./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/sll2c_prepend_equal.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_179b2891-995d-41a8-a399-de8494b68949/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_179b2891-995d-41a8-a399-de8494b68949/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_179b2891-995d-41a8-a399-de8494b68949/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_179b2891-995d-41a8-a399-de8494b68949/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2c_prepend_equal.i -s /tmp/vcloud-vcloud-master/worker/run_dir_179b2891-995d-41a8-a399-de8494b68949/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_179b2891-995d-41a8-a399-de8494b68949/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 052353e0eb8597d9bdf886ce67e33d52b41bcb80 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-19 23:07:44,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 23:07:44,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 23:07:44,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 23:07:44,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 23:07:44,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 23:07:44,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 23:07:44,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 23:07:44,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 23:07:44,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 23:07:44,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 23:07:44,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 23:07:44,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 23:07:44,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 23:07:44,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 23:07:44,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 23:07:44,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 23:07:44,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 23:07:45,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 23:07:45,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 23:07:45,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 23:07:45,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 23:07:45,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 23:07:45,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 23:07:45,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 23:07:45,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 23:07:45,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 23:07:45,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 23:07:45,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 23:07:45,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 23:07:45,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 23:07:45,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 23:07:45,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 23:07:45,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 23:07:45,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 23:07:45,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 23:07:45,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 23:07:45,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 23:07:45,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 23:07:45,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 23:07:45,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 23:07:45,023 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_179b2891-995d-41a8-a399-de8494b68949/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-19 23:07:45,046 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 23:07:45,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 23:07:45,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 23:07:45,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 23:07:45,047 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 23:07:45,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 23:07:45,048 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 23:07:45,048 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 23:07:45,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 23:07:45,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 23:07:45,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 23:07:45,049 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-19 23:07:45,049 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-19 23:07:45,049 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-19 23:07:45,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 23:07:45,049 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-19 23:07:45,049 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-19 23:07:45,050 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 23:07:45,050 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 23:07:45,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 23:07:45,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 23:07:45,050 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 23:07:45,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 23:07:45,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 23:07:45,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 23:07:45,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 23:07:45,051 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-19 23:07:45,051 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-19 23:07:45,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-19 23:07:45,052 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_179b2891-995d-41a8-a399-de8494b68949/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 -> 052353e0eb8597d9bdf886ce67e33d52b41bcb80 [2019-11-19 23:07:45,192 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 23:07:45,201 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 23:07:45,204 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 23:07:45,205 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 23:07:45,205 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 23:07:45,206 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_179b2891-995d-41a8-a399-de8494b68949/bin/uautomizer/../../sv-benchmarks/c/list-simple/sll2c_prepend_equal.i [2019-11-19 23:07:45,266 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_179b2891-995d-41a8-a399-de8494b68949/bin/uautomizer/data/3864b9734/0108a02e6db74b16b11a928af7d89b6e/FLAG02a93459f [2019-11-19 23:07:45,686 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 23:07:45,686 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_179b2891-995d-41a8-a399-de8494b68949/sv-benchmarks/c/list-simple/sll2c_prepend_equal.i [2019-11-19 23:07:45,698 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_179b2891-995d-41a8-a399-de8494b68949/bin/uautomizer/data/3864b9734/0108a02e6db74b16b11a928af7d89b6e/FLAG02a93459f [2019-11-19 23:07:45,707 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_179b2891-995d-41a8-a399-de8494b68949/bin/uautomizer/data/3864b9734/0108a02e6db74b16b11a928af7d89b6e [2019-11-19 