./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/sll2n_append_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b5699aa Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_eb4d2c4a-50c9-4a7a-8409-23ef5c5575e2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_eb4d2c4a-50c9-4a7a-8409-23ef5c5575e2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_eb4d2c4a-50c9-4a7a-8409-23ef5c5575e2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_eb4d2c4a-50c9-4a7a-8409-23ef5c5575e2/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2n_append_unequal.i -s /tmp/vcloud-vcloud-master/worker/run_dir_eb4d2c4a-50c9-4a7a-8409-23ef5c5575e2/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_eb4d2c4a-50c9-4a7a-8409-23ef5c5575e2/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 cae663252cf3102da91695865874d633c1ee8349 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-25 08:49:16,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:49:16,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:49:16,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:49:16,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:49:16,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:49:16,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:49:16,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:49:16,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:49:16,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:49:16,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:49:16,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:49:16,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:49:16,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:49:16,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:49:16,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:49:16,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:49:16,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:49:16,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:49:16,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:49:16,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:49:16,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:49:16,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:49:16,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:49:16,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:49:16,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:49:16,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:49:16,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:49:16,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:49:16,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:49:16,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:49:16,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:49:16,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:49:16,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:49:16,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:49:16,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:49:16,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:49:16,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:49:16,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:49:16,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:49:16,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:49:16,211 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_eb4d2c4a-50c9-4a7a-8409-23ef5c5575e2/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-25 08:49:16,235 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:49:16,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:49:16,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:49:16,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:49:16,236 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:49:16,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:49:16,237 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:49:16,237 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:49:16,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:49:16,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:49:16,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:49:16,238 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-25 08:49:16,238 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-25 08:49:16,238 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-25 08:49:16,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:49:16,238 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:49:16,238 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:49:16,239 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:49:16,239 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:49:16,239 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:49:16,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:49:16,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:49:16,240 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:49:16,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:49:16,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:49:16,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:49:16,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:49:16,240 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:49:16,241 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:49:16,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:49:16,241 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_eb4d2c4a-50c9-4a7a-8409-23ef5c5575e2/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 -> cae663252cf3102da91695865874d633c1ee8349 [2019-11-25 08:49:16,383 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:49:16,393 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:49:16,396 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:49:16,398 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:49:16,398 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:49:16,399 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_eb4d2c4a-50c9-4a7a-8409-23ef5c5575e2/bin/uautomizer/../../sv-benchmarks/c/list-simple/sll2n_append_unequal.i [2019-11-25 08:49:16,449 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eb4d2c4a-50c9-4a7a-8409-23ef5c5575e2/bin/uautomizer/data/38ea390c6/280eea87f8f54e30af51603c643fe441/FLAGd39bb594d [2019-11-25 08:49:16,941 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:49:16,942 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_eb4d2c4a-50c9-4a7a-8409-23ef5c5575e2/sv-benchmarks/c/list-simple/sll2n_append_unequal.i [2019-11-25 08:49:16,958 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eb4d2c4a-50c9-4a7a-8409-23ef5c5575e2/bin/uautomizer/data/38ea390c6/280eea87f8f54e30af51603c643fe441/FLAGd39bb594d [2019-11-25 08:49:17,230 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_eb4d2c4a-50c9-4a7a-8409-23ef5c5575e2/bin/uautomizer/data/38ea390c6/280eea87f8f54e30af51603c643fe441 [2019-11-25 08:49:17,232 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:49:17,233 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-25 08:49:17,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:49:17,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:49:17,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:49:17,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:49:17" (1/1) ... [2019-11-25 08:49:17,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5475574e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:17, skipping insertion in model container [2019-11-25 08:49:17,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:49:17" (1/1) ... [2019-11-25 08:49:17,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:49:17,299 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:49:17,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:49:17,670 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:49:17,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:49:17,777 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:49:17,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:17 