./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/sll2c_insert_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 678e0110 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_037cc3d6-ed4d-4ba8-80ef-0dc9f17f32e7/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_037cc3d6-ed4d-4ba8-80ef-0dc9f17f32e7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_037cc3d6-ed4d-4ba8-80ef-0dc9f17f32e7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_037cc3d6-ed4d-4ba8-80ef-0dc9f17f32e7/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2c_insert_unequal.i -s /tmp/vcloud-vcloud-master/worker/run_dir_037cc3d6-ed4d-4ba8-80ef-0dc9f17f32e7/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_037cc3d6-ed4d-4ba8-80ef-0dc9f17f32e7/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 5d1129653fb10a71886e43e924ef9ab204bb5b8d ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 05:38:38,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:38:38,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:38:38,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:38:38,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:38:38,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:38:38,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:38:38,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:38:38,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:38:38,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:38:38,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:38:38,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:38:38,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:38:38,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:38:38,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:38:38,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:38:38,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:38:38,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:38:38,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:38:38,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:38:38,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:38:38,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:38:38,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:38:38,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:38:38,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:38:38,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:38:38,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:38:38,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:38:38,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:38:38,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:38:38,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:38:38,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:38:38,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:38:38,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:38:38,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:38:38,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:38:38,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:38:38,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:38:38,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:38:38,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:38:38,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:38:38,190 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_037cc3d6-ed4d-4ba8-80ef-0dc9f17f32e7/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 05:38:38,231 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:38:38,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:38:38,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:38:38,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:38:38,233 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 05:38:38,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:38:38,234 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 05:38:38,234 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 05:38:38,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 05:38:38,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 05:38:38,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:38:38,235 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 05:38:38,235 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 05:38:38,235 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 05:38:38,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 05:38:38,236 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 05:38:38,236 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 05:38:38,237 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 05:38:38,237 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:38:38,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:38:38,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 05:38:38,238 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 05:38:38,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 05:38:38,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:38:38,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:38:38,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 05:38:38,239 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 05:38:38,239 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 05:38:38,240 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 05:38:38,240 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_037cc3d6-ed4d-4ba8-80ef-0dc9f17f32e7/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 -> 5d1129653fb10a71886e43e924ef9ab204bb5b8d [2019-11-20 05:38:38,415 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:38:38,427 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:38:38,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:38:38,433 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:38:38,433 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:38:38,434 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_037cc3d6-ed4d-4ba8-80ef-0dc9f17f32e7/bin/uautomizer/../../sv-benchmarks/c/list-simple/sll2c_insert_unequal.i [2019-11-20 05:38:38,496 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_037cc3d6-ed4d-4ba8-80ef-0dc9f17f32e7/bin/uautomizer/data/491d2a10b/1cf4742b841e495698b5bd44070e4d59/FLAG79e9654b8 [2019-11-20 05:38:38,996 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:38:38,997 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_037cc3d6-ed4d-4ba8-80ef-0dc9f17f32e7/sv-benchmarks/c/list-simple/sll2c_insert_unequal.i [2019-11-20 05:38:39,020 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_037cc3d6-ed4d-4ba8-80ef-0dc9f17f32e7/bin/uautomizer/data/491d2a10b/1cf4742b841e495698b5bd44070e4d59/FLAG79e9654b8 [2019-11-20 05:38:39,332 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_037cc3d6-ed4d-4ba8-80ef-0dc9f17f32e7/bin/uautomizer/data/491d2a10b/1cf4742b841e495698b5bd44070e4d59 [2019-11-20 05:38:39,335 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:38:39,336 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 05:38:39,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:38:39,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:38:39,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:38:39,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:38:39" (1/1) ... [2019-11-20 05:38:39,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45912668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:39, skipping insertion in model container [2019-11-20 05:38:39,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:38:39" (1/1) ... [2019-11-20 05:38:39,355 