./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-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_f356eaa7-bff4-4ea7-a729-4e7d1eb2e0a3/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f356eaa7-bff4-4ea7-a729-4e7d1eb2e0a3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f356eaa7-bff4-4ea7-a729-4e7d1eb2e0a3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f356eaa7-bff4-4ea7-a729-4e7d1eb2e0a3/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f356eaa7-bff4-4ea7-a729-4e7d1eb2e0a3/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f356eaa7-bff4-4ea7-a729-4e7d1eb2e0a3/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 75d2739bd782575ec6c25559f2b36c2d3e75b585 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 11:36:32,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 11:36:32,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 11:36:32,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 11:36:32,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 11:36:32,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 11:36:32,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 11:36:32,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 11:36:32,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 11:36:32,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 11:36:32,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 11:36:32,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 11:36:32,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 11:36:32,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 11:36:32,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 11:36:32,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 11:36:32,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 11:36:32,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 11:36:32,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 11:36:32,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 11:36:32,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 11:36:32,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 11:36:32,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 11:36:32,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 11:36:32,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 11:36:32,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 11:36:32,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 11:36:32,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 11:36:32,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 11:36:32,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 11:36:32,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 11:36:32,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 11:36:32,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 11:36:32,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 11:36:32,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 11:36:32,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 11:36:32,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 11:36:32,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 11:36:32,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 11:36:32,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 11:36:32,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 11:36:32,969 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f356eaa7-bff4-4ea7-a729-4e7d1eb2e0a3/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 11:36:32,986 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 11:36:32,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 11:36:32,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 11:36:32,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 11:36:32,988 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 11:36:32,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 11:36:32,988 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 11:36:32,989 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 11:36:32,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 11:36:32,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 11:36:32,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 11:36:32,990 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 11:36:32,990 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 11:36:32,990 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 11:36:32,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 11:36:32,991 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 11:36:32,991 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 11:36:32,991 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 11:36:32,991 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 11:36:32,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 11:36:32,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 11:36:32,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 11:36:32,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 11:36:32,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 11:36:32,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 11:36:32,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 11:36:32,993 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 11:36:32,993 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 11:36:32,993 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 11:36:32,993 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_f356eaa7-bff4-4ea7-a729-4e7d1eb2e0a3/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 -> 75d2739bd782575ec6c25559f2b36c2d3e75b585 [2019-11-20 11:36:33,130 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 11:36:33,139 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 11:36:33,142 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 11:36:33,143 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 11:36:33,144 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 11:36:33,144 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f356eaa7-bff4-4ea7-a729-4e7d1eb2e0a3/bin/uautomizer/../../sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-2.i [2019-11-20 11:36:33,192 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f356eaa7-bff4-4ea7-a729-4e7d1eb2e0a3/bin/uautomizer/data/a43b1117b/39ca9d2e0ed348bd85671a5e727417db/FLAG7b9d6c316 [2019-11-20 11:36:33,651 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 11:36:33,652 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f356eaa7-bff4-4ea7-a729-4e7d1eb2e0a3/sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-2.i [2019-11-20 11:36:33,664 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f356eaa7-bff4-4ea7-a729-4e7d1eb2e0a3/bin/uautomizer/data/a43b1117b/39ca9d2e0ed348bd85671a5e727417db/FLAG7b9d6c316 [2019-11-20 11:36:33,676 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f356eaa7-bff4-4ea7-a729-4e7d1eb2e0a3/bin/uautomizer/data/a43b1117b/39ca9d2e0ed348bd85671a5e727417db [2019-11-20 11:36:33,679 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 11:36:33,680 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 11:36:33,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 11:36:33,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 11:36:33,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 11:36:33,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:36:33" (1/1) ... [2019-11-20 11:36:33,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b408e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:33, skipping insertion in model container [2019-11-20 11:36:33,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:36:33" (1/1) ... [2019-11-20 11:36:33,701 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 11:36:33,754 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 11:36:34,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:36:34,155 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 11:36:34,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:36:34,277 INFO L192 MainTranslator]: Completed