23:07:45,709 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 23:07:45,710 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-19 23:07:45,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 23:07:45,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 23:07:45,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 23:07:45,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:07:45" (1/1) ... [2019-11-19 23:07:45,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7651225d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:45, skipping insertion in model container [2019-11-19 23:07:45,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:07:45" (1/1) ... [2019-11-19 23:07:45,724 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 23:07:45,760 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 23:07:46,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:07:46,166 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 23:07:46,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:07:46,290 INFO L192 MainTranslator]: Completed translation [2019-11-19 23:07:46,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:46 WrapperNode [2019-11-19 23:07:46,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 23:07:46,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 23:07:46,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 23:07:46,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 23:07:46,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:46" (1/1) ... [2019-11-19 23:07:46,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:46" (1/1) ... [2019-11-19 23:07:46,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:46" (1/1) ... [2019-11-19 23:07:46,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:46" (1/1) ... [2019-11-19 23:07:46,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:46" (1/1) ... [2019-11-19 23:07:46,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:46" (1/1) ... [2019-11-19 23:07:46,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:46" (1/1) ... [2019-11-19 23:07:46,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 23:07:46,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 23:07:46,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 23:07:46,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 23:07:46,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179b2891-995d-41a8-a399-de8494b68949/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 23:07:46,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-19 23:07:46,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 23:07:46,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-19 23:07:46,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-19 23:07:46,427 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-19 23:07:46,427 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-19 23:07:46,427 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-11-19 23:07:46,427 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2019-11-19 23:07:46,427 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_prepend [2019-11-19 23:07:46,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-19 23:07:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-19 23:07:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-19 23:07:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-19 23:07:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-19 23:07:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-19 23:07:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-19 23:07:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-19 23:07:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-19 23:07:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-19 23:07:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-19 23:07:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-19 23:07:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-19 23:07:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-19 23:07:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-19 23:07:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-19 23:07:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-19 23:07:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-19 23:07:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-19 23:07:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-19 23:07:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-19 23:07:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-19 23:07:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-19 23:07:46,432 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-19 23:07:46,432 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-19 23:07:46,432 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-19 23:07:46,432 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-19 23:07:46,432 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-19 23:07:46,432 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-19 23:07:46,432 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-19 23:07:46,433 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-19 23:07:46,433 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-19 23:07:46,433 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-19 23:07:46,433 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-19 23:07:46,433 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-19 23:07:46,433 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-19 23:07:46,433 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-19 23:07:46,434 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-19 23:07:46,434 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-19 23:07:46,434 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-19 23:07:46,434 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-19 23:07:46,434 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-19 23:07:46,434 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-19 23:07:46,434 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-19 23:07:46,434 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-19 23:07:46,435 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-19 23:07:46,435 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-19 23:07:46,435 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-19 23:07:46,435 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-19 23:07:46,435 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-19 23:07:46,435 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-19 23:07:46,435 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-19 23:07:46,436 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-19 23:07:46,436 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-19 23:07:46,436 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-19 23:07:46,436 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-19 23:07:46,436 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-19 23:07:46,436 