./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2c_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_5549e568-0e1a-4bb7-b417-65c815f865ec/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2c_insert_unequal.i -s /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/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 66b1645e6497ed5e04695d784e7a77b914e4f212 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 01:43:19,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 01:43:19,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 01:43:19,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 01:43:19,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 01:43:19,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 01:43:19,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 01:43:19,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 01:43:19,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 01:43:19,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 01:43:19,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 01:43:19,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 01:43:19,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 01:43:19,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 01:43:19,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 01:43:19,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 01:43:19,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 01:43:19,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 01:43:19,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 01:43:19,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 01:43:19,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 01:43:19,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 01:43:19,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 01:43:19,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 01:43:19,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 01:43:19,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 01:43:19,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 01:43:19,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 01:43:19,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 01:43:19,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 01:43:19,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 01:43:19,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 01:43:19,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 01:43:19,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 01:43:19,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 01:43:19,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 01:43:19,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 01:43:19,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 01:43:19,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 01:43:19,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 01:43:19,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 01:43:19,428 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 01:43:19,451 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 01:43:19,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 01:43:19,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 01:43:19,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 01:43:19,453 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 01:43:19,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 01:43:19,453 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 01:43:19,453 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 01:43:19,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 01:43:19,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 01:43:19,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 01:43:19,453 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 01:43:19,454 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 01:43:19,454 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 01:43:19,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 01:43:19,454 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 01:43:19,454 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 01:43:19,454 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 01:43:19,454 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 01:43:19,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 01:43:19,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 01:43:19,455 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 01:43:19,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 01:43:19,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 01:43:19,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 01:43:19,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 01:43:19,455 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 01:43:19,455 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 01:43:19,456 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 01:43:19,456 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_5549e568-0e1a-4bb7-b417-65c815f865ec/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 -> 66b1645e6497ed5e04695d784e7a77b914e4f212 [2019-11-20 01:43:19,592 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 01:43:19,605 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 01:43:19,608 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 01:43:19,609 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 01:43:19,611 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 01:43:19,612 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/bin/uautomizer/../../sv-benchmarks/c/list-simple/dll2c_insert_unequal.i [2019-11-20 01:43:19,667 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/bin/uautomizer/data/841034ebc/beb5ca35e2b149abb7bad30a6e7679a2/FLAG6b603040a [2019-11-20 01:43:20,176 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 01:43:20,177 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/sv-benchmarks/c/list-simple/dll2c_insert_unequal.i [2019-11-20 01:43:20,195 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/bin/uautomizer/data/841034ebc/beb5ca35e2b149abb7bad30a6e7679a2/FLAG6b603040a [2019-11-20 01:43:20,683 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/bin/uautomizer/data/841034ebc/beb5ca35e2b149abb7bad30a6e7679a2 [2019-11-20 01:43:20,686 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 01:43:20,687 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 01:43:20,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 01:43:20,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 01:43:20,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 01:43:20,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:43:20" (1/1) ... [2019-11-20 01:43:20,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@353039cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:20, skipping insertion in model container [2019-11-20 01:43:20,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:43:20" (1/1) ... [2019-11-20 01:43:20,703 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 01:43:20,743 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 01:43:21,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:43:21,121 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 01:43:21,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:43:21,239 INFO L192 MainTranslator]: Completed translation [2019-11-20 01:43:21,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:21 WrapperNode [2019-11-20 01:43:21,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 01:43:21,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 01:43:21,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 01:43:21,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 01:43:21,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:21" (1/1) ... [2019-11-20 01:43:21,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:21" (1/1) ... [2019-11-20 01:43:21,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:21" (1/1) ... [2019-11-20 01:43:21,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:21" (1/1) ... [2019-11-20 01:43:21,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:21" (1/1) ... [2019-11-20 01:43:21,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:21" (1/1) ... [2019-11-20 01:43:21,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:21" (1/1) ... [2019-11-20 01:43:21,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 01:43:21,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 01:43:21,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 01:43:21,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 01:43:21,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/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 01:43:21,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 01:43:21,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 01:43:21,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 01:43:21,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 01:43:21,417 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-20 01:43:21,417 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-20 01:43:21,417 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2019-11-20 01:43:21,418 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2019-11-20 01:43:21,418 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_insert [2019-11-20 01:43:21,419 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 01:43:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-20 01:43:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 01:43:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 01:43:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 01:43:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 01:43:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 01:43:21,421 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 01:43:21,421 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 01:43:21,421 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 01:43:21,421 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 01:43:21,421 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 01:43:21,421 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 01:43:21,422 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 01:43:21,422 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 01:43:21,422 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 01:43:21,423 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 01:43:21,423 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 01:43:21,423 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 01:43:21,423 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 01:43:21,423 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 01:43:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 01:43:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 01:43:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 01:43:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 01:43:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 01:43:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 01:43:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 01:43:21,425 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 01:43:21,425 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 01:43:21,425 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 01:43:21,425 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 01:43:21,425 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 01:43:21,425 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 01:43:21,425 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 01:43:21,425 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 01:43:21,426 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 01:43:21,426 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 01:43:21,426 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 01:43:21,426 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 01:43:21,426 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 01:43:21,426 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 01:43:21,426 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 01:43:21,427 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 01:43:21,427 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 01:43:21,427 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 01:43:21,427 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 01:43:21,427 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 01:43:21,427 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 01:43:21,428 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 01:43:21,428 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 01:43:21,428 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 01:43:21,428 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 01:43:21,428 