./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/sll2c_append_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 678e0110 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6c7e8100-8354-4d2a-b65b-06f67d292c6d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6c7e8100-8354-4d2a-b65b-06f67d292c6d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6c7e8100-8354-4d2a-b65b-06f67d292c6d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6c7e8100-8354-4d2a-b65b-06f67d292c6d/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2c_append_unequal.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6c7e8100-8354-4d2a-b65b-06f67d292c6d/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6c7e8100-8354-4d2a-b65b-06f67d292c6d/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 1eb62d582bb1f498de7f5f7de60817c0efb48782 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-19 22:26:51,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:26:51,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:26:51,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:26:51,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:26:51,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:26:51,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:26:51,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:26:51,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:26:51,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:26:51,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:26:51,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:26:51,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:26:51,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:26:51,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:26:51,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:26:51,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:26:51,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:26:51,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:26:51,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:26:52,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:26:52,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:26:52,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:26:52,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:26:52,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:26:52,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:26:52,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:26:52,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:26:52,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:26:52,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:26:52,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:26:52,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:26:52,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:26:52,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:26:52,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:26:52,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:26:52,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:26:52,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:26:52,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:26:52,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:26:52,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:26:52,037 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6c7e8100-8354-4d2a-b65b-06f67d292c6d/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-19 22:26:52,053 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:26:52,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:26:52,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:26:52,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:26:52,055 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:26:52,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:26:52,055 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 22:26:52,055 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 22:26:52,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:26:52,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 22:26:52,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:26:52,056 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-19 22:26:52,056 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-19 22:26:52,057 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-19 22:26:52,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 22:26:52,057 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-19 22:26:52,057 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-19 22:26:52,057 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 22:26:52,057 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:26:52,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:26:52,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:26:52,058 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 22:26:52,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 22:26:52,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:26:52,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:26:52,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 22:26:52,059 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-19 22:26:52,059 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-19 22:26:52,060 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-19 22:26:52,060 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_6c7e8100-8354-4d2a-b65b-06f67d292c6d/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 -> 1eb62d582bb1f498de7f5f7de60817c0efb48782 [2019-11-19 22:26:52,245 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:26:52,263 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:26:52,271 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:26:52,274 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:26:52,274 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:26:52,276 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6c7e8100-8354-4d2a-b65b-06f67d292c6d/bin/uautomizer/../../sv-benchmarks/c/list-simple/sll2c_append_unequal.i [2019-11-19 22:26:52,353 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6c7e8100-8354-4d2a-b65b-06f67d292c6d/bin/uautomizer/data/5e0c6dd73/4875a5c2adcb4cf7a21cb579beeb8e23/FLAG0b43ba47d [2019-11-19 22:26:52,911 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:26:52,911 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6c7e8100-8354-4d2a-b65b-06f67d292c6d/sv-benchmarks/c/list-simple/sll2c_append_unequal.i [2019-11-19 22:26:52,929 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6c7e8100-8354-4d2a-b65b-06f67d292c6d/bin/uautomizer/data/5e0c6dd73/4875a5c2adcb4cf7a21cb579beeb8e23/FLAG0b43ba47d [2019-11-19 22:26:53,188 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6c7e8100-8354-4d2a-b65b-06f67d292c6d/bin/uautomizer/data/5e0c6dd73/4875a5c2adcb4cf7a21cb579beeb8e23 [2019-11-19 22:26:53,191 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:26:53,192 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-19 22:26:53,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:26:53,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:26:53,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:26:53,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:26:53" (1/1) ... [2019-11-19 22:26:53,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e81ecb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:26:53, skipping