WrapperNode [2019-11-25 08:49:17,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:49:17,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:49:17,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:49:17,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:49:17,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:17" (1/1) ... [2019-11-25 08:49:17,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:17" (1/1) ... [2019-11-25 08:49:17,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:17" (1/1) ... [2019-11-25 08:49:17,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:17" (1/1) ... [2019-11-25 08:49:17,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:17" (1/1) ... [2019-11-25 08:49:17,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:17" (1/1) ... [2019-11-25 08:49:17,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:17" (1/1) ... [2019-11-25 08:49:17,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:49:17,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:49:17,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:49:17,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:49:17,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb4d2c4a-50c9-4a7a-8409-23ef5c5575e2/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:49:17,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-25 08:49:17,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:49:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:49:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-25 08:49:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-25 08:49:17,910 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-25 08:49:17,910 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-25 08:49:17,910 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-11-25 08:49:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-11-25 08:49:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2019-11-25 08:49:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-25 08:49:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-25 08:49:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-25 08:49:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-25 08:49:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-25 08:49:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-25 08:49:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-25 08:49:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-25 08:49:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-25 08:49:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-25 08:49:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-25 08:49:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-25 08:49:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-25 08:49:17,915 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-25 08:49:17,915 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-25 08:49:17,915 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-25 08:49:17,916 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-25 08:49:17,916 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-25 08:49:17,916 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-25 08:49:17,916 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-25 08:49:17,916 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-25 08:49:17,916 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-25 08:49:17,916 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-25 08:49:17,916 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-25 08:49:17,917 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-25 08:49:17,917 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-25 08:49:17,917 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-25 08:49:17,917 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-25 08:49:17,917 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-25 08:49:17,917 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-25 08:49:17,917 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-25 08:49:17,917 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-25 08:49:17,918 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-25 08:49:17,918 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-25 08:49:17,918 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-25 08:49:17,918 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-25 08:49:17,918 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-25 08:49:17,918 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-25 08:49:17,918 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-25 08:49:17,918 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-25 08:49:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-25 08:49:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-25 08:49:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-25 08:49:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-25 08:49:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-25 08:49:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-25 08:49:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-25 08:49:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-25 08:49:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-25 08:49:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-25 08:49:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-25 08:49:17,921 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-25 08:49:17,921 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-25 08:49:17,921 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-25 08:49:17,921 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-25 08:49:17,921 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-25 08:49:17,922 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-25 08:49:17,922 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-25 08:49:17,922 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-25 08:49:17,923 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-25 08:49:17,924 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-25 08:49:17,924 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-25 08:49:17,925 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-25 08:49:17,925 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-25 08:49:17,926 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-25 08:49:17,926 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-25 08:49:17,927 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-25 08:49:17,927 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-25 08:49:17,927 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-25 08:49:17,927 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-25 08:49:17,927 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-25 08:49:17,927 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-25 08:49:17,928 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-25 08:49:17,928 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-25 08:49:17,929 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-25 08:49:17,929 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-25 08:49:17,929 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-25 08:49:17,929 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-25 08:49:17,929 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-25 08:49:17,929 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-25 08:49:17,929 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-25 08:49:17,929 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-25 08:49:17,930 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-25 08:49:17,930 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-25 08:49:17,930 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-25 08:49:17,930 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-25 08:49:17,930 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-25 08:49:17,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-25 08:49:17,930 