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 01:43:21,428 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 01:43:21,428 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 01:43:21,428 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 01:43:21,429 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 01:43:21,429 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-20 01:43:21,429 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 01:43:21,430 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 01:43:21,430 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 01:43:21,430 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 01:43:21,430 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 01:43:21,431 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 01:43:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 01:43:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 01:43:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 01:43:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 01:43:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 01:43:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 01:43:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 01:43:21,433 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 01:43:21,433 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 01:43:21,433 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 01:43:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 01:43:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 01:43:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 01:43:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 01:43:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 01:43:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 01:43:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 01:43:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 01:43:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 01:43:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 01:43:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 01:43:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 01:43:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 01:43:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 01:43:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 01:43:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 01:43:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 01:43:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 01:43:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 01:43:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 01:43:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 01:43:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 01:43:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 01:43:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 01:43:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 01:43:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 01:43:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 01:43:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 01:43:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 01:43:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 01:43:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 01:43:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 01:43:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-20 01:43:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-20 01:43:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 01:43:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 01:43:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 01:43:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2019-11-20 01:43:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2019-11-20 01:43:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 01:43:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 01:43:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_insert [2019-11-20 01:43:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 01:43:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 01:43:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-20 01:43:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 01:43:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 01:43:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 01:43:22,008 INFO L689 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-20 01:43:22,694 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 01:43:22,694 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 01:43:22,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:43:22 BoogieIcfgContainer [2019-11-20 01:43:22,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 01:43:22,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 01:43:22,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 01:43:22,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 01:43:22,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:43:20" (1/3) ... [2019-11-20 01:43:22,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdf1cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:43:22, skipping insertion in model container [2019-11-20 01:43:22,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:21" (2/3) ... [2019-11-20 01:43:22,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdf1cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:43:22, skipping insertion in model container [2019-11-20 01:43:22,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:43:22" (3/3) ... [2019-11-20 01:43:22,707 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_insert_unequal.i [2019-11-20 01:43:22,717 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 01:43:22,726 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 81 error locations. [2019-11-20 01:43:22,736 INFO L249 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2019-11-20 01:43:22,754 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 01:43:22,754 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 01:43:22,754 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 01:43:22,754 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 01:43:22,754 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 01:43:22,754 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 01:43:22,754 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 01:43:22,755 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 01:43:22,774 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2019-11-20 01:43:22,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-20 01:43:22,782 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:43:22,783 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:43:22,783 INFO L410 AbstractCegarLoop]: === Iteration 1 === [dll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr2REQUIRES_VIOLATION, dll_circular_destroyErr3REQUIRES_VIOLATION, dll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr0REQUIRES_VIOLATION, dll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr1REQUIRES_VIOLATION, dll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_insertErr9REQUIRES_VIOLATION, dll_circular_insertErr31REQUIRES_VIOLATION, dll_circular_insertErr30REQUIRES_VIOLATION, dll_circular_insertErr29REQUIRES_VIOLATION, dll_circular_insertErr8REQUIRES_VIOLATION, dll_circular_insertErr12REQUIRES_VIOLATION, dll_circular_insertErr33REQUIRES_VIOLATION, dll_circular_insertErr32REQUIRES_VIOLATION, dll_circular_insertErr10REQUIRES_VIOLATION, dll_circular_insertErr11REQUIRES_VIOLATION, dll_circular_insertErr14REQUIRES_VIOLATION, dll_circular_insertErr15REQUIRES_VIOLATION, dll_circular_insertErr13REQUIRES_VIOLATION, dll_circular_insertErr35REQUIRES_VIOLATION, dll_circular_insertErr34REQUIRES_VIOLATION, dll_circular_insertErr17REQUIRES_VIOLATION, dll_circular_insertErr16REQUIRES_VIOLATION, dll_circular_insertErr20REQUIRES_VIOLATION, dll_circular_insertErr18REQUIRES_VIOLATION, dll_circular_insertErr19REQUIRES_VIOLATION, dll_circular_insertErr1REQUIRES_VIOLATION, dll_circular_insertErr22REQUIRES_VIOLATION, dll_circular_insertErr23REQUIRES_VIOLATION, dll_circular_insertErr21REQUIRES_VIOLATION, dll_circular_insertErr0REQUIRES_VIOLATION, dll_circular_insertErr25REQUIRES_VIOLATION, dll_circular_insertErr4REQUIRES_VIOLATION, dll_circular_insertErr2REQUIRES_VIOLATION, dll_circular_insertErr3REQUIRES_VIOLATION, dll_circular_insertErr24REQUIRES_VIOLATION, dll_circular_insertErr6REQUIRES_VIOLATION, dll_circular_insertErr7REQUIRES_VIOLATION, dll_circular_insertErr28REQUIRES_VIOLATION, dll_circular_insertErr5REQUIRES_VIOLATION, dll_circular_insertErr26REQUIRES_VIOLATION, dll_circular_insertErr27REQUIRES_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, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 01:43:22,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:22,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1463698493, now seen corresponding path program 1 times [2019-11-20 01:43:22,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:43:22,799 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1149096814] [2019-11-20 01:43:22,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/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 01:43:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:23,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 01:43:23,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:23,085 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 01:43:23,085 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:43:23,093 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:43:23,094 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:43:23,094 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 01:43:23,105 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 01:43:23,105 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:43:23,126 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 01:43:23,127 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1149096814] [2019-11-20 01:43:23,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:43:23,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 01:43:23,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945507115] [2019-11-20 01:43:23,136 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 01:43:23,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:43:23,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 01:43:23,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 01:43:23,150 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 3 states. [2019-11-20 01:43:23,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:43:23,577 INFO L93 Difference]: Finished difference Result 187 states and 201 transitions. [2019-11-20 01:43:23,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 01:43:23,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-11-20 01:43:23,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:43:23,591 INFO L225 Difference]: With dead ends: 187 [2019-11-20 01:43:23,591 INFO L226 Difference]: Without dead ends: 180 [2019-11-20 01:43:23,593 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 01:43:23,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2019-11-20 01:43:23,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2019-11-20 01:43:23,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2019-11-20 01:43:23,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 190 transitions. [2019-11-20 01:43:23,675 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 190 transitions. Word has length 12 [2019-11-20 01:43:23,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:43:23,676 INFO L462 AbstractCegarLoop]: Abstraction has 180 states and 190 transitions. [2019-11-20 01:43:23,676 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 01:43:23,676 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 190 transitions. [2019-11-20 01:43:23,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-20 01:43:23,677 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:43:23,677 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:43:23,877 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:43:23,878 INFO L410 AbstractCegarLoop]: === Iteration 2 === [dll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr2REQUIRES_VIOLATION, dll_circular_destroyErr3REQUIRES_VIOLATION, dll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr0REQUIRES_VIOLATION, dll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr1REQUIRES_VIOLATION, dll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_insertErr9REQUIRES_VIOLATION, dll_circular_insertErr31REQUIRES_VIOLATION, dll_circular_insertErr30REQUIRES_VIOLATION, dll_circular_insertErr29REQUIRES_VIOLATION, dll_circular_insertErr8REQUIRES_VIOLATION, dll_circular_insertErr12REQUIRES_VIOLATION, dll_circular_insertErr33REQUIRES_VIOLATION, dll_circular_insertErr32REQUIRES_VIOLATION, dll_circular_insertErr10REQUIRES_VIOLATION, dll_circular_insertErr11REQUIRES_VIOLATION, dll_circular_insertErr14REQUIRES_VIOLATION, dll_circular_insertErr15REQUIRES_VIOLATION, dll_circular_insertErr13REQUIRES_VIOLATION, dll_circular_insertErr35REQUIRES_VIOLATION, dll_circular_insertErr34REQUIRES_VIOLATION, dll_circular_insertErr17REQUIRES_VIOLATION, dll_circular_insertErr16REQUIRES_VIOLATION, dll_circular_insertErr20REQUIRES_VIOLATION, dll_circular_insertErr18REQUIRES_VIOLATION, dll_circular_insertErr19REQUIRES_VIOLATION, dll_circular_insertErr1REQUIRES_VIOLATION, dll_circular_insertErr22REQUIRES_VIOLATION, dll_circular_insertErr23REQUIRES_VIOLATION, dll_circular_insertErr21REQUIRES_VIOLATION, dll_circular_insertErr0REQUIRES_VIOLATION, dll_circular_insertErr25REQUIRES_VIOLATION, dll_circular_insertErr4REQUIRES_VIOLATION, dll_circular_insertErr2REQUIRES_VIOLATION, dll_circular_insertErr3REQUIRES_VIOLATION, dll_circular_insertErr24REQUIRES_VIOLATION, dll_circular_insertErr6REQUIRES_VIOLATION, dll_circular_insertErr7REQUIRES_VIOLATION, dll_circular_insertErr28REQUIRES_VIOLATION, dll_circular_insertErr5REQUIRES_VIOLATION, dll_circular_insertErr26REQUIRES_VIOLATION, dll_circular_insertErr27REQUIRES_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, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 01:43:23,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:23,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1463698492, now seen corresponding path program 1 times [2019-11-20 01:43:23,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:43:23,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2010822805] [2019-11-20 01:43:23,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/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 01:43:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:24,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 01:43:24,085 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:24,097 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 01:43:24,098 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:43:24,103 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:43:24,104 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:43:24,104 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 01:43:24,113 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 01:43:24,114 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:43:24,160 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 01:43:24,160 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2010822805] [2019-11-20 01:43:24,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:43:24,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 01:43:24,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306950635] [2019-11-20 01:43:24,162 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 01:43:24,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:43:24,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 01:43:24,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 01:43:24,163 INFO L87 Difference]: Start difference. First operand 180 states and 190 transitions. Second operand 4 states. [2019-11-20 01:43:24,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:43:24,872 INFO L93 Difference]: Finished difference Result 177 states and 187 transitions. [2019-11-20 01:43:24,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 01:43:24,875 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-20 01:43:24,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:43:24,877 INFO L225 Difference]: With dead ends: 177 [2019-11-20 01:43:24,877 INFO L226 Difference]: Without dead ends: 177 [2019-11-20 01:43:24,878 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 01:43:24,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2019-11-20 01:43:24,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2019-11-20 01:43:24,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2019-11-20 01:43:24,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 187 transitions. [2019-11-20 01:43:24,898 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 187 transitions. Word has length 12 [2019-11-20 01:43:24,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:43:24,898 INFO L462 AbstractCegarLoop]: Abstraction has 177 states and 187 transitions. [2019-11-20 01:43:24,898 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 01:43:24,898 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 187 transitions. [2019-11-20 01:43:24,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 01:43:24,899 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:43:24,899 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:43:25,099 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:43:25,100 INFO L410 AbstractCegarLoop]: === Iteration 3 === [dll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr2REQUIRES_VIOLATION, dll_circular_destroyErr3REQUIRES_VIOLATION, dll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr0REQUIRES_VIOLATION, dll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr1REQUIRES_VIOLATION, dll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_insertErr9REQUIRES_VIOLATION, dll_circular_insertErr31REQUIRES_VIOLATION, dll_circular_insertErr30REQUIRES_VIOLATION, dll_circular_insertErr29REQUIRES_VIOLATION, dll_circular_insertErr8REQUIRES_VIOLATION, dll_circular_insertErr12REQUIRES_VIOLATION, dll_circular_insertErr33REQUIRES_VIOLATION, dll_circular_insertErr32REQUIRES_VIOLATION, dll_circular_insertErr10REQUIRES_VIOLATION, dll_circular_insertErr11REQUIRES_VIOLATION, dll_circular_insertErr14REQUIRES_VIOLATION, dll_circular_insertErr15REQUIRES_VIOLATION, dll_circular_insertErr13REQUIRES_VIOLATION, dll_circular_insertErr35REQUIRES_VIOLATION, dll_circular_insertErr34REQUIRES_VIOLATION, dll_circular_insertErr17REQUIRES_VIOLATION, dll_circular_insertErr16REQUIRES_VIOLATION, dll_circular_insertErr20REQUIRES_VIOLATION, dll_circular_insertErr18REQUIRES_VIOLATION, dll_circular_insertErr19REQUIRES_VIOLATION, dll_circular_insertErr1REQUIRES_VIOLATION, dll_circular_insertErr22REQUIRES_VIOLATION, dll_circular_insertErr23REQUIRES_VIOLATION, dll_circular_insertErr21REQUIRES_VIOLATION, dll_circular_insertErr0REQUIRES_VIOLATION, dll_circular_insertErr25REQUIRES_VIOLATION, dll_circular_insertErr4REQUIRES_VIOLATION, dll_circular_insertErr2REQUIRES_VIOLATION, dll_circular_insertErr3REQUIRES_VIOLATION, dll_circular_insertErr24REQUIRES_VIOLATION, dll_circular_insertErr6REQUIRES_VIOLATION, dll_circular_insertErr7REQUIRES_VIOLATION, dll_circular_insertErr28REQUIRES_VIOLATION, dll_circular_insertErr5REQUIRES_VIOLATION, dll_circular_insertErr26REQUIRES_VIOLATION, dll_circular_insertErr27REQUIRES_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, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 01:43:25,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:25,100 INFO L82 PathProgramCache]: Analyzing trace with hash 147525888, now seen corresponding path program 1 times [2019-11-20 01:43:25,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:43:25,101 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1723527396] [2019-11-20 01:43:25,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/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 01:43:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:25,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:43:25,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:25,330 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 01:43:25,330 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:43:25,372 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 01:43:25,372 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1723527396] [2019-11-20 01:43:25,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:43:25,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-20 01:43:25,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573411089] [2019-11-20 01:43:25,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 01:43:25,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:43:25,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 01:43:25,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-20 01:43:25,374 INFO L87 Difference]: Start difference. First operand 177 states and 187 transitions. Second operand 8 states. [2019-11-20 01:43:25,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:43:25,495 INFO L93 Difference]: Finished difference Result 188 states and 200 transitions. [2019-11-20 01:43:25,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 01:43:25,495 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2019-11-20 01:43:25,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:43:25,497 INFO L225 Difference]: With dead ends: 188 [2019-11-20 01:43:25,497 INFO L226 Difference]: Without dead ends: 188 [2019-11-20 01:43:25,497 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 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 01:43:25,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2019-11-20 01:43:25,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 178. [2019-11-20 01:43:25,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2019-11-20 01:43:25,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 188 transitions. [2019-11-20 01:43:25,513 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 188 transitions. Word has length 20 [2019-11-20 01:43:25,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:43:25,514 INFO L462 AbstractCegarLoop]: Abstraction has 178 states and 188 transitions. [2019-11-20 01:43:25,514 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 01:43:25,514 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 188 transitions. [2019-11-20 01:43:25,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-20 01:43:25,515 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:43:25,516 INFO L410 BasicCegarLoop]: trace histogram [2, 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 01:43:25,719 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:43:25,720 INFO L410 AbstractCegarLoop]: === Iteration 4 === [dll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr2REQUIRES_VIOLATION, dll_circular_destroyErr3REQUIRES_VIOLATION, dll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr0REQUIRES_VIOLATION, dll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr1REQUIRES_VIOLATION, dll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_insertErr9REQUIRES_VIOLATION, dll_circular_insertErr31REQUIRES_VIOLATION, dll_circular_insertErr30REQUIRES_VIOLATION, dll_circular_insertErr29REQUIRES_VIOLATION, dll_circular_insertErr8REQUIRES_VIOLATION, dll_circular_insertErr12REQUIRES_VIOLATION, dll_circular_insertErr33REQUIRES_VIOLATION, dll_circular_insertErr32REQUIRES_VIOLATION, dll_circular_insertErr10REQUIRES_VIOLATION, dll_circular_insertErr11REQUIRES_VIOLATION, dll_circular_insertErr14REQUIRES_VIOLATION, dll_circular_insertErr15REQUIRES_VIOLATION, dll_circular_insertErr13REQUIRES_VIOLATION, dll_circular_insertErr35REQUIRES_VIOLATION, dll_circular_insertErr34REQUIRES_VIOLATION, dll_circular_insertErr17REQUIRES_VIOLATION, dll_circular_insertErr16REQUIRES_VIOLATION, dll_circular_insertErr20REQUIRES_VIOLATION, dll_circular_insertErr18REQUIRES_VIOLATION, dll_circular_insertErr19REQUIRES_VIOLATION, dll_circular_insertErr1REQUIRES_VIOLATION, dll_circular_insertErr22REQUIRES_VIOLATION, dll_circular_insertErr23REQUIRES_VIOLATION, dll_circular_insertErr21REQUIRES_VIOLATION, dll_circular_insertErr0REQUIRES_VIOLATION, dll_circular_insertErr25REQUIRES_VIOLATION, dll_circular_insertErr4REQUIRES_VIOLATION, dll_circular_insertErr2REQUIRES_VIOLATION, dll_circular_insertErr3REQUIRES_VIOLATION, dll_circular_insertErr24REQUIRES_VIOLATION, dll_circular_insertErr6REQUIRES_VIOLATION, dll_circular_insertErr7REQUIRES_VIOLATION, dll_circular_insertErr28REQUIRES_VIOLATION, dll_circular_insertErr5REQUIRES_VIOLATION, dll_circular_insertErr26REQUIRES_VIOLATION, dll_circular_insertErr27REQUIRES_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, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 01:43:25,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:25,720 INFO L82 PathProgramCache]: Analyzing trace with hash -507601777, now seen corresponding path program 1 times [2019-11-20 01:43:25,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:43:25,727 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [540338413] [2019-11-20 01:43:25,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/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 01:43:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:25,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 01:43:25,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:26,008 