./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-2.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_9801cd6d-b4f6-4821-bc9e-99538bb00209/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/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 8aeee5b79c4aa76b6157129a026e191e5e1fb5dc ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: no XNF --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-19 22:55:27,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:55:27,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:55:27,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:55:27,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:55:27,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:55:27,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:55:27,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:55:27,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:55:27,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:55:27,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:55:27,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:55:27,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:55:27,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:55:27,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:55:27,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:55:27,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:55:27,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:55:27,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:55:27,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:55:27,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:55:27,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:55:27,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:55:27,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:55:27,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:55:27,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:55:27,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:55:27,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:55:27,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:55:27,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:55:27,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:55:27,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:55:27,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:55:27,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:55:27,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:55:27,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:55:27,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:55:27,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:55:27,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:55:27,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:55:27,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:55:27,330 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-19 22:55:27,342 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:55:27,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:55:27,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:55:27,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:55:27,344 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:55:27,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:55:27,344 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 22:55:27,344 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 22:55:27,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:55:27,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 22:55:27,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:55:27,357 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-19 22:55:27,357 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-19 22:55:27,357 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-19 22:55:27,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 22:55:27,358 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-19 22:55:27,358 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-19 22:55:27,358 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 22:55:27,358 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:55:27,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:55:27,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:55:27,359 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 22:55:27,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 22:55:27,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:55:27,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:55:27,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 22:55:27,360 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-19 22:55:27,360 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-19 22:55:27,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-19 22:55:27,360 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_9801cd6d-b4f6-4821-bc9e-99538bb00209/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 -> 8aeee5b79c4aa76b6157129a026e191e5e1fb5dc [2019-11-19 22:55:27,506 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:55:27,523 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:55:27,526 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:55:27,534 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:55:27,535 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:55:27,535 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/bin/uautomizer/../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-2.i [2019-11-19 22:55:27,595 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/bin/uautomizer/data/6e1859e64/6170f7af471440b49b7e551be3ed9308/FLAG9fe736760 [2019-11-19 22:55:28,032 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:55:28,033 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-2.i [2019-11-19 22:55:28,045 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/bin/uautomizer/data/6e1859e64/6170f7af471440b49b7e551be3ed9308/FLAG9fe736760 [2019-11-19 22:55:28,339 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/bin/uautomizer/data/6e1859e64/6170f7af471440b49b7e551be3ed9308 [2019-11-19 22:55:28,343 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:55:28,344 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-19 22:55:28,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:55:28,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:55:28,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:55:28,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:55:28" (1/1) ... [2019-11-19 22:55:28,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532bddec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:55:28, skipping insertion in model container [2019-11-19 22:55:28,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:55:28" (1/1) ... [2019-11-19 22:55:28,360 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:55:28,396 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:55:28,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:55:28,880 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:55:28,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:55:28,989 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:55:28,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:55:28 WrapperNode [2019-11-19 22:55:28,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:55:28,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:55:28,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:55:28,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:55:29,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:55:28" (1/1) ... [2019-11-19 22:55:29,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:55:28" (1/1) ... [2019-11-19 22:55:29,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:55:28" (1/1) ... [2019-11-19 22:55:29,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:55:28" (1/1) ... [2019-11-19 22:55:29,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:55:28" (1/1) ... [2019-11-19 22:55:29,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:55:28" (1/1) ... [2019-11-19 22:55:29,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:55:28" (1/1) ... [2019-11-19 22:55:29,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:55:29,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:55:29,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:55:29,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:55:29,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:55:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/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 [2019-11-19 22:55:29,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-19 22:55:29,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:55:29,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-19 22:55:29,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-19 22:55:29,126 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-19 22:55:29,126 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-11-19 22:55:29,126 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-19 22:55:29,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-19 