./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/sll2n_remove_all_reverse.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_1725d920-8410-4438-9bd8-91bbd2dbe433/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2n_remove_all_reverse.i -s /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/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 13cb8f020c937b6a3b0b6c39b85904cffb8b3ba5 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_1725d920-8410-4438-9bd8-91bbd2dbe433/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2n_remove_all_reverse.i -s /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/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 13cb8f020c937b6a3b0b6c39b85904cffb8b3ba5 ................................................................................................................................................................................................................................................................................................................................................................... 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 09:01:19,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:01:19,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:01:19,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:01:19,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:01:19,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:01:19,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:01:19,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:01:19,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:01:19,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:01:19,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:01:19,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:01:19,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:01:19,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:01:19,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:01:19,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:01:19,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:01:19,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:01:19,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:01:19,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:01:19,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:01:19,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:01:19,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:01:19,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:01:19,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:01:19,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:01:19,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:01:19,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:01:19,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:01:19,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:01:19,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:01:19,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:01:19,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:01:19,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:01:19,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:01:19,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:01:19,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:01:19,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:01:19,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:01:19,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:01:19,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:01:19,203 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-10-22 09:01:19,215 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:01:19,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:01:19,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:01:19,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:01:19,216 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:01:19,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:01:19,216 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:01:19,216 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:01:19,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:01:19,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:01:19,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:01:19,225 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 09:01:19,226 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 09:01:19,227 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 09:01:19,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:01:19,227 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:01:19,227 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:01:19,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:01:19,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:01:19,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:01:19,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:01:19,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:01:19,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:01:19,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:01:19,228 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:01:19,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:01:19,229 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_1725d920-8410-4438-9bd8-91bbd2dbe433/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 -> 13cb8f020c937b6a3b0b6c39b85904cffb8b3ba5 [2019-10-22 09:01:19,261 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:01:19,273 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:01:19,276 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:01:19,277 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:01:19,278 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:01:19,278 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/bin/uautomizer/../../sv-benchmarks/c/list-simple/sll2n_remove_all_reverse.i [2019-10-22 09:01:19,330 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/bin/uautomizer/data/9995b791c/ceba6f7938be48cc91256260401fce97/FLAG9b04a1655 [2019-10-22 09:01:19,801 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:01:19,802 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/sv-benchmarks/c/list-simple/sll2n_remove_all_reverse.i [2019-10-22 09:01:19,815 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/bin/uautomizer/data/9995b791c/ceba6f7938be48cc91256260401fce97/FLAG9b04a1655 [2019-10-22 09:01:19,831 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/bin/uautomizer/data/9995b791c/ceba6f7938be48cc91256260401fce97 [2019-10-22 09:01:19,833 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:01:19,835 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 09:01:19,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:19,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:01:19,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:01:19,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:19" (1/1) ... [2019-10-22 09:01:19,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@484b54c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:19, skipping insertion in model container [2019-10-22 09:01:19,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:19" (1/1) ... [2019-10-22 09:01:19,853 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:01:19,887 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:01:20,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:20,236 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:01:20,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:20,321 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:01:20,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:20 WrapperNode [2019-10-22 09:01:20,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:20,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:01:20,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:01:20,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:01:20,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:20" (1/1) ... [2019-10-22 09:01:20,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:20" (1/1) ... [2019-10-22 09:01:20,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:20" (1/1) ... [2019-10-22 09:01:20,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:20" (1/1) ... [2019-10-22 09:01:20,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:20" (1/1) ... [2019-10-22 09:01:20,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:20" (1/1) ... [2019-10-22 09:01:20,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:20" (1/1) ... [2019-10-22 09:01:20,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:01:20,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:01:20,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:01:20,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:01:20,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/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 09:01:20,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 09:01:20,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:01:20,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-22 09:01:20,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-22 09:01:20,459 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-22 09:01:20,460 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-22 09:01:20,460 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-10-22 09:01:20,461 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_remove_last [2019-10-22 09:01:20,461 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 09:01:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-22 09:01:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-22 09:01:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-22 09:01:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-22 09:01:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-22 09:01:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-22 09:01:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-22 09:01:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-22 09:01:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-22 09:01:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-22 09:01:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-22 09:01:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-22 09:01:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-22 09:01:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-22 09:01:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-22 09:01:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-22 09:01:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-22 09:01:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-22 09:01:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-22 09:01:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-22 09:01:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-22 09:01:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-22 09:01:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-22 09:01:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-22 09:01:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-22 09:01:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-22 09:01:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-22 09:01:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-22 09:01:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-22 09:01:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-22 09:01:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-22 09:01:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-22 09:01:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-22 09:01:20,465 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-22 09:01:20,465 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-22 09:01:20,465 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-22 09:01:20,467 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-22 09:01:20,467 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-22 09:01:20,467 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-22 09:01:20,467 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-22 09:01:20,467 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-22 09:01:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-22 09:01:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-22 09:01:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-22 09:01:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-22 09:01:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-22 09:01:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-22 09:01:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-22 09:01:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-22 09:01:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-22 09:01:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-22 09:01:20,469 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-22 09:01:20,469 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-22 09:01:20,469 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-22 09:01:20,469 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-22 09:01:20,471 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-22 09:01:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-22 09:01:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-22 09:01:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-22 09:01:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-22 09:01:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-22 09:01:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-22 09:01:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-22 09:01:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-22 09:01:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-22 09:01:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-22 09:01:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-22 09:01:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-22 09:01:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-22 09:01:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-22 09:01:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-22 09:01:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-22 09:01:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-22 09:01:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-22 09:01:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-22 09:01:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-22 09:01:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-22 09:01:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-22 09:01:20,475 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-22 09:01:20,475 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-22 09:01:20,475 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-22 09:01:20,475 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-22 09:01:20,475 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-22 09:01:20,475 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-22 09:01:20,475 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-22 09:01:20,475 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-22 09:01:20,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-22 09:01:20,475 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-22 09:01:20,475 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-22 09:01:20,476 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-22 09:01:20,476 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-22 09:01:20,476 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-22 09:01:20,476 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-22 09:01:20,476 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-22 09:01:20,476 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-22 09:01:20,476 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-22 09:01:20,476 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-22 09:01:20,476 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-22 