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-19 23:07:46,436 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-19 23:07:46,436 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-19 23:07:46,437 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-19 23:07:46,437 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-19 23:07:46,437 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-19 23:07:46,437 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-19 23:07:46,437 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-19 23:07:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-19 23:07:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-19 23:07:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-19 23:07:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-19 23:07:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-19 23:07:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-19 23:07:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-19 23:07:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-19 23:07:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-19 23:07:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-19 23:07:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-19 23:07:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-19 23:07:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-19 23:07:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-19 23:07:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-19 23:07:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-19 23:07:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-19 23:07:46,441 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-19 23:07:46,441 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-19 23:07:46,441 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-19 23:07:46,441 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-19 23:07:46,441 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-19 23:07:46,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-19 23:07:46,442 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-19 23:07:46,442 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-19 23:07:46,442 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-19 23:07:46,442 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-19 23:07:46,442 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-19 23:07:46,442 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-19 23:07:46,443 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-19 23:07:46,443 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-19 23:07:46,443 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-19 23:07:46,443 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-19 23:07:46,443 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-19 23:07:46,443 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-19 23:07:46,444 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-19 23:07:46,444 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-19 23:07:46,444 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-19 23:07:46,444 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-19 23:07:46,444 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-19 23:07:46,444 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-19 23:07:46,445 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-19 23:07:46,445 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-19 23:07:46,445 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-19 23:07:46,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-19 23:07:46,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-19 23:07:46,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-19 23:07:46,446 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-11-19 23:07:46,446 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2019-11-19 23:07:46,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-19 23:07:46,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 23:07:46,446 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_prepend [2019-11-19 23:07:46,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-19 23:07:46,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 23:07:46,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-19 23:07:46,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-19 23:07:46,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-19 23:07:46,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 23:07:46,695 INFO L689 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-19 23:07:47,293 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 23:07:47,293 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-19 23:07:47,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:07:47 BoogieIcfgContainer [2019-11-19 23:07:47,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 23:07:47,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 23:07:47,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 23:07:47,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 23:07:47,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:07:45" (1/3) ... [2019-11-19 23:07:47,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4883beba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:07:47, skipping insertion in model container [2019-11-19 23:07:47,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:46" (2/3) ... [2019-11-19 23:07:47,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4883beba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:07:47, skipping insertion in model container [2019-11-19 23:07:47,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:07:47" (3/3) ... [2019-11-19 23:07:47,301 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_prepend_equal.i [2019-11-19 23:07:47,309 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 23:07:47,315 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 51 error locations. [2019-11-19 23:07:47,325 INFO L249 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2019-11-19 23:07:47,342 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 23:07:47,342 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-19 23:07:47,342 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 23:07:47,345 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 23:07:47,345 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 23:07:47,346 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 23:07:47,346 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 23:07:47,346 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 23:07:47,376 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states. [2019-11-19 23:07:47,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-19 23:07:47,386 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:07:47,387 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:07:47,387 INFO L410 AbstractCegarLoop]: === Iteration 1 === [sll_circular_prependErr5REQUIRES_VIOLATION, sll_circular_prependErr16REQUIRES_VIOLATION, sll_circular_prependErr6REQUIRES_VIOLATION, sll_circular_prependErr7REQUIRES_VIOLATION, sll_circular_prependErr17REQUIRES_VIOLATION, sll_circular_prependErr2REQUIRES_VIOLATION, sll_circular_prependErr3REQUIRES_VIOLATION, sll_circular_prependErr13REQUIRES_VIOLATION, sll_circular_prependErr15REQUIRES_VIOLATION, sll_circular_prependErr14REQUIRES_VIOLATION, sll_circular_prependErr4REQUIRES_VIOLATION, sll_circular_prependErr11REQUIRES_VIOLATION, sll_circular_prependErr10REQUIRES_VIOLATION, sll_circular_prependErr0REQUIRES_VIOLATION, sll_circular_prependErr21REQUIRES_VIOLATION, sll_circular_prependErr1REQUIRES_VIOLATION, sll_circular_prependErr12REQUIRES_VIOLATION, sll_circular_prependErr8REQUIRES_VIOLATION, sll_circular_prependErr19REQUIRES_VIOLATION, sll_circular_prependErr18REQUIRES_VIOLATION, sll_circular_prependErr20REQUIRES_VIOLATION, sll_circular_prependErr9REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-19 23:07:47,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:47,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1692667775, now seen corresponding path program 1 times [2019-11-19 23:07:47,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:07:47,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1665940216] [2019-11-19 23:07:47,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179b2891-995d-41a8-a399-de8494b68949/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:07:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:47,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-19 23:07:47,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:07:47,705 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-19 23:07:47,706 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:07:47,711 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:07:47,711 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:07:47,711 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-19 23:07:47,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:07:47,719 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:07:47,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:07:47,737 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1665940216] [2019-11-19 23:07:47,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:07:47,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-19 23:07:47,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827809165] [2019-11-19 23:07:47,745 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 23:07:47,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:07:47,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 23:07:47,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:07:47,761 INFO L87 Difference]: Start difference. First operand 135 states. Second operand 3 states. [2019-11-19 23:07:48,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:07:48,040 INFO L93 Difference]: Finished difference Result 133 states and 142 transitions. [2019-11-19 23:07:48,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:07:48,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-11-19 23:07:48,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:07:48,055 INFO L225 Difference]: With dead ends: 133 [2019-11-19 23:07:48,056 INFO L226 Difference]: Without dead ends: 126 [2019-11-19 23:07:48,057 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:07:48,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-11-19 23:07:48,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2019-11-19 23:07:48,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-11-19 23:07:48,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 133 transitions. [2019-11-19 23:07:48,124 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 133 transitions. Word has length 12 [2019-11-19 23:07:48,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:07:48,125 INFO L462 AbstractCegarLoop]: Abstraction has 126 states and 133 transitions. [2019-11-19 23:07:48,125 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 23:07:48,125 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 133 transitions. [2019-11-19 23:07:48,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-19 23:07:48,125 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:07:48,126 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:07:48,331 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:07:48,339 INFO L410 AbstractCegarLoop]: === Iteration 2 === [sll_circular_prependErr5REQUIRES_VIOLATION, sll_circular_prependErr16REQUIRES_VIOLATION, sll_circular_prependErr6REQUIRES_VIOLATION, sll_circular_prependErr7REQUIRES_VIOLATION, sll_circular_prependErr17REQUIRES_VIOLATION, sll_circular_prependErr2REQUIRES_VIOLATION, sll_circular_prependErr3REQUIRES_VIOLATION, sll_circular_prependErr13REQUIRES_VIOLATION, sll_circular_prependErr15REQUIRES_VIOLATION, sll_circular_prependErr14REQUIRES_VIOLATION, sll_circular_prependErr4REQUIRES_VIOLATION, sll_circular_prependErr11REQUIRES_VIOLATION, sll_circular_prependErr10REQUIRES_VIOLATION, sll_circular_prependErr0REQUIRES_VIOLATION, sll_circular_prependErr21REQUIRES_VIOLATION, sll_circular_prependErr1REQUIRES_VIOLATION, sll_circular_prependErr12REQUIRES_VIOLATION, sll_circular_prependErr8REQUIRES_VIOLATION, sll_circular_prependErr19REQUIRES_VIOLATION, sll_circular_prependErr18REQUIRES_VIOLATION, sll_circular_prependErr20REQUIRES_VIOLATION, sll_circular_prependErr9REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-19 23:07:48,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:48,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1692667776, now seen corresponding path program 1 times [2019-11-19 23:07:48,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:07:48,340 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [732082809] [2019-11-19 23:07:48,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179b2891-995d-41a8-a399-de8494b68949/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:07:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:48,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 23:07:48,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:07:48,563 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-19 23:07:48,563 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:07:48,570 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:07:48,570 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:07:48,571 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-19 23:07:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:07:48,582 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:07:48,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:07:48,624 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [732082809] [2019-11-19 23:07:48,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:07:48,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-19 23:07:48,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560877803] [2019-11-19 23:07:48,626 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 