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-25 08:49:17,930 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-25 08:49:17,931 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-25 08:49:17,931 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-25 08:49:17,931 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-25 08:49:17,931 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-25 08:49:17,931 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-25 08:49:17,931 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-25 08:49:17,931 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-25 08:49:17,931 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-25 08:49:17,932 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-25 08:49:17,932 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-25 08:49:17,932 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-25 08:49:17,932 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-25 08:49:17,932 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-25 08:49:17,932 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-25 08:49:17,932 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-25 08:49:17,933 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-25 08:49:17,934 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-25 08:49:17,934 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-25 08:49:17,934 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-25 08:49:17,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-25 08:49:17,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-25 08:49:17,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-25 08:49:17,935 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-11-25 08:49:17,935 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-11-25 08:49:17,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-25 08:49:17,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:49:17,936 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2019-11-25 08:49:17,936 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-25 08:49:17,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:49:17,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-25 08:49:17,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:49:17,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-25 08:49:17,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:49:17,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:49:18,400 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-25 08:49:18,890 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:49:18,890 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-25 08:49:18,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:18 BoogieIcfgContainer [2019-11-25 08:49:18,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:49:18,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:49:18,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:49:18,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:49:18,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:49:17" (1/3) ... [2019-11-25 08:49:18,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c517c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:49:18, skipping insertion in model container [2019-11-25 08:49:18,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:17" (2/3) ... [2019-11-25 08:49:18,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c517c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:49:18, skipping insertion in model container [2019-11-25 08:49:18,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:18" (3/3) ... [2019-11-25 08:49:18,896 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_append_unequal.i [2019-11-25 08:49:18,903 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:49:18,909 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2019-11-25 08:49:18,917 INFO L249 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2019-11-25 08:49:18,938 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:49:18,938 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-25 08:49:18,938 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:49:18,938 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:49:18,940 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:49:18,940 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:49:18,940 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:49:18,940 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:49:18,957 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states. [2019-11-25 08:49:18,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-25 08:49:18,964 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:18,965 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:18,965 INFO L410 AbstractCegarLoop]: === Iteration 1 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_appendErr9REQUIRES_VIOLATION, sll_appendErr4REQUIRES_VIOLATION, sll_appendErr2REQUIRES_VIOLATION, sll_appendErr8REQUIRES_VIOLATION, sll_appendErr3REQUIRES_VIOLATION, sll_appendErr6REQUIRES_VIOLATION, sll_appendErr1REQUIRES_VIOLATION, sll_appendErr7REQUIRES_VIOLATION, sll_appendErr10REQUIRES_VIOLATION, sll_appendErr5REQUIRES_VIOLATION, sll_appendErr0REQUIRES_VIOLATION, sll_appendErr11REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-25 08:49:18,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:18,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1967657175, now seen corresponding path program 1 times [2019-11-25 08:49:18,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:18,981 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [931153663] [2019-11-25 08:49:18,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb4d2c4a-50c9-4a7a-8409-23ef5c5575e2/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:19,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:49:19,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:19,315 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-25 08:49:19,315 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:49:19,330 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:49:19,331 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:49:19,331 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-25 08:49:19,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:19,344 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:49:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:19,357 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [931153663] [2019-11-25 08:49:19,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:19,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:49:19,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024535120] [2019-11-25 08:49:19,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:49:19,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:49:19,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:49:19,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:49:19,373 INFO L87 Difference]: Start difference. First operand 112 states. Second operand 3 states. [2019-11-25 08:49:19,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:19,557 INFO L93 Difference]: Finished difference Result 110 states and 119 transitions. [2019-11-25 08:49:19,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:49:19,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-25 08:49:19,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:19,573 INFO L225 Difference]: With dead ends: 110 [2019-11-25 08:49:19,573 INFO L226 Difference]: Without dead ends: 103 [2019-11-25 08:49:19,575 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:49:19,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-25 08:49:19,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2019-11-25 08:49:19,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-11-25 08:49:19,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2019-11-25 08:49:19,625 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 13 [2019-11-25 