09:01:20,476 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-22 09:01:20,476 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-22 09:01:20,476 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-22 09:01:20,477 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-22 09:01:20,477 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-22 09:01:20,477 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-22 09:01:20,477 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-22 09:01:20,478 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-22 09:01:20,478 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-22 09:01:20,478 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-22 09:01:20,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 09:01:20,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-22 09:01:20,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 09:01:20,478 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-10-22 09:01:20,478 INFO L130 BoogieDeclarations]: Found specification of procedure sll_remove_last [2019-10-22 09:01:20,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-22 09:01:20,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 09:01:20,479 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 09:01:20,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 09:01:20,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-22 09:01:20,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 09:01:20,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:01:20,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 09:01:20,792 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-22 09:01:21,078 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:01:21,078 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-22 09:01:21,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:21 BoogieIcfgContainer [2019-10-22 09:01:21,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:01:21,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:01:21,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:01:21,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:01:21,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:01:19" (1/3) ... [2019-10-22 09:01:21,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a37471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:21, skipping insertion in model container [2019-10-22 09:01:21,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:20" (2/3) ... [2019-10-22 09:01:21,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a37471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:21, skipping insertion in model container [2019-10-22 09:01:21,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:21" (3/3) ... [2019-10-22 09:01:21,091 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_remove_all_reverse.i [2019-10-22 09:01:21,100 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:01:21,107 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 31 error locations. [2019-10-22 09:01:21,121 INFO L249 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2019-10-22 09:01:21,141 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:01:21,141 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 09:01:21,141 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:01:21,142 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:01:21,142 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:01:21,142 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:01:21,142 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:01:21,142 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:01:21,161 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2019-10-22 09:01:21,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 09:01:21,171 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:21,172 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:21,175 INFO L410 AbstractCegarLoop]: === Iteration 1 === [sll_remove_lastErr15REQUIRES_VIOLATION, sll_remove_lastErr5REQUIRES_VIOLATION, sll_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr16REQUIRES_VIOLATION, sll_remove_lastErr3REQUIRES_VIOLATION, sll_remove_lastErr14REQUIRES_VIOLATION, sll_remove_lastErr4REQUIRES_VIOLATION, sll_remove_lastErr18REQUIRES_VIOLATION, sll_remove_lastErr17REQUIRES_VIOLATION, sll_remove_lastErr10REQUIRES_VIOLATION, sll_remove_lastErr19ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr0REQUIRES_VIOLATION, sll_remove_lastErr9REQUIRES_VIOLATION, sll_remove_lastErr20ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr21ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr1REQUIRES_VIOLATION, sll_remove_lastErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr13REQUIRES_VIOLATION, sll_remove_lastErr11REQUIRES_VIOLATION, sll_remove_lastErr2REQUIRES_VIOLATION, sll_remove_lastErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr12REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:21,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:21,182 INFO L82 PathProgramCache]: Analyzing trace with hash 2025219408, now seen corresponding path program 1 times [2019-10-22 09:01:21,190 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:21,190 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31056063] [2019-10-22 09:01:21,191 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:21,191 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:21,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:21,374 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 09:01:21,375 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31056063] [2019-10-22 09:01:21,376 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:21,376 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:01:21,376 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899293089] [2019-10-22 09:01:21,381 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:01:21,381 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:21,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:01:21,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:01:21,396 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 4 states. [2019-10-22 09:01:21,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:21,659 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2019-10-22 09:01:21,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:01:21,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-22 09:01:21,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:21,671 INFO L225 Difference]: With dead ends: 93 [2019-10-22 09:01:21,671 INFO L226 Difference]: Without dead ends: 86 [2019-10-22 09:01:21,673 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 09:01:21,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-10-22 09:01:21,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 81. [2019-10-22 09:01:21,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-10-22 09:01:21,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2019-10-22 09:01:21,712 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 13 [2019-10-22 09:01:21,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:21,713 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2019-10-22 09:01:21,713 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:01:21,713 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2019-10-22 09:01:21,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 09:01:21,713 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:21,714 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:21,714 INFO L410 AbstractCegarLoop]: === Iteration 2 === [sll_remove_lastErr15REQUIRES_VIOLATION, sll_remove_lastErr5REQUIRES_VIOLATION, sll_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr16REQUIRES_VIOLATION, sll_remove_lastErr3REQUIRES_VIOLATION, sll_remove_lastErr14REQUIRES_VIOLATION, sll_remove_lastErr4REQUIRES_VIOLATION, sll_remove_lastErr18REQUIRES_VIOLATION, sll_remove_lastErr17REQUIRES_VIOLATION, sll_remove_lastErr10REQUIRES_VIOLATION, sll_remove_lastErr19ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr0REQUIRES_VIOLATION, sll_remove_lastErr9REQUIRES_VIOLATION, sll_remove_lastErr20ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr21ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr1REQUIRES_VIOLATION, sll_remove_lastErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr13REQUIRES_VIOLATION, sll_remove_lastErr11REQUIRES_VIOLATION, sll_remove_lastErr2REQUIRES_VIOLATION, sll_remove_lastErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr12REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:21,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:21,714 INFO L82 PathProgramCache]: Analyzing trace with hash 2025219409, now seen corresponding path program 1 times [2019-10-22 09:01:21,715 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:21,715 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539089684] [2019-10-22 09:01:21,715 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:21,715 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:21,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:21,826 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 09:01:21,826 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539089684] [2019-10-22 09:01:21,827 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:21,827 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:01:21,827 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360554241] [2019-10-22 09:01:21,828 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:01:21,828 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:21,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:01:21,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:01:21,829 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand 4 states. [2019-10-22 09:01:22,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:22,024 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2019-10-22 09:01:22,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:01:22,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-22 09:01:22,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:22,025 INFO L225 Difference]: With dead ends: 84 [2019-10-22 09:01:22,026 INFO L226 Difference]: Without dead ends: 84 [2019-10-22 09:01:22,026 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 09:01:22,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-10-22 09:01:22,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 79. [2019-10-22 09:01:22,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-10-22 09:01:22,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2019-10-22 09:01:22,033 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 13 [2019-10-22 09:01:22,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:22,033 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2019-10-22 09:01:22,034 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:01:22,034 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2019-10-22 09:01:22,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 09:01:22,034 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:22,034 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:22,035 INFO L410 AbstractCegarLoop]: === Iteration 3 === [sll_remove_lastErr15REQUIRES_VIOLATION, sll_remove_lastErr5REQUIRES_VIOLATION, sll_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr16REQUIRES_VIOLATION, sll_remove_lastErr3REQUIRES_VIOLATION, sll_remove_lastErr14REQUIRES_VIOLATION, sll_remove_lastErr4REQUIRES_VIOLATION, sll_remove_lastErr18REQUIRES_VIOLATION, sll_remove_lastErr17REQUIRES_VIOLATION, sll_remove_lastErr10REQUIRES_VIOLATION, sll_remove_lastErr19ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr0REQUIRES_VIOLATION, sll_remove_lastErr9REQUIRES_VIOLATION, sll_remove_lastErr20ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr21ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr1REQUIRES_VIOLATION, sll_remove_lastErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr13REQUIRES_VIOLATION, sll_remove_lastErr11REQUIRES_VIOLATION, sll_remove_lastErr2REQUIRES_VIOLATION, sll_remove_lastErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr12REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:22,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:22,035 INFO L82 PathProgramCache]: Analyzing trace with hash -39903579, now seen corresponding path program 1 times [2019-10-22 09:01:22,035 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:22,035 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047729357] [2019-10-22 09:01:22,036 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:22,036 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:22,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:22,107 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 09:01:22,107 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047729357] [2019-10-22 09:01:22,107 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:22,108 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 09:01:22,108 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903629576] [2019-10-22 09:01:22,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:01:22,108 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:22,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:01:22,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:01:22,109 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand 6 states. [2019-10-22 09:01:22,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:22,384 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2019-10-22 09:01:22,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:01:22,385 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-10-22 09:01:22,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:22,386 INFO L225 Difference]: With dead ends: 87 [2019-10-22 09:01:22,386 INFO L226 Difference]: Without dead ends: 87 [2019-10-22 09:01:22,387 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 09:01:22,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2019-10-22 09:01:22,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 80. [2019-10-22 09:01:22,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-10-22 09:01:22,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2019-10-22 09:01:22,394 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 15 [2019-10-22 09:01:22,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:22,394 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2019-10-22 09:01:22,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:01:22,395 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2019-10-22 09:01:22,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 09:01:22,395 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:22,396 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 09:01:22,396 INFO L410 AbstractCegarLoop]: === Iteration 4 === [sll_remove_lastErr15REQUIRES_VIOLATION, sll_remove_lastErr5REQUIRES_VIOLATION, sll_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr16REQUIRES_VIOLATION, sll_remove_lastErr3REQUIRES_VIOLATION, sll_remove_lastErr14REQUIRES_VIOLATION, sll_remove_lastErr4REQUIRES_VIOLATION, sll_remove_lastErr18REQUIRES_VIOLATION, sll_remove_lastErr17REQUIRES_VIOLATION, sll_remove_lastErr10REQUIRES_VIOLATION, sll_remove_lastErr19ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr0REQUIRES_VIOLATION, sll_remove_lastErr9REQUIRES_VIOLATION, sll_remove_lastErr20ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr21ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr1REQUIRES_VIOLATION, sll_remove_lastErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr13REQUIRES_VIOLATION, sll_remove_lastErr11REQUIRES_VIOLATION, sll_remove_lastErr2REQUIRES_VIOLATION, sll_remove_lastErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr12REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:22,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:22,397 INFO L82 PathProgramCache]: Analyzing trace with hash 307504148, now seen corresponding path program 1 times [2019-10-22 09:01:22,397 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:22,397 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319386701] [2019-10-22 09:01:22,397 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:22,397 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:22,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:22,526 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 09:01:22,526 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319386701] [2019-10-22 09:01:22,527 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:22,527 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:01:22,527 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013189202] [2019-10-22 09:01:22,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:01:22,528 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:22,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:01:22,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:01:22,528 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand 8 states. [2019-10-22 09:01:22,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:22,934 INFO L93 Difference]: Finished difference Result 123 states and 132 transitions. [2019-10-22 09:01:22,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 09:01:22,934 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-10-22 09:01:22,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:22,936 INFO L225 Difference]: With dead ends: 123 [2019-10-22 09:01:22,936 INFO L226 Difference]: Without dead ends: 123 [2019-10-22 09:01:22,936 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2019-10-22 09:01:22,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-10-22 09:01:22,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 87. [2019-10-22 09:01:22,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-10-22 09:01:22,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2019-10-22 09:01:22,944 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 17 [2019-10-22 09:01:22,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:22,945 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2019-10-22 09:01:22,945 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:01:22,945 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2019-10-22 09:01:22,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 09:01:22,946 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:22,946 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 09:01:22,946 INFO L410 AbstractCegarLoop]: === Iteration 5 === [sll_remove_lastErr15REQUIRES_VIOLATION, sll_remove_lastErr5REQUIRES_VIOLATION, sll_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr16REQUIRES_VIOLATION, sll_remove_lastErr3REQUIRES_VIOLATION, sll_remove_lastErr14REQUIRES_VIOLATION, sll_remove_lastErr4REQUIRES_VIOLATION, sll_remove_lastErr18REQUIRES_VIOLATION, sll_remove_lastErr17REQUIRES_VIOLATION, sll_remove_lastErr10REQUIRES_VIOLATION, sll_remove_lastErr19ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr0REQUIRES_VIOLATION, sll_remove_lastErr9REQUIRES_VIOLATION, sll_remove_lastErr20ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr21ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr1REQUIRES_VIOLATION, sll_remove_lastErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr13REQUIRES_VIOLATION, sll_remove_lastErr11REQUIRES_VIOLATION, sll_remove_lastErr2REQUIRES_VIOLATION, sll_remove_lastErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr12REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:22,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:22,947 INFO L82 PathProgramCache]: Analyzing trace with hash 307504149, now seen corresponding path program 1 times [2019-10-22 09:01:22,947 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:22,947 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343304955] [2019-10-22 09:01:22,947 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:22,947 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:22,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:23,037 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 09:01:23,037 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343304955] [2019-10-22 09:01:23,038 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:23,038 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:01:23,038 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157600748] [2019-10-22 09:01:23,038 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:01:23,039 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:23,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:01:23,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:01:23,039 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand 7 states. [2019-10-22 09:01:23,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:23,318 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2019-10-22 09:01:23,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 09:01:23,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-10-22 09:01:23,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:23,319 INFO L225 Difference]: With dead ends: 89 [2019-10-22 09:01:23,319 INFO L226 Difference]: Without dead ends: 86 [2019-10-22 09:01:23,320 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 09:01:23,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-10-22 09:01:23,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 79. [2019-10-22 09:01:23,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-10-22 09:01:23,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2019-10-22 09:01:23,325 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 17 [2019-10-22 09:01:23,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:23,325 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2019-10-22 09:01:23,325 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:01:23,325 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2019-10-22 09:01:23,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 09:01:23,326 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:23,326 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 09:01:23,326 INFO L410 AbstractCegarLoop]: === Iteration 6 === [sll_remove_lastErr15REQUIRES_VIOLATION, sll_remove_lastErr5REQUIRES_VIOLATION, sll_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr16REQUIRES_VIOLATION, sll_remove_lastErr3REQUIRES_VIOLATION, sll_remove_lastErr14REQUIRES_VIOLATION, sll_remove_lastErr4REQUIRES_VIOLATION, sll_remove_lastErr18REQUIRES_VIOLATION, sll_remove_lastErr17REQUIRES_VIOLATION, sll_remove_lastErr10REQUIRES_VIOLATION, sll_remove_lastErr19ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr0REQUIRES_VIOLATION, sll_remove_lastErr9REQUIRES_VIOLATION, sll_remove_lastErr20ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr21ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr1REQUIRES_VIOLATION, sll_remove_lastErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr13REQUIRES_VIOLATION, sll_remove_lastErr11REQUIRES_VIOLATION, sll_remove_lastErr2REQUIRES_VIOLATION, sll_remove_lastErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr12REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:23,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:23,327 INFO L82 PathProgramCache]: Analyzing trace with hash 123258323, now seen corresponding path program 1 times [2019-10-22 09:01:23,327 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:23,327 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152123257] [2019-10-22 09:01:23,327 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:23,327 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:23,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:23,405 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 09:01:23,405 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152123257] [2019-10-22 09:01:23,406 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:23,406 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:01:23,406 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216304814] [2019-10-22 09:01:23,406 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:01:23,407 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:23,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:01:23,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:01:23,407 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand 8 states. [2019-10-22 09:01:23,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:23,656 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2019-10-22 09:01:23,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 09:01:23,656 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-10-22 09:01:23,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:23,657 INFO L225 Difference]: With dead ends: 79 [2019-10-22 09:01:23,657 INFO L226 Difference]: Without dead ends: 79 [2019-10-22 09:01:23,658 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 09:01:23,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-10-22 09:01:23,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2019-10-22 09:01:23,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-10-22 09:01:23,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2019-10-22 09:01:23,665 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 19 [2019-10-22 09:01:23,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:23,665 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2019-10-22 09:01:23,665 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:01:23,665 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2019-10-22 09:01:23,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 09:01:23,666 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:23,666 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 09:01:23,666 INFO L410 AbstractCegarLoop]: === Iteration 7 === [sll_remove_lastErr15REQUIRES_VIOLATION, sll_remove_lastErr5REQUIRES_VIOLATION, sll_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr16REQUIRES_VIOLATION, sll_remove_lastErr3REQUIRES_VIOLATION, sll_remove_lastErr14REQUIRES_VIOLATION, sll_remove_lastErr4REQUIRES_VIOLATION, sll_remove_lastErr18REQUIRES_VIOLATION, sll_remove_lastErr17REQUIRES_VIOLATION, sll_remove_lastErr10REQUIRES_VIOLATION, sll_remove_lastErr19ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr0REQUIRES_VIOLATION, sll_remove_lastErr9REQUIRES_VIOLATION, sll_remove_lastErr20ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr21ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr1REQUIRES_VIOLATION, sll_remove_lastErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr13REQUIRES_VIOLATION, sll_remove_lastErr11REQUIRES_VIOLATION, sll_remove_lastErr2REQUIRES_VIOLATION, sll_remove_lastErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr12REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:23,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:23,667 INFO L82 PathProgramCache]: Analyzing trace with hash 123258324, now seen corresponding path program 1 times [2019-10-22 09:01:23,667 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:23,667 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875556769] [2019-10-22 09:01:23,667 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:23,667 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:23,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:23,769 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 09:01:23,769 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875556769] [2019-10-22 09:01:23,769 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:23,770 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:01:23,770 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016935838] [2019-10-22 09:01:23,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:01:23,770 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:23,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:01:23,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:01:23,771 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand 8 states. [2019-10-22 09:01:24,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:24,029 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2019-10-22 09:01:24,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 09:01:24,030 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-10-22 09:01:24,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:24,031 INFO L225 Difference]: With dead ends: 78 [2019-10-22 09:01:24,031 INFO L226 Difference]: Without dead ends: 78 [2019-10-22 09:01:24,031 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 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 09:01:24,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-10-22 09:01:24,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2019-10-22 09:01:24,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-10-22 09:01:24,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2019-10-22 09:01:24,036 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 19 [2019-10-22 09:01:24,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:24,036 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 80 transitions. [2019-10-22 09:01:24,036 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:01:24,037 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 80 transitions. [2019-10-22 09:01:24,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 09:01:24,037 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:24,037 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 09:01:24,038 INFO L410 AbstractCegarLoop]: === Iteration 8 === [sll_remove_lastErr15REQUIRES_VIOLATION, sll_remove_lastErr5REQUIRES_VIOLATION, sll_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr16REQUIRES_VIOLATION, sll_remove_lastErr3REQUIRES_VIOLATION, sll_remove_lastErr14REQUIRES_VIOLATION, sll_remove_lastErr4REQUIRES_VIOLATION, sll_remove_lastErr18REQUIRES_VIOLATION, sll_remove_lastErr17REQUIRES_VIOLATION, sll_remove_lastErr10REQUIRES_VIOLATION, sll_remove_lastErr19ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr0REQUIRES_VIOLATION, sll_remove_lastErr9REQUIRES_VIOLATION, sll_remove_lastErr20ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr21ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr1REQUIRES_VIOLATION, sll_remove_lastErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr13REQUIRES_VIOLATION, sll_remove_lastErr11REQUIRES_VIOLATION, sll_remove_lastErr2REQUIRES_VIOLATION, sll_remove_lastErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr12REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:24,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:24,038 INFO L82 PathProgramCache]: Analyzing trace with hash -616890411, now seen corresponding path program 1 times [2019-10-22 09:01:24,038 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:24,038 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896731109] [2019-10-22 09:01:24,039 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:24,039 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:24,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:24,158 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 09:01:24,159 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896731109] [2019-10-22 09:01:24,160 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619383926] [2019-10-22 09:01:24,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/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 09:01:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:24,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 09:01:24,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:24,323 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 09:01:24,323 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:01:24,323 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 9 [2019-10-22 09:01:24,323 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731763695] [2019-10-22 