./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/sll2n_insert_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 678e0110 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fe320f55-e019-4c7c-bfd4-020a623bcecb/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fe320f55-e019-4c7c-bfd4-020a623bcecb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fe320f55-e019-4c7c-bfd4-020a623bcecb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fe320f55-e019-4c7c-bfd4-020a623bcecb/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2n_insert_unequal.i -s /tmp/vcloud-vcloud-master/worker/run_dir_fe320f55-e019-4c7c-bfd4-020a623bcecb/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fe320f55-e019-4c7c-bfd4-020a623bcecb/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e8a969aa7540449c385b0805dd526ab02ff09b47 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 00:03:03,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 00:03:03,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 00:03:03,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 00:03:03,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 00:03:03,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 00:03:03,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 00:03:03,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 00:03:03,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 00:03:03,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 00:03:03,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 00:03:03,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 00:03:03,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 00:03:03,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 00:03:03,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 00:03:03,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 00:03:03,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 00:03:03,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 00:03:03,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 00:03:03,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 00:03:03,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 00:03:03,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 00:03:03,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 00:03:03,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 00:03:03,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 00:03:03,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 00:03:03,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 00:03:03,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 00:03:03,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 00:03:03,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 00:03:03,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 00:03:03,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 00:03:03,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 00:03:03,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 00:03:03,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 00:03:03,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 00:03:03,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 00:03:03,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 00:03:03,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 00:03:03,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 00:03:03,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 00:03:03,262 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fe320f55-e019-4c7c-bfd4-020a623bcecb/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 00:03:03,279 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 00:03:03,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 00:03:03,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 00:03:03,281 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 00:03:03,281 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 00:03:03,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 00:03:03,282 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 00:03:03,282 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 00:03:03,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 00:03:03,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 00:03:03,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 00:03:03,283 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 00:03:03,284 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 00:03:03,284 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 00:03:03,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 00:03:03,284 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 00:03:03,284 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 00:03:03,285 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 00:03:03,285 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 00:03:03,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 00:03:03,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 00:03:03,285 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 00:03:03,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 00:03:03,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 00:03:03,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 00:03:03,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 00:03:03,287 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 00:03:03,287 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 00:03:03,287 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 00:03:03,287 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_fe320f55-e019-4c7c-bfd4-020a623bcecb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8a969aa7540449c385b0805dd526ab02ff09b47 [2019-11-20 00:03:03,475 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 00:03:03,484 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 00:03:03,488 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 00:03:03,489 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 00:03:03,489 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 00:03:03,491 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fe320f55-e019-4c7c-bfd4-020a623bcecb/bin/uautomizer/../../sv-benchmarks/c/list-simple/sll2n_insert_unequal.i [2019-11-20 00:03:03,550 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fe320f55-e019-4c7c-bfd4-020a623bcecb/bin/uautomizer/data/318fce31b/8cd23b9f2cb041118262320fabdccb38/FLAGde4a35ff6 [2019-11-20 00:03:04,032 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 00:03:04,033 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fe320f55-e019-4c7c-bfd4-020a623bcecb/sv-benchmarks/c/list-simple/sll2n_insert_unequal.i [2019-11-20 00:03:04,052 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fe320f55-e019-4c7c-bfd4-020a623bcecb/bin/uautomizer/data/318fce31b/8cd23b9f2cb041118262320fabdccb38/FLAGde4a35ff6 [2019-11-20 00:03:04,360 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fe320f55-e019-4c7c-bfd4-020a623bcecb/bin/uautomizer/data/318fce31b/8cd23b9f2cb041118262320fabdccb38 [2019-11-20 00:03:04,363 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 00:03:04,364 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 00:03:04,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 00:03:04,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 00:03:04,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 00:03:04,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:03:04" (1/1) ... [2019-11-20 00:03:04,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4369cc89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:04, skipping insertion in model container [2019-11-20 00:03:04,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:03:04" (1/1) ... [2019-11-20 00:03:04,389 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 00:03:04,435 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 00:03:04,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:03:04,806 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 00:03:04,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:03:04,963 INFO L192 MainTranslator]: Completed translation [2019-11-20 00:03:04,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:04 WrapperNode [2019-11-20 00:03:04,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 00:03:04,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 00:03:04,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 00:03:04,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 00:03:04,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:04" (1/1) ... [2019-11-20 00:03:04,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:04" (1/1) ... [2019-11-20 00:03:05,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:04" (1/1) ... [2019-11-20 00:03:05,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:04" (1/1) ... [2019-11-20 00:03:05,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:04" (1/1) ... [2019-11-20 00:03:05,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:04" (1/1) ... [2019-11-20 00:03:05,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:04" (1/1) ... [2019-11-20 00:03:05,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 00:03:05,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 00:03:05,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 00:03:05,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 00:03:05,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe320f55-e019-4c7c-bfd4-020a623bcecb/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 00:03:05,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 00:03:05,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 00:03:05,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 00:03:05,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 00:03:05,105 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-20 00:03:05,105 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-20 00:03:05,106 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-11-20 00:03:05,106 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-11-20 00:03:05,106 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2019-11-20 00:03:05,106 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 00:03:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-20 00:03:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 00:03:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 00:03:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 00:03:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 00:03:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 00:03:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 00:03:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 00:03:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 00:03:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 00:03:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 00:03:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 00:03:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 00:03:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 00:03:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 00:03:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 00:03:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 00:03:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 00:03:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 00:03:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 00:03:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 00:03:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 00:03:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 00:03:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 00:03:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 00:03:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 00:03:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 00:03:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 00:03:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 00:03:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 00:03:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 00:03:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 00:03:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 00:03:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 00:03:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 00:03:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 00:03:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 00:03:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 00:03:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 00:03:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 00:03:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 00:03:05,114 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 00:03:05,114 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 00:03:05,114 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 00:03:05,114 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 00:03:05,114 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 00:03:05,114 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 00:03:05,115 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 00:03:05,115 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 00:03:05,115 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 00:03:05,115 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 00:03:05,115 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 00:03:05,115 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 00:03:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 00:03:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 00:03:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 00:03:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 00:03:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 00:03:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-20 00:03:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 00:03:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 00:03:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 00:03:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 00:03:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 00:03:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 00:03:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 00:03:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 00:03:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 00:03:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 00:03:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 00:03:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 00:03:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 00:03:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 00:03:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 00:03:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 00:03:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 00:03:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 00:03:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 00:03:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 00:03:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 00:03:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 00:03:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 00:03:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 00:03:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 00:03:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 00:03:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 00:03:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 00:03:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 00:03:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 00:03:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 00:03:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 00:03:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 00:03:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 00:03:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 00:03:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 00:03:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 00:03:05,123 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 