08:49:19,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:19,625 INFO L462 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2019-11-25 08:49:19,625 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:49:19,625 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2019-11-25 08:49:19,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-25 08:49:19,626 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:19,626 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:19,829 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:19,829 INFO L410 AbstractCegarLoop]: === Iteration 2 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_appendErr9REQUIRES_VIOLATION, sll_appendErr4REQUIRES_VIOLATION, sll_appendErr2REQUIRES_VIOLATION, sll_appendErr8REQUIRES_VIOLATION, sll_appendErr3REQUIRES_VIOLATION, sll_appendErr6REQUIRES_VIOLATION, sll_appendErr1REQUIRES_VIOLATION, sll_appendErr7REQUIRES_VIOLATION, sll_appendErr10REQUIRES_VIOLATION, sll_appendErr5REQUIRES_VIOLATION, sll_appendErr0REQUIRES_VIOLATION, sll_appendErr11REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-25 08:49:19,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:19,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1967657176, now seen corresponding path program 1 times [2019-11-25 08:49:19,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:19,830 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [359206007] [2019-11-25 08:49:19,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb4d2c4a-50c9-4a7a-8409-23ef5c5575e2/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:20,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:49:20,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:20,043 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-25 08:49:20,043 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:49:20,053 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:49:20,053 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:49:20,054 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-25 08:49:20,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:20,064 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:49:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:20,105 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [359206007] [2019-11-25 08:49:20,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:20,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-25 08:49:20,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270095716] [2019-11-25 08:49:20,107 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:49:20,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:49:20,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:49:20,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:49:20,108 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand 4 states. [2019-11-25 08:49:20,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:20,413 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2019-11-25 08:49:20,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:49:20,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-25 08:49:20,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:20,416 INFO L225 Difference]: With dead ends: 101 [2019-11-25 08:49:20,417 INFO L226 Difference]: Without dead ends: 101 [2019-11-25 08:49:20,417 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:49:20,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-11-25 08:49:20,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2019-11-25 08:49:20,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-11-25 08:49:20,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions. [2019-11-25 08:49:20,430 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 13 [2019-11-25 08:49:20,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:20,432 INFO L462 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions. [2019-11-25 08:49:20,436 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:49:20,437 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions. [2019-11-25 08:49:20,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-25 08:49:20,438 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:20,439 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:20,642 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:20,643 INFO L410 AbstractCegarLoop]: === Iteration 3 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_appendErr9REQUIRES_VIOLATION, sll_appendErr4REQUIRES_VIOLATION, sll_appendErr2REQUIRES_VIOLATION, sll_appendErr8REQUIRES_VIOLATION, sll_appendErr3REQUIRES_VIOLATION, sll_appendErr6REQUIRES_VIOLATION, sll_appendErr1REQUIRES_VIOLATION, sll_appendErr7REQUIRES_VIOLATION, sll_appendErr10REQUIRES_VIOLATION, sll_appendErr5REQUIRES_VIOLATION, sll_appendErr0REQUIRES_VIOLATION, sll_appendErr11REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-25 08:49:20,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:20,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1824227281, now seen corresponding path program 1 times [2019-11-25 08:49:20,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:20,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1465570939] [2019-11-25 08:49:20,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb4d2c4a-50c9-4a7a-8409-23ef5c5575e2/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:20,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:49:20,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:20,880 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-25 08:49:20,881 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:49:20,883 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:49:20,883 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:49:20,884 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-25 08:49:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:20,919 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:49:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:20,985 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1465570939] [2019-11-25 08:49:20,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:20,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-25 08:49:20,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595875720] [2019-11-25 08:49:20,986 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:49:20,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:49:20,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:49:20,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:49:20,987 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand 6 states. [2019-11-25 08:49:21,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:21,446 INFO L93 Difference]: Finished difference Result 105 states and 113 transitions. [2019-11-25 08:49:21,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:49:21,446 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2019-11-25 08:49:21,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:21,449 INFO L225 Difference]: With dead ends: 105 [2019-11-25 08:49:21,449 INFO L226 Difference]: Without dead ends: 105 [2019-11-25 08:49:21,450 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:49:21,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-11-25 08:49:21,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 100. [2019-11-25 08:49:21,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-11-25 08:49:21,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2019-11-25 08:49:21,460 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 19 [2019-11-25 08:49:21,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:21,461 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2019-11-25 08:49:21,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:49:21,461 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2019-11-25 08:49:21,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-25 08:49:21,462 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:21,462 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:21,665 