09:01:24,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 09:01:24,324 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:24,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 09:01:24,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:01:24,324 INFO L87 Difference]: Start difference. First operand 77 states and 80 transitions. Second operand 9 states. [2019-10-22 09:01:24,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:24,631 INFO L93 Difference]: Finished difference Result 91 states and 96 transitions. [2019-10-22 09:01:24,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 09:01:24,631 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2019-10-22 09:01:24,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:24,632 INFO L225 Difference]: With dead ends: 91 [2019-10-22 09:01:24,632 INFO L226 Difference]: Without dead ends: 88 [2019-10-22 09:01:24,633 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 09:01:24,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-10-22 09:01:24,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2019-10-22 09:01:24,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-10-22 09:01:24,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2019-10-22 09:01:24,637 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 30 [2019-10-22 09:01:24,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:24,638 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2019-10-22 09:01:24,638 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 09:01:24,638 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2019-10-22 09:01:24,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-22 09:01:24,639 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:24,639 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 09:01:24,840 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:24,840 INFO L410 AbstractCegarLoop]: === Iteration 9 === [sll_remove_lastErr15REQUIRES_VIOLATION, sll_remove_lastErr5REQUIRES_VIOLATION, sll_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr16REQUIRES_VIOLATION, sll_remove_lastErr3REQUIRES_VIOLATION, sll_remove_lastErr14REQUIRES_VIOLATION, sll_remove_lastErr4REQUIRES_VIOLATION, sll_remove_lastErr18REQUIRES_VIOLATION, sll_remove_lastErr17REQUIRES_VIOLATION, sll_remove_lastErr10REQUIRES_VIOLATION, sll_remove_lastErr19ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr0REQUIRES_VIOLATION, sll_remove_lastErr9REQUIRES_VIOLATION, sll_remove_lastErr20ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr21ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr1REQUIRES_VIOLATION, sll_remove_lastErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr13REQUIRES_VIOLATION, sll_remove_lastErr11REQUIRES_VIOLATION, sll_remove_lastErr2REQUIRES_VIOLATION, sll_remove_lastErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr12REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:24,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:24,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1002767796, now seen corresponding path program 2 times [2019-10-22 09:01:24,841 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:24,841 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417255622] [2019-10-22 09:01:24,841 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:24,841 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:24,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:25,526 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 09:01:25,526 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417255622] [2019-10-22 09:01:25,527 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086834799] [2019-10-22 09:01:25,527 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/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 09:01:25,633 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 09:01:25,634 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:01:25,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 19 conjunts are in the unsatisfiable core [2019-10-22 09:01:25,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:25,691 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 09:01:25,691 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 09:01:25,722 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:01:25,722 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 09:01:25,723 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-10-22 09:01:25,734 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 09:01:25,735 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 09:01:25,738 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:01:25,738 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 09:01:25,738 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:3 [2019-10-22 09:01:25,842 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 09:01:25,844 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 09:01:25,858 INFO L341 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-10-22 09:01:25,858 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 09:01:25,859 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 09:01:25,869 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:01:25,870 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 09:01:25,871 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:26 [2019-10-22 09:01:25,965 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 09:01:25,965 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:01:25,965 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 19 [2019-10-22 09:01:25,966 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435211843] [2019-10-22 09:01:25,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-22 09:01:25,966 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:25,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-22 09:01:25,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2019-10-22 09:01:25,967 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 20 states. [2019-10-22 09:01:26,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:26,809 INFO L93 Difference]: Finished difference Result 134 states and 145 transitions. [2019-10-22 09:01:26,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-22 09:01:26,810 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 43 [2019-10-22 09:01:26,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:26,811 INFO L225 Difference]: With dead ends: 134 [2019-10-22 09:01:26,811 INFO L226 Difference]: Without dead ends: 134 [2019-10-22 09:01:26,811 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2019-10-22 09:01:26,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2019-10-22 09:01:26,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 97. [2019-10-22 09:01:26,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-10-22 09:01:26,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2019-10-22 09:01:26,817 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 43 [2019-10-22 09:01:26,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:26,818 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2019-10-22 09:01:26,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-22 09:01:26,818 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2019-10-22 09:01:26,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-22 09:01:26,818 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:26,819 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 09:01:27,019 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:27,020 INFO L410 AbstractCegarLoop]: === Iteration 10 === [sll_remove_lastErr15REQUIRES_VIOLATION, sll_remove_lastErr5REQUIRES_VIOLATION, sll_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr16REQUIRES_VIOLATION, sll_remove_lastErr3REQUIRES_VIOLATION, sll_remove_lastErr14REQUIRES_VIOLATION, sll_remove_lastErr4REQUIRES_VIOLATION, sll_remove_lastErr18REQUIRES_VIOLATION, sll_remove_lastErr17REQUIRES_VIOLATION, sll_remove_lastErr10REQUIRES_VIOLATION, sll_remove_lastErr19ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr0REQUIRES_VIOLATION, sll_remove_lastErr9REQUIRES_VIOLATION, sll_remove_lastErr20ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr21ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr1REQUIRES_VIOLATION, sll_remove_lastErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr13REQUIRES_VIOLATION, sll_remove_lastErr11REQUIRES_VIOLATION, sll_remove_lastErr2REQUIRES_VIOLATION, sll_remove_lastErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr12REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:27,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:27,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1002767797, now seen corresponding path program 1 times [2019-10-22 09:01:27,020 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:27,020 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273759635] [2019-10-22 09:01:27,020 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:27,020 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:27,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:27,384 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 09:01:27,385 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273759635] [2019-10-22 09:01:27,385 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129105196] [2019-10-22 09:01:27,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/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 09:01:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:27,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 31 conjunts are in the unsatisfiable core [2019-10-22 09:01:27,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:27,510 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 09:01:27,511 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 09:01:27,515 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:01:27,515 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 09:01:27,515 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-10-22 09:01:27,521 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 09:01:27,521 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 09:01:27,524 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:01:27,525 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 09:01:27,525 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:3 [2019-10-22 09:01:27,661 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 09:01:27,662 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 09:01:27,674 INFO L341 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-10-22 09:01:27,674 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 09:01:27,675 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 09:01:27,683 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:01:27,683 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 09:01:27,684 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:29 [2019-10-22 09:01:27,759 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 09:01:27,759 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:01:27,759 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2019-10-22 09:01:27,759 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263727234] [2019-10-22 09:01:27,760 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-10-22 09:01:27,760 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:27,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-10-22 09:01:27,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2019-10-22 09:01:27,760 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand 21 states. [2019-10-22 09:01:29,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:29,192 INFO L93 Difference]: Finished difference Result 142 states and 153 transitions. [2019-10-22 09:01:29,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-22 09:01:29,193 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 43 [2019-10-22 09:01:29,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:29,193 INFO L225 Difference]: With dead ends: 142 [2019-10-22 09:01:29,194 INFO L226 Difference]: Without dead ends: 142 [2019-10-22 09:01:29,197 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=208, Invalid=848, Unknown=0, NotChecked=0, Total=1056 [2019-10-22 09:01:29,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2019-10-22 09:01:29,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 122. [2019-10-22 09:01:29,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2019-10-22 09:01:29,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 149 transitions. [2019-10-22 09:01:29,203 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 149 transitions. Word has length 43 [2019-10-22 09:01:29,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:29,204 INFO L462 AbstractCegarLoop]: Abstraction has 122 states and 149 transitions. [2019-10-22 09:01:29,204 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-10-22 09:01:29,204 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 149 transitions. [2019-10-22 09:01:29,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-22 09:01:29,205 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:29,205 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 09:01:29,406 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:29,406 INFO L410 AbstractCegarLoop]: === Iteration 11 === [sll_remove_lastErr15REQUIRES_VIOLATION, sll_remove_lastErr5REQUIRES_VIOLATION, sll_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr16REQUIRES_VIOLATION, sll_remove_lastErr3REQUIRES_VIOLATION, sll_remove_lastErr14REQUIRES_VIOLATION, sll_remove_lastErr4REQUIRES_VIOLATION, sll_remove_lastErr18REQUIRES_VIOLATION, sll_remove_lastErr17REQUIRES_VIOLATION, sll_remove_lastErr10REQUIRES_VIOLATION, sll_remove_lastErr19ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr0REQUIRES_VIOLATION, sll_remove_lastErr9REQUIRES_VIOLATION, sll_remove_lastErr20ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr21ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr1REQUIRES_VIOLATION, sll_remove_lastErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr13REQUIRES_VIOLATION, sll_remove_lastErr11REQUIRES_VIOLATION, sll_remove_lastErr2REQUIRES_VIOLATION, sll_remove_lastErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr12REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:29,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:29,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1021030653, now seen corresponding path program 1 times [2019-10-22 09:01:29,406 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:29,407 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826649948] [2019-10-22 09:01:29,407 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:29,407 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:29,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:29,579 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 09:01:29,580 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826649948] [2019-10-22 09:01:29,580 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:29,580 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-22 09:01:29,580 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134118888] [2019-10-22 09:01:29,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-22 09:01:29,580 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:29,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-22 09:01:29,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-10-22 09:01:29,581 INFO L87 Difference]: Start difference. First operand 122 states and 149 transitions. Second operand 15 states. [2019-10-22 09:01:30,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:30,187 INFO L93 Difference]: Finished difference Result 165 states and 207 transitions. [2019-10-22 09:01:30,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-22 09:01:30,188 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2019-10-22 09:01:30,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:30,189 