translation [2019-11-20 11:36:34,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:34 WrapperNode [2019-11-20 11:36:34,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 11:36:34,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 11:36:34,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 11:36:34,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 11:36:34,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:34" (1/1) ... [2019-11-20 11:36:34,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:34" (1/1) ... [2019-11-20 11:36:34,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:34" (1/1) ... [2019-11-20 11:36:34,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:34" (1/1) ... [2019-11-20 11:36:34,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:34" (1/1) ... [2019-11-20 11:36:34,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:34" (1/1) ... [2019-11-20 11:36:34,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:34" (1/1) ... [2019-11-20 11:36:34,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 11:36:34,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 11:36:34,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 11:36:34,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 11:36:34,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f356eaa7-bff4-4ea7-a729-4e7d1eb2e0a3/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 11:36:34,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 11:36:34,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 11:36:34,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 11:36:34,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 11:36:34,435 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-20 11:36:34,436 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-11-20 11:36:34,436 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2019-11-20 11:36:34,436 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-11-20 11:36:34,437 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2019-11-20 11:36:34,437 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2019-11-20 11:36:34,437 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 11:36:34,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-20 11:36:34,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 11:36:34,438 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 11:36:34,438 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 11:36:34,439 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 11:36:34,439 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 11:36:34,440 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 11:36:34,440 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 11:36:34,440 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 11:36:34,440 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 11:36:34,440 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 11:36:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 11:36:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 11:36:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 11:36:34,442 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 11:36:34,442 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 11:36:34,442 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 11:36:34,443 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 11:36:34,443 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 11:36:34,443 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 11:36:34,443 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 11:36:34,443 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 11:36:34,444 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 11:36:34,444 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 11:36:34,444 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 11:36:34,444 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 11:36:34,444 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 11:36:34,444 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 11:36:34,445 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 11:36:34,445 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 11:36:34,445 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 11:36:34,445 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 11:36:34,445 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 11:36:34,445 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 11:36:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 11:36:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 11:36:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 11:36:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 11:36:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 11:36:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 11:36:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 11:36:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 11:36:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 11:36:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 11:36:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 11:36:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 11:36:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 11:36:34,448 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 11:36:34,448 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 11:36:34,448 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 11:36:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 11:36:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 11:36:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 11:36:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 11:36:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 11:36:34,450 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 11:36:34,450 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 11:36:34,451 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 11:36:34,451 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-20 11:36:34,452 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 11:36:34,452 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 11:36:34,453 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 11:36:34,453 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 11:36:34,454 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 11:36:34,454 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 11:36:34,454 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 11:36:34,454 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 11:36:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 11:36:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 11:36:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 11:36:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 11:36:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 11:36:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 11:36:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 11:36:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 11:36:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 11:36:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 11:36:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 11:36:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 11:36:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 11:36:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 11:36:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 11:36:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 11:36:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 11:36:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 11:36:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 11:36:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 11:36:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 11:36:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 11:36:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 11:36:34,459 