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:38:39,429 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:38:39,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:38:39,975 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:38:40,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:38:40,116 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:38:40,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:40 WrapperNode [2019-11-20 05:38:40,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:38:40,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:38:40,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:38:40,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:38:40,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:40" (1/1) ... [2019-11-20 05:38:40,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:40" (1/1) ... [2019-11-20 05:38:40,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:40" (1/1) ... [2019-11-20 05:38:40,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:40" (1/1) ... [2019-11-20 05:38:40,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:40" (1/1) ... [2019-11-20 05:38:40,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:40" (1/1) ... [2019-11-20 05:38:40,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:40" (1/1) ... [2019-11-20 05:38:40,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:38:40,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:38:40,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:38:40,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:38:40,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037cc3d6-ed4d-4ba8-80ef-0dc9f17f32e7/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:38:40,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 05:38:40,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:38:40,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 05:38:40,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 05:38:40,296 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-20 05:38:40,296 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-20 05:38:40,296 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-11-20 05:38:40,297 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2019-11-20 05:38:40,297 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_insert [2019-11-20 05:38:40,297 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 05:38:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-20 05:38:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 05:38:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 05:38:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 05:38:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 05:38:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 05:38:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 05:38:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 05:38:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 05:38:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 05:38:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 05:38:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 05:38:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 05:38:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 05:38:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 05:38:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 05:38:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 05:38:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 05:38:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 05:38:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 05:38:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 05:38:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 05:38:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 05:38:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 05:38:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 05:38:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 05:38:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 05:38:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 05:38:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 05:38:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 05:38:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 05:38:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 05:38:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 05:38:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 05:38:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 05:38:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 05:38:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 05:38:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 05:38:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 05:38:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 05:38:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 05:38:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 05:38:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 05:38:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 05:38:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 05:38:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 05:38:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 05:38:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 05:38:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 05:38:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 05:38:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 05:38:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 05:38:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 05:38:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 05:38:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 05:38:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 05:38:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 05:38:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-20 05:38:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 05:38:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 05:38:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 05:38:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 05:38:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 05:38:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 05:38:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 05:38:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 05:38:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 05:38:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 05:38:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 05:38:40,313 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 05:38:40,313 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 05:38:40,313 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 05:38:40,313 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 05:38:40,313 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 05:38:40,314 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 05:38:40,314 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 05:38:40,314 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 05:38:40,314 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 05:38:40,314 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 05:38:40,315 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 05:38:40,315 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 05:38:40,315 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 05:38:40,315 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 05:38:40,315 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 