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 01:43:26,008 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:43:26,017 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:43:26,017 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:43:26,018 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 01:43:26,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 01:43:26,084 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:43:26,380 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 01:43:26,380 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [540338413] [2019-11-20 01:43:26,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:43:26,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-20 01:43:26,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039716095] [2019-11-20 01:43:26,381 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 01:43:26,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:43:26,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 01:43:26,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-20 01:43:26,382 INFO L87 Difference]: Start difference. First operand 178 states and 188 transitions. Second operand 10 states. [2019-11-20 01:43:28,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:43:28,157 INFO L93 Difference]: Finished difference Result 178 states and 189 transitions. [2019-11-20 01:43:28,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 01:43:28,160 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2019-11-20 01:43:28,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:43:28,162 INFO L225 Difference]: With dead ends: 178 [2019-11-20 01:43:28,162 INFO L226 Difference]: Without dead ends: 178 [2019-11-20 01:43:28,163 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-20 01:43:28,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-11-20 01:43:28,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2019-11-20 01:43:28,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2019-11-20 01:43:28,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 187 transitions. [2019-11-20 01:43:28,173 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 187 transitions. Word has length 30 [2019-11-20 01:43:28,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:43:28,175 INFO L462 AbstractCegarLoop]: Abstraction has 177 states and 187 transitions. [2019-11-20 01:43:28,175 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 01:43:28,175 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 187 transitions. [2019-11-20 01:43:28,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-20 01:43:28,176 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:43:28,177 INFO L410 BasicCegarLoop]: trace histogram [2, 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 01:43:28,379 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:43:28,379 INFO L410 AbstractCegarLoop]: === Iteration 5 === [dll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr2REQUIRES_VIOLATION, dll_circular_destroyErr3REQUIRES_VIOLATION, dll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr0REQUIRES_VIOLATION, dll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr1REQUIRES_VIOLATION, dll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_insertErr9REQUIRES_VIOLATION, dll_circular_insertErr31REQUIRES_VIOLATION, dll_circular_insertErr30REQUIRES_VIOLATION, dll_circular_insertErr29REQUIRES_VIOLATION, dll_circular_insertErr8REQUIRES_VIOLATION, dll_circular_insertErr12REQUIRES_VIOLATION, dll_circular_insertErr33REQUIRES_VIOLATION, dll_circular_insertErr32REQUIRES_VIOLATION, dll_circular_insertErr10REQUIRES_VIOLATION, dll_circular_insertErr11REQUIRES_VIOLATION, dll_circular_insertErr14REQUIRES_VIOLATION, dll_circular_insertErr15REQUIRES_VIOLATION, dll_circular_insertErr13REQUIRES_VIOLATION, dll_circular_insertErr35REQUIRES_VIOLATION, dll_circular_insertErr34REQUIRES_VIOLATION, dll_circular_insertErr17REQUIRES_VIOLATION, dll_circular_insertErr16REQUIRES_VIOLATION, dll_circular_insertErr20REQUIRES_VIOLATION, dll_circular_insertErr18REQUIRES_VIOLATION, dll_circular_insertErr19REQUIRES_VIOLATION, dll_circular_insertErr1REQUIRES_VIOLATION, dll_circular_insertErr22REQUIRES_VIOLATION, dll_circular_insertErr23REQUIRES_VIOLATION, dll_circular_insertErr21REQUIRES_VIOLATION, dll_circular_insertErr0REQUIRES_VIOLATION, dll_circular_insertErr25REQUIRES_VIOLATION, dll_circular_insertErr4REQUIRES_VIOLATION, dll_circular_insertErr2REQUIRES_VIOLATION, dll_circular_insertErr3REQUIRES_VIOLATION, dll_circular_insertErr24REQUIRES_VIOLATION, dll_circular_insertErr6REQUIRES_VIOLATION, dll_circular_insertErr7REQUIRES_VIOLATION, dll_circular_insertErr28REQUIRES_VIOLATION, dll_circular_insertErr5REQUIRES_VIOLATION, dll_circular_insertErr26REQUIRES_VIOLATION, dll_circular_insertErr27REQUIRES_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, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 01:43:28,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:28,380 INFO L82 PathProgramCache]: Analyzing trace with hash -507601778, now seen corresponding path program 1 times [2019-11-20 01:43:28,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:43:28,381 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [370280911] [2019-11-20 01:43:28,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/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 01:43:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:28,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 01:43:28,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:28,625 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 01:43:28,626 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:43:28,628 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:43:28,628 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:43:28,628 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 01:43:28,658 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 01:43:28,658 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:43:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 01:43:28,726 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [370280911] [2019-11-20 01:43:28,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:43:28,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 01:43:28,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343243652] [2019-11-20 01:43:28,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 01:43:28,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:43:28,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 01:43:28,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-20 01:43:28,728 INFO L87 Difference]: Start difference. First operand 177 states and 187 transitions. Second operand 6 states. [2019-11-20 01:43:29,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:43:29,341 INFO L93 Difference]: Finished difference Result 177 states and 188 transitions. [2019-11-20 01:43:29,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 01:43:29,344 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-11-20 01:43:29,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:43:29,346 INFO L225 Difference]: With dead ends: 177 [2019-11-20 01:43:29,346 INFO L226 Difference]: Without dead ends: 177 [2019-11-20 01:43:29,346 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 1 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 01:43:29,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2019-11-20 01:43:29,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2019-11-20 01:43:29,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2019-11-20 01:43:29,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 186 transitions. [2019-11-20 01:43:29,351 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 186 transitions. Word has length 30 [2019-11-20 01:43:29,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:43:29,352 INFO L462 AbstractCegarLoop]: Abstraction has 176 states and 186 transitions. [2019-11-20 01:43:29,352 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 01:43:29,352 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 186 transitions. [2019-11-20 01:43:29,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 01:43:29,352 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:43:29,353 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:43:29,553 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:43:29,553 INFO L410 AbstractCegarLoop]: === Iteration 6 === [dll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr2REQUIRES_VIOLATION, dll_circular_destroyErr3REQUIRES_VIOLATION, dll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr0REQUIRES_VIOLATION, dll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr1REQUIRES_VIOLATION, dll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_insertErr9REQUIRES_VIOLATION, dll_circular_insertErr31REQUIRES_VIOLATION, dll_circular_insertErr30REQUIRES_VIOLATION, dll_circular_insertErr29REQUIRES_VIOLATION, dll_circular_insertErr8REQUIRES_VIOLATION, dll_circular_insertErr12REQUIRES_VIOLATION, dll_circular_insertErr33REQUIRES_VIOLATION, dll_circular_insertErr32REQUIRES_VIOLATION, dll_circular_insertErr10REQUIRES_VIOLATION, dll_circular_insertErr11REQUIRES_VIOLATION, dll_circular_insertErr14REQUIRES_VIOLATION, dll_circular_insertErr15REQUIRES_VIOLATION, dll_circular_insertErr13REQUIRES_VIOLATION, dll_circular_insertErr35REQUIRES_VIOLATION, dll_circular_insertErr34REQUIRES_VIOLATION, dll_circular_insertErr17REQUIRES_VIOLATION, dll_circular_insertErr16REQUIRES_VIOLATION, dll_circular_insertErr20REQUIRES_VIOLATION, dll_circular_insertErr18REQUIRES_VIOLATION, dll_circular_insertErr19REQUIRES_VIOLATION, dll_circular_insertErr1REQUIRES_VIOLATION, dll_circular_insertErr22REQUIRES_VIOLATION, dll_circular_insertErr23REQUIRES_VIOLATION, dll_circular_insertErr21REQUIRES_VIOLATION, dll_circular_insertErr0REQUIRES_VIOLATION, dll_circular_insertErr25REQUIRES_VIOLATION, dll_circular_insertErr4REQUIRES_VIOLATION, dll_circular_insertErr2REQUIRES_VIOLATION, dll_circular_insertErr3REQUIRES_VIOLATION, dll_circular_insertErr24REQUIRES_VIOLATION, dll_circular_insertErr6REQUIRES_VIOLATION, dll_circular_insertErr7REQUIRES_VIOLATION, dll_circular_insertErr28REQUIRES_VIOLATION, dll_circular_insertErr5REQUIRES_VIOLATION, dll_circular_insertErr26REQUIRES_VIOLATION, dll_circular_insertErr27REQUIRES_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, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 01:43:29,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:29,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1820962735, now seen corresponding path program 1 times [2019-11-20 01:43:29,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:43:29,554 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [779467764] [2019-11-20 01:43:29,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/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 01:43:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:29,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 01:43:29,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:29,782 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 01:43:29,782 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:43:29,784 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:43:29,784 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:43:29,784 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 01:43:29,884 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:43:29,884 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 01:43:29,885 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:43:29,902 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-20 01:43:29,902 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 01:43:29,903 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2019-11-20 01:43:29,913 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 01:43:29,913 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:43:30,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:43:30,086 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [779467764] [2019-11-20 01:43:30,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:43:30,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-11-20 01:43:30,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434269557] [2019-11-20 01:43:30,087 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 01:43:30,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:43:30,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 01:43:30,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-20 01:43:30,087 INFO L87 Difference]: Start difference. First operand 176 states and 186 transitions. Second operand 9 states. [2019-11-20 01:43:49,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:43:49,943 INFO L93 Difference]: Finished difference