22:55:29,127 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-19 22:55:29,128 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-19 22:55:29,128 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-19 22:55:29,128 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-19 22:55:29,128 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-19 22:55:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-19 22:55:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-19 22:55:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-19 22:55:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-19 22:55:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-19 22:55:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-19 22:55:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-19 22:55:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-19 22:55:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-19 22:55:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-19 22:55:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-19 22:55:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-19 22:55:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-19 22:55:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-19 22:55:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-19 22:55:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-19 22:55:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-19 22:55:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-19 22:55:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-19 22:55:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-19 22:55:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-19 22:55:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-19 22:55:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-19 22:55:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-19 22:55:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-19 22:55:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-19 22:55:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-19 22:55:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-19 22:55:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-19 22:55:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-19 22:55:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-19 22:55:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-19 22:55:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-19 22:55:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-19 22:55:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-19 22:55:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-19 22:55:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-19 22:55:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-19 22:55:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-19 22:55:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-19 22:55:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-19 22:55:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-19 22:55:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-19 22:55:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-19 22:55:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-19 22:55:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-19 22:55:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-19 22:55:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-19 22:55:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-19 22:55:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-19 22:55:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-19 22:55:29,136 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-19 22:55:29,136 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-19 22:55:29,136 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-19 22:55:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-19 22:55:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-19 22:55:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-19 22:55:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-19 22:55:29,139 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-19 22:55:29,139 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-19 22:55:29,140 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-19 22:55:29,140 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-19 22:55:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-19 22:55:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-19 22:55:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-19 22:55:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-19 22:55:29,142 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-19 22:55:29,142 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-19 22:55:29,142 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-19 22:55:29,142 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-19 22:55:29,143 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-19 22:55:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-19 22:55:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-19 22:55:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-19 22:55:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-19 22:55:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-19 22:55:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-19 22:55:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-19 22:55:29,145 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-19 22:55:29,145 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-19 22:55:29,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-19 22:55:29,145 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-19 22:55:29,145 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-19 22:55:29,145 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-19 22:55:29,145 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-19 22:55:29,146 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-19 22:55:29,146 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-19 22:55:29,146 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-19 22:55:29,146 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-19 22:55:29,146 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-19 22:55:29,146 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-19 22:55:29,146 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-19 22:55:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-19 22:55:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-19 22:55:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-19 22:55:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-19 22:55:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-19 22:55:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-19 22:55:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-19 22:55:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-19 22:55:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-19 22:55:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-11-19 22:55:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-19 22:55:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-19 22:55:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-19 22:55:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-19 22:55:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-19 22:55:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-19 22:55:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 22:55:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-19 22:55:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:55:29,516 INFO L689 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-19 22:55:29,853 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:55:29,853 INFO L285 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-19 22:55:29,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:55:29 BoogieIcfgContainer [2019-11-19 22:55:29,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:55:29,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 22:55:29,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 22:55:29,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 22:55:29,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:55:28" (1/3) ... [2019-11-19 22:55:29,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f76e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:55:29, skipping insertion in model container [2019-11-19 22:55:29,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:55:28" (2/3) ... [2019-11-19 22:55:29,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f76e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:55:29, skipping insertion in model container [2019-11-19 22:55:29,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:55:29" (3/3) ... [2019-11-19 22:55:29,862 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_circular_traversal-2.i [2019-11-19 22:55:29,871 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 22:55:29,877 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 24 error locations. [2019-11-19 22:55:29,886 INFO L249 