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 11:36:34,459 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 11:36:34,459 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 11:36:34,459 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 11:36:34,459 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 11:36:34,459 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 11:36:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 11:36:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 11:36:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 11:36:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 11:36:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 11:36:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 11:36:34,461 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 11:36:34,461 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 11:36:34,461 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 11:36:34,461 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 11:36:34,461 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 11:36:34,462 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-20 11:36:34,462 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-11-20 11:36:34,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 11:36:34,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 11:36:34,463 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2019-11-20 11:36:34,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 11:36:34,463 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-11-20 11:36:34,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 11:36:34,463 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2019-11-20 11:36:34,464 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2019-11-20 11:36:34,464 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 11:36:34,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 11:36:34,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-20 11:36:34,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 11:36:34,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 11:36:34,804 INFO L689 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-20 11:36:35,167 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 11:36:35,167 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 11:36:35,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:35 BoogieIcfgContainer [2019-11-20 11:36:35,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 11:36:35,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 11:36:35,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 11:36:35,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 11:36:35,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:36:33" (1/3) ... [2019-11-20 11:36:35,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2b973d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:36:35, skipping insertion in model container [2019-11-20 11:36:35,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:34" (2/3) ... [2019-11-20 11:36:35,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2b973d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:36:35, skipping insertion in model container [2019-11-20 11:36:35,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:35" (3/3) ... [2019-11-20 11:36:35,185 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-2.i [2019-11-20 11:36:35,203 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 11:36:35,210 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 24 error locations. [2019-11-20 11:36:35,220 INFO L249 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2019-11-20 11:36:35,238 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 11:36:35,238 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 11:36:35,238 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 11:36:35,238 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 11:36:35,238 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 11:36:35,239 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 11:36:35,239 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 11:36:35,239 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 11:36:35,263 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2019-11-20 11:36:35,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 11:36:35,271 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:36:35,272 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:36:35,272 INFO L410 AbstractCegarLoop]: === Iteration 1 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, sll_insertErr6REQUIRES_VIOLATION, sll_insertErr0REQUIRES_VIOLATION, sll_insertErr1REQUIRES_VIOLATION, sll_insertErr7REQUIRES_VIOLATION, sll_insertErr5REQUIRES_VIOLATION, sll_insertErr9REQUIRES_VIOLATION, sll_insertErr4REQUIRES_VIOLATION, sll_insertErr2REQUIRES_VIOLATION, sll_insertErr8REQUIRES_VIOLATION, sll_insertErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2019-11-20 11:36:35,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:36:35,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1102659065, now seen corresponding path program 1 times [2019-11-20 11:36:35,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:36:35,287 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1473484776] [2019-11-20 11:36:35,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f356eaa7-bff4-4ea7-a729-4e7d1eb2e0a3/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:36:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:36:35,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 11:36:35,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:36:35,542 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 11:36:35,543 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:36:35,553 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:36:35,554 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:36:35,554 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 11:36:35,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:36:35,563 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:36:35,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:36:35,588 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1473484776] [2019-11-20 11:36:35,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:36:35,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 11:36:35,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172326515] [2019-11-20 11:36:35,598 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 11:36:35,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:36:35,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 11:36:35,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 11:36:35,615 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 3 states. [2019-11-20 11:36:35,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:36:35,753 INFO L93 Difference]: Finished difference Result 104 states and 115 transitions. [2019-11-20 11:36:35,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 11:36:35,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-11-20 11:36:35,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:36:35,769 INFO L225 Difference]: With dead ends: 104 [2019-11-20 11:36:35,769 INFO L226 Difference]: Without dead ends: 96 [2019-11-20 11:36:35,773 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 11:36:35,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-11-20 11:36:35,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2019-11-20 11:36:35,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-11-20 11:36:35,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2019-11-20 11:36:35,842 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 18 [2019-11-20 11:36:35,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:36:35,844 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2019-11-20 11:36:35,844 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 11:36:35,844 