00:03:05,123 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 00:03:05,123 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 00:03:05,123 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 00:03:05,123 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 00:03:05,123 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 00:03:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 00:03:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 00:03:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 00:03:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 00:03:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 00:03:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-20 00:03:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-20 00:03:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 00:03:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 00:03:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 00:03:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-11-20 00:03:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-11-20 00:03:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 00:03:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 00:03:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2019-11-20 00:03:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 00:03:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 00:03:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-20 00:03:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 00:03:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 00:03:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 00:03:05,634 INFO L689 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-20 00:03:06,187 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 00:03:06,187 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 00:03:06,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:03:06 BoogieIcfgContainer [2019-11-20 00:03:06,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 00:03:06,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 00:03:06,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 00:03:06,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 00:03:06,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:03:04" (1/3) ... [2019-11-20 00:03:06,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eed82e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:03:06, skipping insertion in model container [2019-11-20 00:03:06,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:04" (2/3) ... [2019-11-20 00:03:06,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eed82e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:03:06, skipping insertion in model container [2019-11-20 00:03:06,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:03:06" (3/3) ... [2019-11-20 00:03:06,195 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_insert_unequal.i [2019-11-20 00:03:06,204 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 00:03:06,211 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2019-11-20 00:03:06,220 INFO L249 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2019-11-20 00:03:06,237 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 00:03:06,238 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 00:03:06,238 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 00:03:06,238 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 00:03:06,238 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 00:03:06,238 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 00:03:06,239 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 00:03:06,239 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 00:03:06,255 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states. [2019-11-20 00:03:06,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 00:03:06,264 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:03:06,264 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:03:06,265 INFO L410 AbstractCegarLoop]: === Iteration 1 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, sll_insertErr6REQUIRES_VIOLATION, sll_insertErr0REQUIRES_VIOLATION, sll_insertErr1REQUIRES_VIOLATION, sll_insertErr7REQUIRES_VIOLATION, sll_insertErr5REQUIRES_VIOLATION, sll_insertErr9REQUIRES_VIOLATION, sll_insertErr4REQUIRES_VIOLATION, sll_insertErr2REQUIRES_VIOLATION, sll_insertErr8REQUIRES_VIOLATION, sll_insertErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 00:03:06,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:03:06,270 INFO L82 PathProgramCache]: Analyzing trace with hash -527605106, now seen corresponding path program 1 times [2019-11-20 00:03:06,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 00:03:06,281 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2112273982] [2019-11-20 00:03:06,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe320f55-e019-4c7c-bfd4-020a623bcecb/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 00:03:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:03:06,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 00:03:06,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:03:06,577 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 00:03:06,578 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 00:03:06,587 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:03:06,588 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 00:03:06,588 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 00:03:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:03:06,597 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 00:03:06,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:03:06,616 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2112273982] [2019-11-20 00:03:06,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:03:06,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 00:03:06,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746805770] [2019-11-20 00:03:06,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 00:03:06,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 00:03:06,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 00:03:06,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 00:03:06,636 INFO L87 Difference]: Start difference. First operand 115 states. Second operand 3 states. [2019-11-20 00:03:06,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:03:06,867 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2019-11-20 00:03:06,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 00:03:06,868 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-20 00:03:06,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:03:06,878 INFO L225 Difference]: With dead ends: 113 [2019-11-20 00:03:06,878 INFO L226 Difference]: Without dead ends: 106 [2019-11-20 00:03:06,882 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 [2019-11-20 00:03:06,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-11-20 00:03:06,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2019-11-20 00:03:06,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-11-20 00:03:06,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 112 transitions. [2019-11-20 00:03:06,955 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 112 transitions. Word has length 13 [2019-11-20 00:03:06,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:03:06,957 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 112 transitions. [2019-11-20 00:03:06,957 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 00:03:06,957 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 112 transitions. [2019-11-20 00:03:06,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 00:03:06,958 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:03:06,958 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:03:07,172 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 00:03:07,172 INFO L410 AbstractCegarLoop]: === Iteration 2 