05:38:40,316 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 05:38:40,316 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 05:38:40,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 05:38:40,316 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 05:38:40,316 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 05:38:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 05:38:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 05:38:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 05:38:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 05:38:40,318 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 05:38:40,318 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 05:38:40,318 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 05:38:40,318 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 05:38:40,318 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 05:38:40,319 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 05:38:40,319 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 05:38:40,319 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 05:38:40,319 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 05:38:40,319 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 05:38:40,320 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 05:38:40,320 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 05:38:40,320 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 05:38:40,320 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-20 05:38:40,320 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-20 05:38:40,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 05:38:40,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 05:38:40,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 05:38:40,321 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-11-20 05:38:40,322 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2019-11-20 05:38:40,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 05:38:40,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 05:38:40,322 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_insert [2019-11-20 05:38:40,322 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 05:38:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 05:38:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-20 05:38:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 05:38:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 05:38:40,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:38:40,764 INFO L689 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-20 05:38:41,580 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:38:41,581 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 05:38:41,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:38:41 BoogieIcfgContainer [2019-11-20 05:38:41,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:38:41,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 05:38:41,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 05:38:41,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 05:38:41,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:38:39" (1/3) ... [2019-11-20 05:38:41,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf82ed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:38:41, skipping insertion in model container [2019-11-20 05:38:41,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:40" (2/3) ... [2019-11-20 05:38:41,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf82ed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:38:41, skipping insertion in model container [2019-11-20 05:38:41,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:38:41" (3/3) ... [2019-11-20 05:38:41,590 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_insert_unequal.i [2019-11-20 05:38:41,601 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 05:38:41,609 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 61 error locations. [2019-11-20 05:38:41,619 INFO L249 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2019-11-20 05:38:41,640 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 05:38:41,641 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 05:38:41,641 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 05:38:41,641 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 05:38:41,641 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 05:38:41,641 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 05:38:41,641 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 05:38:41,641 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 05:38:41,662 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2019-11-20 05:38:41,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-20 05:38:41,670 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:38:41,671 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:38:41,671 INFO L410 AbstractCegarLoop]: === Iteration 1 === [sll_circular_insertErr0REQUIRES_VIOLATION, sll_circular_insertErr11REQUIRES_VIOLATION, sll_circular_insertErr10REQUIRES_VIOLATION, sll_circular_insertErr21REQUIRES_VIOLATION, sll_circular_insertErr12REQUIRES_VIOLATION, sll_circular_insertErr1REQUIRES_VIOLATION, sll_circular_insertErr3REQUIRES_VIOLATION, sll_circular_insertErr2REQUIRES_VIOLATION, sll_circular_insertErr13REQUIRES_VIOLATION, sll_circular_insertErr4REQUIRES_VIOLATION, sll_circular_insertErr15REQUIRES_VIOLATION, sll_circular_insertErr14REQUIRES_VIOLATION, sll_circular_insertErr16REQUIRES_VIOLATION, sll_circular_insertErr5REQUIRES_VIOLATION, sll_circular_insertErr7REQUIRES_VIOLATION, sll_circular_insertErr6REQUIRES_VIOLATION, sll_circular_insertErr17REQUIRES_VIOLATION, sll_circular_insertErr8REQUIRES_VIOLATION, sll_circular_insertErr19REQUIRES_VIOLATION, sll_circular_insertErr18REQUIRES_VIOLATION, sll_circular_insertErr20REQUIRES_VIOLATION, sll_circular_insertErr9REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 05:38:41,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:38:41,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1334384549, now seen corresponding path program 1 times [2019-11-20 05:38:41,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:38:41,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [822478545] [2019-11-20 05:38:41,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037cc3d6-ed4d-4ba8-80ef-0dc9f17f32e7/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:38:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:38:41,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 05:38:42,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:38:42,077 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:38:42,078 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:38:42,087 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:38:42,087 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:38:42,087 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 05:38:42,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:38:42,103 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:38:42,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:38:42,140 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [822478545] [2019-11-20 05:38:42,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:38:42,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 05:38:42,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747064649] [2019-11-20 05:38:42,151 