23:07:48,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:07:48,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 23:07:48,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 23:07:48,627 INFO L87 Difference]: Start difference. First operand 126 states and 133 transitions. Second operand 4 states. [2019-11-19 23:07:49,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:07:49,160 INFO L93 Difference]: Finished difference Result 124 states and 131 transitions. [2019-11-19 23:07:49,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:07:49,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-19 23:07:49,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:07:49,163 INFO L225 Difference]: With dead ends: 124 [2019-11-19 23:07:49,163 INFO L226 Difference]: Without dead ends: 124 [2019-11-19 23:07:49,163 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 23:07:49,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2019-11-19 23:07:49,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2019-11-19 23:07:49,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-11-19 23:07:49,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 131 transitions. [2019-11-19 23:07:49,175 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 131 transitions. Word has length 12 [2019-11-19 23:07:49,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:07:49,176 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 131 transitions. [2019-11-19 23:07:49,176 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 23:07:49,176 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 131 transitions. [2019-11-19 23:07:49,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-19 23:07:49,177 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:07:49,177 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:07:49,392 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:07:49,393 INFO L410 AbstractCegarLoop]: === Iteration 3 === [sll_circular_prependErr5REQUIRES_VIOLATION, sll_circular_prependErr16REQUIRES_VIOLATION, sll_circular_prependErr6REQUIRES_VIOLATION, sll_circular_prependErr7REQUIRES_VIOLATION, sll_circular_prependErr17REQUIRES_VIOLATION, sll_circular_prependErr2REQUIRES_VIOLATION, sll_circular_prependErr3REQUIRES_VIOLATION, sll_circular_prependErr13REQUIRES_VIOLATION, sll_circular_prependErr15REQUIRES_VIOLATION, sll_circular_prependErr14REQUIRES_VIOLATION, sll_circular_prependErr4REQUIRES_VIOLATION, sll_circular_prependErr11REQUIRES_VIOLATION, sll_circular_prependErr10REQUIRES_VIOLATION, sll_circular_prependErr0REQUIRES_VIOLATION, sll_circular_prependErr21REQUIRES_VIOLATION, sll_circular_prependErr1REQUIRES_VIOLATION, sll_circular_prependErr12REQUIRES_VIOLATION, sll_circular_prependErr8REQUIRES_VIOLATION, sll_circular_prependErr19REQUIRES_VIOLATION, sll_circular_prependErr18REQUIRES_VIOLATION, sll_circular_prependErr20REQUIRES_VIOLATION, sll_circular_prependErr9REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-19 23:07:49,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:49,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1118751876, now seen corresponding path program 1 times [2019-11-19 23:07:49,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:07:49,394 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1767447898] [2019-11-19 23:07:49,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179b2891-995d-41a8-a399-de8494b68949/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:07:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:49,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:07:49,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:07:49,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:07:49,629 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:07:49,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:07:49,677 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1767447898] [2019-11-19 23:07:49,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:07:49,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-19 23:07:49,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64096475] [2019-11-19 23:07:49,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-19 23:07:49,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:07:49,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-19 23:07:49,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-19 23:07:49,679 INFO L87 Difference]: Start difference. First operand 124 states and 131 transitions. Second operand 8 states. [2019-11-19 23:07:49,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:07:49,772 INFO L93 Difference]: Finished difference Result 131 states and 139 transitions. [2019-11-19 23:07:49,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 23:07:49,788 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-11-19 23:07:49,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:07:49,793 INFO L225 Difference]: With dead ends: 131 [2019-11-19 23:07:49,793 INFO L226 Difference]: Without dead ends: 131 [2019-11-19 23:07:49,794 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-11-19 23:07:49,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2019-11-19 23:07:49,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 125. [2019-11-19 23:07:49,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2019-11-19 23:07:49,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 132 transitions. [2019-11-19 23:07:49,809 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 132 transitions. Word has length 19 [2019-11-19 23:07:49,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:07:49,809 INFO L462 AbstractCegarLoop]: Abstraction has 125 states and 132 transitions. [2019-11-19 23:07:49,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-19 23:07:49,809 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 132 transitions. [2019-11-19 23:07:49,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-19 23:07:49,810 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:07:49,811 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:07:50,014 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:07:50,014 INFO L410 AbstractCegarLoop]: === Iteration 4 === [sll_circular_prependErr5REQUIRES_VIOLATION, sll_circular_prependErr16REQUIRES_VIOLATION, sll_circular_prependErr6REQUIRES_VIOLATION, sll_circular_prependErr7REQUIRES_VIOLATION, sll_circular_prependErr17REQUIRES_VIOLATION, sll_circular_prependErr2REQUIRES_VIOLATION, sll_circular_prependErr3REQUIRES_VIOLATION, sll_circular_prependErr13REQUIRES_VIOLATION, sll_circular_prependErr15REQUIRES_VIOLATION, sll_circular_prependErr14REQUIRES_VIOLATION, sll_circular_prependErr4REQUIRES_VIOLATION, sll_circular_prependErr11REQUIRES_VIOLATION, sll_circular_prependErr10REQUIRES_VIOLATION, sll_circular_prependErr0REQUIRES_VIOLATION, sll_circular_prependErr21REQUIRES_VIOLATION, sll_circular_prependErr1REQUIRES_VIOLATION, sll_circular_prependErr12REQUIRES_VIOLATION, sll_circular_prependErr8REQUIRES_VIOLATION, sll_circular_prependErr19REQUIRES_VIOLATION, sll_circular_prependErr18REQUIRES_VIOLATION, sll_circular_prependErr20REQUIRES_VIOLATION, sll_circular_prependErr9REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-19 