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, sll_insertErr6REQUIRES_VIOLATION, sll_insertErr0REQUIRES_VIOLATION, sll_insertErr1REQUIRES_VIOLATION, sll_insertErr7REQUIRES_VIOLATION, sll_insertErr5REQUIRES_VIOLATION, sll_insertErr9REQUIRES_VIOLATION, sll_insertErr4REQUIRES_VIOLATION, sll_insertErr2REQUIRES_VIOLATION, sll_insertErr8REQUIRES_VIOLATION, sll_insertErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 00:03:07,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:03:07,173 INFO L82 PathProgramCache]: Analyzing trace with hash -527605105, now seen corresponding path program 1 times [2019-11-20 00:03:07,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 00:03:07,173 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [848170017] [2019-11-20 00:03:07,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe320f55-e019-4c7c-bfd4-020a623bcecb/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 00:03:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:03:07,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 00:03:07,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:03:07,402 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 00:03:07,402 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 00:03:07,415 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:03:07,415 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 00:03:07,415 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 00:03:07,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:03:07,426 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 00:03:07,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:03:07,485 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [848170017] [2019-11-20 00:03:07,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:03:07,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 00:03:07,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208986906] [2019-11-20 00:03:07,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 00:03:07,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 00:03:07,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 00:03:07,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 00:03:07,488 INFO L87 Difference]: Start difference. First operand 106 states and 112 transitions. Second operand 4 states. [2019-11-20 00:03:07,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:03:07,911 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2019-11-20 00:03:07,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 00:03:07,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-20 00:03:07,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:03:07,915 INFO L225 Difference]: With dead ends: 104 [2019-11-20 00:03:07,915 INFO L226 Difference]: Without dead ends: 104 [2019-11-20 00:03:07,916 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 [2019-11-20 00:03:07,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-11-20 00:03:07,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2019-11-20 00:03:07,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-11-20 00:03:07,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 110 transitions. [2019-11-20 00:03:07,927 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 110 transitions. Word has length 13 [2019-11-20 00:03:07,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:03:07,928 INFO L462 AbstractCegarLoop]: Abstraction has 104 states and 110 transitions. [2019-11-20 00:03:07,928 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 00:03:07,928 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 110 transitions. [2019-11-20 00:03:07,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-20 00:03:07,929 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:03:07,929 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:03:08,133 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 00:03:08,133 INFO L410 AbstractCegarLoop]: === Iteration 3 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, sll_insertErr6REQUIRES_VIOLATION, sll_insertErr0REQUIRES_VIOLATION, sll_insertErr1REQUIRES_VIOLATION, sll_insertErr7REQUIRES_VIOLATION, sll_insertErr5REQUIRES_VIOLATION, sll_insertErr9REQUIRES_VIOLATION, sll_insertErr4REQUIRES_VIOLATION, sll_insertErr2REQUIRES_VIOLATION, sll_insertErr8REQUIRES_VIOLATION, sll_insertErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 00:03:08,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:03:08,134 INFO L82 PathProgramCache]: Analyzing trace with hash 961717555, now seen corresponding path program 1 times [2019-11-20 00:03:08,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 00:03:08,135 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [784293065] [2019-11-20 00:03:08,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe320f55-e019-4c7c-bfd4-020a623bcecb/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 00:03:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:03:08,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 00:03:08,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:03:08,351 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 00:03:08,351 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 00:03:08,354 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:03:08,354 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 00:03:08,354 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 00:03:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:03:08,393 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 00:03:08,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:03:08,472 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [784293065] [2019-11-20 00:03:08,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:03:08,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 00:03:08,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911400453] [2019-11-20 00:03:08,473 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 00:03:08,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 00:03:08,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 00:03:08,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-20 00:03:08,474 INFO L87 Difference]: Start difference. First operand 104 states and 110 transitions. Second operand 6 states. [2019-11-20 00:03:08,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:03:08,956 INFO L93 Difference]: Finished difference Result 108 states and 116 transitions. [2019-11-20 00:03:08,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 00:03:08,959 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2019-11-20 00:03:08,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:03:08,962 INFO L225 Difference]: With dead ends: 108 [2019-11-20 00:03:08,962 INFO L226 Difference]: Without dead ends: 108 [2019-11-20 00:03:08,962 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 [2019-11-20 00:03:08,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2019-11-20 00:03:08,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 103. [2019-11-20 00:03:08,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-11-20 00:03:08,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2019-11-20 00:03:08,982 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 19 [2019-11-20 00:03:08,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:03:08,983 INFO L462 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2019-11-20 00:03:08,983 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 00:03:08,983 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2019-11-20 00:03:08,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-20 00:03:08,984 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:03:08,984 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:03:09,194 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 00:03:09,195 INFO L410 AbstractCegarLoop]: === Iteration 4 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, sll_insertErr6REQUIRES_VIOLATION, sll_insertErr0REQUIRES_VIOLATION, sll_insertErr1REQUIRES_VIOLATION, sll_insertErr7REQUIRES_VIOLATION, sll_insertErr5REQUIRES_VIOLATION, sll_insertErr9REQUIRES_VIOLATION, sll_insertErr4REQUIRES_VIOLATION, sll_insertErr2REQUIRES_VIOLATION, sll_insertErr8REQUIRES_VIOLATION, sll_insertErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 