insertion in model container [2019-11-19 22:26:53,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:26:53" (1/1) ... [2019-11-19 22:26:53,209 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:26:53,263 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:26:53,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:26:53,706 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:26:53,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:26:53,813 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:26:53,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:26:53 WrapperNode [2019-11-19 22:26:53,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:26:53,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:26:53,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:26:53,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:26:53,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:26:53" (1/1) ... [2019-11-19 22:26:53,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:26:53" (1/1) ... [2019-11-19 22:26:53,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:26:53" (1/1) ... [2019-11-19 22:26:53,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:26:53" (1/1) ... [2019-11-19 22:26:53,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:26:53" (1/1) ... [2019-11-19 22:26:53,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:26:53" (1/1) ... [2019-11-19 22:26:53,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:26:53" (1/1) ... [2019-11-19 22:26:53,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:26:53,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:26:53,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:26:53,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:26:53,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:26:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c7e8100-8354-4d2a-b65b-06f67d292c6d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:26:53,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-19 22:26:53,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:26:53,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-19 22:26:53,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-19 22:26:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-19 22:26:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-19 22:26:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-11-19 22:26:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2019-11-19 22:26:53,975 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_append [2019-11-19 22:26:53,975 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-19 22:26:53,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-19 22:26:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-19 22:26:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-19 22:26:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-19 22:26:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-19 22:26:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-19 22:26:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-19 22:26:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-19 22:26:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-19 22:26:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-19 22:26:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-19 22:26:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-19 22:26:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-19 22:26:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-19 22:26:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-19 22:26:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-19 22:26:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-19 22:26:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-19 22:26:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-19 22:26:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-19 22:26:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-19 22:26:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-19 22:26:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-19 22:26:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-19 22:26:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-19 22:26:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-19 22:26:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-19 22:26:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-19 22:26:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-19 22:26:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-19 22:26:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-19 22:26:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-19 22:26:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-19 22:26:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-19 22:26:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-19 22:26:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-19 22:26:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-19 22:26:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-19 22:26:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-19 22:26:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-19 22:26:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-19 22:26:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-19 22:26:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-19 22:26:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-19 22:26:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-19 22:26:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-19 22:26:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-19 22:26:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-19 22:26:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-19 22:26:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-19 22:26:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-19 22:26:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-19 22:26:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-19 22:26:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-19 22:26:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-19 22:26:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-19 22:26:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-19 22:26:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-19 22:26:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-19 22:26:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-19 22:26:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-19 22:26:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-19 22:26:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-19 22:26:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-19 22:26:53,989 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-19 22:26:53,989 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-19 22:26:53,989 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-19 22:26:53,989 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-19 22:26:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-19 22:26:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-19 22:26:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-19 22:26:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-19 22:26:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-19 22:26:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-19 22:26:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-19 