23:07:50,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:50,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1508199616, now seen corresponding path program 1 times [2019-11-19 23:07:50,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:07:50,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1037613404] [2019-11-19 23:07:50,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179b2891-995d-41a8-a399-de8494b68949/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:07:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:50,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 23:07:50,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:07:50,255 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-19 23:07:50,256 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:07:50,258 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:07:50,258 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:07:50,258 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-19 23:07:50,290 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 23:07:50,291 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:07:50,364 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 23:07:50,365 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1037613404] [2019-11-19 23:07:50,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:07:50,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-19 23:07:50,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361216560] [2019-11-19 23:07:50,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 23:07:50,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:07:50,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 23:07:50,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-19 23:07:50,366 INFO L87 Difference]: Start difference. First operand 125 states and 132 transitions. Second operand 6 states. [2019-11-19 23:07:50,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:07:50,792 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions. [2019-11-19 23:07:50,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 23:07:50,793 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2019-11-19 23:07:50,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:07:50,796 INFO L225 Difference]: With dead ends: 125 [2019-11-19 23:07:50,796 INFO L226 Difference]: Without dead ends: 125 [2019-11-19 23:07:50,796 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-19 23:07:50,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-11-19 23:07:50,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2019-11-19 23:07:50,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-11-19 23:07:50,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 131 transitions. [2019-11-19 23:07:50,807 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 131 transitions. Word has length 28 [2019-11-19 23:07:50,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:07:50,807 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 131 transitions. [2019-11-19 23:07:50,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 23:07:50,808 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 131 transitions. [2019-11-19 23:07:50,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-19 23:07:50,809 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:07:50,809 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:07:51,012 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:07:51,014 INFO L410 AbstractCegarLoop]: === Iteration 5 === [sll_circular_prependErr5REQUIRES_VIOLATION, sll_circular_prependErr16REQUIRES_VIOLATION, sll_circular_prependErr6REQUIRES_VIOLATION, sll_circular_prependErr7REQUIRES_VIOLATION, sll_circular_prependErr17REQUIRES_VIOLATION, sll_circular_prependErr2REQUIRES_VIOLATION, sll_circular_prependErr3REQUIRES_VIOLATION, sll_circular_prependErr13REQUIRES_VIOLATION, sll_circular_prependErr15REQUIRES_VIOLATION, sll_circular_prependErr14REQUIRES_VIOLATION, sll_circular_prependErr4REQUIRES_VIOLATION, sll_circular_prependErr11REQUIRES_VIOLATION, sll_circular_prependErr10REQUIRES_VIOLATION, sll_circular_prependErr0REQUIRES_VIOLATION, sll_circular_prependErr21REQUIRES_VIOLATION, sll_circular_prependErr1REQUIRES_VIOLATION, sll_circular_prependErr12REQUIRES_VIOLATION, sll_circular_prependErr8REQUIRES_VIOLATION, sll_circular_prependErr19REQUIRES_VIOLATION, sll_circular_prependErr18REQUIRES_VIOLATION, sll_circular_prependErr20REQUIRES_VIOLATION, sll_circular_prependErr9REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-19 23:07:51,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:51,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1508199615, now seen corresponding path program 1 times [2019-11-19 23:07:51,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:07:51,015 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1474537627] [2019-11-19 23:07:51,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179b2891-995d-41a8-a399-de8494b68949/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:07:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:51,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-19 23:07:51,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:07:51,266 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-19 23:07:51,266 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:07:51,279 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:07:51,280 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:07:51,280 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-19 23:07:51,351 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 23:07:51,351 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:07:51,656 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 23:07:51,657 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1474537627] [2019-11-19 23:07:51,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:07:51,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-19 23:07:51,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520428633] [2019-11-19 23:07:51,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-19 23:07:51,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:07:51,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-19 23:07:51,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-19 23:07:51,658 INFO L87 Difference]: Start difference. First operand 124 states and 131 transitions. Second operand 10 states. [2019-11-19 23:07:52,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:07:52,514 INFO L93 Difference]: Finished difference Result 124 states and 132 transitions. [2019-11-19 23:07:52,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 23:07:52,524 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2019-11-19 