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2019-11-19 22:55:29,904 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 22:55:29,904 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-19 22:55:29,909 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 22:55:29,909 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:55:29,909 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:55:29,910 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 22:55:29,910 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:55:29,910 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 22:55:29,923 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2019-11-19 22:55:29,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-19 22:55:29,930 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:55:29,931 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:55:29,932 INFO L410 AbstractCegarLoop]: === Iteration 1 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:55:29,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:55:29,936 INFO L82 PathProgramCache]: Analyzing trace with hash 231074615, now seen corresponding path program 1 times [2019-11-19 22:55:29,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:55:29,945 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1342730164] [2019-11-19 22:55:29,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/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 [2019-11-19 22:55:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:55:30,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-19 22:55:30,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:55:30,224 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 [2019-11-19 22:55:30,225 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:30,232 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:30,232 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:55:30,232 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-19 22:55:30,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:55:30,240 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:55:30,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:55:30,255 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1342730164] [2019-11-19 22:55:30,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:55:30,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-19 22:55:30,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344327805] [2019-11-19 22:55:30,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 22:55:30,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:55:30,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:55:30,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:55:30,278 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 3 states. [2019-11-19 22:55:30,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:55:30,453 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2019-11-19 22:55:30,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:55:30,455 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-19 22:55:30,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:55:30,464 INFO L225 Difference]: With dead ends: 68 [2019-11-19 22:55:30,465 INFO L226 Difference]: Without dead ends: 60 [2019-11-19 22:55:30,468 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:55:30,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-19 22:55:30,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2019-11-19 22:55:30,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-19 22:55:30,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2019-11-19 22:55:30,517 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 10 [2019-11-19 22:55:30,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:55:30,519 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2019-11-19 22:55:30,519 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 22:55:30,519 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2019-11-19 22:55:30,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-19 22:55:30,520 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:55:30,520 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:55:30,733 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:55:30,734 INFO L410 AbstractCegarLoop]: === Iteration 2 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:55:30,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:55:30,735 INFO L82 PathProgramCache]: Analyzing trace with hash 231074616, now seen corresponding path program 1 times [2019-11-19 22:55:30,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:55:30,737 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1723395184] [2019-11-19 22:55:30,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/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 [2019-11-19 22:55:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:55:30,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 22:55:30,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:55:30,961 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 [2019-11-19 22:55:30,961 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:30,970 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:30,970 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:55:30,971 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-19 22:55:30,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:55:30,985 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:55:31,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:55:31,029 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1723395184] [2019-11-19 22:55:31,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:55:31,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-19 22:55:31,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076287152] [2019-11-19 22:55:31,031 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 22:55:31,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:55:31,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 22:55:31,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:55:31,031 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 4 states. [2019-11-19 22:55:31,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:55:31,227 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2019-11-19 22:55:31,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:55:31,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-19 22:55:31,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:55:31,229 INFO L225 Difference]: With dead ends: 57 [2019-11-19 22:55:31,230 INFO L226 Difference]: Without dead ends: 57 [2019-11-19 22:55:31,231 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:55:31,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-19 22:55:31,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2019-11-19 22:55:31,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-11-19 22:55:31,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2019-11-19 22:55:31,237 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 10 [2019-11-19 22:55:31,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:55:31,237 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2019-11-19 22:55:31,237 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 22:55:31,237 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2019-11-19 22:55:31,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-19 22:55:31,238 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:55:31,238 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:55:31,440 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:55:31,440 INFO L410 AbstractCegarLoop]: === Iteration 3 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:55:31,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:55:31,441 INFO L82 PathProgramCache]: Analyzing trace with hash 693046669, now seen corresponding path program 1 times [2019-11-19 22:55:31,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:55:31,442 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1992278813] [2019-11-19 22:55:31,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/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 [2019-11-19 22:55:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:55:31,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:55:31,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:55:31,700 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:31,700 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 [2019-11-19 22:55:31,701 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:31,723 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-19 22:55:31,724 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. [2019-11-19 22:55:31,724 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2019-11-19 22:55:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:55:31,737 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:55:31,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:55:31,744 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1992278813] [2019-11-19 