22:26:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-19 22:26:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-19 22:26:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-19 22:26:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-19 22:26:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-19 22:26:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-19 22:26:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-19 22:26:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-19 22:26:53,993 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-19 22:26:53,993 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-19 22:26:53,993 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-19 22:26:53,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-19 22:26:53,993 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-19 22:26:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-19 22:26:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-19 22:26:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-19 22:26:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-19 22:26:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-19 22:26:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-19 22:26:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-19 22:26:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-19 22:26:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-19 22:26:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-19 22:26:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-19 22:26:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-19 22:26:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-19 22:26:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-19 22:26:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-19 22:26:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-19 22:26:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-19 22:26:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-19 22:26:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-19 22:26:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-19 22:26:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-19 22:26:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-19 22:26:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-19 22:26:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-11-19 22:26:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2019-11-19 22:26:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-19 22:26:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 22:26:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_append [2019-11-19 22:26:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-19 22:26:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 22:26:54,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-19 22:26:54,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-19 22:26:54,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-19 22:26:54,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:26:54,551 INFO L689 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-19 22:26:55,368 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:26:55,368 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-19 22:26:55,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:26:55 BoogieIcfgContainer [2019-11-19 22:26:55,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:26:55,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 22:26:55,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 22:26:55,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 22:26:55,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:26:53" (1/3) ... [2019-11-19 22:26:55,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5524ab07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:26:55, skipping insertion in model container [2019-11-19 22:26:55,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:26:53" (2/3) ... [2019-11-19 22:26:55,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5524ab07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:26:55, skipping insertion in model container [2019-11-19 22:26:55,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:26:55" (3/3) ... [2019-11-19 22:26:55,377 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_append_unequal.i [2019-11-19 22:26:55,388 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 22:26:55,396 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 57 error locations. [2019-11-19 22:26:55,408 INFO L249 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2019-11-19 22:26:55,432 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 22:26:55,432 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-19 22:26:55,432 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 22:26:55,433 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:26:55,433 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:26:55,433 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 22:26:55,433 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:26:55,433 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 22:26:55,459 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2019-11-19 22:26:55,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-19 22:26:55,477 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:26:55,478 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:26:55,479 INFO L410 AbstractCegarLoop]: === Iteration 1 === [sll_circular_appendErr19REQUIRES_VIOLATION, sll_circular_appendErr8REQUIRES_VIOLATION, sll_circular_appendErr18REQUIRES_VIOLATION, sll_circular_appendErr9REQUIRES_VIOLATION, sll_circular_appendErr0REQUIRES_VIOLATION, sll_circular_appendErr11REQUIRES_VIOLATION, sll_circular_appendErr10REQUIRES_VIOLATION, sll_circular_appendErr12REQUIRES_VIOLATION, sll_circular_appendErr1REQUIRES_VIOLATION, sll_circular_appendErr3REQUIRES_VIOLATION, sll_circular_appendErr13REQUIRES_VIOLATION, sll_circular_appendErr2REQUIRES_VIOLATION, sll_circular_appendErr15REQUIRES_VIOLATION, sll_circular_appendErr4REQUIRES_VIOLATION, sll_circular_appendErr14REQUIRES_VIOLATION, sll_circular_appendErr16REQUIRES_VIOLATION, sll_circular_appendErr5REQUIRES_VIOLATION, sll_circular_appendErr7REQUIRES_VIOLATION, sll_circular_appendErr17REQUIRES_VIOLATION, sll_circular_appendErr6REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr18ENSURES_VIOLATIONMEMORY_LEAK, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-19 22:26:55,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:26:55,486 INFO L82 PathProgramCache]: Analyzing trace with hash -651171882, now seen corresponding path program 1 times [2019-11-19 22:26:55,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:26:55,500 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1652542156] [2019-11-19 22:26:55,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c7e8100-8354-4d2a-b65b-06f67d292c6d/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:26:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:26:55,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-19 22:26:55,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:26:55,835 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-19 22:26:55,836 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:26:55,845 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:26:55,845 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:26:55,845 