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2019-11-20 11:36:35,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 11:36:35,845 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:36:35,846 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:36:36,046 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:36:36,047 INFO L410 AbstractCegarLoop]: === Iteration 2 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, sll_insertErr6REQUIRES_VIOLATION, sll_insertErr0REQUIRES_VIOLATION, sll_insertErr1REQUIRES_VIOLATION, sll_insertErr7REQUIRES_VIOLATION, sll_insertErr5REQUIRES_VIOLATION, sll_insertErr9REQUIRES_VIOLATION, sll_insertErr4REQUIRES_VIOLATION, sll_insertErr2REQUIRES_VIOLATION, sll_insertErr8REQUIRES_VIOLATION, sll_insertErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2019-11-20 11:36:36,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:36:36,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1102659066, now seen corresponding path program 1 times [2019-11-20 11:36:36,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:36:36,048 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1788218954] [2019-11-20 11:36:36,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f356eaa7-bff4-4ea7-a729-4e7d1eb2e0a3/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:36:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:36:36,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 11:36:36,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:36:36,250 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 11:36:36,250 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:36:36,258 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:36:36,258 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:36:36,259 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 11:36:36,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:36:36,276 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:36:36,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:36:36,312 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1788218954] [2019-11-20 11:36:36,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:36:36,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 11:36:36,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667298106] [2019-11-20 11:36:36,314 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 11:36:36,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:36:36,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 11:36:36,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 11:36:36,315 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand 4 states. [2019-11-20 11:36:36,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:36:36,533 INFO L93 Difference]: Finished difference Result 95 states and 104 transitions. [2019-11-20 11:36:36,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 11:36:36,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-20 11:36:36,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:36:36,535 INFO L225 Difference]: With dead ends: 95 [2019-11-20 11:36:36,535 INFO L226 Difference]: Without dead ends: 95 [2019-11-20 11:36:36,536 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 11:36:36,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-11-20 11:36:36,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2019-11-20 11:36:36,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-11-20 11:36:36,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2019-11-20 11:36:36,547 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 18 [2019-11-20 11:36:36,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:36:36,547 INFO L462 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2019-11-20 11:36:36,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 11:36:36,548 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2019-11-20 11:36:36,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-20 11:36:36,549 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:36:36,549 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:36:36,751 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:36:36,752 INFO L410 AbstractCegarLoop]: === Iteration 3 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, sll_insertErr6REQUIRES_VIOLATION, sll_insertErr0REQUIRES_VIOLATION, sll_insertErr1REQUIRES_VIOLATION, sll_insertErr7REQUIRES_VIOLATION, sll_insertErr5REQUIRES_VIOLATION, sll_insertErr9REQUIRES_VIOLATION, sll_insertErr4REQUIRES_VIOLATION, sll_insertErr2REQUIRES_VIOLATION, sll_insertErr8REQUIRES_VIOLATION, sll_insertErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2019-11-20 11:36:36,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:36:36,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1129535676, now seen corresponding path program 1 times [2019-11-20 11:36:36,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:36:36,753 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1400743314] [2019-11-20 11:36:36,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f356eaa7-bff4-4ea7-a729-4e7d1eb2e0a3/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:36:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:36:36,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 11:36:36,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:36:37,056 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:36:37,056 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:36:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 11:36:37,302 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1400743314] [2019-11-20 11:36:37,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-20 11:36:37,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 15 [2019-11-20 11:36:37,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139465154] [2019-11-20 11:36:37,303 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 11:36:37,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:36:37,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 11:36:37,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-11-20 11:36:37,304 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand 9 states. [2019-11-20 11:36:37,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:36:37,546 INFO L93 Difference]: Finished difference Result 121 states and 141 transitions. [2019-11-20 11:36:37,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 11:36:37,548 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2019-11-20 11:36:37,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:36:37,550 INFO L225 Difference]: With dead ends: 121 [2019-11-20 11:36:37,550 INFO L226 Difference]: Without dead ends: 121 [2019-11-20 11:36:37,550 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-11-20 11:36:37,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2019-11-20 11:36:37,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 101. [2019-11-20 11:36:37,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-11-20 11:36:37,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 114 transitions. [2019-11-20 11:36:37,583 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 114 transitions. Word has length 29 [2019-11-20 11:36:37,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:36:37,584 INFO L462 AbstractCegarLoop]: Abstraction has 101 states and 114 transitions. [2019-11-20 11:36:37,584 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 11:36:37,584 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 114 transitions. [2019-11-20 11:36:37,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-20 11:36:37,586 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:36:37,587 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:36:37,797 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:36:37,797 INFO L410 AbstractCegarLoop]: === Iteration 4 