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:38:42,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:38:42,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:38:42,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:38:42,168 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 3 states. [2019-11-20 05:38:42,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:38:42,563 INFO L93 Difference]: Finished difference Result 155 states and 168 transitions. [2019-11-20 05:38:42,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:38:42,565 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-11-20 05:38:42,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:38:42,584 INFO L225 Difference]: With dead ends: 155 [2019-11-20 05:38:42,584 INFO L226 Difference]: Without dead ends: 148 [2019-11-20 05:38:42,587 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:38:42,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-11-20 05:38:42,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2019-11-20 05:38:42,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-11-20 05:38:42,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 157 transitions. [2019-11-20 05:38:42,693 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 157 transitions. Word has length 12 [2019-11-20 05:38:42,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:38:42,694 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 157 transitions. [2019-11-20 05:38:42,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:38:42,695 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 157 transitions. [2019-11-20 05:38:42,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-20 05:38:42,696 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:38:42,696 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:38:42,899 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:38:42,900 INFO L410 AbstractCegarLoop]: === Iteration 2 === [sll_circular_insertErr0REQUIRES_VIOLATION, sll_circular_insertErr11REQUIRES_VIOLATION, sll_circular_insertErr10REQUIRES_VIOLATION, sll_circular_insertErr21REQUIRES_VIOLATION, sll_circular_insertErr12REQUIRES_VIOLATION, sll_circular_insertErr1REQUIRES_VIOLATION, sll_circular_insertErr3REQUIRES_VIOLATION, sll_circular_insertErr2REQUIRES_VIOLATION, sll_circular_insertErr13REQUIRES_VIOLATION, sll_circular_insertErr4REQUIRES_VIOLATION, sll_circular_insertErr15REQUIRES_VIOLATION, sll_circular_insertErr14REQUIRES_VIOLATION, sll_circular_insertErr16REQUIRES_VIOLATION, sll_circular_insertErr5REQUIRES_VIOLATION, sll_circular_insertErr7REQUIRES_VIOLATION, sll_circular_insertErr6REQUIRES_VIOLATION, sll_circular_insertErr17REQUIRES_VIOLATION, sll_circular_insertErr8REQUIRES_VIOLATION, sll_circular_insertErr19REQUIRES_VIOLATION, sll_circular_insertErr18REQUIRES_VIOLATION, sll_circular_insertErr20REQUIRES_VIOLATION, sll_circular_insertErr9REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 05:38:42,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:38:42,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1334384548, now seen corresponding path program 1 times [2019-11-20 05:38:42,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:38:42,905 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1202402820] [2019-11-20 05:38:42,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037cc3d6-ed4d-4ba8-80ef-0dc9f17f32e7/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:38:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:38:43,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 05:38:43,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:38:43,219 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:38:43,219 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:38:43,234 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:38:43,235 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:38:43,235 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 05:38:43,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:38:43,248 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:38:43,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:38:43,304 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1202402820] [2019-11-20 05:38:43,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:38:43,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 05:38:43,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449523218] [2019-11-20 05:38:43,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 05:38:43,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:38:43,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 05:38:43,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:38:43,307 INFO L87 Difference]: Start difference. First operand 148 states and 157 transitions. Second operand 4 states. [2019-11-20 05:38:44,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:38:44,171 INFO L93 Difference]: Finished difference Result 146 states and 155 transitions. [2019-11-20 05:38:44,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:38:44,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-20 05:38:44,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:38:44,176 INFO L225 Difference]: With dead ends: 146 [2019-11-20 05:38:44,176 INFO L226 Difference]: Without dead ends: 146 [2019-11-20 05:38:44,176 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:38:44,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-11-20 05:38:44,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2019-11-20 05:38:44,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-11-20 05:38:44,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 155 transitions. [2019-11-20 05:38:44,194 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 155 transitions. Word has length 12 [2019-11-20 05:38:44,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:38:44,195 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 155 transitions. [2019-11-20 05:38:44,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 05:38:44,196 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 155 transitions. [2019-11-20 05:38:44,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-20 05:38:44,197 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:38:44,197 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:38:44,400 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:38:44,400 INFO L410 AbstractCegarLoop]: === Iteration 3 === [sll_circular_insertErr0REQUIRES_VIOLATION, sll_circular_insertErr11REQUIRES_VIOLATION, sll_circular_insertErr10REQUIRES_VIOLATION, sll_circular_insertErr21REQUIRES_VIOLATION, sll_circular_insertErr12REQUIRES_VIOLATION, sll_circular_insertErr1REQUIRES_VIOLATION, sll_circular_insertErr3REQUIRES_VIOLATION, sll_circular_insertErr2REQUIRES_VIOLATION, sll_circular_insertErr13REQUIRES_VIOLATION, sll_circular_insertErr4REQUIRES_VIOLATION, sll_circular_insertErr15REQUIRES_VIOLATION, sll_circular_insertErr14REQUIRES_VIOLATION, sll_circular_insertErr16REQUIRES_VIOLATION, sll_circular_insertErr5REQUIRES_VIOLATION, sll_circular_insertErr7REQUIRES_VIOLATION, sll_circular_insertErr6REQUIRES_VIOLATION, sll_circular_insertErr17REQUIRES_VIOLATION, sll_circular_insertErr8REQUIRES_VIOLATION, sll_circular_insertErr19REQUIRES_VIOLATION, sll_circular_insertErr18REQUIRES_VIOLATION, sll_circular_insertErr20REQUIRES_VIOLATION, sll_circular_insertErr9REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 05:38:44,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:38:44,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1397157121, now seen corresponding path program 1 times [2019-11-20 