22:55:31,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:55:31,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 3 [2019-11-19 22:55:31,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413277202] [2019-11-19 22:55:31,745 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 22:55:31,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:55:31,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 22:55:31,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:55:31,745 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 4 states. [2019-11-19 22:55:31,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:55:31,923 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2019-11-19 22:55:31,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 22:55:31,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-19 22:55:31,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:55:31,927 INFO L225 Difference]: With dead ends: 63 [2019-11-19 22:55:31,927 INFO L226 Difference]: Without dead ends: 63 [2019-11-19 22:55:31,927 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:55:31,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-19 22:55:31,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 55. [2019-11-19 22:55:31,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-19 22:55:31,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2019-11-19 22:55:31,934 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 15 [2019-11-19 22:55:31,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:55:31,934 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2019-11-19 22:55:31,934 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 22:55:31,935 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2019-11-19 22:55:31,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-19 22:55:31,935 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:55:31,935 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:55:32,149 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:55:32,150 INFO L410 AbstractCegarLoop]: === Iteration 4 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:55:32,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:55:32,150 INFO L82 PathProgramCache]: Analyzing trace with hash 693046670, now seen corresponding path program 1 times [2019-11-19 22:55:32,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:55:32,151 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [621602644] [2019-11-19 22:55:32,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/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 [2019-11-19 22:55:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:55:32,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 22:55:32,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:55:32,376 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 [2019-11-19 22:55:32,377 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:32,384 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:32,384 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:55:32,385 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-19 22:55:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:55:32,398 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:55:32,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:55:32,437 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [621602644] [2019-11-19 22:55:32,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:55:32,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-19 22:55:32,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496477020] [2019-11-19 22:55:32,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 22:55:32,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:55:32,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 22:55:32,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:55:32,438 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 4 states. [2019-11-19 22:55:32,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:55:32,610 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2019-11-19 22:55:32,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:55:32,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-19 22:55:32,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:55:32,612 INFO L225 Difference]: With dead ends: 58 [2019-11-19 22:55:32,612 INFO L226 Difference]: Without dead ends: 58 [2019-11-19 22:55:32,612 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:55:32,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-19 22:55:32,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2019-11-19 22:55:32,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-19 22:55:32,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2019-11-19 22:55:32,618 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 15 [2019-11-19 22:55:32,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:55:32,618 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2019-11-19 22:55:32,618 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 22:55:32,618 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2019-11-19 22:55:32,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-19 22:55:32,619 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:55:32,619 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:55:32,822 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:55:32,822 INFO L410 AbstractCegarLoop]: === Iteration 5 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:55:32,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:55:32,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1414735189, now seen corresponding path program 1 times [2019-11-19 22:55:32,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:55:32,823 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1873058246] [2019-11-19 22:55:32,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/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 [2019-11-19 22:55:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:55:33,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:55:33,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:55:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:55:33,031 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:55:33,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:55:33,100 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1873058246] [2019-11-19 22:55:33,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:55:33,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-11-19 22:55:33,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943278006] [2019-11-19 22:55:33,101 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-19 22:55:33,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:55:33,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-19 22:55:33,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-19 22:55:33,102 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 7 states. [2019-11-19 22:55:33,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:55:33,149 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2019-11-19 22:55:33,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 22:55:33,150 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-11-19 22:55:33,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:55:33,151 INFO L225 Difference]: With dead ends: 62 [2019-11-19 22:55:33,151 INFO L226 Difference]: Without dead ends: 58 [2019-11-19 22:55:33,151 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-19 22:55:33,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-19 22:55:33,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2019-11-19 22:55:33,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-19 22:55:33,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2019-11-19 22:55:33,157 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 19 [2019-11-19 22:55:33,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:55:33,157 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2019-11-19 22:55:33,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-19 22:55:33,157 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2019-11-19 22:55:33,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-19 22:55:33,158 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:55:33,158 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, 1, 1, 1, 1] [2019-11-19 22:55:33,361 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:55:33,361 INFO L410 AbstractCegarLoop]: === Iteration 6 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:55:33,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:55:33,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1677900577, now seen corresponding path program 1 times [2019-11-19 22:55:33,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:55:33,362 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [349769409] [2019-11-19 22:55:33,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/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 [2019-11-19 22:55:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:55:33,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 