Result 203 states and 216 transitions. [2019-11-20 01:43:49,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 01:43:49,944 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2019-11-20 01:43:49,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:43:49,946 INFO L225 Difference]: With dead ends: 203 [2019-11-20 01:43:49,946 INFO L226 Difference]: Without dead ends: 203 [2019-11-20 01:43:49,946 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-11-20 01:43:49,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2019-11-20 01:43:49,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 181. [2019-11-20 01:43:49,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2019-11-20 01:43:49,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 194 transitions. [2019-11-20 01:43:49,956 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 194 transitions. Word has length 32 [2019-11-20 01:43:49,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:43:49,957 INFO L462 AbstractCegarLoop]: Abstraction has 181 states and 194 transitions. [2019-11-20 01:43:49,957 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 01:43:49,957 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 194 transitions. [2019-11-20 01:43:49,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 01:43:49,958 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:43:49,958 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:43:50,161 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:43:50,161 INFO L410 AbstractCegarLoop]: === Iteration 7 === [dll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr2REQUIRES_VIOLATION, dll_circular_destroyErr3REQUIRES_VIOLATION, dll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr0REQUIRES_VIOLATION, dll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr1REQUIRES_VIOLATION, dll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_insertErr9REQUIRES_VIOLATION, dll_circular_insertErr31REQUIRES_VIOLATION, dll_circular_insertErr30REQUIRES_VIOLATION, dll_circular_insertErr29REQUIRES_VIOLATION, dll_circular_insertErr8REQUIRES_VIOLATION, dll_circular_insertErr12REQUIRES_VIOLATION, dll_circular_insertErr33REQUIRES_VIOLATION, dll_circular_insertErr32REQUIRES_VIOLATION, dll_circular_insertErr10REQUIRES_VIOLATION, dll_circular_insertErr11REQUIRES_VIOLATION, dll_circular_insertErr14REQUIRES_VIOLATION, dll_circular_insertErr15REQUIRES_VIOLATION, dll_circular_insertErr13REQUIRES_VIOLATION, dll_circular_insertErr35REQUIRES_VIOLATION, dll_circular_insertErr34REQUIRES_VIOLATION, dll_circular_insertErr17REQUIRES_VIOLATION, dll_circular_insertErr16REQUIRES_VIOLATION, dll_circular_insertErr20REQUIRES_VIOLATION, dll_circular_insertErr18REQUIRES_VIOLATION, dll_circular_insertErr19REQUIRES_VIOLATION, dll_circular_insertErr1REQUIRES_VIOLATION, dll_circular_insertErr22REQUIRES_VIOLATION, dll_circular_insertErr23REQUIRES_VIOLATION, dll_circular_insertErr21REQUIRES_VIOLATION, dll_circular_insertErr0REQUIRES_VIOLATION, dll_circular_insertErr25REQUIRES_VIOLATION, dll_circular_insertErr4REQUIRES_VIOLATION, dll_circular_insertErr2REQUIRES_VIOLATION, dll_circular_insertErr3REQUIRES_VIOLATION, dll_circular_insertErr24REQUIRES_VIOLATION, dll_circular_insertErr6REQUIRES_VIOLATION, dll_circular_insertErr7REQUIRES_VIOLATION, dll_circular_insertErr28REQUIRES_VIOLATION, dll_circular_insertErr5REQUIRES_VIOLATION, dll_circular_insertErr26REQUIRES_VIOLATION, dll_circular_insertErr27REQUIRES_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, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 01:43:50,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:50,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1820962736, now seen corresponding path program 1 times [2019-11-20 01:43:50,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:43:50,162 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [7710881] [2019-11-20 01:43:50,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/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 01:43:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:50,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-20 01:43:50,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:50,456 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 01:43:50,457 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:43:50,465 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:43:50,468 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 01:43:50,468 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 01:43:50,474 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:43:50,474 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:43:50,474 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-20 01:43:50,578 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:43:50,578 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 01:43:50,579 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:43:50,587 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:43:50,591 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 14 treesize of output 16 [2019-11-20 01:43:50,592 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 01:43:50,601 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:43:50,602 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 01:43:50,602 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:20 [2019-11-20 01:43:50,636 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 01:43:50,636 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:43:50,735 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:43:50,916 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:43:50,916 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:43:50,917 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:43:50,918 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:43:50,919 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:43:50,921 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:43:50,922 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:43:50,923 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:43:56,584 WARN L191 SmtUtils]: Spent 3.30 s on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2019-11-20 01:43:56,599 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:43:57,136 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2019-11-20 01:43:57,851 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 01:43:57,852 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [7710881] [2019-11-20 01:43:57,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:43:57,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2019-11-20 01:43:57,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344707396] [2019-11-20 01:43:57,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-20 01:43:57,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:43:57,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 01:43:57,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=201, Unknown=1, NotChecked=0, Total=240 [2019-11-20 01:43:57,854 INFO L87 Difference]: Start difference. First operand 181 states and 194 transitions. Second operand 16 states. [2019-11-20 01:44:03,171 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_node_create_#t~malloc2.base_31| (_ BitVec 32)) (v_dll_circular_create_~head~0.offset_BEFORE_CALL_2 (_ BitVec 32)) (v_dll_circular_create_~head~0.base_BEFORE_CALL_4 (_ BitVec 32))) (let ((.cse1 (bvadd v_dll_circular_create_~head~0.offset_BEFORE_CALL_2 (_ bv4 32))) (.cse0 (bvadd v_dll_circular_create_~head~0.offset_BEFORE_CALL_2 (_ bv8 32)))) (or (exists ((v_prenex_2 (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| v_prenex_2)) (not (bvsle (bvadd v_dll_circular_create_~head~0.offset_BEFORE_CALL_2 (_ bv8 32)) (select (store |c_old(#length)| v_prenex_2 (_ bv12 32)) v_dll_circular_create_~head~0.base_BEFORE_CALL_4))))) (bvsle .cse0 (select (store |c_#length| |v_node_create_#t~malloc2.base_31| (_ bv12 32)) v_dll_circular_create_~head~0.base_BEFORE_CALL_4)) (not (bvsle (_ bv0 32) .cse1)) (not (bvsle .cse1 .cse0)) (not (= (select |c_#valid| |v_node_create_#t~malloc2.base_31|) (_ bv0 1)))))) (= (_ bv1 1) (select |c_#valid| c_node_create_~temp~0.base)) (= (_ bv0 32) c_node_create_~temp~0.offset) (exists ((|node_create_#t~malloc2.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |node_create_#t~malloc2.base|) (_ bv0 1)) (= |c_#length| (store |c_old(#length)| |node_create_#t~malloc2.base| (_ bv12 32))))) (= (bvadd (select |c_#length| c_node_create_~temp~0.base) (_ bv4294967284 32)) (_ bv0 32))) is different from false [2019-11-20 01:44:28,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:44:28,204 INFO L93 Difference]: Finished difference Result 203 states and 216 transitions. [2019-11-20 01:44:28,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 01:44:28,205 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 32 [2019-11-20 01:44:28,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:44:28,208 INFO L225 Difference]: With dead ends: 203 [2019-11-20 01:44:28,208 INFO L226 Difference]: Without dead ends: 203 [2019-11-20 01:44:28,208 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=82, Invalid=382, Unknown=2, NotChecked=40, Total=506 [2019-11-20 01:44:28,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2019-11-20 01:44:28,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 181. [2019-11-20 01:44:28,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2019-11-20 01:44:28,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 193 transitions. [2019-11-20 01:44:28,216 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 193 transitions. Word has length 32 [2019-11-20 01:44:28,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:44:28,216 INFO L462 AbstractCegarLoop]: Abstraction has 181 states and 193 transitions. [2019-11-20 01:44:28,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-20 01:44:28,217 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 193 transitions. [2019-11-20 01:44:28,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 01:44:28,217 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:44:28,218 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:44:28,421 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:44:28,421 INFO L410 AbstractCegarLoop]: === Iteration 8 === [dll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr2REQUIRES_VIOLATION, dll_circular_destroyErr3REQUIRES_VIOLATION, dll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr0REQUIRES_VIOLATION, dll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr1REQUIRES_VIOLATION, dll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_insertErr9REQUIRES_VIOLATION, dll_circular_insertErr31REQUIRES_VIOLATION, dll_circular_insertErr30REQUIRES_VIOLATION, dll_circular_insertErr29REQUIRES_VIOLATION, dll_circular_insertErr8REQUIRES_VIOLATION, dll_circular_insertErr12REQUIRES_VIOLATION, dll_circular_insertErr33REQUIRES_VIOLATION, dll_circular_insertErr32REQUIRES_VIOLATION, dll_circular_insertErr10REQUIRES_VIOLATION, dll_circular_insertErr11REQUIRES_VIOLATION, dll_circular_insertErr14REQUIRES_VIOLATION, dll_circular_insertErr15REQUIRES_VIOLATION, dll_circular_insertErr13REQUIRES_VIOLATION, dll_circular_insertErr35REQUIRES_VIOLATION, dll_circular_insertErr34REQUIRES_VIOLATION, dll_circular_insertErr17REQUIRES_VIOLATION, dll_circular_insertErr16REQUIRES_VIOLATION, dll_circular_insertErr20REQUIRES_VIOLATION, dll_circular_insertErr18REQUIRES_VIOLATION, dll_circular_insertErr19REQUIRES_VIOLATION, dll_circular_insertErr1REQUIRES_VIOLATION, dll_circular_insertErr22REQUIRES_VIOLATION, dll_circular_insertErr23REQUIRES_VIOLATION, dll_circular_insertErr21REQUIRES_VIOLATION, dll_circular_insertErr0REQUIRES_VIOLATION, dll_circular_insertErr25REQUIRES_VIOLATION, dll_circular_insertErr4REQUIRES_VIOLATION, dll_circular_insertErr2REQUIRES_VIOLATION, dll_circular_insertErr3REQUIRES_VIOLATION, dll_circular_insertErr24REQUIRES_VIOLATION, dll_circular_insertErr6REQUIRES_VIOLATION, dll_circular_insertErr7REQUIRES_VIOLATION, dll_circular_insertErr28REQUIRES_VIOLATION, dll_circular_insertErr5REQUIRES_VIOLATION, dll_circular_insertErr26REQUIRES_VIOLATION, dll_circular_insertErr27REQUIRES_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, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 01:44:28,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:44:28,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1893652934, now seen corresponding path program 1 times [2019-11-20 01:44:28,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:44:28,422 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [895299635] [2019-11-20 01:44:28,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/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 01:44:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:44:28,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 