05:38:44,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:38:44,403 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1982620400] [2019-11-20 05:38:44,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037cc3d6-ed4d-4ba8-80ef-0dc9f17f32e7/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:38:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:38:44,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 05:38:44,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:38:44,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:38:44,717 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:38:44,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:38:44,760 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1982620400] [2019-11-20 05:38:44,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:38:44,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-20 05:38:44,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031133974] [2019-11-20 05:38:44,761 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 05:38:44,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:38:44,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 05:38:44,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-20 05:38:44,762 INFO L87 Difference]: Start difference. First operand 146 states and 155 transitions. Second operand 8 states. [2019-11-20 05:38:44,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:38:44,913 INFO L93 Difference]: Finished difference Result 153 states and 163 transitions. [2019-11-20 05:38:44,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 05:38:44,915 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-11-20 05:38:44,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:38:44,917 INFO L225 Difference]: With dead ends: 153 [2019-11-20 05:38:44,917 INFO L226 Difference]: Without dead ends: 153 [2019-11-20 05:38:44,917 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-11-20 05:38:44,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-11-20 05:38:44,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 147. [2019-11-20 05:38:44,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-11-20 05:38:44,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 156 transitions. [2019-11-20 05:38:44,935 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 156 transitions. Word has length 19 [2019-11-20 05:38:44,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:38:44,936 INFO L462 AbstractCegarLoop]: Abstraction has 147 states and 156 transitions. [2019-11-20 05:38:44,936 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 05:38:44,936 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 156 transitions. [2019-11-20 05:38:44,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-20 05:38:44,937 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:38:44,938 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:38:45,149 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:38:45,149 INFO L410 AbstractCegarLoop]: === Iteration 4 === [sll_circular_insertErr0REQUIRES_VIOLATION, sll_circular_insertErr11REQUIRES_VIOLATION, sll_circular_insertErr10REQUIRES_VIOLATION, sll_circular_insertErr21REQUIRES_VIOLATION, sll_circular_insertErr12REQUIRES_VIOLATION, sll_circular_insertErr1REQUIRES_VIOLATION, sll_circular_insertErr3REQUIRES_VIOLATION, sll_circular_insertErr2REQUIRES_VIOLATION, sll_circular_insertErr13REQUIRES_VIOLATION, sll_circular_insertErr4REQUIRES_VIOLATION, sll_circular_insertErr15REQUIRES_VIOLATION, sll_circular_insertErr14REQUIRES_VIOLATION, sll_circular_insertErr16REQUIRES_VIOLATION, sll_circular_insertErr5REQUIRES_VIOLATION, sll_circular_insertErr7REQUIRES_VIOLATION, sll_circular_insertErr6REQUIRES_VIOLATION, sll_circular_insertErr17REQUIRES_VIOLATION, sll_circular_insertErr8REQUIRES_VIOLATION, sll_circular_insertErr19REQUIRES_VIOLATION, sll_circular_insertErr18REQUIRES_VIOLATION, sll_circular_insertErr20REQUIRES_VIOLATION, sll_circular_insertErr9REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 05:38:45,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:38:45,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1391397525, now seen corresponding path program 1 times [2019-11-20 05:38:45,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:38:45,151 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [838436651] [2019-11-20 05:38:45,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037cc3d6-ed4d-4ba8-80ef-0dc9f17f32e7/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:38:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:38:45,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 05:38:45,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:38:45,450 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:38:45,451 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:38:45,454 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:38:45,455 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:38:45,455 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 05:38:45,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 05:38:45,507 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:38:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 05:38:45,610 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [838436651] [2019-11-20 05:38:45,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:38:45,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 05:38:45,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516111489] [2019-11-20 05:38:45,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 05:38:45,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:38:45,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 05:38:45,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-20 05:38:45,613 INFO L87 Difference]: Start difference. First operand 147 states and 156 transitions. Second operand 6 states. [2019-11-20 05:38:46,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:38:46,419 INFO L93 Difference]: Finished difference Result 147 states and 157 transitions. [2019-11-20 05:38:46,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 05:38:46,419 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2019-11-20 05:38:46,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:38:46,423 INFO L225 Difference]: With dead ends: 147 [2019-11-20 05:38:46,424 INFO L226 Difference]: Without dead ends: 147 [2019-11-20 05:38:46,424 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 05:38:46,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-11-20 05:38:46,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2019-11-20 05:38:46,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-11-20 05:38:46,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 155 transitions. [2019-11-20 05:38:46,437 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 155 transitions. Word has length 28 [2019-11-20 05:38:46,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:38:46,438 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 155 transitions. [2019-11-20 05:38:46,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 05:38:46,438 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 155 transitions. [2019-11-20 05:38:46,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-20 05:38:46,439 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:38:46,440 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:38:46,643 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:38:46,644 INFO L410 AbstractCegarLoop]: === Iteration 5 === [sll_circular_insertErr0REQUIRES_VIOLATION, sll_circular_insertErr11REQUIRES_VIOLATION, sll_circular_insertErr10REQUIRES_VIOLATION, sll_circular_insertErr21REQUIRES_VIOLATION, sll_circular_insertErr12REQUIRES_VIOLATION, sll_circular_insertErr1REQUIRES_VIOLATION, sll_circular_insertErr3REQUIRES_VIOLATION, sll_circular_insertErr2REQUIRES_VIOLATION, sll_circular_insertErr13REQUIRES_VIOLATION, sll_circular_insertErr4REQUIRES_VIOLATION, sll_circular_insertErr15REQUIRES_VIOLATION, sll_circular_insertErr14REQUIRES_VIOLATION, sll_circular_insertErr16REQUIRES_VIOLATION, sll_circular_insertErr5REQUIRES_VIOLATION, sll_circular_insertErr7REQUIRES_VIOLATION, sll_circular_insertErr6REQUIRES_VIOLATION, sll_circular_insertErr17REQUIRES_VIOLATION, sll_circular_insertErr8REQUIRES_VIOLATION, sll_circular_insertErr19REQUIRES_VIOLATION, sll_circular_insertErr18REQUIRES_VIOLATION, sll_circular_insertErr20REQUIRES_VIOLATION, sll_circular_insertErr9REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 05:38:46,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:38:46,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1391397524, now seen corresponding path program 1 times [2019-11-20 05:38:46,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:38:46,645 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1910165829] [2019-11-20 05:38:46,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037cc3d6-ed4d-4ba8-80ef-0dc9f17f32e7/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:38:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:38:46,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 05:38:46,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:38:46,951 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:38:46,952 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:38:46,960 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:38:46,961 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:38:46,961 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 05:38:47,051 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 05:38:47,052 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:38:47,428 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 05:38:47,428 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1910165829] [2019-11-20 05:38:47,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:38:47,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-20 05:38:47,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919303576] [2019-11-20 05:38:47,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 05:38:47,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:38:47,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 05:38:47,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-20 05:38:47,430 INFO L87 Difference]: Start difference. First operand 146 states and 155 transitions. Second operand 10 states. [2019-11-20 05:38:48,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:38:48,885 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2019-11-20 05:38:48,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 05:38:48,891 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2019-11-20 05:38:48,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:38:48,892 INFO L225 Difference]: With dead ends: 146 [2019-11-20 05:38:48,893 INFO L226 Difference]: Without dead ends: 146 [2019-11-20 05:38:48,893 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-20 05:38:48,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-11-20 05:38:48,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2019-11-20 05:38:48,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-11-20 05:38:48,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 154 transitions. [2019-11-20 05:38:48,903 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 154 transitions. Word has length 28 [2019-11-20 05:38:48,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:38:48,904 INFO L462 AbstractCegarLoop]: Abstraction has 145 states and 154 transitions. [2019-11-20 05:38:48,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 05:38:48,904 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 154 transitions. [2019-11-20 05:38:48,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-20 05:38:48,905 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:38:48,906 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-20 05:38:49,109 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:38:49,110 INFO L410 AbstractCegarLoop]: === Iteration 6 === [sll_circular_insertErr0REQUIRES_VIOLATION, sll_circular_insertErr11REQUIRES_VIOLATION, sll_circular_insertErr10REQUIRES_VIOLATION, sll_circular_insertErr21REQUIRES_VIOLATION, sll_circular_insertErr12REQUIRES_VIOLATION, sll_circular_insertErr1REQUIRES_VIOLATION, sll_circular_insertErr3REQUIRES_VIOLATION, sll_circular_insertErr2REQUIRES_VIOLATION, sll_circular_insertErr13REQUIRES_VIOLATION, sll_circular_insertErr4REQUIRES_VIOLATION, sll_circular_insertErr15REQUIRES_VIOLATION, sll_circular_insertErr14REQUIRES_VIOLATION, sll_circular_insertErr16REQUIRES_VIOLATION, sll_circular_insertErr5REQUIRES_VIOLATION, sll_circular_insertErr7REQUIRES_VIOLATION, sll_circular_insertErr6REQUIRES_VIOLATION, sll_circular_insertErr17REQUIRES_VIOLATION, sll_circular_insertErr8REQUIRES_VIOLATION, sll_circular_insertErr19REQUIRES_VIOLATION, sll_circular_insertErr18REQUIRES_VIOLATION, sll_circular_insertErr20REQUIRES_VIOLATION, sll_circular_insertErr9REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 05:38:49,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:38:49,110 INFO L82 PathProgramCache]: Analyzing trace with hash -394089265, now seen corresponding path program 1 times [2019-11-20 05:38:49,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:38:49,111 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [847862231] [2019-11-20 05:38:49,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037cc3d6-ed4d-4ba8-80ef-0dc9f17f32e7/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:38:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:38:49,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 05:38:49,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:38:49,396 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:38:49,396 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:38:49,398 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:38:49,399 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:38:49,399 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 05:38:49,499 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:38:49,499 INFO L377 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 14 treesize of output 30 [2019-11-20 05:38:49,500 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:38:49,523 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-20 05:38:49,524 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:38:49,524 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2019-11-20 05:38:49,540 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 05:38:49,540 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:38:49,761 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 05:38:49,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [847862231] [2019-11-20 05:38:49,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:38:49,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-11-20 05:38:49,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243735407] [2019-11-20 05:38:49,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 05:38:49,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:38:49,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 