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-19 22:26:55,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:26:55,856 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:26:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:26:55,870 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1652542156] [2019-11-19 22:26:55,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:26:55,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-19 22:26:55,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052085638] [2019-11-19 22:26:55,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 22:26:55,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:26:55,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:26:55,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:26:55,896 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 3 states. [2019-11-19 22:26:56,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:26:56,247 INFO L93 Difference]: Finished difference Result 146 states and 157 transitions. [2019-11-19 22:26:56,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:26:56,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-11-19 22:26:56,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:26:56,266 INFO L225 Difference]: With dead ends: 146 [2019-11-19 22:26:56,266 INFO L226 Difference]: Without dead ends: 139 [2019-11-19 22:26:56,268 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:26:56,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-11-19 22:26:56,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2019-11-19 22:26:56,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-11-19 22:26:56,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 147 transitions. [2019-11-19 22:26:56,359 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 147 transitions. Word has length 12 [2019-11-19 22:26:56,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:26:56,360 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 147 transitions. [2019-11-19 22:26:56,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 22:26:56,361 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 147 transitions. [2019-11-19 22:26:56,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-19 22:26:56,361 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:26:56,361 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:26:56,566 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:26:56,569 INFO L410 AbstractCegarLoop]: === Iteration 2 === [sll_circular_appendErr19REQUIRES_VIOLATION, sll_circular_appendErr8REQUIRES_VIOLATION, sll_circular_appendErr18REQUIRES_VIOLATION, sll_circular_appendErr9REQUIRES_VIOLATION, sll_circular_appendErr0REQUIRES_VIOLATION, sll_circular_appendErr11REQUIRES_VIOLATION, sll_circular_appendErr10REQUIRES_VIOLATION, sll_circular_appendErr12REQUIRES_VIOLATION, sll_circular_appendErr1REQUIRES_VIOLATION, sll_circular_appendErr3REQUIRES_VIOLATION, sll_circular_appendErr13REQUIRES_VIOLATION, sll_circular_appendErr2REQUIRES_VIOLATION, sll_circular_appendErr15REQUIRES_VIOLATION, sll_circular_appendErr4REQUIRES_VIOLATION, sll_circular_appendErr14REQUIRES_VIOLATION, sll_circular_appendErr16REQUIRES_VIOLATION, sll_circular_appendErr5REQUIRES_VIOLATION, sll_circular_appendErr7REQUIRES_VIOLATION, sll_circular_appendErr17REQUIRES_VIOLATION, sll_circular_appendErr6REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr18ENSURES_VIOLATIONMEMORY_LEAK, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-19 22:26:56,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:26:56,569 INFO L82 PathProgramCache]: Analyzing trace with hash -651171881, now seen corresponding path program 1 times [2019-11-19 22:26:56,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:26:56,573 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [504480762] [2019-11-19 22:26:56,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c7e8100-8354-4d2a-b65b-06f67d292c6d/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:26:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:26:56,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 22:26:56,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:26:56,843 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-19 22:26:56,843 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:26:56,851 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:26:56,851 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:26:56,852 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-19 22:26:56,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:26:56,871 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:26:56,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:26:56,922 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [504480762] [2019-11-19 22:26:56,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:26:56,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-19 22:26:56,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934796697] [2019-11-19 22:26:56,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 22:26:56,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:26:56,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 22:26:56,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:26:56,926 INFO L87 Difference]: Start difference. First operand 139 states and 147 transitions. Second operand 4 states. [2019-11-19 22:26:57,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:26:57,381 INFO L93 Difference]: Finished difference Result 137 states and 145 transitions. [2019-11-19 22:26:57,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:26:57,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-19 22:26:57,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:26:57,385 INFO L225 Difference]: With dead ends: 137 [2019-11-19 22:26:57,385 INFO L226 Difference]: Without dead ends: 137 [2019-11-19 22:26:57,386 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:26:57,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2019-11-19 22:26:57,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2019-11-19 22:26:57,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-11-19 22:26:57,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 145 transitions. [2019-11-19 22:26:57,399 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 145 transitions. Word has length 12 [2019-11-19 22:26:57,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:26:57,400 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 145 transitions. [2019-11-19 22:26:57,400 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 22:26:57,400 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 145 transitions. [2019-11-19 22:26:57,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-19 22:26:57,401 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:26:57,401 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:26:57,604 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:26:57,605 INFO L410 AbstractCegarLoop]: === Iteration 3 === [sll_circular_appendErr19REQUIRES_VIOLATION, sll_circular_appendErr8REQUIRES_VIOLATION, sll_circular_appendErr18REQUIRES_VIOLATION, sll_circular_appendErr9REQUIRES_VIOLATION, sll_circular_appendErr0REQUIRES_VIOLATION, sll_circular_appendErr11REQUIRES_VIOLATION, sll_circular_appendErr10REQUIRES_VIOLATION, sll_circular_appendErr12REQUIRES_VIOLATION, sll_circular_appendErr1REQUIRES_VIOLATION, sll_circular_appendErr3REQUIRES_VIOLATION, sll_circular_appendErr13REQUIRES_VIOLATION, sll_circular_appendErr2REQUIRES_VIOLATION, sll_circular_appendErr15REQUIRES_VIOLATION, sll_circular_appendErr4REQUIRES_VIOLATION, sll_circular_appendErr14REQUIRES_VIOLATION, sll_circular_appendErr16REQUIRES_VIOLATION, sll_circular_appendErr5REQUIRES_VIOLATION, sll_circular_appendErr7REQUIRES_VIOLATION, sll_circular_appendErr17REQUIRES_VIOLATION, sll_circular_appendErr6REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr18ENSURES_VIOLATIONMEMORY_LEAK, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-19 22:26:57,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:26:57,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1082872635, now seen corresponding path program 1 times [2019-11-19 22:26:57,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:26:57,606 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1597468579] [2019-11-19 22:26:57,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c7e8100-8354-4d2a-b65b-06f67d292c6d/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:26:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:26:57,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:26:57,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:26:57,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:26:57,873 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:26:57,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:26:57,930 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1597468579] [2019-11-19 22:26:57,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:26:57,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-19 22:26:57,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139226453] [2019-11-19 22:26:57,931 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-19 22:26:57,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:26:57,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-19 22:26:57,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-19 22:26:57,933 INFO L87 Difference]: Start difference. First operand 137 states and 145 transitions. Second operand 8 states. [2019-11-19 22:26:58,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:26:58,052 INFO L93 Difference]: Finished difference Result 144 states and 153 transitions. [2019-11-19 22:26:58,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 22:26:58,053 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-11-19 22:26:58,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:26:58,055 INFO L225 Difference]: With dead ends: 144 [2019-11-19 22:26:58,055 INFO L226 Difference]: Without dead ends: 144 [2019-11-19 22:26:58,056 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-11-19 22:26:58,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-11-19 22:26:58,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 138. [2019-11-19 22:26:58,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-11-19 22:26:58,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 146 transitions. [2019-11-19 22:26:58,073 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 146 transitions. Word has length 19 [2019-11-19 22:26:58,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:26:58,074 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 146 transitions. [2019-11-19 22:26:58,074 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-19 22:26:58,074 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 146 transitions. [2019-11-19 22:26:58,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-19 22:26:58,075 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:26:58,075 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:26:58,279 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:26:58,280 INFO L410 AbstractCegarLoop]: === Iteration 4 === [sll_circular_appendErr19REQUIRES_VIOLATION, sll_circular_appendErr8REQUIRES_VIOLATION, sll_circular_appendErr18REQUIRES_VIOLATION, sll_circular_appendErr9REQUIRES_VIOLATION, sll_circular_appendErr0REQUIRES_VIOLATION, sll_circular_appendErr11REQUIRES_VIOLATION, sll_circular_appendErr10REQUIRES_VIOLATION, sll_circular_appendErr12REQUIRES_VIOLATION, sll_circular_appendErr1REQUIRES_VIOLATION, sll_circular_appendErr3REQUIRES_VIOLATION, sll_circular_appendErr13REQUIRES_VIOLATION, sll_circular_appendErr2REQUIRES_VIOLATION, sll_circular_appendErr15REQUIRES_VIOLATION, sll_circular_appendErr4REQUIRES_VIOLATION, sll_circular_appendErr14REQUIRES_VIOLATION, sll_circular_appendErr16REQUIRES_VIOLATION, sll_circular_appendErr5REQUIRES_VIOLATION, sll_circular_appendErr7REQUIRES_VIOLATION, sll_circular_appendErr17REQUIRES_VIOLATION, sll_circular_appendErr6REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr18ENSURES_VIOLATIONMEMORY_LEAK, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-19 22:26:58,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:26:58,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1870248748, now seen corresponding path program 1 times [2019-11-19 22:26:58,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:26:58,281 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [468457473] [2019-11-19 22:26:58,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c7e8100-8354-4d2a-b65b-06f67d292c6d/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:26:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:26:58,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 22:26:58,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:26:58,557 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-19 22:26:58,558 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:26:58,560 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:26:58,561 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:26:58,561 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-19 22:26:58,592 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 22:26:58,593 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:26:58,666 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 22:26:58,666 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [468457473] [2019-11-19 22:26:58,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:26:58,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-19 22:26:58,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012873555] [2019-11-19 22:26:58,667 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 22:26:58,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:26:58,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 22:26:58,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-19 22:26:58,668 INFO L87 Difference]: Start difference. First operand 138 states and 146 transitions. Second operand 6 states. [2019-11-19 22:26:59,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:26:59,310 INFO L93 Difference]: Finished difference Result 138 states and 147 transitions. [2019-11-19 22:26:59,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 22:26:59,311 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2019-11-19 22:26:59,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:26:59,314 INFO L225 Difference]: With dead ends: 138 [2019-11-19 22:26:59,314 INFO L226 Difference]: Without dead ends: 138 [2019-11-19 22:26:59,315 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-19 22:26:59,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2019-11-19 