INFO L225 Difference]: With dead ends: 165 [2019-10-22 09:01:30,189 INFO L226 Difference]: Without dead ends: 165 [2019-10-22 09:01:30,189 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-22 09:01:30,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2019-10-22 09:01:30,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 127. [2019-10-22 09:01:30,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-10-22 09:01:30,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 159 transitions. [2019-10-22 09:01:30,196 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 159 transitions. Word has length 44 [2019-10-22 09:01:30,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:30,196 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 159 transitions. [2019-10-22 09:01:30,196 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-22 09:01:30,196 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 159 transitions. [2019-10-22 09:01:30,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-22 09:01:30,197 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:30,197 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 09:01:30,198 INFO L410 AbstractCegarLoop]: === Iteration 12 === [sll_remove_lastErr15REQUIRES_VIOLATION, sll_remove_lastErr5REQUIRES_VIOLATION, sll_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr16REQUIRES_VIOLATION, sll_remove_lastErr3REQUIRES_VIOLATION, sll_remove_lastErr14REQUIRES_VIOLATION, sll_remove_lastErr4REQUIRES_VIOLATION, sll_remove_lastErr18REQUIRES_VIOLATION, sll_remove_lastErr17REQUIRES_VIOLATION, sll_remove_lastErr10REQUIRES_VIOLATION, sll_remove_lastErr19ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr0REQUIRES_VIOLATION, sll_remove_lastErr9REQUIRES_VIOLATION, sll_remove_lastErr20ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr21ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr1REQUIRES_VIOLATION, sll_remove_lastErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr13REQUIRES_VIOLATION, sll_remove_lastErr11REQUIRES_VIOLATION, sll_remove_lastErr2REQUIRES_VIOLATION, sll_remove_lastErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr12REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:30,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:30,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1021030654, now seen corresponding path program 1 times [2019-10-22 09:01:30,198 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:30,198 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268330163] [2019-10-22 09:01:30,198 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:30,198 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:30,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:30,433 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 09:01:30,433 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268330163] [2019-10-22 09:01:30,434 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:30,434 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-22 09:01:30,434 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341276041] [2019-10-22 09:01:30,435 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-22 09:01:30,435 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:30,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-22 09:01:30,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2019-10-22 09:01:30,436 INFO L87 Difference]: Start difference. First operand 127 states and 159 transitions. Second operand 16 states. [2019-10-22 09:01:31,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:31,157 INFO L93 Difference]: Finished difference Result 168 states and 210 transitions. [2019-10-22 09:01:31,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-22 09:01:31,158 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2019-10-22 09:01:31,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:31,159 INFO L225 Difference]: With dead ends: 168 [2019-10-22 09:01:31,159 INFO L226 Difference]: Without dead ends: 168 [2019-10-22 09:01:31,159 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2019-10-22 09:01:31,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-10-22 09:01:31,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 127. [2019-10-22 09:01:31,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-10-22 09:01:31,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 157 transitions. [2019-10-22 09:01:31,170 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 157 transitions. Word has length 44 [2019-10-22 09:01:31,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:31,170 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 157 transitions. [2019-10-22 09:01:31,170 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-22 09:01:31,170 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 157 transitions. [2019-10-22 09:01:31,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-22 09:01:31,171 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:31,171 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 09:01:31,171 INFO L410 AbstractCegarLoop]: === Iteration 13 === [sll_remove_lastErr15REQUIRES_VIOLATION, sll_remove_lastErr5REQUIRES_VIOLATION, sll_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr16REQUIRES_VIOLATION, sll_remove_lastErr3REQUIRES_VIOLATION, sll_remove_lastErr14REQUIRES_VIOLATION, sll_remove_lastErr4REQUIRES_VIOLATION, sll_remove_lastErr18REQUIRES_VIOLATION, sll_remove_lastErr17REQUIRES_VIOLATION, sll_remove_lastErr10REQUIRES_VIOLATION, sll_remove_lastErr19ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr0REQUIRES_VIOLATION, sll_remove_lastErr9REQUIRES_VIOLATION, sll_remove_lastErr20ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr21ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr1REQUIRES_VIOLATION, sll_remove_lastErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr13REQUIRES_VIOLATION, sll_remove_lastErr11REQUIRES_VIOLATION, sll_remove_lastErr2REQUIRES_VIOLATION, sll_remove_lastErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr12REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:31,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:31,172 INFO L82 PathProgramCache]: Analyzing trace with hash 565846907, now seen corresponding path program 1 times [2019-10-22 09:01:31,172 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:31,172 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087414146] [2019-10-22 09:01:31,172 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:31,172 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:31,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:31,355 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 09:01:31,355 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087414146] [2019-10-22 09:01:31,355 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:31,355 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-22 09:01:31,355 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812009023] [2019-10-22 09:01:31,356 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-22 09:01:31,358 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:31,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-22 09:01:31,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-10-22 09:01:31,359 INFO L87 Difference]: Start difference. First operand 127 states and 157 transitions. Second operand 15 states. [2019-10-22 09:01:31,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:31,966 INFO L93 Difference]: Finished difference Result 126 states and 155 transitions. [2019-10-22 09:01:31,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-22 09:01:31,967 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2019-10-22 09:01:31,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:31,968 INFO L225 Difference]: With dead ends: 126 [2019-10-22 09:01:31,968 INFO L226 Difference]: Without dead ends: 126 [2019-10-22 09:01:31,968 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2019-10-22 09:01:31,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-10-22 09:01:31,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2019-10-22 09:01:31,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-10-22 09:01:31,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 155 transitions. [2019-10-22 09:01:31,972 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 155 transitions. Word has length 47 [2019-10-22 09:01:31,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:31,973 INFO L462 AbstractCegarLoop]: Abstraction has 126 states and 155 transitions. [2019-10-22 09:01:31,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-22 09:01:31,973 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 155 transitions. [2019-10-22 09:01:31,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-22 09:01:31,974 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:31,974 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 09:01:31,974 INFO L410 AbstractCegarLoop]: === Iteration 14 === [sll_remove_lastErr15REQUIRES_VIOLATION, sll_remove_lastErr5REQUIRES_VIOLATION, sll_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr16REQUIRES_VIOLATION, sll_remove_lastErr3REQUIRES_VIOLATION, sll_remove_lastErr14REQUIRES_VIOLATION, sll_remove_lastErr4REQUIRES_VIOLATION, sll_remove_lastErr18REQUIRES_VIOLATION, sll_remove_lastErr17REQUIRES_VIOLATION, sll_remove_lastErr10REQUIRES_VIOLATION, sll_remove_lastErr19ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr0REQUIRES_VIOLATION, sll_remove_lastErr9REQUIRES_VIOLATION, sll_remove_lastErr20ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr21ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr1REQUIRES_VIOLATION, sll_remove_lastErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr13REQUIRES_VIOLATION, sll_remove_lastErr11REQUIRES_VIOLATION, sll_remove_lastErr2REQUIRES_VIOLATION, sll_remove_lastErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr12REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:31,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:31,975 INFO L82 PathProgramCache]: Analyzing trace with hash 361816003, now seen corresponding path program 1 times [2019-10-22 09:01:31,975 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:31,975 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282861592] [2019-10-22 09:01:31,975 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:31,975 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:31,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:32,056 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 09:01:32,057 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282861592] [2019-10-22 09:01:32,057 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:32,057 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:01:32,057 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374502198] [2019-10-22 09:01:32,058 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:01:32,058 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:32,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:01:32,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:01:32,058 INFO L87 Difference]: Start difference. First operand 126 states and 155 transitions. Second operand 8 states. [2019-10-22 09:01:32,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:32,303 INFO L93 Difference]: Finished difference Result 127 states and 155 transitions. [2019-10-22 09:01:32,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 09:01:32,304 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2019-10-22 09:01:32,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:32,305 INFO L225 Difference]: With dead ends: 127 [2019-10-22 09:01:32,305 INFO L226 Difference]: Without dead ends: 127 [2019-10-22 09:01:32,305 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2019-10-22 09:01:32,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-10-22 09:01:32,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2019-10-22 09:01:32,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-10-22 09:01:32,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 155 transitions. [2019-10-22 09:01:32,310 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 155 transitions. Word has length 48 [2019-10-22 09:01:32,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:32,310 INFO L462 AbstractCegarLoop]: Abstraction has 126 states and 155 transitions. [2019-10-22 09:01:32,310 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:01:32,310 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 155 transitions. [2019-10-22 09:01:32,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-22 09:01:32,311 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:32,311 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 09:01:32,311 INFO L410 AbstractCegarLoop]: === Iteration 15 === [sll_remove_lastErr15REQUIRES_VIOLATION, sll_remove_lastErr5REQUIRES_VIOLATION, sll_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr16REQUIRES_VIOLATION, sll_remove_lastErr3REQUIRES_VIOLATION, sll_remove_lastErr14REQUIRES_VIOLATION, sll_remove_lastErr4REQUIRES_VIOLATION, sll_remove_lastErr18REQUIRES_VIOLATION, sll_remove_lastErr17REQUIRES_VIOLATION, sll_remove_lastErr10REQUIRES_VIOLATION, sll_remove_lastErr19ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr0REQUIRES_VIOLATION, sll_remove_lastErr9REQUIRES_VIOLATION, sll_remove_lastErr20ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr21ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr1REQUIRES_VIOLATION, sll_remove_lastErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr13REQUIRES_VIOLATION, sll_remove_lastErr11REQUIRES_VIOLATION, sll_remove_lastErr2REQUIRES_VIOLATION, sll_remove_lastErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr12REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:32,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:32,311 INFO L82 PathProgramCache]: Analyzing trace with hash 361816004, now seen corresponding path program 1 times [2019-10-22 09:01:32,312 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:32,312 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375925819] [2019-10-22 09:01:32,312 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:32,312 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:32,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:32,553 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 09:01:32,554 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375925819] [2019-10-22 09:01:32,554 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:32,555 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2019-10-22 09:01:32,555 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49655865] [2019-10-22 09:01:32,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-22 09:01:32,556 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:32,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-22 09:01:32,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2019-10-22 09:01:32,557 INFO L87 Difference]: Start difference. First operand 126 states and 155 transitions. Second operand 18 states. [2019-10-22 09:01:33,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:33,517 INFO L93 Difference]: Finished difference Result 148 states and 183 transitions. [2019-10-22 09:01:33,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-22 09:01:33,518 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2019-10-22 09:01:33,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:33,519 INFO L225 Difference]: With dead ends: 148 [2019-10-22 09:01:33,519 INFO L226 Difference]: Without dead ends: 148 [2019-10-22 09:01:33,519 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=1143, Unknown=0, NotChecked=0, Total=1332 [2019-10-22 09:01:33,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-10-22 09:01:33,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 130. [2019-10-22 09:01:33,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-10-22 