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:21,666 INFO L410 AbstractCegarLoop]: === Iteration 4 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_appendErr9REQUIRES_VIOLATION, sll_appendErr4REQUIRES_VIOLATION, sll_appendErr2REQUIRES_VIOLATION, sll_appendErr8REQUIRES_VIOLATION, sll_appendErr3REQUIRES_VIOLATION, sll_appendErr6REQUIRES_VIOLATION, sll_appendErr1REQUIRES_VIOLATION, sll_appendErr7REQUIRES_VIOLATION, sll_appendErr10REQUIRES_VIOLATION, sll_appendErr5REQUIRES_VIOLATION, sll_appendErr0REQUIRES_VIOLATION, sll_appendErr11REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-25 08:49:21,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:21,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1824227280, now seen corresponding path program 1 times [2019-11-25 08:49:21,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:21,666 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2027886479] [2019-11-25 08:49:21,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb4d2c4a-50c9-4a7a-8409-23ef5c5575e2/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:21,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-25 08:49:21,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:21,889 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-25 08:49:21,890 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:49:21,896 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:49:21,896 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:49:21,897 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-25 08:49:21,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:21,951 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:49:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:22,286 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2027886479] [2019-11-25 08:49:22,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:22,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-25 08:49:22,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736388754] [2019-11-25 08:49:22,287 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-25 08:49:22,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:49:22,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-25 08:49:22,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:49:22,288 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand 10 states. [2019-11-25 08:49:23,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:23,100 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2019-11-25 08:49:23,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:49:23,102 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-11-25 08:49:23,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:23,103 INFO L225 Difference]: With dead ends: 104 [2019-11-25 08:49:23,103 INFO L226 Difference]: Without dead ends: 104 [2019-11-25 08:49:23,103 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:49:23,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-11-25 08:49:23,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 99. [2019-11-25 08:49:23,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-11-25 08:49:23,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 105 transitions. [2019-11-25 08:49:23,112 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 105 transitions. Word has length 19 [2019-11-25 08:49:23,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:23,112 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 105 transitions. [2019-11-25 08:49:23,112 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-25 08:49:23,112 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 105 transitions. [2019-11-25 08:49:23,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-25 08:49:23,113 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:23,114 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:23,316 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:23,317 INFO L410 AbstractCegarLoop]: === Iteration 5 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_appendErr9REQUIRES_VIOLATION, sll_appendErr4REQUIRES_VIOLATION, sll_appendErr2REQUIRES_VIOLATION, sll_appendErr8REQUIRES_VIOLATION, sll_appendErr3REQUIRES_VIOLATION, sll_appendErr6REQUIRES_VIOLATION, sll_appendErr1REQUIRES_VIOLATION, sll_appendErr7REQUIRES_VIOLATION, sll_appendErr10REQUIRES_VIOLATION, sll_appendErr5REQUIRES_VIOLATION, sll_appendErr0REQUIRES_VIOLATION, sll_appendErr11REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-25 08:49:23,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:23,317 INFO L82 PathProgramCache]: Analyzing trace with hash -2101575002, now seen corresponding path program 1 times [2019-11-25 08:49:23,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:23,318 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1958333440] [2019-11-25 08:49:23,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb4d2c4a-50c9-4a7a-8409-23ef5c5575e2/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:23,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:49:23,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:23,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:23,574 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:49:23,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:23,637 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1958333440] [2019-11-25 08:49:23,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:23,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-11-25 08:49:23,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286524272] [2019-11-25 08:49:23,638 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:49:23,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:49:23,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:49:23,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:49:23,638 INFO L87 Difference]: Start difference. First operand 99 states and 105 transitions. Second operand 7 states. [2019-11-25 08:49:23,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:23,700 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2019-11-25 08:49:23,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:49:23,701 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2019-11-25 08:49:23,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:23,702 INFO L225 Difference]: With dead ends: 108 [2019-11-25 08:49:23,702 INFO L226 Difference]: Without dead ends: 105 [2019-11-25 08:49:23,703 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:49:23,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-11-25 08:49:23,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 100. [2019-11-25 08:49:23,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-11-25 08:49:23,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2019-11-25 08:49:23,715 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 25 [2019-11-25 08:49:23,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:23,715 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2019-11-25 08:49:23,715 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:49:23,715 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2019-11-25 08:49:23,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-25 08:49:23,717 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:23,717 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:23,917 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:23,918 INFO L410 AbstractCegarLoop]: === Iteration 6 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_appendErr9REQUIRES_VIOLATION, sll_appendErr4REQUIRES_VIOLATION, sll_appendErr2REQUIRES_VIOLATION, sll_appendErr8REQUIRES_VIOLATION, sll_appendErr3REQUIRES_VIOLATION, sll_appendErr6REQUIRES_VIOLATION, sll_appendErr1REQUIRES_VIOLATION, sll_appendErr7REQUIRES_VIOLATION, sll_appendErr10REQUIRES_VIOLATION, sll_appendErr5REQUIRES_VIOLATION, sll_appendErr0REQUIRES_VIOLATION, sll_appendErr11REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-25 08:49:23,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:23,918 