:57:10,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:57:10,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:57:10,569 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:57:10,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:57:10,569 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:57:10,569 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:57:10,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:57:10,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:57:10,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:57:10,570 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 08:57:10,570 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 08:57:10,570 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 08:57:10,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:57:10,571 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 08:57:10,571 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 08:57:10,571 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:57:10,571 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:57:10,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:57:10,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:57:10,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:57:10,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:57:10,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:57:10,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:57:10,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:57:10,573 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-10-22 08:57:10,573 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 08:57:10,573 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 08:57:10,573 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/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/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 [2019-10-22 08:57:10,601 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:57:10,613 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:57:10,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:57:10,617 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:57:10,618 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:57:10,619 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/bin/uautomizer/../../sv-benchmarks/c/list-simple/sll2n_remove_all.i [2019-10-22 08:57:10,681 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/bin/uautomizer/data/4b54fffd4/debd480c32014035852879b4530c4f90/FLAG517a93941 [2019-10-22 08:57:11,119 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:57:11,120 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/sv-benchmarks/c/list-simple/sll2n_remove_all.i [2019-10-22 08:57:11,133 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/bin/uautomizer/data/4b54fffd4/debd480c32014035852879b4530c4f90/FLAG517a93941 [2019-10-22 08:57:11,451 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/bin/uautomizer/data/4b54fffd4/debd480c32014035852879b4530c4f90 [2019-10-22 08:57:11,454 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:57:11,456 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 08:57:11,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:11,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:57:11,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:57:11,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:11" (1/1) ... [2019-10-22 08:57:11,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cd1f493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:11, skipping insertion in model container [2019-10-22 08:57:11,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:11" (1/1) ... [2019-10-22 08:57:11,474 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:57:11,518 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:57:11,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:11,867 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:57:11,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:12,013 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:57:12,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:12 WrapperNode [2019-10-22 08:57:12,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:12,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:57:12,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:57:12,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:57:12,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:12" (1/1) ... [2019-10-22 08:57:12,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:12" (1/1) ... [2019-10-22 08:57:12,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:12" (1/1) ... [2019-10-22 08:57:12,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:12" (1/1) ... [2019-10-22 08:57:12,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:12" (1/1) ... [2019-10-22 08:57:12,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:12" (1/1) ... [2019-10-22 08:57:12,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:12" (1/1) ... [2019-10-22 08:57:12,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:57:12,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:57:12,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:57:12,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:57:12,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/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 [2019-10-22 08:57:12,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 08:57:12,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:57:12,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-22 08:57:12,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-22 08:57:12,158 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-22 08:57:12,159 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-22 08:57:12,159 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-10-22 08:57:12,159 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_remove_first [2019-10-22 08:57:12,159 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 08:57:12,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-22 08:57:12,159 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-22 08:57:12,159 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-22 08:57:12,159 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-22 08:57:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-22 08:57:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-22 08:57:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-22 08:57:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-22 08:57:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-22 08:57:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-22 08:57:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-22 08:57:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-22 08:57:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-22 08:57:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-22 08:57:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-22 08:57:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-22 08:57:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-22 08:57:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-22 08:57:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-22 08:57:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-22 08:57:12,162 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-22 08:57:12,162 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-22 08:57:12,162 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-22 08:57:12,162 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-22 08:57:12,162 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-22 08:57:12,162 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-22 08:57:12,162 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-22 08:57:12,162 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-22 08:57:12,163 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-22 08:57:12,163 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-22 08:57:12,163 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-22 08:57:12,163 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-22 08:57:12,163 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-22 08:57:12,163 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-22 08:57:12,163 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-22 08:57:12,163 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-22 08:57:12,164 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-22 08:57:12,164 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-22 08:57:12,164 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-22 08:57:12,164 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-22 08:57:12,166 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-22 08:57:12,166 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-22 08:57:12,166 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-22 08:57:12,166 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-22 08:57:12,167 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-22 08:57:12,167 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-22 08:57:12,167 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-22 08:57:12,167 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-22 08:57:12,167 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-22 08:57:12,168 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-22 08:57:12,168 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-22 08:57:12,168 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-22 08:57:12,168 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-22 08:57:12,168 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-22 08:57:12,168 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-22 08:57:12,168 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-22 