09:01:33,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 159 transitions. [2019-10-22 09:01:33,524 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 159 transitions. Word has length 48 [2019-10-22 09:01:33,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:33,524 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 159 transitions. [2019-10-22 09:01:33,524 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-22 09:01:33,524 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 159 transitions. [2019-10-22 09:01:33,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-22 09:01:33,525 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:33,525 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 09:01:33,526 INFO L410 AbstractCegarLoop]: === Iteration 16 === [sll_remove_lastErr15REQUIRES_VIOLATION, sll_remove_lastErr5REQUIRES_VIOLATION, sll_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr16REQUIRES_VIOLATION, sll_remove_lastErr3REQUIRES_VIOLATION, sll_remove_lastErr14REQUIRES_VIOLATION, sll_remove_lastErr4REQUIRES_VIOLATION, sll_remove_lastErr18REQUIRES_VIOLATION, sll_remove_lastErr17REQUIRES_VIOLATION, sll_remove_lastErr10REQUIRES_VIOLATION, sll_remove_lastErr19ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr0REQUIRES_VIOLATION, sll_remove_lastErr9REQUIRES_VIOLATION, sll_remove_lastErr20ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr21ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr1REQUIRES_VIOLATION, sll_remove_lastErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr13REQUIRES_VIOLATION, sll_remove_lastErr11REQUIRES_VIOLATION, sll_remove_lastErr2REQUIRES_VIOLATION, sll_remove_lastErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr12REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:33,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:33,526 INFO L82 PathProgramCache]: Analyzing trace with hash 361385054, now seen corresponding path program 1 times [2019-10-22 09:01:33,526 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:33,526 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959882848] [2019-10-22 09:01:33,526 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:33,526 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:33,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:33,702 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 09:01:33,702 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959882848] [2019-10-22 09:01:33,702 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:33,703 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-22 09:01:33,703 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050374332] [2019-10-22 09:01:33,703 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-22 09:01:33,703 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:33,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-22 09:01:33,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-10-22 09:01:33,703 INFO L87 Difference]: Start difference. First operand 130 states and 159 transitions. Second operand 15 states. [2019-10-22 09:01:34,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:34,322 INFO L93 Difference]: Finished difference Result 174 states and 214 transitions. [2019-10-22 09:01:34,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-22 09:01:34,324 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2019-10-22 09:01:34,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:34,325 INFO L225 Difference]: With dead ends: 174 [2019-10-22 09:01:34,325 INFO L226 Difference]: Without dead ends: 174 [2019-10-22 09:01:34,326 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2019-10-22 09:01:34,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2019-10-22 09:01:34,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 138. [2019-10-22 09:01:34,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-10-22 09:01:34,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 170 transitions. [2019-10-22 09:01:34,331 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 170 transitions. Word has length 48 [2019-10-22 09:01:34,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:34,332 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 170 transitions. [2019-10-22 09:01:34,332 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-22 09:01:34,332 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 170 transitions. [2019-10-22 09:01:34,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-22 09:01:34,333 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:34,333 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 09:01:34,333 INFO L410 AbstractCegarLoop]: === Iteration 17 === [sll_remove_lastErr15REQUIRES_VIOLATION, sll_remove_lastErr5REQUIRES_VIOLATION, sll_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr16REQUIRES_VIOLATION, sll_remove_lastErr3REQUIRES_VIOLATION, sll_remove_lastErr14REQUIRES_VIOLATION, sll_remove_lastErr4REQUIRES_VIOLATION, sll_remove_lastErr18REQUIRES_VIOLATION, sll_remove_lastErr17REQUIRES_VIOLATION, sll_remove_lastErr10REQUIRES_VIOLATION, sll_remove_lastErr19ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr0REQUIRES_VIOLATION, sll_remove_lastErr9REQUIRES_VIOLATION, sll_remove_lastErr20ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr21ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr1REQUIRES_VIOLATION, sll_remove_lastErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr13REQUIRES_VIOLATION, sll_remove_lastErr11REQUIRES_VIOLATION, sll_remove_lastErr2REQUIRES_VIOLATION, sll_remove_lastErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr12REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:34,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:34,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1681965091, now seen corresponding path program 1 times [2019-10-22 09:01:34,334 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:34,334 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370026164] [2019-10-22 09:01:34,334 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:34,334 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:34,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:34,415 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 09:01:34,415 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370026164] [2019-10-22 09:01:34,415 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:34,416 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 09:01:34,416 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585925811] [2019-10-22 09:01:34,416 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:01:34,416 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:34,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:01:34,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:01:34,417 INFO L87 Difference]: Start difference. First operand 138 states and 170 transitions. Second operand 7 states. [2019-10-22 09:01:34,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:34,674 INFO L93 Difference]: Finished difference Result 137 states and 168 transitions. [2019-10-22 09:01:34,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 09:01:34,674 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2019-10-22 09:01:34,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:34,675 INFO L225 Difference]: With dead ends: 137 [2019-10-22 09:01:34,675 INFO L226 Difference]: Without dead ends: 137 [2019-10-22 09:01:34,676 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 09:01:34,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2019-10-22 09:01:34,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2019-10-22 09:01:34,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-10-22 09:01:34,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 168 transitions. [2019-10-22 09:01:34,679 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 168 transitions. Word has length 49 [2019-10-22 09:01:34,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:34,679 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 168 transitions. [2019-10-22 09:01:34,679 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:01:34,679 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 168 transitions. [2019-10-22 09:01:34,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-22 09:01:34,680 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:34,680 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 09:01:34,680 INFO L410 AbstractCegarLoop]: === Iteration 18 === [sll_remove_lastErr15REQUIRES_VIOLATION, sll_remove_lastErr5REQUIRES_VIOLATION, sll_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr16REQUIRES_VIOLATION, sll_remove_lastErr3REQUIRES_VIOLATION, sll_remove_lastErr14REQUIRES_VIOLATION, sll_remove_lastErr4REQUIRES_VIOLATION, sll_remove_lastErr18REQUIRES_VIOLATION, sll_remove_lastErr17REQUIRES_VIOLATION, sll_remove_lastErr10REQUIRES_VIOLATION, sll_remove_lastErr19ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr0REQUIRES_VIOLATION, sll_remove_lastErr9REQUIRES_VIOLATION, sll_remove_lastErr20ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr21ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr1REQUIRES_VIOLATION, sll_remove_lastErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr13REQUIRES_VIOLATION, sll_remove_lastErr11REQUIRES_VIOLATION, sll_remove_lastErr2REQUIRES_VIOLATION, sll_remove_lastErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr12REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:34,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:34,680 INFO L82 PathProgramCache]: Analyzing trace with hash -187169459, now seen corresponding path program 1 times [2019-10-22 09:01:34,680 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:34,680 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791351805] [2019-10-22 09:01:34,680 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:34,681 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:34,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:35,051 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 09:01:35,052 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791351805] [2019-10-22 09:01:35,052 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466799060] [2019-10-22 09:01:35,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/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 09:01:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:35,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 72 conjunts are in the unsatisfiable core [2019-10-22 09:01:35,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:35,304 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-10-22 09:01:35,305 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 09:01:35,308 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:01:35,310 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-10-22 09:01:35,310 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-22 09:01:35,313 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:01:35,314 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 09:01:35,314 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:27, output treesize:9 [2019-10-22 09:01:35,715 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:01:35,716 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 42 [2019-10-22 09:01:35,716 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 09:01:35,731 INFO L567 ElimStorePlain]: treesize reduction 4, result has 90.0 percent of original size [2019-10-22 09:01:35,731 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 09:01:35,732 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:50, output treesize:36 [2019-10-22 09:01:35,796 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 09:01:35,945 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 09:01:35,965 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 09:01:35,967 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:01:35,967 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 17 [2019-10-22 09:01:35,967 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 09:01:35,976 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:01:35,976 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 29 [2019-10-22 09:01:35,977 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 09:01:35,978 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 09:01:35,978 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 09:01:35,997 INFO L567 ElimStorePlain]: treesize reduction 14, result has 60.0 percent of original size [2019-10-22 09:01:35,998 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 09:01:35,998 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:71, output treesize:4 [2019-10-22 09:01:36,003 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 09:01:36,004 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:01:36,004 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 40 [2019-10-22 09:01:36,004 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467893493] [2019-10-22 09:01:36,005 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-10-22 09:01:36,005 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:36,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-10-22 09:01:36,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1471, Unknown=0, NotChecked=0, Total=1560 [2019-10-22 09:01:36,006 INFO L87 Difference]: Start difference. First operand 137 states and 168 transitions. Second operand 40 states. [2019-10-22 09:01:38,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:38,030 INFO L93 Difference]: Finished difference Result 161 states and 194 transitions. [2019-10-22 09:01:38,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-22 09:01:38,030 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 50 [2019-10-22 09:01:38,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:38,031 INFO L225 Difference]: With dead ends: 161 [2019-10-22 09:01:38,031 INFO L226 Difference]: Without dead ends: 161 [2019-10-22 09:01:38,032 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=309, Invalid=3473, Unknown=0, NotChecked=0, Total=3782 [2019-10-22 09:01:38,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2019-10-22 09:01:38,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 139. [2019-10-22 09:01:38,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-10-22 09:01:38,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 168 transitions. [2019-10-22 09:01:38,036 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 168 transitions. Word has length 50 [2019-10-22 09:01:38,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:38,036 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 168 transitions. [2019-10-22 09:01:38,036 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-10-22 09:01:38,036 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 168 transitions. [2019-10-22 09:01:38,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-22 09:01:38,037 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:38,037 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] [2019-10-22 09:01:38,238 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:38,238 INFO L410 AbstractCegarLoop]: === Iteration 19 === [sll_remove_lastErr15REQUIRES_VIOLATION, sll_remove_lastErr5REQUIRES_VIOLATION, sll_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr16REQUIRES_VIOLATION, sll_remove_lastErr3REQUIRES_VIOLATION, sll_remove_lastErr14REQUIRES_VIOLATION, sll_remove_lastErr4REQUIRES_VIOLATION, sll_remove_lastErr18REQUIRES_VIOLATION, sll_remove_lastErr17REQUIRES_VIOLATION, sll_remove_lastErr10REQUIRES_VIOLATION, sll_remove_lastErr19ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr0REQUIRES_VIOLATION, sll_remove_lastErr9REQUIRES_VIOLATION, sll_remove_lastErr20ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr21ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr1REQUIRES_VIOLATION, sll_remove_lastErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr13REQUIRES_VIOLATION, sll_remove_lastErr11REQUIRES_VIOLATION, sll_remove_lastErr2REQUIRES_VIOLATION, sll_remove_lastErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr12REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:38,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:38,238 