01:44:28,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:44:28,613 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 01:44:28,613 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:44:28,663 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 01:44:28,663 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [895299635] [2019-11-20 01:44:28,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:44:28,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-20 01:44:28,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069666625] [2019-11-20 01:44:28,663 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 01:44:28,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:44:28,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 01:44:28,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-20 01:44:28,664 INFO L87 Difference]: Start difference. First operand 181 states and 193 transitions. Second operand 6 states. [2019-11-20 01:44:28,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:44:28,814 INFO L93 Difference]: Finished difference Result 182 states and 193 transitions. [2019-11-20 01:44:28,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 01:44:28,829 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2019-11-20 01:44:28,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:44:28,830 INFO L225 Difference]: With dead ends: 182 [2019-11-20 01:44:28,830 INFO L226 Difference]: Without dead ends: 182 [2019-11-20 01:44:28,830 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 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 01:44:28,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2019-11-20 01:44:28,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 181. [2019-11-20 01:44:28,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2019-11-20 01:44:28,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 192 transitions. [2019-11-20 01:44:28,837 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 192 transitions. Word has length 34 [2019-11-20 01:44:28,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:44:28,837 INFO L462 AbstractCegarLoop]: Abstraction has 181 states and 192 transitions. [2019-11-20 01:44:28,837 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 01:44:28,838 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 192 transitions. [2019-11-20 01:44:28,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-20 01:44:28,838 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:44:28,839 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:44:29,039 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:44:29,040 INFO L410 AbstractCegarLoop]: === Iteration 9 === [dll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr2REQUIRES_VIOLATION, dll_circular_destroyErr3REQUIRES_VIOLATION, dll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr0REQUIRES_VIOLATION, dll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr1REQUIRES_VIOLATION, dll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_insertErr9REQUIRES_VIOLATION, dll_circular_insertErr31REQUIRES_VIOLATION, dll_circular_insertErr30REQUIRES_VIOLATION, dll_circular_insertErr29REQUIRES_VIOLATION, dll_circular_insertErr8REQUIRES_VIOLATION, dll_circular_insertErr12REQUIRES_VIOLATION, dll_circular_insertErr33REQUIRES_VIOLATION, dll_circular_insertErr32REQUIRES_VIOLATION, dll_circular_insertErr10REQUIRES_VIOLATION, dll_circular_insertErr11REQUIRES_VIOLATION, dll_circular_insertErr14REQUIRES_VIOLATION, dll_circular_insertErr15REQUIRES_VIOLATION, dll_circular_insertErr13REQUIRES_VIOLATION, dll_circular_insertErr35REQUIRES_VIOLATION, dll_circular_insertErr34REQUIRES_VIOLATION, dll_circular_insertErr17REQUIRES_VIOLATION, dll_circular_insertErr16REQUIRES_VIOLATION, dll_circular_insertErr20REQUIRES_VIOLATION, dll_circular_insertErr18REQUIRES_VIOLATION, dll_circular_insertErr19REQUIRES_VIOLATION, dll_circular_insertErr1REQUIRES_VIOLATION, dll_circular_insertErr22REQUIRES_VIOLATION, dll_circular_insertErr23REQUIRES_VIOLATION, dll_circular_insertErr21REQUIRES_VIOLATION, dll_circular_insertErr0REQUIRES_VIOLATION, dll_circular_insertErr25REQUIRES_VIOLATION, dll_circular_insertErr4REQUIRES_VIOLATION, dll_circular_insertErr2REQUIRES_VIOLATION, dll_circular_insertErr3REQUIRES_VIOLATION, dll_circular_insertErr24REQUIRES_VIOLATION, dll_circular_insertErr6REQUIRES_VIOLATION, dll_circular_insertErr7REQUIRES_VIOLATION, dll_circular_insertErr28REQUIRES_VIOLATION, dll_circular_insertErr5REQUIRES_VIOLATION, dll_circular_insertErr26REQUIRES_VIOLATION, dll_circular_insertErr27REQUIRES_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, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 01:44:29,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:44:29,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1431081885, now seen corresponding path program 1 times [2019-11-20 01:44:29,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:44:29,041 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1922771471] [2019-11-20 01:44:29,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/bin/uautomizer/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:44:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:44:29,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 01:44:29,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:44:29,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 01:44:29,378 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:44:29,411 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:44:29,432 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2019-11-20 01:44:29,432 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 01:44:29,445 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2019-11-20 01:44:29,446 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 01:44:29,457 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:44:29,457 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 16 treesize of output 20 [2019-11-20 01:44:29,457 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:44:29,458 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:44:29,458 INFO L496 ElimStorePlain]: Start of recursive call 4: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 01:44:29,508 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:44:29,509 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:44:29,509 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 3 xjuncts. [2019-11-20 01:44:29,510 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:43, output treesize:43 [2019-11-20 01:44:29,510 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:44:29,672 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:44:29,783 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:44:29,906 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:44:30,018 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:44:30,142 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:44:30,547 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 01:44:30,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1922771471] [2019-11-20 01:44:30,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:44:30,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2019-11-20 01:44:30,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797923995] [2019-11-20 01:44:30,548 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-20 01:44:30,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:44:30,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 01:44:30,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-11-20 01:44:30,549 INFO L87 Difference]: Start difference. First operand 181 states and 192 transitions. Second operand 12 states. [2019-11-20 01:44:31,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:44:31,349 INFO L93 Difference]: Finished difference Result 192 states and 205 transitions. [2019-11-20 01:44:31,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 01:44:31,350 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2019-11-20 01:44:31,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:44:31,351 INFO L225 Difference]: With dead ends: 192 [2019-11-20 01:44:31,351 INFO L226 Difference]: Without dead ends: 192 [2019-11-20 01:44:31,352 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-11-20 01:44:31,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2019-11-20 01:44:31,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 184. [2019-11-20 01:44:31,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2019-11-20 01:44:31,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 197 transitions. [2019-11-20 01:44:31,358 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 197 transitions. Word has length 35 [2019-11-20 01:44:31,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:44:31,358 INFO L462 AbstractCegarLoop]: Abstraction has 184 states and 197 transitions. [2019-11-20 01:44:31,358 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-20 01:44:31,358 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 197 transitions. [2019-11-20 01:44:31,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-20 01:44:31,359 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:44:31,359 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:44:31,560 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:44:31,560 INFO L410 AbstractCegarLoop]: === Iteration 10 === [dll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr2REQUIRES_VIOLATION, dll_circular_destroyErr3REQUIRES_VIOLATION, dll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr0REQUIRES_VIOLATION, dll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr1REQUIRES_VIOLATION, dll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_insertErr9REQUIRES_VIOLATION, dll_circular_insertErr31REQUIRES_VIOLATION, dll_circular_insertErr30REQUIRES_VIOLATION, dll_circular_insertErr29REQUIRES_VIOLATION, dll_circular_insertErr8REQUIRES_VIOLATION, dll_circular_insertErr12REQUIRES_VIOLATION, dll_circular_insertErr33REQUIRES_VIOLATION, dll_circular_insertErr32REQUIRES_VIOLATION, dll_circular_insertErr10REQUIRES_VIOLATION, dll_circular_insertErr11REQUIRES_VIOLATION, dll_circular_insertErr14REQUIRES_VIOLATION, dll_circular_insertErr15REQUIRES_VIOLATION, dll_circular_insertErr13REQUIRES_VIOLATION, dll_circular_insertErr35REQUIRES_VIOLATION, dll_circular_insertErr34REQUIRES_VIOLATION, dll_circular_insertErr17REQUIRES_VIOLATION, dll_circular_insertErr16REQUIRES_VIOLATION, dll_circular_insertErr20REQUIRES_VIOLATION, dll_circular_insertErr18REQUIRES_VIOLATION, dll_circular_insertErr19REQUIRES_VIOLATION, dll_circular_insertErr1REQUIRES_VIOLATION, dll_circular_insertErr22REQUIRES_VIOLATION, dll_circular_insertErr23REQUIRES_VIOLATION, dll_circular_insertErr21REQUIRES_VIOLATION, dll_circular_insertErr0REQUIRES_VIOLATION, dll_circular_insertErr25REQUIRES_VIOLATION, dll_circular_insertErr4REQUIRES_VIOLATION, dll_circular_insertErr2REQUIRES_VIOLATION, dll_circular_insertErr3REQUIRES_VIOLATION, dll_circular_insertErr24REQUIRES_VIOLATION, dll_circular_insertErr6REQUIRES_VIOLATION, dll_circular_insertErr7REQUIRES_VIOLATION, dll_circular_insertErr28REQUIRES_VIOLATION, dll_circular_insertErr5REQUIRES_VIOLATION, dll_circular_insertErr26REQUIRES_VIOLATION, dll_circular_insertErr27REQUIRES_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, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 01:44:31,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:44:31,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1431081886, now seen corresponding path program 1 times [2019-11-20 01:44:31,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:44:31,561 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [760450965] [2019-11-20 01:44:31,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/bin/uautomizer/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:44:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:44:31,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 01:44:31,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:44:31,782 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-11-20 01:44:31,782 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:44:31,784 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:44:31,784 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:44:31,784 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:5, output treesize:1 [2019-11-20 01:44:31,793 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-20 01:44:31,793 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:44:31,801 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:44:31,801 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 12 treesize of output 16 [2019-11-20 01:44:31,801 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:44:31,802 