22:26:59,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2019-11-19 22:26:59,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-11-19 22:26:59,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 145 transitions. [2019-11-19 22:26:59,351 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 145 transitions. Word has length 28 [2019-11-19 22:26:59,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:26:59,351 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 145 transitions. [2019-11-19 22:26:59,351 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 22:26:59,351 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 145 transitions. [2019-11-19 22:26:59,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-19 22:26:59,352 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:26:59,353 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:26:59,558 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:26:59,559 INFO L410 AbstractCegarLoop]: === Iteration 5 === [sll_circular_appendErr19REQUIRES_VIOLATION, sll_circular_appendErr8REQUIRES_VIOLATION, sll_circular_appendErr18REQUIRES_VIOLATION, sll_circular_appendErr9REQUIRES_VIOLATION, sll_circular_appendErr0REQUIRES_VIOLATION, sll_circular_appendErr11REQUIRES_VIOLATION, sll_circular_appendErr10REQUIRES_VIOLATION, sll_circular_appendErr12REQUIRES_VIOLATION, sll_circular_appendErr1REQUIRES_VIOLATION, sll_circular_appendErr3REQUIRES_VIOLATION, sll_circular_appendErr13REQUIRES_VIOLATION, sll_circular_appendErr2REQUIRES_VIOLATION, sll_circular_appendErr15REQUIRES_VIOLATION, sll_circular_appendErr4REQUIRES_VIOLATION, sll_circular_appendErr14REQUIRES_VIOLATION, sll_circular_appendErr16REQUIRES_VIOLATION, sll_circular_appendErr5REQUIRES_VIOLATION, sll_circular_appendErr7REQUIRES_VIOLATION, sll_circular_appendErr17REQUIRES_VIOLATION, sll_circular_appendErr6REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr18ENSURES_VIOLATIONMEMORY_LEAK, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-19 22:26:59,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:26:59,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1870248747, now seen corresponding path program 1 times [2019-11-19 22:26:59,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:26:59,560 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1045029923] [2019-11-19 22:26:59,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c7e8100-8354-4d2a-b65b-06f67d292c6d/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:26:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:26:59,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-19 22:26:59,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:26:59,845 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-19 22:26:59,846 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:26:59,852 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:26:59,852 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:26:59,853 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-19 22:26:59,923 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 22:26:59,923 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:27:00,289 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 22:27:00,290 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1045029923] [2019-11-19 22:27:00,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:27:00,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-19 22:27:00,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480496573] [2019-11-19 22:27:00,291 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-19 22:27:00,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:27:00,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-19 22:27:00,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-19 22:27:00,291 INFO L87 Difference]: Start difference. First operand 137 states and 145 transitions. Second operand 10 states. [2019-11-19 22:27:01,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:27:01,494 INFO L93 Difference]: Finished difference Result 137 states and 146 transitions. [2019-11-19 22:27:01,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 22:27:01,501 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2019-11-19 22:27:01,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:27:01,503 INFO L225 Difference]: With dead ends: 137 [2019-11-19 22:27:01,503 INFO L226 Difference]: Without dead ends: 137 [2019-11-19 22:27:01,503 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-19 22:27:01,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2019-11-19 22:27:01,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2019-11-19 22:27:01,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-11-19 22:27:01,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 144 transitions. [2019-11-19 22:27:01,523 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 144 transitions. Word has length 28 [2019-11-19 22:27:01,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:27:01,524 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 144 transitions. [2019-11-19 22:27:01,524 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-19 22:27:01,524 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 144 transitions. [2019-11-19 22:27:01,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-19 22:27:01,525 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:27:01,525 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:27:01,733 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:27:01,733 INFO L410 AbstractCegarLoop]: === Iteration 6 === [sll_circular_appendErr19REQUIRES_VIOLATION, sll_circular_appendErr8REQUIRES_VIOLATION, sll_circular_appendErr18REQUIRES_VIOLATION, sll_circular_appendErr9REQUIRES_VIOLATION, sll_circular_appendErr0REQUIRES_VIOLATION, sll_circular_appendErr11REQUIRES_VIOLATION, sll_circular_appendErr10REQUIRES_VIOLATION, sll_circular_appendErr12REQUIRES_VIOLATION, sll_circular_appendErr1REQUIRES_VIOLATION, sll_circular_appendErr3REQUIRES_VIOLATION, sll_circular_appendErr13REQUIRES_VIOLATION, sll_circular_appendErr2REQUIRES_VIOLATION, sll_circular_appendErr15REQUIRES_VIOLATION, sll_circular_appendErr4REQUIRES_VIOLATION, sll_circular_appendErr14REQUIRES_VIOLATION, sll_circular_appendErr16REQUIRES_VIOLATION, sll_circular_appendErr5REQUIRES_VIOLATION, sll_circular_appendErr7REQUIRES_VIOLATION, sll_circular_appendErr17REQUIRES_VIOLATION, sll_circular_appendErr6REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr18ENSURES_VIOLATIONMEMORY_LEAK, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-19 22:27:01,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:27:01,733 INFO L82 PathProgramCache]: Analyzing trace with hash 2030464787, now seen corresponding path program 1 times [2019-11-19 22:27:01,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:27:01,738 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [465449407] [2019-11-19 22:27:01,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c7e8100-8354-4d2a-b65b-06f67d292c6d/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:27:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:27:02,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-19 22:27:02,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:27:02,030 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-19 22:27:02,030 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:27:02,033 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:27:02,033 