INFO L82 PathProgramCache]: Analyzing trace with hash 518831993, now seen corresponding path program 1 times [2019-10-22 09:01:38,238 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:38,238 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005676872] [2019-10-22 09:01:38,238 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:38,239 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:38,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 09:01:38,702 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005676872] [2019-10-22 09:01:38,702 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784565132] [2019-10-22 09:01:38,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/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 09:01:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:38,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 75 conjunts are in the unsatisfiable core [2019-10-22 09:01:38,805 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:38,902 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:01:38,902 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 1 case distinctions, treesize of input 12 treesize of output 28 [2019-10-22 09:01:38,902 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 09:01:38,912 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-10-22 09:01:38,912 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 09:01:38,912 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2019-10-22 09:01:38,971 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-10-22 09:01:38,971 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 09:01:38,988 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:01:38,988 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 09:01:38,989 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:17 [2019-10-22 09:01:39,353 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2019-10-22 09:01:39,353 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 09:01:39,357 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:01:39,358 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 09:01:39,358 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:43, output treesize:32 [2019-10-22 09:01:39,448 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:01:39,448 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 31 [2019-10-22 09:01:39,449 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 09:01:39,450 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 09:01:39,450 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 09:01:39,457 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:01:39,458 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 09:01:39,458 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-10-22 09:01:39,459 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:25 [2019-10-22 09:01:39,459 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 09:01:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:39,473 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:01:39,473 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 39 [2019-10-22 09:01:39,473 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108667832] [2019-10-22 09:01:39,473 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-10-22 09:01:39,474 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:39,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-10-22 09:01:39,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1467, Unknown=0, NotChecked=0, Total=1560 [2019-10-22 09:01:39,474 INFO L87 Difference]: Start difference. First operand 139 states and 168 transitions. Second operand 40 states. [2019-10-22 09:01:41,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:41,501 INFO L93 Difference]: Finished difference Result 164 states and 198 transitions. [2019-10-22 09:01:41,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-22 09:01:41,501 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 52 [2019-10-22 09:01:41,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:41,502 INFO L225 Difference]: With dead ends: 164 [2019-10-22 09:01:41,502 INFO L226 Difference]: Without dead ends: 164 [2019-10-22 09:01:41,503 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=295, Invalid=3245, Unknown=0, NotChecked=0, Total=3540 [2019-10-22 09:01:41,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-10-22 09:01:41,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 145. [2019-10-22 09:01:41,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-10-22 09:01:41,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 176 transitions. [2019-10-22 09:01:41,507 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 176 transitions. Word has length 52 [2019-10-22 09:01:41,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:41,507 INFO L462 AbstractCegarLoop]: Abstraction has 145 states and 176 transitions. [2019-10-22 09:01:41,507 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-10-22 09:01:41,508 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 176 transitions. [2019-10-22 09:01:41,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-22 09:01:41,508 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:41,508 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] [2019-10-22 09:01:41,709 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:41,709 INFO L410 AbstractCegarLoop]: === Iteration 20 === [sll_remove_lastErr15REQUIRES_VIOLATION, sll_remove_lastErr5REQUIRES_VIOLATION, sll_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr16REQUIRES_VIOLATION, sll_remove_lastErr3REQUIRES_VIOLATION, sll_remove_lastErr14REQUIRES_VIOLATION, sll_remove_lastErr4REQUIRES_VIOLATION, sll_remove_lastErr18REQUIRES_VIOLATION, sll_remove_lastErr17REQUIRES_VIOLATION, sll_remove_lastErr10REQUIRES_VIOLATION, sll_remove_lastErr19ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr0REQUIRES_VIOLATION, sll_remove_lastErr9REQUIRES_VIOLATION, sll_remove_lastErr20ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr21ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr1REQUIRES_VIOLATION, sll_remove_lastErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr13REQUIRES_VIOLATION, sll_remove_lastErr11REQUIRES_VIOLATION, sll_remove_lastErr2REQUIRES_VIOLATION, sll_remove_lastErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr12REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:41,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:41,710 INFO L82 PathProgramCache]: Analyzing trace with hash 518831994, now seen corresponding path program 1 times [2019-10-22 09:01:41,710 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:41,710 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139222033] [2019-10-22 09:01:41,710 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:41,710 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:41,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:41,901 ERROR L253 erpolLogProxyWrapper]: Interpolant 2 not inductive [2019-10-22 09:01:41,905 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:221) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:863) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:385) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:332) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:193) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:305) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:356) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.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 09:01:41,909 INFO L168 Benchmark]: Toolchain (without parser) took 22075.09 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 475.5 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -182.5 MB). Peak memory consumption was 293.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:41,910 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:41,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 486.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -192.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:41,910 INFO L168 Benchmark]: Boogie Preprocessor took 79.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:41,910 INFO L168 Benchmark]: RCFGBuilder took 678.16 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: 60.3 MB). Peak memory consumption was 60.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:41,911 INFO L168 Benchmark]: TraceAbstraction took 20828.38 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 307.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -50.7 MB). Peak memory consumption was 257.0 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:41,912 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 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 486.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -192.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 79.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 678.16 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: 60.3 MB). Peak memory consumption was 60.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 20828.38 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 307.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -50.7 MB). Peak memory consumption was 257.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:221) 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 09:01:43,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:01:43,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:01:43,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:01:43,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:01:43,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:01:43,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:01:43,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:01:43,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:01:43,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:01:43,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:01:43,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:01:43,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:01:43,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:01:43,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:01:43,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:01:43,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:01:43,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:01:43,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:01:43,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:01:43,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:01:43,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:01:43,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:01:43,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:01:43,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:01:43,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:01:43,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:01:43,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:01:43,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:01:43,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:01:43,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:01:43,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:01:43,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:01:43,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:01:43,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:01:43,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:01:43,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:01:43,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:01:43,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:01:43,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:01:43,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:01:43,880 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-10-22 09:01:43,890 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:01:43,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:01:43,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:01:43,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:01:43,892 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:01:43,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:01:43,893 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:01:43,893 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:01:43,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:01:43,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:01:43,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:01:43,893 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 09:01:43,893 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 09:01:43,894 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 09:01:43,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:01:43,894 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 09:01:43,894 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 09:01:43,894 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:01:43,894 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:01:43,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:01:43,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:01:43,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:01:43,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:01:43,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:01:43,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:01:43,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:01:43,896 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-10-22 09:01:43,896 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 09:01:43,896 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 09:01:43,896 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_1725d920-8410-4438-9bd8-91bbd2dbe433/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 -> 13cb8f020c937b6a3b0b6c39b85904cffb8b3ba5 [2019-10-22 09:01:43,921 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:01:43,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:01:43,934 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:01:43,935 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:01:43,936 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:01:43,936 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/bin/uautomizer/../../sv-benchmarks/c/list-simple/sll2n_remove_all_reverse.i [2019-10-22 09:01:43,986 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/bin/uautomizer/data/17c99480c/e9bdb9835e4f4d96b6e7f1d94c83bfbf/FLAGc1dea757b [2019-10-22 09:01:44,418 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:01:44,419 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/sv-benchmarks/c/list-simple/sll2n_remove_all_reverse.i [2019-10-22 09:01:44,428 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/bin/uautomizer/data/17c99480c/e9bdb9835e4f4d96b6e7f1d94c83bfbf/FLAGc1dea757b [2019-10-22 09:01:44,439 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/bin/uautomizer/data/17c99480c/e9bdb9835e4f4d96b6e7f1d94c83bfbf [2019-10-22 09:01:44,442 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:01:44,444 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 09:01:44,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:44,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:01:44,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:01:44,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:44" (1/1) ... [2019-10-22 09:01:44,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23b139f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:44, skipping insertion in model container [2019-10-22 09:01:44,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:44" (1/1) ... [2019-10-22 09:01:44,456 