./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/sll2n_insert_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b5699aa 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_9d4b7ff7-8fc2-4dcc-9859-fc76bd8fb5a7/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9d4b7ff7-8fc2-4dcc-9859-fc76bd8fb5a7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9d4b7ff7-8fc2-4dcc-9859-fc76bd8fb5a7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9d4b7ff7-8fc2-4dcc-9859-fc76bd8fb5a7/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2n_insert_unequal.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9d4b7ff7-8fc2-4dcc-9859-fc76bd8fb5a7/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9d4b7ff7-8fc2-4dcc-9859-fc76bd8fb5a7/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 e8a969aa7540449c385b0805dd526ab02ff09b47 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.24-6b5699a [2019-11-25 08:47:43,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:47:43,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:47:43,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:47:43,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:47:43,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:47:43,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:47:43,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:47:43,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:47:43,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:47:43,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:47:43,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:47:43,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:47:43,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:47:43,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:47:43,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:47:43,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:47:43,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:47:43,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:47:43,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:47:43,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:47:43,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:47:43,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:47:43,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:47:43,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:47:43,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:47:43,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:47:43,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:47:43,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:47:43,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:47:43,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:47:43,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:47:43,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:47:43,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:47:43,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:47:43,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:47:43,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:47:43,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:47:43,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:47:43,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:47:43,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:47:43,928 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9d4b7ff7-8fc2-4dcc-9859-fc76bd8fb5a7/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-25 08:47:43,940 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:47:43,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:47:43,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:47:43,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:47:43,942 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:47:43,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:47:43,942 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:47:43,942 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:47:43,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:47:43,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:47:43,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:47:43,943 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-25 08:47:43,943 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-25 08:47:43,944 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-25 08:47:43,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:47:43,944 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:47:43,944 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:47:43,944 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:47:43,945 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:47:43,945 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:47:43,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:47:43,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:47:43,946 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:47:43,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:47:43,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:47:43,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:47:43,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:47:43,947 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:47:43,947 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:47:43,947 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:47:43,947 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_9d4b7ff7-8fc2-4dcc-9859-fc76bd8fb5a7/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 -> e8a969aa7540449c385b0805dd526ab02ff09b47 [2019-11-25 08:47:44,111 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:47:44,120 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:47:44,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:47:44,124 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:47:44,124 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:47:44,125 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9d4b7ff7-8fc2-4dcc-9859-fc76bd8fb5a7/bin/uautomizer/../../sv-benchmarks/c/list-simple/sll2n_insert_unequal.i [2019-11-25 08:47:44,173 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d4b7ff7-8fc2-4dcc-9859-fc76bd8fb5a7/bin/uautomizer/data/f1be2cfbc/da8c078bfbb24ef699b0dd8fb88d321e/FLAGc985d59f8 [2019-11-25 08:47:44,637 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:47:44,638 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9d4b7ff7-8fc2-4dcc-9859-fc76bd8fb5a7/sv-benchmarks/c/list-simple/sll2n_insert_unequal.i [2019-11-25 08:47:44,653 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d4b7ff7-8fc2-4dcc-9859-fc76bd8fb5a7/bin/uautomizer/data/f1be2cfbc/da8c078bfbb24ef699b0dd8fb88d321e/FLAGc985d59f8 [2019-11-25 08:47:44,971 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9d4b7ff7-8fc2-4dcc-9859-fc76bd8fb5a7/bin/uautomizer/data/f1be2cfbc/da8c078bfbb24ef699b0dd8fb88d321e [2019-11-25 08:47:44,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:47:44,974 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-25 08:47:44,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:44,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:47:44,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:47:44,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:44" (1/1) ... [2019-11-25 08:47:44,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@306cd25e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:44, skipping insertion in model container [2019-11-25 08:47:44,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:44" (1/1) ... [2019-11-25 08:47:44,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:47:45,027 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:47:45,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:45,458 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:47:45,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:45,592 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:47:45,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:45 WrapperNode [2019-11-25 08:47:45,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:45,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:47:45,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:47:45,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:47:45,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:45" (1/1) ... [2019-11-25 08:47:45,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:45" (1/1) ... [2019-11-25 08:47:45,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:45" (1/1) ... [2019-11-25 08:47:45,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:45" (1/1) ... [2019-11-25 08:47:45,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:45" (1/1) ... [2019-11-25 08:47:45,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:45" (1/1) ... [2019-11-25 08:47:45,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:45" (1/1) ... [2019-11-25 08:47:45,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:47:45,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:47:45,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:47:45,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:47:45,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d4b7ff7-8fc2-4dcc-9859-fc76bd8fb5a7/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 [2019-11-25 08:47:45,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-25 08:47:45,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:47:45,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:47:45,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-25 08:47:45,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-25 08:47:45,731 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-25 08:47:45,732 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-25 08:47:45,732 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-11-25 08:47:45,732 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-11-25 08:47:45,732 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2019-11-25 08:47:45,732 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-25 08:47:45,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-25 08:47:45,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-25 08:47:45,733 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-25 08:47:45,733 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-25 08:47:45,733 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-25 08:47:45,734 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-25 08:47:45,734 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-25 08:47:45,734 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-25 08:47:45,734 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-25 08:47:45,735 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-25 08:47:45,735 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-25 08:47:45,735 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-25 08:47:45,735 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-25 08:47:45,735 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-25 08:47:45,736 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-25 08:47:45,736 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-25 08:47:45,736 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-25 08:47:45,736 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-25 08:47:45,736 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-25 08:47:45,737 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-25 08:47:45,737 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-25 08:47:45,737 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-25 08:47:45,737 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-25 08:47:45,737 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-25 08:47:45,738 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-25 08:47:45,738 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-25 08:47:45,738 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-25 08:47:45,738 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-25 08:47:45,738 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-25 08:47:45,738 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-25 08:47:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-25 08:47:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-25 08:47:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-25 08:47:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-25 08:47:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-25 08:47:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-25 08:47:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-25 08:47:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-25 08:47:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-25 08:47:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-25 08:47:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-25 08:47:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-25 08:47:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-25 08:47:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-25 08:47:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-25 08:47:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-25 08:47:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-25 08:47:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-25 08:47:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-25 08:47:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-25 08:47:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-25 08:47:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-25 08:47:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-25 08:47:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-25 08:47:45,743 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-25 08:47:45,743 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-25 08:47:45,743 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-25 08:47:45,743 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-25 08:47:45,743 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-25 08:47:45,743 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-25 08:47:45,744 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-25 08:47:45,744 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-25 08:47:45,744 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-25 08:47:45,744 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-25 08:47:45,744 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-25 08:47:45,744 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-25 08:47:45,745 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-25 08:47:45,745 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-25 08:47:45,745 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-25 08:47:45,745 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-25 08:47:45,745 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-25 08:47:45,745 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-25 08:47:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-25 08:47:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-25 08:47:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-25 08:47:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-25 08:47:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-25 08:47:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-25 08:47:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-25 08:47:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-25 08:47:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-25 08:47:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-25 08:47:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-25 08:47:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-25 08:47:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-25 08:47:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-25 08:47:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-25 08:47:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-25 08:47:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-25 08:47:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-25 08:47:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-25 08:47:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-25 08:47:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-25 08:47:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-25 08:47:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-25 08:47:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-25 08:47:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-25 08:47:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-25 08:47:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-25 08:47:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-25 08:47:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-25 08:47:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-25 08:47:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-25 08:47:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-25 08:47:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-25 08:47:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-25 08:47:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-25 08:47:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-25 08:47:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-25 08:47:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-25 08:47:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-25 08:47:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-25 08:47:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-11-25 08:47:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-11-25 08:47:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-25 08:47:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:47:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2019-11-25 08:47:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-25 08:47:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:47:45,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-25 08:47:45,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:47:45,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-25 08:47:45,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:47:45,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:47:46,058 