22:55:33,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:55:33,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:55:33,595 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:55:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:55:33,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [349769409] [2019-11-19 22:55:33,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:55:33,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-11-19 22:55:33,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134475959] [2019-11-19 22:55:33,794 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-19 22:55:33,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:55:33,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-19 22:55:33,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-19 22:55:33,795 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 9 states. [2019-11-19 22:55:33,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:55:33,928 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2019-11-19 22:55:33,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-19 22:55:33,934 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2019-11-19 22:55:33,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:55:33,935 INFO L225 Difference]: With dead ends: 67 [2019-11-19 22:55:33,935 INFO L226 Difference]: Without dead ends: 63 [2019-11-19 22:55:33,935 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-19 22:55:33,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-19 22:55:33,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2019-11-19 22:55:33,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-19 22:55:33,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2019-11-19 22:55:33,939 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 24 [2019-11-19 22:55:33,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:55:33,939 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2019-11-19 22:55:33,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-19 22:55:33,939 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2019-11-19 22:55:33,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-19 22:55:33,940 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:55:33,940 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:55:34,140 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:55:34,141 INFO L410 AbstractCegarLoop]: === Iteration 7 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:55:34,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:55:34,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1615547285, now seen corresponding path program 2 times [2019-11-19 22:55:34,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:55:34,142 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [314980544] [2019-11-19 22:55:34,142 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/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 [2019-11-19 22:55:34,384 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-19 22:55:34,384 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:55:34,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-19 22:55:34,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:55:34,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:55:34,460 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:55:34,679 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:55:34,679 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [314980544] [2019-11-19 22:55:34,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:55:34,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2019-11-19 22:55:34,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342246713] [2019-11-19 22:55:34,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-19 22:55:34,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:55:34,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-19 22:55:34,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-11-19 22:55:34,681 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 11 states. [2019-11-19 22:55:34,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:55:34,895 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2019-11-19 22:55:34,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-19 22:55:34,901 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2019-11-19 22:55:34,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:55:34,902 INFO L225 Difference]: With dead ends: 72 [2019-11-19 22:55:34,902 INFO L226 Difference]: Without dead ends: 68 [2019-11-19 22:55:34,903 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2019-11-19 22:55:34,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-19 22:55:34,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2019-11-19 22:55:34,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-11-19 22:55:34,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2019-11-19 22:55:34,908 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 29 [2019-11-19 22:55:34,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:55:34,908 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2019-11-19 22:55:34,908 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-19 22:55:34,908 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2019-11-19 22:55:34,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-19 22:55:34,910 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:55:34,910 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:55:35,110 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:55:35,110 INFO L410 AbstractCegarLoop]: === Iteration 8 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:55:35,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:55:35,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1872558433, now seen corresponding path program 3 times [2019-11-19 22:55:35,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:55:35,111 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1501569976] [2019-11-19 22:55:35,111 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/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 [2019-11-19 22:55:35,290 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-19 22:55:35,290 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:55:35,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-19 22:55:35,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:55:35,341 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-19 22:55:35,342 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:55:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-19 22:55:35,433 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1501569976] [2019-11-19 22:55:35,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:55:35,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2019-11-19 22:55:35,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059523043] [2019-11-19 22:55:35,434 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-19 22:55:35,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:55:35,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-19 22:55:35,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-19 22:55:35,434 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 7 states. [2019-11-19 22:55:35,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:55:35,924 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2019-11-19 22:55:35,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-19 22:55:35,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2019-11-19 22:55:35,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:55:35,926 INFO L225 Difference]: With dead ends: 62 [2019-11-19 22:55:35,926 INFO L226 Difference]: Without dead ends: 62 [2019-11-19 22:55:35,926 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-19 22:55:35,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-11-19 22:55:35,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2019-11-19 22:55:35,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-19 22:55:35,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2019-11-19 22:55:35,931 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 34 [2019-11-19 22:55:35,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:55:35,931 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2019-11-19 22:55:35,931 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-19 22:55:35,931 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2019-11-19 22:55:35,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-19 22:55:35,932 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:55:35,932 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:55:36,137 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:55:36,137 INFO L410 AbstractCegarLoop]: === Iteration 9 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:55:36,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:55:36,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1872558432, now seen corresponding path program 1 times [2019-11-19 22:55:36,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:55:36,138 