00:03:09,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:03:09,195 INFO L82 PathProgramCache]: Analyzing trace with hash 961717556, now seen corresponding path program 1 times [2019-11-20 00:03:09,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 00:03:09,196 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [448950365] [2019-11-20 00:03:09,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe320f55-e019-4c7c-bfd4-020a623bcecb/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 00:03:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:03:09,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 00:03:09,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:03:09,408 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 00:03:09,408 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 00:03:09,415 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:03:09,416 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 00:03:09,416 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 00:03:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:03:09,472 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 00:03:09,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:03:09,851 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [448950365] [2019-11-20 00:03:09,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:03:09,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-20 00:03:09,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77555957] [2019-11-20 00:03:09,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 00:03:09,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 00:03:09,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 00:03:09,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-20 00:03:09,853 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand 10 states. [2019-11-20 00:03:10,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:03:10,683 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2019-11-20 00:03:10,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 00:03:10,684 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-11-20 00:03:10,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:03:10,686 INFO L225 Difference]: With dead ends: 107 [2019-11-20 00:03:10,686 INFO L226 Difference]: Without dead ends: 107 [2019-11-20 00:03:10,686 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-20 00:03:10,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-11-20 00:03:10,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 102. [2019-11-20 00:03:10,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-11-20 00:03:10,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 108 transitions. [2019-11-20 00:03:10,694 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 108 transitions. Word has length 19 [2019-11-20 00:03:10,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:03:10,694 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 108 transitions. [2019-11-20 00:03:10,695 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 00:03:10,695 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 108 transitions. [2019-11-20 00:03:10,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-20 00:03:10,696 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:03:10,696 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] [2019-11-20 00:03:10,896 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 00:03:10,897 INFO L410 AbstractCegarLoop]: === Iteration 5 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, sll_insertErr6REQUIRES_VIOLATION, sll_insertErr0REQUIRES_VIOLATION, sll_insertErr1REQUIRES_VIOLATION, sll_insertErr7REQUIRES_VIOLATION, sll_insertErr5REQUIRES_VIOLATION, sll_insertErr9REQUIRES_VIOLATION, sll_insertErr4REQUIRES_VIOLATION, sll_insertErr2REQUIRES_VIOLATION, sll_insertErr8REQUIRES_VIOLATION, sll_insertErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 00:03:10,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:03:10,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1713431774, now seen corresponding path program 1 times [2019-11-20 00:03:10,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 00:03:10,897 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [259383993] [2019-11-20 00:03:10,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe320f55-e019-4c7c-bfd4-020a623bcecb/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 00:03:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:03:11,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 00:03:11,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:03:11,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:03:11,153 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 00:03:11,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:03:11,213 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [259383993] [2019-11-20 00:03:11,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:03:11,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-11-20 00:03:11,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698627484] [2019-11-20 00:03:11,214 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 00:03:11,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 00:03:11,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 00:03:11,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-20 00:03:11,215 INFO L87 Difference]: Start difference. First operand 102 states and 108 transitions. Second operand 7 states. [2019-11-20 00:03:11,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:03:11,297 INFO L93 Difference]: Finished difference Result 111 states and 118 transitions. [2019-11-20 00:03:11,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 00:03:11,301 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2019-11-20 00:03:11,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:03:11,303 INFO L225 Difference]: With dead ends: 111 [2019-11-20 00:03:11,303 INFO L226 Difference]: Without dead ends: 108 [2019-11-20 00:03:11,303 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 [2019-11-20 00:03:11,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2019-11-20 00:03:11,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 103. [2019-11-20 00:03:11,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-11-20 00:03:11,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2019-11-20 00:03:11,314 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 25 [2019-11-20 00:03:11,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:03:11,314 INFO L462 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2019-11-20 00:03:11,315 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 00:03:11,315 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2019-11-20 00:03:11,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-20 00:03:11,316 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:03:11,316 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] [2019-11-20 00:03:11,523 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 00:03:11,523 INFO L410 AbstractCegarLoop]: === Iteration 6 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, sll_insertErr6REQUIRES_VIOLATION, sll_insertErr0REQUIRES_VIOLATION, sll_insertErr1REQUIRES_VIOLATION, sll_insertErr7REQUIRES_VIOLATION, sll_insertErr5REQUIRES_VIOLATION, sll_insertErr9REQUIRES_VIOLATION, sll_insertErr4REQUIRES_VIOLATION, sll_insertErr2REQUIRES_VIOLATION, sll_insertErr8REQUIRES_VIOLATION, sll_insertErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 00:03:11,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:03:11,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1251171077, now seen corresponding path program 1 times [2019-11-20 00:03:11,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 00:03:11,524 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [55085353] [2019-11-20 00:03:11,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe320f55-e019-4c7c-bfd4-020a623bcecb/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 