05:38:49,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-20 05:38:49,764 INFO L87 Difference]: Start difference. First operand 145 states and 154 transitions. Second operand 9 states. [2019-11-20 05:39:18,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:39:18,834 INFO L93 Difference]: Finished difference Result 177 states and 191 transitions. [2019-11-20 05:39:18,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 05:39:18,834 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2019-11-20 05:39:18,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:39:18,836 INFO L225 Difference]: With dead ends: 177 [2019-11-20 05:39:18,836 INFO L226 Difference]: Without dead ends: 177 [2019-11-20 05:39:18,837 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-11-20 05:39:18,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2019-11-20 05:39:18,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 144. [2019-11-20 05:39:18,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-20 05:39:18,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 153 transitions. [2019-11-20 05:39:18,845 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 153 transitions. Word has length 31 [2019-11-20 05:39:18,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:39:18,846 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 153 transitions. [2019-11-20 05:39:18,846 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 05:39:18,846 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 153 transitions. [2019-11-20 05:39:18,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-20 05:39:18,847 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:39:18,847 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-20 05:39:19,051 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:39:19,052 INFO L410 AbstractCegarLoop]: === Iteration 7 === [sll_circular_insertErr0REQUIRES_VIOLATION, sll_circular_insertErr11REQUIRES_VIOLATION, sll_circular_insertErr10REQUIRES_VIOLATION, sll_circular_insertErr21REQUIRES_VIOLATION, sll_circular_insertErr12REQUIRES_VIOLATION, sll_circular_insertErr1REQUIRES_VIOLATION, sll_circular_insertErr3REQUIRES_VIOLATION, sll_circular_insertErr2REQUIRES_VIOLATION, sll_circular_insertErr13REQUIRES_VIOLATION, sll_circular_insertErr4REQUIRES_VIOLATION, sll_circular_insertErr15REQUIRES_VIOLATION, sll_circular_insertErr14REQUIRES_VIOLATION, sll_circular_insertErr16REQUIRES_VIOLATION, sll_circular_insertErr5REQUIRES_VIOLATION, sll_circular_insertErr7REQUIRES_VIOLATION, sll_circular_insertErr6REQUIRES_VIOLATION, sll_circular_insertErr17REQUIRES_VIOLATION, sll_circular_insertErr8REQUIRES_VIOLATION, sll_circular_insertErr19REQUIRES_VIOLATION, sll_circular_insertErr18REQUIRES_VIOLATION, sll_circular_insertErr20REQUIRES_VIOLATION, sll_circular_insertErr9REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 05:39:19,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:39:19,052 INFO L82 PathProgramCache]: Analyzing trace with hash -394089264, now seen corresponding path program 1 times [2019-11-20 05:39:19,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:39:19,053 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1742326498] [2019-11-20 05:39:19,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037cc3d6-ed4d-4ba8-80ef-0dc9f17f32e7/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:39:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:39:19,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-20 05:39:19,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:39:19,344 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:39:19,344 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:39:19,353 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:39:19,357 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:39:19,357 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:39:19,366 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:39:19,366 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:39:19,366 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-20 05:39:19,549 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:39:19,550 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2019-11-20 05:39:19,551 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:39:19,581 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:39:19,587 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2019-11-20 05:39:19,588 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:39:19,602 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:39:19,603 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:39:19,603 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:27, output treesize:20 [2019-11-20 05:39:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:39:19,671 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:39:19,790 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:39:20,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:39:20,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:39:20,020 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:39:20,023 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:39:20,032 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:39:20,033 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:39:20,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:39:20,046 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:39:20,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:39:25,115 WARN L191 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2019-11-20 05:39:25,140 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:39:27,730 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2019-11-20 05:39:28,451 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:39:28,451 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1742326498] [2019-11-20 05:39:28,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:39:28,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2019-11-20 05:39:28,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795691324] [2019-11-20 05:39:28,452 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-20 05:39:28,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:39:28,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 05:39:28,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=201, Unknown=1, NotChecked=0, Total=240 [2019-11-20 05:39:28,462 INFO L87 Difference]: Start difference. First operand 144 states and 153 transitions. Second operand 16 states. [2019-11-20 05:39:34,743 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv1 1) (select |c_#valid| c_node_create_~temp~0.base)) (exists ((|node_create_#t~malloc2.