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [612555197] [2019-11-19 22:55:36,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/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 [2019-11-19 22:55:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:55:36,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 22:55:36,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:55:36,462 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:55:36,462 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:55:36,716 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:55:36,717 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [612555197] [2019-11-19 22:55:36,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:55:36,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2019-11-19 22:55:36,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654603721] [2019-11-19 22:55:36,718 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-19 22:55:36,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:55:36,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-19 22:55:36,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-11-19 22:55:36,718 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 13 states. [2019-11-19 22:55:37,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:55:37,009 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2019-11-19 22:55:37,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-19 22:55:37,010 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2019-11-19 22:55:37,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:55:37,011 INFO L225 Difference]: With dead ends: 74 [2019-11-19 22:55:37,011 INFO L226 Difference]: Without dead ends: 70 [2019-11-19 22:55:37,011 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2019-11-19 22:55:37,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-11-19 22:55:37,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2019-11-19 22:55:37,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-19 22:55:37,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2019-11-19 22:55:37,016 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 34 [2019-11-19 22:55:37,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:55:37,017 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2019-11-19 22:55:37,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-19 22:55:37,017 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2019-11-19 22:55:37,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-19 22:55:37,018 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:55:37,018 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:55:37,221 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:55:37,222 INFO L410 AbstractCegarLoop]: === Iteration 10 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:55:37,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:55:37,222 INFO L82 PathProgramCache]: Analyzing trace with hash 33071574, now seen corresponding path program 2 times [2019-11-19 22:55:37,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:55:37,222 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1433949656] [2019-11-19 22:55:37,223 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/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 [2019-11-19 22:55:37,509 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-19 22:55:37,510 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:55:37,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-19 22:55:37,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:55:37,527 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 [2019-11-19 22:55:37,527 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:37,532 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:37,532 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:55:37,532 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-19 22:55:37,584 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-19 22:55:37,584 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:55:38,002 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-19 22:55:38,002 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1433949656] [2019-11-19 22:55:38,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:55:38,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2019-11-19 22:55:38,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604555185] [2019-11-19 22:55:38,003 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-19 22:55:38,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:55:38,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-19 22:55:38,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-11-19 22:55:38,004 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 12 states. [2019-11-19 22:55:38,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:55:38,710 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2019-11-19 22:55:38,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-19 22:55:38,710 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2019-11-19 22:55:38,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:55:38,711 INFO L225 Difference]: With dead ends: 69 [2019-11-19 22:55:38,711 INFO L226 Difference]: Without dead ends: 69 [2019-11-19 22:55:38,712 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2019-11-19 22:55:38,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-11-19 22:55:38,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2019-11-19 22:55:38,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-19 22:55:38,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2019-11-19 22:55:38,716 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 39 [2019-11-19 22:55:38,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:55:38,716 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2019-11-19 22:55:38,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-19 22:55:38,717 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2019-11-19 22:55:38,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-19 22:55:38,718 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:55:38,718 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2019-11-19 22:55:38,921 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:55:38,922 INFO L410 AbstractCegarLoop]: === Iteration 11 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:55:38,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:55:38,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1757409253, now seen corresponding path program 1 times [2019-11-19 22:55:38,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:55:38,923 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [464353949] [2019-11-19 22:55:38,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/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 [2019-11-19 22:55:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:55:39,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-19 22:55:39,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:55:39,324 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 [2019-11-19 22:55:39,324 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:39,326 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:39,326 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:55:39,326 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:9, output treesize:3 [2019-11-19 22:55:39,333 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 [2019-11-19 22:55:39,333 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:39,339 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:39,339 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:55:39,339 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-19 22:55:39,386 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:39,387 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 [2019-11-19 22:55:39,387 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:39,408 INFO L567 ElimStorePlain]: treesize reduction 14, result has 54.8 percent of original size [2019-11-19 22:55:39,408 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:55:39,408 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:17 [2019-11-19 22:55:39,432 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-19 22:55:39,432 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:39,458 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:39,458 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:55:39,459 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:23 [2019-11-19 22:55:39,486 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:55:39,488 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 29 treesize of output 13 [2019-11-19 22:55:39,488 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:39,498 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:39,498 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:55:39,498 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:23 [2019-11-19 22:55:39,537 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:39,538 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 