INFO L82 PathProgramCache]: Analyzing trace with hash -131651139, now seen corresponding path program 1 times [2019-11-25 08:49:23,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:23,918 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1907769753] [2019-11-25 08:49:23,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb4d2c4a-50c9-4a7a-8409-23ef5c5575e2/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:24,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:49:24,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:24,157 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:24,157 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:49:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-25 08:49:24,298 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1907769753] [2019-11-25 08:49:24,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:49:24,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-11-25 08:49:24,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718630248] [2019-11-25 08:49:24,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-25 08:49:24,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:49:24,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:49:24,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:49:24,300 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand 9 states. [2019-11-25 08:49:24,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:24,464 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2019-11-25 08:49:24,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:49:24,464 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2019-11-25 08:49:24,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:24,466 INFO L225 Difference]: With dead ends: 114 [2019-11-25 08:49:24,466 INFO L226 Difference]: Without dead ends: 111 [2019-11-25 08:49:24,466 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:49:24,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-11-25 08:49:24,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 106. [2019-11-25 08:49:24,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-11-25 08:49:24,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 113 transitions. [2019-11-25 08:49:24,472 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 113 transitions. Word has length 38 [2019-11-25 08:49:24,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:24,480 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 113 transitions. [2019-11-25 08:49:24,480 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-25 08:49:24,480 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 113 transitions. [2019-11-25 08:49:24,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-25 08:49:24,483 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:24,483 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:24,686 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:24,687 INFO L410 AbstractCegarLoop]: === Iteration 7 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_appendErr9REQUIRES_VIOLATION, sll_appendErr4REQUIRES_VIOLATION, sll_appendErr2REQUIRES_VIOLATION, sll_appendErr8REQUIRES_VIOLATION, sll_appendErr3REQUIRES_VIOLATION, sll_appendErr6REQUIRES_VIOLATION, sll_appendErr1REQUIRES_VIOLATION, sll_appendErr7REQUIRES_VIOLATION, sll_appendErr10REQUIRES_VIOLATION, sll_appendErr5REQUIRES_VIOLATION, sll_appendErr0REQUIRES_VIOLATION, sll_appendErr11REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-25 08:49:24,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:24,687 INFO L82 PathProgramCache]: Analyzing trace with hash 410058758, now seen corresponding path program 2 times [2019-11-25 08:49:24,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:24,688 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1050838531] [2019-11-25 08:49:24,688 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb4d2c4a-50c9-4a7a-8409-23ef5c5575e2/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:24,979 ERROR L271 FreeRefinementEngine]: Caught known exception: Array theory solver does not yet support write-chains connecting two different constant arrays [2019-11-25 08:49:24,979 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982470163] [2019-11-25 08:49:24,979 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb4d2c4a-50c9-4a7a-8409-23ef5c5575e2/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:25,229 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:49:25,230 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:49:25,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-25 08:49:25,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:25,245 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-25 08:49:25,246 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:49:25,248 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:49:25,248 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:49:25,248 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-25 08:49:25,446 INFO L343 Elim1Store]: treesize reduction 27, result has 57.1 percent of original size [2019-11-25 08:49:25,446 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 49 [2019-11-25 08:49:25,448 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:49:25,491 INFO L567 ElimStorePlain]: treesize reduction 17, result has 54.1 percent of original size [2019-11-25 08:49:25,492 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-25 08:49:25,493 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:20 [2019-11-25 08:49:25,652 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:49:25,653 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 17 treesize of output 50 [2019-11-25 08:49:25,654 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:49:25,699 INFO L567 ElimStorePlain]: treesize reduction 28, result has 41.7 percent of original size [2019-11-25 08:49:25,700 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-25 08:49:25,701 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:20 [2019-11-25 08:49:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-25 08:49:25,747 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:49:40,819 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:40,820 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Alternating quantifiers not yet supported at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-25 08:49:40,822 INFO L168 Benchmark]: Toolchain (without parser) took 23589.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 179.3 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -115.3 MB). Peak memory consumption was 64.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:40,823 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:49:40,823 INFO L168 Benchmark]: CACSL2BoogieTranslator took 544.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -165.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:40,823 INFO L168 Benchmark]: Boogie Preprocessor took 67.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:40,824 INFO L168 Benchmark]: RCFGBuilder took 1045.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 70.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:40,824 INFO L168 Benchmark]: TraceAbstraction took 21930.12 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 47.2 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -21.5 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:40,826 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 544.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -165.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 67.40 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 1045.09 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: 70.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 21930.12 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 47.2 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -21.5 MB). Peak memory consumption was 25.7 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...