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:44:31,803 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:44:31,803 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:44:31,804 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:3 [2019-11-20 01:44:31,839 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-20 01:44:31,839 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [760450965] [2019-11-20 01:44:31,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:44:31,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-20 01:44:31,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830948407] [2019-11-20 01:44:31,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 01:44:31,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:44:31,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 01:44:31,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 01:44:31,841 INFO L87 Difference]: Start difference. First operand 184 states and 197 transitions. Second operand 4 states. [2019-11-20 01:44:32,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:44:32,167 INFO L93 Difference]: Finished difference Result 185 states and 198 transitions. [2019-11-20 01:44:32,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 01:44:32,168 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2019-11-20 01:44:32,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:44:32,170 INFO L225 Difference]: With dead ends: 185 [2019-11-20 01:44:32,170 INFO L226 Difference]: Without dead ends: 185 [2019-11-20 01:44:32,170 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 01:44:32,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2019-11-20 01:44:32,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2019-11-20 01:44:32,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2019-11-20 01:44:32,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 196 transitions. [2019-11-20 01:44:32,176 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 196 transitions. Word has length 35 [2019-11-20 01:44:32,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:44:32,176 INFO L462 AbstractCegarLoop]: Abstraction has 184 states and 196 transitions. [2019-11-20 01:44:32,176 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 01:44:32,176 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 196 transitions. [2019-11-20 01:44:32,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 01:44:32,177 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:44:32,177 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:44:32,380 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:44:32,381 INFO L410 AbstractCegarLoop]: === Iteration 11 === [dll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr2REQUIRES_VIOLATION, dll_circular_destroyErr3REQUIRES_VIOLATION, dll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr0REQUIRES_VIOLATION, dll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr1REQUIRES_VIOLATION, dll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_insertErr9REQUIRES_VIOLATION, dll_circular_insertErr31REQUIRES_VIOLATION, dll_circular_insertErr30REQUIRES_VIOLATION, dll_circular_insertErr29REQUIRES_VIOLATION, dll_circular_insertErr8REQUIRES_VIOLATION, dll_circular_insertErr12REQUIRES_VIOLATION, dll_circular_insertErr33REQUIRES_VIOLATION, dll_circular_insertErr32REQUIRES_VIOLATION, dll_circular_insertErr10REQUIRES_VIOLATION, dll_circular_insertErr11REQUIRES_VIOLATION, dll_circular_insertErr14REQUIRES_VIOLATION, dll_circular_insertErr15REQUIRES_VIOLATION, dll_circular_insertErr13REQUIRES_VIOLATION, dll_circular_insertErr35REQUIRES_VIOLATION, dll_circular_insertErr34REQUIRES_VIOLATION, dll_circular_insertErr17REQUIRES_VIOLATION, dll_circular_insertErr16REQUIRES_VIOLATION, dll_circular_insertErr20REQUIRES_VIOLATION, dll_circular_insertErr18REQUIRES_VIOLATION, dll_circular_insertErr19REQUIRES_VIOLATION, dll_circular_insertErr1REQUIRES_VIOLATION, dll_circular_insertErr22REQUIRES_VIOLATION, dll_circular_insertErr23REQUIRES_VIOLATION, dll_circular_insertErr21REQUIRES_VIOLATION, dll_circular_insertErr0REQUIRES_VIOLATION, dll_circular_insertErr25REQUIRES_VIOLATION, dll_circular_insertErr4REQUIRES_VIOLATION, dll_circular_insertErr2REQUIRES_VIOLATION, dll_circular_insertErr3REQUIRES_VIOLATION, dll_circular_insertErr24REQUIRES_VIOLATION, dll_circular_insertErr6REQUIRES_VIOLATION, dll_circular_insertErr7REQUIRES_VIOLATION, dll_circular_insertErr28REQUIRES_VIOLATION, dll_circular_insertErr5REQUIRES_VIOLATION, dll_circular_insertErr26REQUIRES_VIOLATION, dll_circular_insertErr27REQUIRES_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, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 01:44:32,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:44:32,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1413865503, now seen corresponding path program 1 times [2019-11-20 01:44:32,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:44:32,381 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [334096041] [2019-11-20 01:44:32,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/bin/uautomizer/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:44:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:44:32,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 01:44:32,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:44:32,631 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 01:44:32,632 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:44:32,633 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:44:32,633 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:44:32,633 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 01:44:32,660 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 01:44:32,660 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:44:32,708 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 01:44:32,709 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [334096041] [2019-11-20 01:44:32,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:44:32,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2019-11-20 01:44:32,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863379472] [2019-11-20 01:44:32,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 01:44:32,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:44:32,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 01:44:32,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 01:44:32,710 INFO L87 Difference]: Start difference. First operand 184 states and 196 transitions. Second operand 7 states. [2019-11-20 01:44:33,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:44:33,517 INFO L93 Difference]: Finished difference Result 184 states and 196 transitions. [2019-11-20 01:44:33,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 01:44:33,517 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2019-11-20 01:44:33,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:44:33,519 INFO L225 Difference]: With dead ends: 184 [2019-11-20 01:44:33,519 INFO L226 Difference]: Without dead ends: 184 [2019-11-20 01:44:33,519 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-20 01:44:33,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2019-11-20 01:44:33,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2019-11-20 01:44:33,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2019-11-20 01:44:33,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 195 transitions. [2019-11-20 01:44:33,524 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 195 transitions. Word has length 36 [2019-11-20 01:44:33,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:44:33,525 INFO L462 AbstractCegarLoop]: Abstraction has 183 states and 195 transitions. [2019-11-20 01:44:33,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 01:44:33,525 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 195 transitions. [2019-11-20 01:44:33,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 01:44:33,528 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:44:33,529 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:44:33,732 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:44:33,733 INFO L410 AbstractCegarLoop]: === Iteration 12 === [dll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr2REQUIRES_VIOLATION, dll_circular_destroyErr3REQUIRES_VIOLATION, dll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr0REQUIRES_VIOLATION, dll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr1REQUIRES_VIOLATION, dll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_insertErr9REQUIRES_VIOLATION, dll_circular_insertErr31REQUIRES_VIOLATION, dll_circular_insertErr30REQUIRES_VIOLATION, dll_circular_insertErr29REQUIRES_VIOLATION, dll_circular_insertErr8REQUIRES_VIOLATION, dll_circular_insertErr12REQUIRES_VIOLATION, dll_circular_insertErr33REQUIRES_VIOLATION, dll_circular_insertErr32REQUIRES_VIOLATION, dll_circular_insertErr10REQUIRES_VIOLATION, dll_circular_insertErr11REQUIRES_VIOLATION, dll_circular_insertErr14REQUIRES_VIOLATION, dll_circular_insertErr15REQUIRES_VIOLATION, dll_circular_insertErr13REQUIRES_VIOLATION, dll_circular_insertErr35REQUIRES_VIOLATION, dll_circular_insertErr34REQUIRES_VIOLATION, dll_circular_insertErr17REQUIRES_VIOLATION, dll_circular_insertErr16REQUIRES_VIOLATION, dll_circular_insertErr20REQUIRES_VIOLATION, dll_circular_insertErr18REQUIRES_VIOLATION, dll_circular_insertErr19REQUIRES_VIOLATION, dll_circular_insertErr1REQUIRES_VIOLATION, dll_circular_insertErr22REQUIRES_VIOLATION, dll_circular_insertErr23REQUIRES_VIOLATION, dll_circular_insertErr21REQUIRES_VIOLATION, dll_circular_insertErr0REQUIRES_VIOLATION, dll_circular_insertErr25REQUIRES_VIOLATION, dll_circular_insertErr4REQUIRES_VIOLATION, dll_circular_insertErr2REQUIRES_VIOLATION, dll_circular_insertErr3REQUIRES_VIOLATION, dll_circular_insertErr24REQUIRES_VIOLATION, dll_circular_insertErr6REQUIRES_VIOLATION, dll_circular_insertErr7REQUIRES_VIOLATION, dll_circular_insertErr28REQUIRES_VIOLATION, dll_circular_insertErr5REQUIRES_VIOLATION, dll_circular_insertErr26REQUIRES_VIOLATION, dll_circular_insertErr27REQUIRES_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, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 01:44:33,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:44:33,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1413865502, now seen corresponding path program 1 times [2019-11-20 01:44:33,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:44:33,733 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [317107927] [2019-11-20 01:44:33,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/bin/uautomizer/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:44:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:44:33,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 01:44:33,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:44:33,984 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 01:44:33,984 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:44:34,005 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:44:34,005 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:44:34,005 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 01:44:34,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 01:44:34,087 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:44:34,449 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 01:44:34,449 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [317107927] [2019-11-20 01:44:34,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:44:34,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2019-11-20 01:44:34,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686958797] [2019-11-20 01:44:34,450 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-20 01:44:34,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:44:34,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 01:44:34,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-11-20 01:44:34,450 INFO L87 Difference]: Start difference. First operand 183 states and 195 transitions. Second operand 12 states. [2019-11-20 01:44:36,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:44:36,924 INFO L93 Difference]: Finished difference Result 183 states and 195 transitions. [2019-11-20 01:44:36,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 01:44:36,925 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2019-11-20 01:44:36,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:44:36,926 INFO L225 Difference]: With dead ends: 183 [2019-11-20 01:44:36,926 INFO L226 Difference]: Without dead ends: 183 [2019-11-20 01:44:36,927 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2019-11-20 01:44:36,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2019-11-20 01:44:36,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2019-11-20 01:44:36,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2019-11-20 