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |node_create_#t~malloc2.base|) (_ bv0 1)) (= (store |c_old(#length)| |node_create_#t~malloc2.base| (_ bv8 32)) |c_#length|))) (= (bvadd (select |c_#length| c_node_create_~temp~0.base) (_ bv4294967288 32)) (_ bv0 32)) (forall ((v_sll_circular_create_~last~0.offset_BEFORE_CALL_2 (_ BitVec 32)) (v_sll_circular_create_~last~0.base_BEFORE_CALL_4 (_ BitVec 32)) (|v_node_create_#t~malloc2.base_31| (_ BitVec 32))) (let ((.cse0 (bvadd v_sll_circular_create_~last~0.offset_BEFORE_CALL_2 (_ bv4 32)))) (or (not (bvsle v_sll_circular_create_~last~0.offset_BEFORE_CALL_2 .cse0)) (exists ((v_prenex_2 (_ BitVec 32))) (and (not (bvsle (bvadd v_sll_circular_create_~last~0.offset_BEFORE_CALL_2 (_ bv4 32)) (select (store |c_old(#length)| v_prenex_2 (_ bv8 32)) v_sll_circular_create_~last~0.base_BEFORE_CALL_4))) (= (_ bv0 1) (select |c_old(#valid)| v_prenex_2)))) (bvsle .cse0 (select (store |c_#length| |v_node_create_#t~malloc2.base_31| (_ bv8 32)) v_sll_circular_create_~last~0.base_BEFORE_CALL_4)) (not (bvsle (_ bv0 32) v_sll_circular_create_~last~0.offset_BEFORE_CALL_2)) (not (= (select |c_#valid| |v_node_create_#t~malloc2.base_31|) (_ bv0 1)))))) (= (_ bv0 32) c_node_create_~temp~0.offset)) is different from false [2019-11-20 05:39:54,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:39:54,389 INFO L93 Difference]: Finished difference Result 163 states and 174 transitions. [2019-11-20 05:39:54,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 05:39:54,389 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 31 [2019-11-20 05:39:54,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:39:54,391 INFO L225 Difference]: With dead ends: 163 [2019-11-20 05:39:54,391 INFO L226 Difference]: Without dead ends: 163 [2019-11-20 05:39:54,392 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=74, Invalid=348, Unknown=2, NotChecked=38, Total=462 [2019-11-20 05:39:54,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2019-11-20 05:39:54,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 143. [2019-11-20 05:39:54,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2019-11-20 05:39:54,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 152 transitions. [2019-11-20 05:39:54,400 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 152 transitions. Word has length 31 [2019-11-20 05:39:54,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:39:54,400 INFO L462 AbstractCegarLoop]: Abstraction has 143 states and 152 transitions. [2019-11-20 05:39:54,400 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-20 05:39:54,401 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 152 transitions. [2019-11-20 05:39:54,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-20 05:39:54,402 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:39:54,402 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:39:54,603 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:39:54,603 INFO L410 AbstractCegarLoop]: === Iteration 8 === [sll_circular_insertErr0REQUIRES_VIOLATION, sll_circular_insertErr11REQUIRES_VIOLATION, sll_circular_insertErr10REQUIRES_VIOLATION, sll_circular_insertErr21REQUIRES_VIOLATION, sll_circular_insertErr12REQUIRES_VIOLATION, sll_circular_insertErr1REQUIRES_VIOLATION, sll_circular_insertErr3REQUIRES_VIOLATION, sll_circular_insertErr2REQUIRES_VIOLATION, sll_circular_insertErr13REQUIRES_VIOLATION, sll_circular_insertErr4REQUIRES_VIOLATION, sll_circular_insertErr15REQUIRES_VIOLATION, sll_circular_insertErr14REQUIRES_VIOLATION, sll_circular_insertErr16REQUIRES_VIOLATION, sll_circular_insertErr5REQUIRES_VIOLATION, sll_circular_insertErr7REQUIRES_VIOLATION, sll_circular_insertErr6REQUIRES_VIOLATION, sll_circular_insertErr17REQUIRES_VIOLATION, sll_circular_insertErr8REQUIRES_VIOLATION, sll_circular_insertErr19REQUIRES_VIOLATION, sll_circular_insertErr18REQUIRES_VIOLATION, sll_circular_insertErr20REQUIRES_VIOLATION, sll_circular_insertErr9REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 05:39:54,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:39:54,604 INFO L82 PathProgramCache]: Analyzing trace with hash 107917134, now seen corresponding path program 1 times [2019-11-20 05:39:54,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:39:54,604 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1519972813] [2019-11-20 05:39:54,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037cc3d6-ed4d-4ba8-80ef-0dc9f17f32e7/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:39:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:39:55,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-20 05:39:55,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:39:55,069 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:39:55,070 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:39:55,073 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:39:55,073 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:39:55,074 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 05:39:55,313 INFO L343 Elim1Store]: treesize reduction 27, result has 57.1 percent of original size [2019-11-20 05:39:55,313 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 49 [2019-11-20 05:39:55,314 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:39:55,343 INFO L567 ElimStorePlain]: treesize reduction 17, result has 54.1 percent of original size [2019-11-20 05:39:55,344 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 05:39:55,344 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:20 [2019-11-20 05:39:55,504 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:39:55,504 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 50 [2019-11-20 05:39:55,505 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:39:55,561 INFO L567 ElimStorePlain]: treesize reduction 28, result has 41.7 percent of original size [2019-11-20 05:39:55,562 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 05:39:55,562 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:20 [2019-11-20 05:39:55,605 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 05:39:55,605 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:40:07,592 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:40:07,593 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Alternating quantifiers not yet supported at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) 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:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-20 05:40:07,597 INFO L168 Benchmark]: Toolchain (without parser) took 88260.91 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 297.8 MB). Free memory was 938.0 MB in the beginning and 980.8 MB in the end (delta: -42.8 MB). Peak memory consumption was 255.0 MB. Max. memory is 11.5 GB. [2019-11-20 05:40:07,597 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:40:07,598 INFO L168 Benchmark]: CACSL2BoogieTranslator took 780.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -151.5 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-20 05:40:07,598 INFO L168 Benchmark]: Boogie Preprocessor took 96.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:40:07,599 INFO L168 Benchmark]: RCFGBuilder took 1367.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 77.9 MB). Peak memory consumption was 77.9 MB. Max. memory is 11.5 GB. [2019-11-20 05:40:07,599 INFO L168 Benchmark]: TraceAbstraction took 86012.44 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 176.2 MB). Free memory was 1.0 GB in the beginning and 980.8 MB in the end (delta: 30.8 MB). Peak memory consumption was 207.0 MB. Max. memory is 11.5 GB. [2019-11-20 05:40:07,602 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 780.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -151.5 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 96.61 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 1367.29 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: 77.9 MB). Peak memory consumption was 77.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 86012.44 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 176.2 MB). Free memory was 1.0 GB in the beginning and 980.8 MB in the end (delta: 30.8 MB). Peak memory consumption was 207.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Alternating quantifiers not yet supported: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...