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, sll_insertErr6REQUIRES_VIOLATION, sll_insertErr0REQUIRES_VIOLATION, sll_insertErr1REQUIRES_VIOLATION, sll_insertErr7REQUIRES_VIOLATION, sll_insertErr5REQUIRES_VIOLATION, sll_insertErr9REQUIRES_VIOLATION, sll_insertErr4REQUIRES_VIOLATION, sll_insertErr2REQUIRES_VIOLATION, sll_insertErr8REQUIRES_VIOLATION, sll_insertErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2019-11-20 11:36:37,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:36:37,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1631709036, now seen corresponding path program 1 times [2019-11-20 11:36:37,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:36:37,798 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [763408473] [2019-11-20 11:36:37,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f356eaa7-bff4-4ea7-a729-4e7d1eb2e0a3/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:36:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:36:38,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 11:36:38,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:36:38,137 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:36:38,137 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:36:38,514 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 11:36:38,514 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [763408473] [2019-11-20 11:36:38,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 11:36:38,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2019-11-20 11:36:38,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891336703] [2019-11-20 11:36:38,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-20 11:36:38,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:36:38,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-20 11:36:38,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2019-11-20 11:36:38,516 INFO L87 Difference]: Start difference. First operand 101 states and 114 transitions. Second operand 17 states. [2019-11-20 11:36:39,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:36:39,286 INFO L93 Difference]: Finished difference Result 140 states and 174 transitions. [2019-11-20 11:36:39,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-20 11:36:39,293 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 30 [2019-11-20 11:36:39,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:36:39,295 INFO L225 Difference]: With dead ends: 140 [2019-11-20 11:36:39,295 INFO L226 Difference]: Without dead ends: 137 [2019-11-20 11:36:39,295 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2019-11-20 11:36:39,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2019-11-20 11:36:39,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 92. [2019-11-20 11:36:39,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-11-20 11:36:39,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2019-11-20 11:36:39,309 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 30 [2019-11-20 11:36:39,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:36:39,309 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2019-11-20 11:36:39,309 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-20 11:36:39,309 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2019-11-20 11:36:39,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 11:36:39,311 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:36:39,311 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, 1, 1, 1, 1, 1] [2019-11-20 11:36:39,511 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:36:39,512 INFO L410 AbstractCegarLoop]: === Iteration 5 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, sll_insertErr6REQUIRES_VIOLATION, sll_insertErr0REQUIRES_VIOLATION, sll_insertErr1REQUIRES_VIOLATION, sll_insertErr7REQUIRES_VIOLATION, sll_insertErr5REQUIRES_VIOLATION, sll_insertErr9REQUIRES_VIOLATION, sll_insertErr4REQUIRES_VIOLATION, sll_insertErr2REQUIRES_VIOLATION, sll_insertErr8REQUIRES_VIOLATION, sll_insertErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2019-11-20 11:36:39,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:36:39,512 INFO L82 PathProgramCache]: Analyzing trace with hash 2129004606, now seen corresponding path program 1 times [2019-11-20 11:36:39,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:36:39,512 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1416680879] [2019-11-20 11:36:39,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f356eaa7-bff4-4ea7-a729-4e7d1eb2e0a3/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:36:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:36:39,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 11:36:39,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:36:39,800 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:36:39,801 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:36:40,164 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 11:36:40,164 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1416680879] [2019-11-20 11:36:40,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 11:36:40,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2019-11-20 11:36:40,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578915471] [2019-11-20 11:36:40,165 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-20 11:36:40,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:36:40,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-20 11:36:40,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2019-11-20 11:36:40,166 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand 17 states. [2019-11-20 11:36:40,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:36:40,694 INFO L93 Difference]: Finished difference Result 159 states and 197 transitions. [2019-11-20 11:36:40,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-20 11:36:40,695 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 34 [2019-11-20 11:36:40,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:36:40,696 INFO L225 Difference]: With dead ends: 159 [2019-11-20 11:36:40,697 INFO L226 Difference]: Without dead ends: 159 [2019-11-20 11:36:40,697 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2019-11-20 11:36:40,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2019-11-20 11:36:40,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 107. [2019-11-20 11:36:40,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-11-20 11:36:40,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2019-11-20 11:36:40,715 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 34 [2019-11-20 11:36:40,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:36:40,715 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2019-11-20 11:36:40,715 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-20 11:36:40,715 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2019-11-20 11:36:40,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 11:36:40,717 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:36:40,717 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:36:40,919 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:36:40,919 INFO L410 AbstractCegarLoop]: === Iteration 6 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, sll_insertErr6REQUIRES_VIOLATION, sll_insertErr0REQUIRES_VIOLATION, sll_insertErr1REQUIRES_VIOLATION, sll_insertErr7REQUIRES_VIOLATION, sll_insertErr5REQUIRES_VIOLATION, sll_insertErr9REQUIRES_VIOLATION, sll_insertErr4REQUIRES_VIOLATION, sll_insertErr2REQUIRES_VIOLATION, sll_insertErr8REQUIRES_VIOLATION, sll_insertErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2019-11-20 11:36:40,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:36:40,920 INFO L82 PathProgramCache]: Analyzing trace with hash 542305598, now seen corresponding path program 1 times [2019-11-20 11:36:40,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:36:40,920 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1409128342] [2019-11-20 