01:44:36,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 194 transitions. [2019-11-20 01:44:36,934 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 194 transitions. Word has length 36 [2019-11-20 01:44:36,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:44:36,934 INFO L462 AbstractCegarLoop]: Abstraction has 182 states and 194 transitions. [2019-11-20 01:44:36,935 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-20 01:44:36,935 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 194 transitions. [2019-11-20 01:44:36,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-20 01:44:36,936 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:44:36,936 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:44:37,139 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:44:37,139 INFO L410 AbstractCegarLoop]: === Iteration 13 === [dll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr2REQUIRES_VIOLATION, dll_circular_destroyErr3REQUIRES_VIOLATION, dll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr0REQUIRES_VIOLATION, dll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr1REQUIRES_VIOLATION, dll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_insertErr9REQUIRES_VIOLATION, dll_circular_insertErr31REQUIRES_VIOLATION, dll_circular_insertErr30REQUIRES_VIOLATION, dll_circular_insertErr29REQUIRES_VIOLATION, dll_circular_insertErr8REQUIRES_VIOLATION, dll_circular_insertErr12REQUIRES_VIOLATION, dll_circular_insertErr33REQUIRES_VIOLATION, dll_circular_insertErr32REQUIRES_VIOLATION, dll_circular_insertErr10REQUIRES_VIOLATION, dll_circular_insertErr11REQUIRES_VIOLATION, dll_circular_insertErr14REQUIRES_VIOLATION, dll_circular_insertErr15REQUIRES_VIOLATION, dll_circular_insertErr13REQUIRES_VIOLATION, dll_circular_insertErr35REQUIRES_VIOLATION, dll_circular_insertErr34REQUIRES_VIOLATION, dll_circular_insertErr17REQUIRES_VIOLATION, dll_circular_insertErr16REQUIRES_VIOLATION, dll_circular_insertErr20REQUIRES_VIOLATION, dll_circular_insertErr18REQUIRES_VIOLATION, dll_circular_insertErr19REQUIRES_VIOLATION, dll_circular_insertErr1REQUIRES_VIOLATION, dll_circular_insertErr22REQUIRES_VIOLATION, dll_circular_insertErr23REQUIRES_VIOLATION, dll_circular_insertErr21REQUIRES_VIOLATION, dll_circular_insertErr0REQUIRES_VIOLATION, dll_circular_insertErr25REQUIRES_VIOLATION, dll_circular_insertErr4REQUIRES_VIOLATION, dll_circular_insertErr2REQUIRES_VIOLATION, dll_circular_insertErr3REQUIRES_VIOLATION, dll_circular_insertErr24REQUIRES_VIOLATION, dll_circular_insertErr6REQUIRES_VIOLATION, dll_circular_insertErr7REQUIRES_VIOLATION, dll_circular_insertErr28REQUIRES_VIOLATION, dll_circular_insertErr5REQUIRES_VIOLATION, dll_circular_insertErr26REQUIRES_VIOLATION, dll_circular_insertErr27REQUIRES_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, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 01:44:37,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:44:37,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1114443410, now seen corresponding path program 1 times [2019-11-20 01:44:37,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:44:37,140 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1703617536] [2019-11-20 01:44:37,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/bin/uautomizer/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:44:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:44:37,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 01:44:37,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:44:37,403 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-20 01:44:37,403 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:44:37,473 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-20 01:44:37,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1703617536] [2019-11-20 01:44:37,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:44:37,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-11-20 01:44:37,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776443512] [2019-11-20 01:44:37,473 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 01:44:37,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:44:37,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 01:44:37,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-20 01:44:37,474 INFO L87 Difference]: Start difference. First operand 182 states and 194 transitions. Second operand 10 states. [2019-11-20 01:44:37,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:44:37,581 INFO L93 Difference]: Finished difference Result 170 states and 178 transitions. [2019-11-20 01:44:37,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 01:44:37,581 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2019-11-20 01:44:37,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:44:37,582 INFO L225 Difference]: With dead ends: 170 [2019-11-20 01:44:37,583 INFO L226 Difference]: Without dead ends: 170 [2019-11-20 01:44:37,583 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-20 01:44:37,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-11-20 01:44:37,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2019-11-20 01:44:37,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2019-11-20 01:44:37,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 178 transitions. [2019-11-20 01:44:37,587 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 178 transitions. Word has length 47 [2019-11-20 01:44:37,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:44:37,588 INFO L462 AbstractCegarLoop]: Abstraction has 170 states and 178 transitions. [2019-11-20 01:44:37,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 01:44:37,588 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 178 transitions. [2019-11-20 01:44:37,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-20 01:44:37,589 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:44:37,589 INFO L410 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1] [2019-11-20 01:44:37,793 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:44:37,793 INFO L410 AbstractCegarLoop]: === Iteration 14 === [dll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr2REQUIRES_VIOLATION, dll_circular_destroyErr3REQUIRES_VIOLATION, dll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr0REQUIRES_VIOLATION, dll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr1REQUIRES_VIOLATION, dll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, dll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_insertErr9REQUIRES_VIOLATION, dll_circular_insertErr31REQUIRES_VIOLATION, dll_circular_insertErr30REQUIRES_VIOLATION, dll_circular_insertErr29REQUIRES_VIOLATION, dll_circular_insertErr8REQUIRES_VIOLATION, dll_circular_insertErr12REQUIRES_VIOLATION, dll_circular_insertErr33REQUIRES_VIOLATION, dll_circular_insertErr32REQUIRES_VIOLATION, dll_circular_insertErr10REQUIRES_VIOLATION, dll_circular_insertErr11REQUIRES_VIOLATION, dll_circular_insertErr14REQUIRES_VIOLATION, dll_circular_insertErr15REQUIRES_VIOLATION, dll_circular_insertErr13REQUIRES_VIOLATION, dll_circular_insertErr35REQUIRES_VIOLATION, dll_circular_insertErr34REQUIRES_VIOLATION, dll_circular_insertErr17REQUIRES_VIOLATION, dll_circular_insertErr16REQUIRES_VIOLATION, dll_circular_insertErr20REQUIRES_VIOLATION, dll_circular_insertErr18REQUIRES_VIOLATION, dll_circular_insertErr19REQUIRES_VIOLATION, dll_circular_insertErr1REQUIRES_VIOLATION, dll_circular_insertErr22REQUIRES_VIOLATION, dll_circular_insertErr23REQUIRES_VIOLATION, dll_circular_insertErr21REQUIRES_VIOLATION, dll_circular_insertErr0REQUIRES_VIOLATION, dll_circular_insertErr25REQUIRES_VIOLATION, dll_circular_insertErr4REQUIRES_VIOLATION, dll_circular_insertErr2REQUIRES_VIOLATION, dll_circular_insertErr3REQUIRES_VIOLATION, dll_circular_insertErr24REQUIRES_VIOLATION, dll_circular_insertErr6REQUIRES_VIOLATION, dll_circular_insertErr7REQUIRES_VIOLATION, dll_circular_insertErr28REQUIRES_VIOLATION, dll_circular_insertErr5REQUIRES_VIOLATION, dll_circular_insertErr26REQUIRES_VIOLATION, dll_circular_insertErr27REQUIRES_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, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 01:44:37,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:44:37,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1059875281, now seen corresponding path program 1 times [2019-11-20 01:44:37,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:44:37,794 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [563831970] [2019-11-20 01:44:37,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5549e568-0e1a-4bb7-b417-65c815f865ec/bin/uautomizer/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:44:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:44:38,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-20 01:44:38,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:44:38,144 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 01:44:38,144 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:44:38,151 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:44:38,152 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:44:38,152 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-20 01:44:38,179 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2019-11-20 01:44:38,180 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:44:38,187 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:44:38,187 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 01:44:38,187 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:10 [2019-11-20 01:44:38,608 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 01:44:38,666 INFO L343 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2019-11-20 01:44:38,666 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 4 case distinctions, treesize of input 22 treesize of output 36 [2019-11-20 01:44:38,667 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:44:38,753 INFO L567 ElimStorePlain]: treesize reduction 4, result has 88.9 percent of original size [2019-11-20 01:44:38,753 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-11-20 01:44:38,753 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:32 [2019-11-20 01:44:38,986 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 01:44:39,009 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:44:39,009 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 19 treesize of output 52 [2019-11-20 01:44:39,010 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:44:39,066 INFO L567 ElimStorePlain]: treesize reduction 28, result has 50.0 percent of original size [2019-11-20 01:44:39,066 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-11-20 01:44:39,066 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:31, output treesize:28 [2019-11-20 01:44:39,110 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 01:44:39,110 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:45:00,674 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:45:00,675 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-20 01:45:00,678 INFO L168 Benchmark]: Toolchain (without parser) took 99991.45 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 336.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -186.9 MB). Peak memory consumption was 149.7 MB. Max. memory is 11.5 GB. [2019-11-20 01:45:00,678 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:45:00,679 INFO L168 Benchmark]: CACSL2BoogieTranslator took 551.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -168.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-20 01:45:00,679 INFO L168 Benchmark]: Boogie Preprocessor took 81.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-20 01:45:00,679 INFO L168 Benchmark]: RCFGBuilder took 1367.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 81.2 MB). Peak memory consumption was 81.2 MB. Max. memory is 11.5 GB. [2019-11-20 01:45:00,679 INFO L168 Benchmark]: TraceAbstraction took 97980.96 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 198.2 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -106.1 MB). Peak memory consumption was 92.0 MB. Max. memory is 11.5 GB. [2019-11-20 01:45:00,681 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 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 551.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -168.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 81.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1367.51 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: 81.2 MB). Peak memory consumption was 81.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 97980.96 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 198.2 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -106.1 MB). Peak memory consumption was 92.0 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...