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-25 08:47:46,610 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:47:46,611 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-25 08:47:46,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:46 BoogieIcfgContainer [2019-11-25 08:47:46,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:47:46,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:47:46,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:47:46,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:47:46,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:47:44" (1/3) ... [2019-11-25 08:47:46,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a4cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:47:46, skipping insertion in model container [2019-11-25 08:47:46,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:45" (2/3) ... [2019-11-25 08:47:46,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a4cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:47:46, skipping insertion in model container [2019-11-25 08:47:46,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:46" (3/3) ... [2019-11-25 08:47:46,620 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_insert_unequal.i [2019-11-25 08:47:46,630 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:47:46,637 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2019-11-25 08:47:46,647 INFO L249 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2019-11-25 08:47:46,667 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:47:46,667 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-25 08:47:46,668 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:47:46,668 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:47:46,668 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:47:46,668 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:47:46,668 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:47:46,668 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:47:46,692 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states. [2019-11-25 08:47:46,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-25 08:47:46,702 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:46,703 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:46,704 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, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-25 08:47:46,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:46,709 INFO L82 PathProgramCache]: Analyzing trace with hash 819638820, now seen corresponding path program 1 times [2019-11-25 08:47:46,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:47:46,720 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [840413186] [2019-11-25 08:47:46,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d4b7ff7-8fc2-4dcc-9859-fc76bd8fb5a7/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 [2019-11-25 08:47:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:46,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:47:46,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:47,025 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 [2019-11-25 08:47:47,026 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:47,035 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:47,036 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:47:47,036 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-25 08:47:47,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:47,049 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:47:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:47,062 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [840413186] [2019-11-25 08:47:47,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:47,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:47:47,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280458283] [2019-11-25 08:47:47,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:47:47,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:47:47,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:47:47,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:47:47,082 INFO L87 Difference]: Start difference. First operand 115 states. Second operand 3 states. [2019-11-25 08:47:47,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:47,297 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2019-11-25 08:47:47,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:47:47,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-25 08:47:47,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:47,311 INFO L225 Difference]: With dead ends: 113 [2019-11-25 08:47:47,311 INFO L226 Difference]: Without dead ends: 106 [2019-11-25 08:47:47,313 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:47:47,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-11-25 08:47:47,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2019-11-25 08:47:47,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-11-25 08:47:47,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 112 transitions. [2019-11-25 08:47:47,385 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 112 transitions. Word has length 13 [2019-11-25 08:47:47,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:47,386 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 112 transitions. [2019-11-25 08:47:47,386 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:47:47,386 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 112 transitions. [2019-11-25 08:47:47,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-25 08:47:47,387 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:47,387 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:47,598 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:47:47,599 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, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-25 08:47:47,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:47,599 INFO L82 PathProgramCache]: Analyzing trace with hash 819638821, now seen corresponding path program 1 times [2019-11-25 08:47:47,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:47:47,600 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [281074594] [2019-11-25 08:47:47,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d4b7ff7-8fc2-4dcc-9859-fc76bd8fb5a7/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 [2019-11-25 08:47:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:47,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:47:47,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:47,836 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 [2019-11-25 08:47:47,836 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:47,843 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:47,843 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:47:47,843 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-25 08:47:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:47,854 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:47:47,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:47,908 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [281074594] [2019-11-25 08:47:47,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:47,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-25 08:47:47,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516253348] [2019-11-25 08:47:47,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:47:47,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:47:47,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:47:47,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:47:47,911 INFO L87 Difference]: Start difference. First operand 106 states and 112 transitions. Second operand 4 states. [2019-11-25 08:47:48,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:48,302 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2019-11-25 08:47:48,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:47:48,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-25 08:47:48,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:48,305 INFO L225 Difference]: With dead ends: 104 [2019-11-25 08:47:48,306 INFO L226 Difference]: Without dead ends: 104 [2019-11-25 08:47:48,306 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:47:48,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-11-25 08:47:48,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2019-11-25 08:47:48,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-11-25 08:47:48,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 110 transitions. [2019-11-25 08:47:48,318 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 110 transitions. Word has length 13 [2019-11-25 08:47:48,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:48,318 INFO L462 AbstractCegarLoop]: Abstraction has 104 states and 110 transitions. [2019-11-25 08:47:48,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:47:48,318 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 110 transitions. [2019-11-25 08:47:48,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-25 