00:03:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:03:11,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 00:03:11,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:03:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:03:11,784 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 00:03:11,915 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-20 00:03:11,915 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [55085353] [2019-11-20 00:03:11,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:03:11,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-11-20 00:03:11,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575298334] [2019-11-20 00:03:11,916 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 00:03:11,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 00:03:11,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 00:03:11,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-20 00:03:11,917 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand 9 states. [2019-11-20 00:03:12,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:03:12,073 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2019-11-20 00:03:12,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 00:03:12,079 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2019-11-20 00:03:12,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:03:12,080 INFO L225 Difference]: With dead ends: 117 [2019-11-20 00:03:12,080 INFO L226 Difference]: Without dead ends: 114 [2019-11-20 00:03:12,081 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 [2019-11-20 00:03:12,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-11-20 00:03:12,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2019-11-20 00:03:12,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-11-20 00:03:12,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 116 transitions. [2019-11-20 00:03:12,091 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 116 transitions. Word has length 38 [2019-11-20 00:03:12,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:03:12,092 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 116 transitions. [2019-11-20 00:03:12,092 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 00:03:12,092 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 116 transitions. [2019-11-20 00:03:12,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-20 00:03:12,096 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:03:12,097 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] [2019-11-20 00:03:12,298 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 00:03:12,299 INFO L410 AbstractCegarLoop]: === Iteration 7 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, sll_insertErr6REQUIRES_VIOLATION, sll_insertErr0REQUIRES_VIOLATION, sll_insertErr1REQUIRES_VIOLATION, sll_insertErr7REQUIRES_VIOLATION, sll_insertErr5REQUIRES_VIOLATION, sll_insertErr9REQUIRES_VIOLATION, sll_insertErr4REQUIRES_VIOLATION, sll_insertErr2REQUIRES_VIOLATION, sll_insertErr8REQUIRES_VIOLATION, sll_insertErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 00:03:12,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:03:12,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1394236478, now seen corresponding path program 2 times [2019-11-20 00:03:12,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 00:03:12,300 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [48646553] [2019-11-20 00:03:12,300 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe320f55-e019-4c7c-bfd4-020a623bcecb/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 00:03:12,591 ERROR L271 FreeRefinementEngine]: Caught known exception: Array theory solver does not yet support write-chains connecting two different constant arrays [2019-11-20 00:03:12,591 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163434669] [2019-11-20 00:03:12,592 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe320f55-e019-4c7c-bfd4-020a623bcecb/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 [2019-11-20 00:03:12,859 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 00:03:12,860 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:03:12,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-20 00:03:12,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:03:12,875 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 00:03:12,875 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 00:03:12,877 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:03:12,877 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 00:03:12,878 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 00:03:13,010 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 00:03:13,084 INFO L343 Elim1Store]: treesize reduction 27, result has 57.1 percent of original size [2019-11-20 00:03:13,084 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 44 [2019-11-20 00:03:13,085 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 00:03:13,120 INFO L567 ElimStorePlain]: treesize reduction 17, result has 54.1 percent of original size [2019-11-20 00:03:13,121 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 00:03:13,121 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:20 [2019-11-20 00:03:13,310 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 00:03:13,354 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:03:13,354 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 47 [2019-11-20 00:03:13,355 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 00:03:13,403 INFO L567 ElimStorePlain]: treesize reduction 28, result has 41.7 percent of original size [2019-11-20 00:03:13,404 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 00:03:13,404 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:20 [2019-11-20 00:03:13,458 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-20 00:03:13,458 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 00:03:34,484 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:03:34,484 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Alternating quantifiers not yet supported at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-20 00:03:34,488 INFO L168 Benchmark]: Toolchain (without parser) took 30123.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 197.7 MB). Free memory was 944.8 MB in the beginning and 1.0 GB in the end (delta: -101.1 MB). Peak memory consumption was 96.6 MB. Max. memory is 11.5 GB. [2019-11-20 00:03:34,488 INFO L168 Benchmark]: CDTParser took 0.70 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:03:34,489 INFO L168 Benchmark]: CACSL2BoogieTranslator took 596.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -186.2 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2019-11-20 00:03:34,489 INFO L168 Benchmark]: Boogie Preprocessor took 83.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:03:34,490 INFO L168 Benchmark]: RCFGBuilder took 1140.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 70.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 11.5 GB. [2019-11-20 00:03:34,490 INFO L168 Benchmark]: TraceAbstraction took 28297.19 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 38.8 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 14.4 MB). Peak memory consumption was 53.2 MB. Max. memory is 11.5 GB. [2019-11-20 00:03:34,493 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 596.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -186.2 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 83.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1140.03 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: 70.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 28297.19 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 38.8 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 14.4 MB). Peak memory consumption was 53.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Alternating quantifiers not yet supported: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...