38 [2019-11-19 22:55:39,538 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:55:39,541 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:55:39,542 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:39,575 INFO L567 ElimStorePlain]: treesize reduction 12, result has 75.0 percent of original size [2019-11-19 22:55:39,576 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:55:39,577 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:39,577 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:36 [2019-11-19 22:55:39,577 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:55:39,613 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:55:39,744 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:55:39,750 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:39,750 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 36 treesize of output 31 [2019-11-19 22:55:39,751 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:39,771 INFO L567 ElimStorePlain]: treesize reduction 12, result has 69.2 percent of original size [2019-11-19 22:55:39,771 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:39,771 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:46, output treesize:27 [2019-11-19 22:55:39,794 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:39,794 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2019-11-19 22:55:39,795 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:55:39,796 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:55:39,797 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:39,818 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:39,819 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:55:39,820 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:39,820 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:23 [2019-11-19 22:55:39,913 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-19 22:55:39,914 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:55:39,984 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:39,989 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:39,990 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:39,990 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:14 [2019-11-19 22:55:40,257 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2019-11-19 22:55:40,456 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2019-11-19 22:55:40,599 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2019-11-19 22:55:40,750 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:40,755 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:40,756 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:40,756 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:39 [2019-11-19 22:55:40,834 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:40,852 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:40,852 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:55:40,852 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:28 [2019-11-19 22:55:40,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:55:40,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:55:41,093 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:41,097 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:41,097 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:55:41,097 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:1 [2019-11-19 22:55:41,105 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-19 22:55:41,105 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [464353949] [2019-11-19 22:55:41,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:55:41,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2019-11-19 22:55:41,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700299513] [2019-11-19 22:55:41,107 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-19 22:55:41,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:55:41,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-19 22:55:41,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2019-11-19 22:55:41,108 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand 23 states. [2019-11-19 22:55:44,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:55:44,904 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2019-11-19 22:55:44,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-19 22:55:44,904 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 45 [2019-11-19 22:55:44,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:55:44,905 INFO L225 Difference]: With dead ends: 75 [2019-11-19 22:55:44,905 INFO L226 Difference]: Without dead ends: 75 [2019-11-19 22:55:44,906 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=167, Invalid=703, Unknown=0, NotChecked=0, Total=870 [2019-11-19 22:55:44,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-11-19 22:55:44,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2019-11-19 22:55:44,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-11-19 22:55:44,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2019-11-19 22:55:44,911 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 45 [2019-11-19 22:55:44,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:55:44,911 INFO L462 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2019-11-19 22:55:44,911 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-19 22:55:44,911 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2019-11-19 22:55:44,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-19 22:55:44,913 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:55:44,913 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2019-11-19 22:55:45,121 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:55:45,122 INFO L410 AbstractCegarLoop]: === Iteration 12 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:55:45,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:55:45,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1757409254, now seen corresponding path program 1 times [2019-11-19 22:55:45,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:55:45,123 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [548811916] [2019-11-19 22:55:45,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9801cd6d-b4f6-4821-bc9e-99538bb00209/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 [2019-11-19 22:55:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:55:45,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 37 conjunts are in the unsatisfiable core [2019-11-19 22:55:45,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:55:45,530 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 [2019-11-19 22:55:45,531 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:45,539 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:45,539 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:55:45,539 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-19 22:55:45,597 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:45,598 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 [2019-11-19 22:55:45,598 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:45,637 INFO L567 ElimStorePlain]: treesize reduction 14, result has 58.8 percent of original size [2019-11-19 22:55:45,638 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:55:45,638 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:20 [2019-11-19 22:55:45,662 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-19 22:55:45,662 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:45,679 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:45,683 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-19 22:55:45,683 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:45,715 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:45,716 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:55:45,716 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:41, output treesize:28 [2019-11-19 22:55:45,755 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:55:45,756 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 29 treesize of output 13 [2019-11-19 22:55:45,757 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:45,780 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:45,784 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:55:45,785 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 11 [2019-11-19 22:55:45,785 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:45,796 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:45,797 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:55:45,797 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:66, output treesize:30 [2019-11-19 22:55:45,861 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:45,861 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 38 [2019-11-19 22:55:45,862 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:55:45,863 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:55:45,863 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:45,911 INFO L567 ElimStorePlain]: treesize reduction 12, result has 81.8 percent of original