11:36:40,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f356eaa7-bff4-4ea7-a729-4e7d1eb2e0a3/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:36:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:36:41,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-20 11:36:41,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:36:41,304 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:36:41,304 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:36:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 11:36:41,855 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1409128342] [2019-11-20 11:36:41,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 11:36:41,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2019-11-20 11:36:41,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074033538] [2019-11-20 11:36:41,856 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-20 11:36:41,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:36:41,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-20 11:36:41,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2019-11-20 11:36:41,857 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand 21 states. [2019-11-20 11:36:43,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:36:43,199 INFO L93 Difference]: Finished difference Result 151 states and 191 transitions. [2019-11-20 11:36:43,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-20 11:36:43,201 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 36 [2019-11-20 11:36:43,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:36:43,202 INFO L225 Difference]: With dead ends: 151 [2019-11-20 11:36:43,202 INFO L226 Difference]: Without dead ends: 148 [2019-11-20 11:36:43,203 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2019-11-20 11:36:43,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-11-20 11:36:43,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 97. [2019-11-20 11:36:43,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-11-20 11:36:43,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2019-11-20 11:36:43,215 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 36 [2019-11-20 11:36:43,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:36:43,216 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2019-11-20 11:36:43,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-20 11:36:43,216 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2019-11-20 11:36:43,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-20 11:36:43,217 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:36:43,217 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:36:43,424 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:36:43,424 INFO L410 AbstractCegarLoop]: === Iteration 7 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, sll_insertErr6REQUIRES_VIOLATION, sll_insertErr0REQUIRES_VIOLATION, sll_insertErr1REQUIRES_VIOLATION, sll_insertErr7REQUIRES_VIOLATION, sll_insertErr5REQUIRES_VIOLATION, sll_insertErr9REQUIRES_VIOLATION, sll_insertErr4REQUIRES_VIOLATION, sll_insertErr2REQUIRES_VIOLATION, sll_insertErr8REQUIRES_VIOLATION, sll_insertErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2019-11-20 11:36:43,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:36:43,425 INFO L82 PathProgramCache]: Analyzing trace with hash 746502652, now seen corresponding path program 2 times [2019-11-20 11:36:43,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:36:43,425 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2097770963] [2019-11-20 11:36:43,425 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f356eaa7-bff4-4ea7-a729-4e7d1eb2e0a3/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:36:43,609 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 11:36:43,609 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 11:36:43,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 11:36:43,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:36:43,618 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 11:36:43,619 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:36:43,620 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:36:43,621 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:36:43,621 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 11:36:43,835 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-11-20 11:36:43,940 INFO L343 Elim1Store]: treesize reduction 27, result has 57.1 percent of original size [2019-11-20 11:36:43,940 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 49 [2019-11-20 11:36:43,941 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:36:43,963 INFO L567 ElimStorePlain]: treesize reduction 17, result has 54.1 percent of original size [2019-11-20 11:36:43,964 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 11:36:43,964 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:20 [2019-11-20 11:36:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:36:44,065 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:36:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-20 11:36:54,330 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2097770963] [2019-11-20 11:36:54,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-20 11:36:54,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2019-11-20 11:36:54,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062599395] [2019-11-20 11:36:54,333 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 11:36:54,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:36:54,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 11:36:54,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-20 11:36:54,334 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand 7 states. [2019-11-20 11:37:55,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:37:55,241 INFO L93 Difference]: Finished difference Result 116 states and 128 transitions. [2019-11-20 11:37:55,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 11:37:55,244 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2019-11-20 11:37:55,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:37:55,245 INFO L225 Difference]: With dead ends: 116 [2019-11-20 11:37:55,245 INFO L226 Difference]: Without dead ends: 116 [2019-11-20 11:37:55,245 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-20 11:37:55,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-11-20 11:37:55,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 98. [2019-11-20 11:37:55,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-11-20 11:37:55,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2019-11-20 11:37:55,251 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 39 [2019-11-20 11:37:55,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:37:55,251 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2019-11-20 11:37:55,251 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 11:37:55,251 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2019-11-20 11:37:55,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-20 11:37:55,252 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:37:55,252 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:37:55,455 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:55,456 INFO L410 AbstractCegarLoop]: === Iteration 8 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, sll_insertErr6REQUIRES_VIOLATION, sll_insertErr0REQUIRES_VIOLATION, sll_insertErr1REQUIRES_VIOLATION, sll_insertErr7REQUIRES_VIOLATION, sll_insertErr5REQUIRES_VIOLATION, sll_insertErr9REQUIRES_VIOLATION, sll_insertErr4REQUIRES_VIOLATION, sll_insertErr2REQUIRES_VIOLATION, sll_insertErr8REQUIRES_VIOLATION, sll_insertErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2019-11-20 11:37:55,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:37:55,456 INFO L82 PathProgramCache]: Analyzing trace with hash 746502653, now seen corresponding path program 1 times [2019-11-20 11:37:55,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:37:55,457 