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:01:44,485 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:01:44,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:44,825 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:01:44,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:44,940 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:01:44,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:44 WrapperNode [2019-10-22 09:01:44,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:44,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:01:44,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:01:44,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:01:44,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:44" (1/1) ... [2019-10-22 09:01:44,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:44" (1/1) ... [2019-10-22 09:01:44,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:44" (1/1) ... [2019-10-22 09:01:44,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:44" (1/1) ... [2019-10-22 09:01:44,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:44" (1/1) ... [2019-10-22 09:01:44,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:44" (1/1) ... [2019-10-22 09:01:45,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:44" (1/1) ... [2019-10-22 09:01:45,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:01:45,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:01:45,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:01:45,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:01:45,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/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 09:01:45,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 09:01:45,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:01:45,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-22 09:01:45,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-22 09:01:45,066 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-22 09:01:45,066 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-22 09:01:45,067 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-10-22 09:01:45,067 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_remove_last [2019-10-22 09:01:45,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 09:01:45,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-22 09:01:45,067 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-22 09:01:45,067 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-22 09:01:45,067 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-22 09:01:45,067 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-22 09:01:45,067 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-22 09:01:45,068 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-22 09:01:45,068 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-22 09:01:45,068 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-22 09:01:45,068 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-22 09:01:45,068 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-22 09:01:45,068 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-22 09:01:45,068 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-22 09:01:45,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-22 09:01:45,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-22 09:01:45,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-22 09:01:45,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-22 09:01:45,070 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-22 09:01:45,070 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-22 09:01:45,070 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-22 09:01:45,070 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-22 09:01:45,070 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-22 09:01:45,070 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-22 09:01:45,070 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-22 09:01:45,070 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-22 09:01:45,071 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-22 09:01:45,071 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-22 09:01:45,071 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-22 09:01:45,071 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-22 09:01:45,071 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-22 09:01:45,071 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-22 09:01:45,071 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-22 09:01:45,071 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-22 09:01:45,072 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-22 09:01:45,072 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-22 09:01:45,072 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-22 09:01:45,072 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-22 09:01:45,072 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-22 09:01:45,072 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-22 09:01:45,072 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-22 09:01:45,072 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-22 09:01:45,072 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-22 09:01:45,073 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-22 09:01:45,073 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-22 09:01:45,073 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-22 09:01:45,073 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-22 09:01:45,074 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-22 09:01:45,074 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-22 09:01:45,074 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-22 09:01:45,074 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-22 09:01:45,074 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-22 09:01:45,074 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-22 09:01:45,074 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-22 09:01:45,075 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-22 09:01:45,075 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-22 09:01:45,075 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-22 09:01:45,075 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-22 09:01:45,075 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-22 09:01:45,075 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-22 09:01:45,075 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-22 09:01:45,075 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-22 09:01:45,075 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-22 09:01:45,076 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-22 09:01:45,076 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-22 09:01:45,076 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-22 09:01:45,076 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-22 09:01:45,076 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-22 09:01:45,076 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-22 09:01:45,076 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-22 09:01:45,076 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-22 09:01:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-22 09:01:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-22 09:01:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-22 09:01:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-22 09:01:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-22 09:01:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-22 09:01:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-22 09:01:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-22 09:01:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-22 09:01:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-22 09:01:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-22 09:01:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-22 09:01:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-22 09:01:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-22 09:01:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-22 09:01:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-22 09:01:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-22 09:01:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-22 09:01:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-22 09:01:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-22 09:01:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-22 09:01:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-22 09:01:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-22 09:01:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-22 09:01:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-22 09:01:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-22 09:01:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-22 09:01:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-22 09:01:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-22 09:01:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-22 09:01:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-22 09:01:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-22 09:01:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-22 09:01:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-22 09:01:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-22 09:01:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-22 09:01:45,081 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-22 09:01:45,081 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-22 09:01:45,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 09:01:45,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-22 09:01:45,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-10-22 09:01:45,082 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-10-22 09:01:45,082 INFO L130 BoogieDeclarations]: Found specification of procedure sll_remove_last [2019-10-22 09:01:45,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-22 09:01:45,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 09:01:45,083 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 09:01:45,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 09:01:45,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-22 09:01:45,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 09:01:45,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:01:45,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-10-22 09:01:45,363 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-22 09:01:45,684 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:01:45,684 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-22 09:01:45,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:45 BoogieIcfgContainer [2019-10-22 09:01:45,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:01:45,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:01:45,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:01:45,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:01:45,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:01:44" (1/3) ... [2019-10-22 09:01:45,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f19597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:45, skipping insertion in model container [2019-10-22 09:01:45,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:44" (2/3) ... [2019-10-22 09:01:45,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f19597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:45, skipping insertion in model container [2019-10-22 09:01:45,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:45" (3/3) ... [2019-10-22 09:01:45,692 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_remove_all_reverse.i [2019-10-22 09:01:45,701 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:01:45,708 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 31 error locations. [2019-10-22 09:01:45,719 INFO L249 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2019-10-22 09:01:45,737 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:01:45,737 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 09:01:45,737 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:01:45,737 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:01:45,737 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:01:45,737 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:01:45,738 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:01:45,738 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:01:45,750 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2019-10-22 09:01:45,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 09:01:45,759 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:45,760 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:45,762 INFO L410 AbstractCegarLoop]: === Iteration 1 === [sll_remove_lastErr4REQUIRES_VIOLATION, sll_remove_lastErr15REQUIRES_VIOLATION, sll_remove_lastErr13REQUIRES_VIOLATION, sll_remove_lastErr3REQUIRES_VIOLATION, sll_remove_lastErr14REQUIRES_VIOLATION, sll_remove_lastErr1REQUIRES_VIOLATION, sll_remove_lastErr12REQUIRES_VIOLATION, sll_remove_lastErr19ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr2REQUIRES_VIOLATION, sll_remove_lastErr0REQUIRES_VIOLATION, sll_remove_lastErr11REQUIRES_VIOLATION, sll_remove_lastErr20ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr21ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr9REQUIRES_VIOLATION, sll_remove_lastErr7ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr10REQUIRES_VIOLATION, sll_remove_lastErr6ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr17REQUIRES_VIOLATION, sll_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, sll_remove_lastErr18REQUIRES_VIOLATION, sll_remove_lastErr5REQUIRES_VIOLATION, sll_remove_lastErr16REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-10-22 09:01:45,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:45,768 INFO L82 PathProgramCache]: Analyzing trace with hash 2025219408, now seen corresponding path program 1 times [2019-10-22 09:01:45,778 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:01:45,778 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1064742626] [2019-10-22 09:01:45,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1725d920-8410-4438-9bd8-91bbd2dbe433/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 09:01:46,005 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:01:46,006 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 09:01:46,010 INFO L168 Benchmark]: Toolchain (without parser) took 1565.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 948.3 MB in the beginning and 1.0 GB in the end (delta: -85.6 MB). Peak memory consumption was 55.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:46,010 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:46,011 INFO L168 Benchmark]: CACSL2BoogieTranslator took 496.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -168.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:46,012 INFO L168 Benchmark]: Boogie Preprocessor took 72.73 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:46,013 INFO L168 Benchmark]: RCFGBuilder took 671.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 59.6 MB). Peak memory consumption was 59.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:46,013 INFO L168 Benchmark]: TraceAbstraction took 321.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:46,016 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 496.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -168.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 72.73 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 671.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 59.6 MB). Peak memory consumption was 59.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 321.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 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...