size [2019-11-19 22:55:45,931 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:45,931 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 34 [2019-11-19 22:55:45,932 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:45,975 INFO L567 ElimStorePlain]: treesize reduction 16, result has 75.8 percent of original size [2019-11-19 22:55:45,976 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:55:45,976 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:45,977 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:51, output treesize:50 [2019-11-19 22:55:45,977 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:55:46,005 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:55:46,228 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:55:46,234 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:46,234 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 38 treesize of output 33 [2019-11-19 22:55:46,235 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:46,301 INFO L567 ElimStorePlain]: treesize reduction 12, result has 84.6 percent of original size [2019-11-19 22:55:46,308 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:55:46,313 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:46,314 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 34 treesize of output 29 [2019-11-19 22:55:46,314 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:46,384 INFO L567 ElimStorePlain]: treesize reduction 12, result has 79.7 percent of original size [2019-11-19 22:55:46,384 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:46,385 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:85, output treesize:47 [2019-11-19 22:55:46,397 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:46,397 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 22 [2019-11-19 22:55:46,398 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:46,417 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:46,426 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:46,426 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 18 [2019-11-19 22:55:46,426 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:46,440 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:46,440 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:55:46,440 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:55, output treesize:17 [2019-11-19 22:55:46,503 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:55:46,562 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-19 22:55:46,562 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:55:46,979 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-19 22:55:46,979 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:55:46,980 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:55:46,980 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:55:46,991 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:46,999 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:47,008 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:47,017 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:47,025 INFO L496 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:47,034 INFO L496 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:47,131 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:47,139 INFO L496 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:47,145 INFO L496 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:47,151 INFO L496 ElimStorePlain]: Start of recursive call 10: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:47,156 INFO L496 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:47,161 INFO L496 ElimStorePlain]: Start of recursive call 12: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:47,166 INFO L496 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:47,222 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:47,223 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 10 dim-0 vars, and 6 xjuncts. [2019-11-19 22:55:47,224 INFO L221 ElimStorePlain]: Needed 13 recursive calls to eliminate 2 variables, input treesize:367, output treesize:207 [2019-11-19 22:55:48,289 WARN L191 SmtUtils]: Spent 818.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2019-11-19 22:55:48,604 WARN L191 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2019-11-19 22:55:48,914 WARN L191 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-11-19 22:55:49,208 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-11-19 22:55:49,865 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:55:49,866 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-19 22:55:49,867 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-19 22:55:49,886 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:49,892 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:49,898 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:49,907 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:49,929 INFO L496 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:49,936 INFO L496 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:50,406 WARN L191 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2019-11-19 22:55:50,406 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:50,418 INFO L496 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:50,432 INFO L496 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:50,455 INFO L496 ElimStorePlain]: Start of recursive call 10: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:50,477 INFO L496 ElimStorePlain]: Start of recursive call 11: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:50,509 INFO L496 ElimStorePlain]: Start of recursive call 12: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:50,528 INFO L496 ElimStorePlain]: Start of recursive call 13: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:55:51,623 WARN L191 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 122 [2019-11-19 22:55:51,623 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:55:51,624 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 10 dim-0 vars, and 6 xjuncts. [2019-11-19 22:55:51,624 INFO L221 ElimStorePlain]: Needed 13 recursive calls to eliminate 2 variables, input treesize:495, output treesize:575 [2019-11-19 22:55:52,432 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:55:52,432 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-19 22:55:52,433 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-19 22:55:52,455 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:52,467 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:52,478 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:52,487 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:52,787 WARN L191 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2019-11-19 22:55:52,787 INFO L567 ElimStorePlain]: treesize reduction 84, result has 84.0 percent of original size [2019-11-19 22:55:52,795 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:52,805 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-19 22:55:53,006 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:55:53,006 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: no XNF at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:244) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-19 22:55:53,010 INFO L168 Benchmark]: Toolchain (without parser) took 24666.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.2 MB). Free memory was 939.4 MB in the beginning and 985.1 MB in the end (delta: -45.7 MB). Peak memory consumption was 141.4 MB. Max. memory is 11.5 GB. [2019-11-19 22:55:53,010 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:55:53,011 INFO L168 Benchmark]: CACSL2BoogieTranslator took 646.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -177.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-19 22:55:53,011 INFO L168 Benchmark]: Boogie Preprocessor took 72.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-19 22:55:53,011 INFO L168 Benchmark]: RCFGBuilder took 791.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. [2019-11-19 22:55:53,011 INFO L168 Benchmark]: TraceAbstraction took 23153.50 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 51.4 MB). Free memory was 1.1 GB in the beginning and 985.1 MB in the end (delta: 71.8 MB). Peak memory consumption was 123.2 MB. Max. memory is 11.5 GB. [2019-11-19 22:55:53,013 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 646.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -177.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 72.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 791.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 23153.50 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 51.4 MB). Free memory was 1.1 GB in the beginning and 985.1 MB in the end (delta: 71.8 MB). Peak memory consumption was 123.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: no XNF de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: no XNF: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:244) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...