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1513340887] [2019-11-20 11:37:55,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f356eaa7-bff4-4ea7-a729-4e7d1eb2e0a3/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:37:55,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-20 11:37:55,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:37:55,668 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 11:37:55,669 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:37:55,675 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:37:55,678 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 11:37:55,678 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 11:37:55,684 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:37:55,684 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:37:55,684 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-20 11:37:55,780 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 [2019-11-20 11:37:55,781 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:37:55,793 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:37:55,793 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:37:55,794 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:35 [2019-11-20 11:37:55,948 INFO L392 ElimStorePlain]: Different costs {2=[|v_old(#length)_AFTER_CALL_15|], 4=[|v_old(#valid)_AFTER_CALL_23|]} [2019-11-20 11:37:55,956 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 11:37:55,957 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 11:37:55,959 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 11:37:55,961 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2019-11-20 11:37:55,961 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:37:55,984 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:37:56,029 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:37:56,029 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 52 [2019-11-20 11:37:56,030 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 11:37:56,056 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:37:56,056 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:37:56,056 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:52, output treesize:43 [2019-11-20 11:37:56,156 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:37:56,156 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 61 treesize of output 36 [2019-11-20 11:37:56,158 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:37:56,160 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:37:56,161 INFO L496 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 11:37:56,209 INFO L567 ElimStorePlain]: treesize reduction 8, result has 81.4 percent of original size [2019-11-20 11:37:56,210 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 11:37:56,210 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:35 [2019-11-20 11:37:56,411 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:37:56,411 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:37:56,734 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 11:37:56,756 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 11:37:56,765 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 11:37:56,777 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 11:37:56,883 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2019-11-20 11:37:56,883 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:37:56,897 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 89 [2019-11-20 11:37:56,897 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:37:56,898 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:37:56,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:37:56,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:37:56,900 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 11:37:56,907 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 11:37:56,916 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2019-11-20 11:37:56,916 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-20 11:37:56,921 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 11:37:56,930 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2019-11-20 11:37:56,930 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-20 11:37:57,130 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2019-11-20 11:37:57,130 INFO L567 ElimStorePlain]: treesize reduction 56, result has 56.9 percent of original size [2019-11-20 11:37:57,131 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 6 dim-0 vars, and 3 xjuncts. [2019-11-20 11:37:57,131 INFO L221 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:146, output treesize:70 [2019-11-20 11:38:03,507 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:38:03,508 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 11:38:03,509 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:38:03,510 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:38:03,512 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:38:03,513 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 11:38:03,514 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:38:03,515 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:38:08,958 WARN L191 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2019-11-20 11:38:08,999 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 100 [2019-11-20 11:38:13,975 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 100 [2019-11-20 11:38:19,040 WARN L191 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-11-20 11:38:19,061 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 100 [2019-11-20 11:38:19,611 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 100 [2019-11-20 11:38:20,119 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 100 [2019-11-20 11:38:25,325 WARN L191 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-11-20 11:38:25,357 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 100 [2019-11-20 11:38:26,040 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:38:26,041 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Alternating quantifiers not yet supported at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-20 11:38:26,043 INFO L168 Benchmark]: Toolchain (without parser) took 112363.76 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 323.5 MB). Free memory was 939.3 MB in the beginning and 1.2 GB in the end (delta: -291.6 MB). Peak memory consumption was 355.2 MB. Max. memory is 11.5 GB. [2019-11-20 11:38:26,044 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:38:26,044 INFO L168 Benchmark]: CACSL2BoogieTranslator took 593.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -174.8 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-20 11:38:26,045 INFO L168 Benchmark]: Boogie Preprocessor took 79.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 11:38:26,045 INFO L168 Benchmark]: RCFGBuilder took 810.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 60.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. [2019-11-20 11:38:26,046 INFO L168 Benchmark]: TraceAbstraction took 110873.25 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 191.9 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -182.2 MB). Peak memory consumption was 333.0 MB. Max. memory is 11.5 GB. [2019-11-20 11:38:26,050 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 593.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -174.8 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 79.75 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 810.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 60.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 110873.25 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 191.9 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -182.2 MB). Peak memory consumption was 333.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Alternating quantifiers not yet supported: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...