08:47:48,319 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:48,320 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:48,522 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:47:48,523 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, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-25 08:47:48,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:48,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1915067255, now seen corresponding path program 1 times [2019-11-25 08:47:48,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:47:48,524 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [932831660] [2019-11-25 08:47:48,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d4b7ff7-8fc2-4dcc-9859-fc76bd8fb5a7/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 [2019-11-25 08:47:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:48,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:47:48,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:48,755 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 [2019-11-25 08:47:48,756 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:48,758 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:48,758 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:47:48,759 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-25 08:47:48,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:48,787 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:47:48,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:48,861 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [932831660] [2019-11-25 08:47:48,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:48,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-25 08:47:48,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064456773] [2019-11-25 08:47:48,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:47:48,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:47:48,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:47:48,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:47:48,862 INFO L87 Difference]: Start difference. First operand 104 states and 110 transitions. Second operand 6 states. [2019-11-25 08:47:49,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:49,198 INFO L93 Difference]: Finished difference Result 108 states and 116 transitions. [2019-11-25 08:47:49,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:47:49,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2019-11-25 08:47:49,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:49,201 INFO L225 Difference]: With dead ends: 108 [2019-11-25 08:47:49,201 INFO L226 Difference]: Without dead ends: 108 [2019-11-25 08:47:49,202 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:47:49,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2019-11-25 08:47:49,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 103. [2019-11-25 08:47:49,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-11-25 08:47:49,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2019-11-25 08:47:49,214 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 19 [2019-11-25 08:47:49,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:49,214 INFO L462 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2019-11-25 08:47:49,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:47:49,215 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2019-11-25 08:47:49,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-25 08:47:49,215 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:49,216 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:49,416 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:47:49,416 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, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-25 08:47:49,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:49,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1915067254, now seen corresponding path program 1 times [2019-11-25 08:47:49,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:47:49,417 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [240758314] [2019-11-25 08:47:49,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d4b7ff7-8fc2-4dcc-9859-fc76bd8fb5a7/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 [2019-11-25 08:47:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:49,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-25 08:47:49,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:49,639 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 [2019-11-25 08:47:49,639 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:49,645 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:49,646 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:47:49,646 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-25 08:47:49,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:49,705 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:47:50,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:50,067 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [240758314] [2019-11-25 08:47:50,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:50,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-25 08:47:50,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337088941] [2019-11-25 08:47:50,068 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-25 08:47:50,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:47:50,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-25 08:47:50,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:47:50,068 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand 10 states. [2019-11-25 08:47:50,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:50,918 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2019-11-25 08:47:50,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:47:50,919 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-11-25 08:47:50,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:50,920 INFO L225 Difference]: With dead ends: 107 [2019-11-25 08:47:50,921 INFO L226 Difference]: Without dead ends: 107 [2019-11-25 08:47:50,921 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:47:50,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-11-25 08:47:50,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 102. [2019-11-25 08:47:50,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-11-25 08:47:50,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 108 transitions. [2019-11-25 08:47:50,928 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 108 transitions. Word has length 19 [2019-11-25 08:47:50,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:50,929 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 108 transitions. [2019-11-25 08:47:50,929 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-25 08:47:50,929 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 108 transitions. [2019-11-25 08:47:50,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-25 08:47:50,930 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:50,930 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:51,133 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:47:51,133 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, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-25 08:47:51,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:51,133 INFO L82 PathProgramCache]: Analyzing trace with hash -545359304, now seen corresponding path program 1 times [2019-11-25 08:47:51,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:47:51,134 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2122856320] [2019-11-25 08:47:51,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d4b7ff7-8fc2-4dcc-9859-fc76bd8fb5a7/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 [2019-11-25 08:47:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:51,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:47:51,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:51,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:51,374 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:47:51,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:51,437 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2122856320] [2019-11-25 08:47:51,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:51,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-11-25 08:47:51,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681349210] [2019-11-25 08:47:51,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:47:51,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:47:51,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:47:51,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:47:51,438 INFO L87 Difference]: Start difference. First operand 102 states and 108 transitions. Second operand 7 states. [2019-11-25 08:47:51,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:51,519 INFO L93 Difference]: Finished difference Result 111 states and 118 transitions. [2019-11-25 08:47:51,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:47:51,520 