08:57:12,169 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-22 08:57:12,169 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-22 08:57:12,169 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-22 08:57:12,169 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-22 08:57:12,169 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-22 08:57:12,169 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-22 08:57:12,169 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-22 08:57:12,170 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-22 08:57:12,170 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-22 08:57:12,170 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-22 08:57:12,170 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-22 08:57:12,170 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-22 08:57:12,170 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-22 08:57:12,171 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-22 08:57:12,171 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-22 08:57:12,171 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-22 08:57:12,171 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-22 08:57:12,171 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-22 08:57:12,171 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-22 08:57:12,171 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-22 08:57:12,172 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-22 08:57:12,172 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-22 08:57:12,172 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-22 08:57:12,172 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-22 08:57:12,174 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-22 08:57:12,174 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-22 08:57:12,174 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-22 08:57:12,175 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-22 08:57:12,175 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-22 08:57:12,175 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-22 08:57:12,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-22 08:57:12,175 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-22 08:57:12,175 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-22 08:57:12,175 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-22 08:57:12,175 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-22 08:57:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-22 08:57:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-22 08:57:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-22 08:57:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-22 08:57:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-22 08:57:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-22 08:57:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-22 08:57:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-22 08:57:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-22 08:57:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-22 08:57:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-22 08:57:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-22 08:57:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-22 08:57:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-22 08:57:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-22 08:57:12,179 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-22 08:57:12,179 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-22 08:57:12,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 08:57:12,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-22 08:57:12,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-10-22 08:57:12,179 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-10-22 08:57:12,179 INFO L130 BoogieDeclarations]: Found specification of procedure sll_remove_first [2019-10-22 08:57:12,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-22 08:57:12,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:57:12,180 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 08:57:12,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:57:12,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-22 08:57:12,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 08:57:12,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:57:12,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-10-22 08:57:12,451 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-22 08:57:12,799 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:57:12,799 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-22 08:57:12,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:12 BoogieIcfgContainer [2019-10-22 08:57:12,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:57:12,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:57:12,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:57:12,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:57:12,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:57:11" (1/3) ... [2019-10-22 08:57:12,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e98ecd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:12, skipping insertion in model container [2019-10-22 08:57:12,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:12" (2/3) ... [2019-10-22 08:57:12,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e98ecd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:12, skipping insertion in model container [2019-10-22 08:57:12,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:12" (3/3) ... [2019-10-22 08:57:12,810 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_remove_all.i [2019-10-22 08:57:12,821 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:57:12,831 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2019-10-22 08:57:12,843 INFO L249 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2019-10-22 08:57:12,862 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:57:12,862 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 08:57:12,862 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:57:12,862 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:57:12,863 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:57:12,863 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:57:12,863 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:57:12,863 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:57:12,879 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2019-10-22 08:57:12,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 08:57:12,890 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:12,891 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:12,892 INFO L410 AbstractCegarLoop]: === Iteration 1 === [sll_createErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, sll_remove_firstErr2REQUIRES_VIOLATION, sll_remove_firstErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr4REQUIRES_VIOLATION, sll_remove_firstErr9REQUIRES_VIOLATION, sll_remove_firstErr3REQUIRES_VIOLATION, sll_remove_firstErr0REQUIRES_VIOLATION, sll_remove_firstErr5REQUIRES_VIOLATION, sll_remove_firstErr10REQUIRES_VIOLATION, sll_remove_firstErr1REQUIRES_VIOLATION, sll_remove_firstErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_firstErr8ASSERT_VIOLATIONMEMORY_FREE, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION]=== [2019-10-22 08:57:12,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:12,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1645367829, now seen corresponding path program 1 times [2019-10-22 08:57:12,909 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:57:12,909 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2004758576] [2019-10-22 08:57:12,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_284e7552-ad96-471c-9070-4d9bc0a6f96a/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 [2019-10-22 08:57:13,147 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 08:57:13,148 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) [2019-10-22 08:57:13,153 INFO L168 Benchmark]: Toolchain (without parser) took 1695.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 193.5 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -146.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:13,153 INFO L168 Benchmark]: CDTParser took 0.24 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. [2019-10-22 08:57:13,154 INFO L168 Benchmark]: CACSL2BoogieTranslator took 555.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 193.5 MB). Free memory was 941.6 MB in the beginning and 1.2 GB in the end (delta: -227.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:13,154 INFO L168 Benchmark]: Boogie Preprocessor took 81.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:13,156 INFO L168 Benchmark]: RCFGBuilder took 704.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 58.2 MB). Peak memory consumption was 58.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:13,158 INFO L168 Benchmark]: TraceAbstraction took 347.80 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: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:13,161 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 555.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 193.5 MB). Free memory was 941.6 MB in the beginning and 1.2 GB in the end (delta: -227.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 81.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 704.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 58.2 MB). Peak memory consumption was 58.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 347.80 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: 20.1 MB). Peak memory consumption was 20.1 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...