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:27:02,033 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-19 22:27:02,156 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:27:02,157 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2019-11-19 22:27:02,158 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:27:02,178 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-19 22:27:02,179 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:27:02,179 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2019-11-19 22:27:02,192 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 22:27:02,192 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:27:02,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 22:27:02,374 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [465449407] [2019-11-19 22:27:02,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:27:02,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-11-19 22:27:02,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644982803] [2019-11-19 22:27:02,375 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-19 22:27:02,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:27:02,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-19 22:27:02,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-19 22:27:02,376 INFO L87 Difference]: Start difference. First operand 136 states and 144 transitions. Second operand 9 states. [2019-11-19 22:27:19,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:27:19,525 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2019-11-19 22:27:19,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-19 22:27:19,526 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2019-11-19 22:27:19,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:27:19,527 INFO L225 Difference]: With dead ends: 156 [2019-11-19 22:27:19,527 INFO L226 Difference]: Without dead ends: 156 [2019-11-19 22:27:19,528 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-11-19 22:27:19,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2019-11-19 22:27:19,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 135. [2019-11-19 22:27:19,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2019-11-19 22:27:19,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 143 transitions. [2019-11-19 22:27:19,552 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 143 transitions. Word has length 31 [2019-11-19 22:27:19,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:27:19,553 INFO L462 AbstractCegarLoop]: Abstraction has 135 states and 143 transitions. [2019-11-19 22:27:19,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-19 22:27:19,553 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 143 transitions. [2019-11-19 22:27:19,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-19 22:27:19,554 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:27:19,555 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:27:19,755 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:27:19,756 INFO L410 AbstractCegarLoop]: === Iteration 7 === [sll_circular_appendErr19REQUIRES_VIOLATION, sll_circular_appendErr8REQUIRES_VIOLATION, sll_circular_appendErr18REQUIRES_VIOLATION, sll_circular_appendErr9REQUIRES_VIOLATION, sll_circular_appendErr0REQUIRES_VIOLATION, sll_circular_appendErr11REQUIRES_VIOLATION, sll_circular_appendErr10REQUIRES_VIOLATION, sll_circular_appendErr12REQUIRES_VIOLATION, sll_circular_appendErr1REQUIRES_VIOLATION, sll_circular_appendErr3REQUIRES_VIOLATION, sll_circular_appendErr13REQUIRES_VIOLATION, sll_circular_appendErr2REQUIRES_VIOLATION, sll_circular_appendErr15REQUIRES_VIOLATION, sll_circular_appendErr4REQUIRES_VIOLATION, sll_circular_appendErr14REQUIRES_VIOLATION, sll_circular_appendErr16REQUIRES_VIOLATION, sll_circular_appendErr5REQUIRES_VIOLATION, sll_circular_appendErr7REQUIRES_VIOLATION, sll_circular_appendErr17REQUIRES_VIOLATION, sll_circular_appendErr6REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr18ENSURES_VIOLATIONMEMORY_LEAK, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-19 22:27:19,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:27:19,756 INFO L82 PathProgramCache]: Analyzing trace with hash 2030464788, now seen corresponding path program 1 times [2019-11-19 22:27:19,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:27:19,757 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [849714923] [2019-11-19 22:27:19,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c7e8100-8354-4d2a-b65b-06f67d292c6d/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:27:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:27:20,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-19 22:27:20,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:27:20,077 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-19 22:27:20,078 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:27:20,096 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:27:20,101 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-19 22:27:20,101 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 22:27:20,112 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:27:20,113 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:27:20,113 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-19 22:27:20,311 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:27:20,312 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2019-11-19 22:27:20,313 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:27:20,339 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:27:20,346 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2019-11-19 22:27:20,347 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 22:27:20,369 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:27:20,370 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:27:20,371 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:27, output treesize:20 [2019-11-19 22:27:20,443 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:27:20,444 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:27:20,604 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-19 22:27:20,834 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-19 22:27:20,835 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:27:20,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:27:20,838 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:27:20,852 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:27:20,853 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:27:20,855 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:27:20,857 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:27:20,858 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:27:25,276 WARN L191 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2019-11-19 22:27:25,299 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:27:27,958 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2019-11-19 22:27:28,753 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:27:28,753 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [849714923] [2019-11-19 22:27:28,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:27:28,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2019-11-19 22:27:28,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920247307] [2019-11-19 22:27:28,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-19 