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2019-11-25 08:47:51,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:51,521 INFO L225 Difference]: With dead ends: 111 [2019-11-25 08:47:51,521 INFO L226 Difference]: Without dead ends: 108 [2019-11-25 08:47:51,521 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:47:51,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2019-11-25 08:47:51,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 103. [2019-11-25 08:47:51,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-11-25 08:47:51,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2019-11-25 08:47:51,543 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 25 [2019-11-25 08:47:51,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:51,543 INFO L462 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2019-11-25 08:47:51,544 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:47:51,544 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2019-11-25 08:47:51,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-25 08:47:51,545 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:51,546 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, 1, 1] [2019-11-25 08:47:51,748 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:47:51,748 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, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-25 08:47:51,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:51,749 INFO L82 PathProgramCache]: Analyzing trace with hash -782481093, now seen corresponding path program 1 times [2019-11-25 08:47:51,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:47:51,753 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1927399197] [2019-11-25 08:47:51,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d4b7ff7-8fc2-4dcc-9859-fc76bd8fb5a7/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 [2019-11-25 08:47:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:51,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:47:51,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:51,994 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:47:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-25 08:47:52,148 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1927399197] [2019-11-25 08:47:52,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:52,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-11-25 08:47:52,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502629287] [2019-11-25 08:47:52,149 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-25 08:47:52,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:47:52,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:47:52,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:47:52,150 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand 9 states. [2019-11-25 08:47:52,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:52,283 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2019-11-25 08:47:52,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:47:52,283 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2019-11-25 08:47:52,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:52,285 INFO L225 Difference]: With dead ends: 117 [2019-11-25 08:47:52,285 INFO L226 Difference]: Without dead ends: 114 [2019-11-25 08:47:52,285 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:47:52,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-11-25 08:47:52,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2019-11-25 08:47:52,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-11-25 08:47:52,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 116 transitions. [2019-11-25 08:47:52,293 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 116 transitions. Word has length 38 [2019-11-25 08:47:52,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:52,294 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 116 transitions. [2019-11-25 08:47:52,294 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-25 08:47:52,294 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 116 transitions. [2019-11-25 08:47:52,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-25 08:47:52,295 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:52,296 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-25 08:47:52,498 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:47:52,499 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, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-25 08:47:52,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:52,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1975503080, now seen corresponding path program 2 times [2019-11-25 08:47:52,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:47:52,500 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [409694697] [2019-11-25 08:47:52,500 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d4b7ff7-8fc2-4dcc-9859-fc76bd8fb5a7/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 [2019-11-25 08:47:52,760 ERROR L271 FreeRefinementEngine]: Caught known exception: Array theory solver does not yet support write-chains connecting two different constant arrays [2019-11-25 08:47:52,761 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [469493542] [2019-11-25 08:47:52,762 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d4b7ff7-8fc2-4dcc-9859-fc76bd8fb5a7/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:52,961 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:47:52,961 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:47:52,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-25 08:47:52,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:52,974 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 [2019-11-25 08:47:52,975 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:52,976 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:52,976 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:47:52,976 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-25 08:47:53,248 INFO L343 Elim1Store]: treesize reduction 27, result has 57.1 percent of original size [2019-11-25 08:47:53,248 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 [2019-11-25 08:47:53,249 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:53,280 INFO L567 ElimStorePlain]: treesize reduction 17, result has 54.1 percent of original size [2019-11-25 08:47:53,281 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. [2019-11-25 08:47:53,281 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:20 [2019-11-25 08:47:53,497 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:53,498 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 52 [2019-11-25 08:47:53,499 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:53,541 INFO L567 ElimStorePlain]: treesize reduction 28, result has 41.7 percent of original size [2019-11-25 08:47:53,542 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. [2019-11-25 08:47:53,542 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:20 [2019-11-25 08:47:53,605 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-25 08:47:53,609 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:48:14,852 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:14,853 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-25 08:48:14,856 INFO L168 Benchmark]: Toolchain (without parser) took 29881.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 211.8 MB). Free memory was 944.8 MB in the beginning and 828.4 MB in the end (delta: 116.4 MB). Peak memory consumption was 328.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:14,857 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:14,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 617.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -161.8 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:14,858 INFO L168 Benchmark]: Boogie Preprocessor took 82.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:14,858 INFO L168 Benchmark]: RCFGBuilder took 936.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 77.0 MB). Peak memory consumption was 77.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:14,859 INFO L168 Benchmark]: TraceAbstraction took 28242.28 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 76.0 MB). Free memory was 1.0 GB in the beginning and 828.4 MB in the end (delta: 201.2 MB). Peak memory consumption was 277.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:14,861 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 617.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -161.8 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 82.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 936.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 77.0 MB). Peak memory consumption was 77.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 28242.28 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 76.0 MB). Free memory was 1.0 GB in the beginning and 828.4 MB in the end (delta: 201.2 MB). Peak memory consumption was 277.2 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...