22:27:28,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:27:28,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-19 22:27:28,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=201, Unknown=1, NotChecked=0, Total=240 [2019-11-19 22:27:28,756 INFO L87 Difference]: Start difference. First operand 135 states and 143 transitions. Second operand 16 states. [2019-11-19 22:27:59,433 WARN L191 SmtUtils]: Spent 10.20 s on a formula simplification that was a NOOP. DAG size: 51 [2019-11-19 22:28:26,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:28:26,427 INFO L93 Difference]: Finished difference Result 154 states and 164 transitions. [2019-11-19 22:28:26,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-19 22:28:26,428 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 31 [2019-11-19 22:28:26,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:28:26,429 INFO L225 Difference]: With dead ends: 154 [2019-11-19 22:28:26,430 INFO L226 Difference]: Without dead ends: 154 [2019-11-19 22:28:26,430 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 42.9s TimeCoverageRelationStatistics Valid=80, Invalid=369, Unknown=13, NotChecked=0, Total=462 [2019-11-19 22:28:26,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-11-19 22:28:26,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 134. [2019-11-19 22:28:26,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-11-19 22:28:26,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 142 transitions. [2019-11-19 22:28:26,438 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 142 transitions. Word has length 31 [2019-11-19 22:28:26,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:28:26,439 INFO L462 AbstractCegarLoop]: Abstraction has 134 states and 142 transitions. [2019-11-19 22:28:26,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-19 22:28:26,439 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 142 transitions. [2019-11-19 22:28:26,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-19 22:28:26,441 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:28:26,442 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:28:26,653 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:28:26,653 INFO L410 AbstractCegarLoop]: === Iteration 8 === [sll_circular_appendErr19REQUIRES_VIOLATION, sll_circular_appendErr8REQUIRES_VIOLATION, sll_circular_appendErr18REQUIRES_VIOLATION, sll_circular_appendErr9REQUIRES_VIOLATION, sll_circular_appendErr0REQUIRES_VIOLATION, sll_circular_appendErr11REQUIRES_VIOLATION, sll_circular_appendErr10REQUIRES_VIOLATION, sll_circular_appendErr12REQUIRES_VIOLATION, sll_circular_appendErr1REQUIRES_VIOLATION, sll_circular_appendErr3REQUIRES_VIOLATION, sll_circular_appendErr13REQUIRES_VIOLATION, sll_circular_appendErr2REQUIRES_VIOLATION, sll_circular_appendErr15REQUIRES_VIOLATION, sll_circular_appendErr4REQUIRES_VIOLATION, sll_circular_appendErr14REQUIRES_VIOLATION, sll_circular_appendErr16REQUIRES_VIOLATION, sll_circular_appendErr5REQUIRES_VIOLATION, sll_circular_appendErr7REQUIRES_VIOLATION, sll_circular_appendErr17REQUIRES_VIOLATION, sll_circular_appendErr6REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr18ENSURES_VIOLATIONMEMORY_LEAK, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-19 22:28:26,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:28:26,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1593622880, now seen corresponding path program 1 times [2019-11-19 22:28:26,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:28:26,654 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [226235406] [2019-11-19 22:28:26,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c7e8100-8354-4d2a-b65b-06f67d292c6d/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:28:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:28:27,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-19 22:28:27,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:28:27,111 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-19 22:28:27,112 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:28:27,114 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:28:27,115 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:28:27,115 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-19 22:28:27,382 INFO L343 Elim1Store]: treesize reduction 27, result has 57.1 percent of original size [2019-11-19 22:28:27,382 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 [2019-11-19 22:28:27,383 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:28:27,415 INFO L567 ElimStorePlain]: treesize reduction 17, result has 54.1 percent of original size [2019-11-19 22:28:27,416 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. [2019-11-19 22:28:27,416 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:20 [2019-11-19 22:28:27,568 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:28:27,568 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 [2019-11-19 22:28:27,569 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:28:27,640 INFO L567 ElimStorePlain]: treesize reduction 28, result has 41.7 percent of original size [2019-11-19 22:28:27,641 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. [2019-11-19 22:28:27,642 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:20 [2019-11-19 22:28:27,693 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-19 22:28:27,693 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:28:42,915 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:28:42,916 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-19 22:28:42,920 INFO L168 Benchmark]: Toolchain (without parser) took 109728.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 184.5 MB). Free memory was 940.7 MB in the beginning and 991.7 MB in the end (delta: -51.0 MB). Peak memory consumption was 133.6 MB. Max. memory is 11.5 GB. [2019-11-19 22:28:42,921 INFO L168 Benchmark]: CDTParser took 0.68 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:28:42,921 INFO L168 Benchmark]: CACSL2BoogieTranslator took 620.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -166.1 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-19 22:28:42,922 INFO L168 Benchmark]: Boogie Preprocessor took 84.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-19 22:28:42,922 INFO L168 Benchmark]: RCFGBuilder took 1470.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 76.1 MB). Peak memory consumption was 76.1 MB. Max. memory is 11.5 GB. [2019-11-19 22:28:42,923 INFO L168 Benchmark]: TraceAbstraction took 107548.39 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 50.9 MB). Free memory was 1.0 GB in the beginning and 991.7 MB in the end (delta: 37.7 MB). Peak memory consumption was 88.5 MB. Max. memory is 11.5 GB. [2019-11-19 22:28:42,934 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 620.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -166.1 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 84.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1470.97 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: 76.1 MB). Peak memory consumption was 76.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 107548.39 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 50.9 MB). Free memory was 1.0 GB in the beginning and 991.7 MB in the end (delta: 37.7 MB). Peak memory consumption was 88.5 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...