23:07:52,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:07:52,525 INFO L225 Difference]: With dead ends: 124 [2019-11-19 23:07:52,526 INFO L226 Difference]: Without dead ends: 124 [2019-11-19 23:07:52,526 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-19 23:07:52,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2019-11-19 23:07:52,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2019-11-19 23:07:52,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2019-11-19 23:07:52,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 130 transitions. [2019-11-19 23:07:52,536 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 130 transitions. Word has length 28 [2019-11-19 23:07:52,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:07:52,536 INFO L462 AbstractCegarLoop]: Abstraction has 123 states and 130 transitions. [2019-11-19 23:07:52,536 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-19 23:07:52,537 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 130 transitions. [2019-11-19 23:07:52,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-19 23:07:52,538 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:07:52,538 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:07:52,740 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:07:52,741 INFO L410 AbstractCegarLoop]: === Iteration 6 === [sll_circular_prependErr5REQUIRES_VIOLATION, sll_circular_prependErr16REQUIRES_VIOLATION, sll_circular_prependErr6REQUIRES_VIOLATION, sll_circular_prependErr7REQUIRES_VIOLATION, sll_circular_prependErr17REQUIRES_VIOLATION, sll_circular_prependErr2REQUIRES_VIOLATION, sll_circular_prependErr3REQUIRES_VIOLATION, sll_circular_prependErr13REQUIRES_VIOLATION, sll_circular_prependErr15REQUIRES_VIOLATION, sll_circular_prependErr14REQUIRES_VIOLATION, sll_circular_prependErr4REQUIRES_VIOLATION, sll_circular_prependErr11REQUIRES_VIOLATION, sll_circular_prependErr10REQUIRES_VIOLATION, sll_circular_prependErr0REQUIRES_VIOLATION, sll_circular_prependErr21REQUIRES_VIOLATION, sll_circular_prependErr1REQUIRES_VIOLATION, sll_circular_prependErr12REQUIRES_VIOLATION, sll_circular_prependErr8REQUIRES_VIOLATION, sll_circular_prependErr19REQUIRES_VIOLATION, sll_circular_prependErr18REQUIRES_VIOLATION, sll_circular_prependErr20REQUIRES_VIOLATION, sll_circular_prependErr9REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-19 23:07:52,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:52,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1121775758, now seen corresponding path program 1 times [2019-11-19 23:07:52,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:07:52,742 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1360107745] [2019-11-19 23:07:52,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179b2891-995d-41a8-a399-de8494b68949/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:07:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:52,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-19 23:07:52,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:07:52,947 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-19 23:07:52,947 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:07:52,949 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:07:52,949 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:07:52,949 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-19 23:07:53,029 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:07:53,030 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2019-11-19 23:07:53,031 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:07:53,051 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-19 23:07:53,052 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:07:53,052 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2019-11-19 23:07:53,063 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 23:07:53,063 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:07:53,208 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 23:07:53,208 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1360107745] [2019-11-19 23:07:53,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 23:07:53,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-11-19 23:07:53,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911581113] [2019-11-19 23:07:53,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-19 23:07:53,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:07:53,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-19 23:07:53,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-19 23:07:53,210 INFO L87 Difference]: Start difference. First operand 123 states and 130 transitions. Second operand 9 states. [2019-11-19 23:08:14,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:08:14,093 INFO L93 Difference]: Finished difference Result 138 states and 149 transitions. [2019-11-19 23:08:14,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-19 23:08:14,093 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2019-11-19 23:08:14,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:08:14,095 INFO L225 Difference]: With dead ends: 138 [2019-11-19 23:08:14,095 INFO L226 Difference]: Without dead ends: 138 [2019-11-19 23:08:14,095 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-11-19 23:08:14,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2019-11-19 23:08:14,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 122. [2019-11-19 23:08:14,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2019-11-19 23:08:14,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 129 transitions. [2019-11-19 23:08:14,103 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 129 transitions. Word has length 31 [2019-11-19 23:08:14,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:08:14,103 INFO L462 AbstractCegarLoop]: Abstraction has 122 states and 129 transitions. [2019-11-19 23:08:14,103 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-19 23:08:14,103 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 129 transitions. [2019-11-19 23:08:14,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-19 23:08:14,104 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:08:14,104 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:08:14,307 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:08:14,308 INFO L410 AbstractCegarLoop]: === Iteration 7 === [sll_circular_prependErr5REQUIRES_VIOLATION, sll_circular_prependErr16REQUIRES_VIOLATION, sll_circular_prependErr6REQUIRES_VIOLATION, sll_circular_prependErr7REQUIRES_VIOLATION, sll_circular_prependErr17REQUIRES_VIOLATION, sll_circular_prependErr2REQUIRES_VIOLATION, sll_circular_prependErr3REQUIRES_VIOLATION, sll_circular_prependErr13REQUIRES_VIOLATION, sll_circular_prependErr15REQUIRES_VIOLATION, sll_circular_prependErr14REQUIRES_VIOLATION, sll_circular_prependErr4REQUIRES_VIOLATION, sll_circular_prependErr11REQUIRES_VIOLATION, sll_circular_prependErr10REQUIRES_VIOLATION, sll_circular_prependErr0REQUIRES_VIOLATION, sll_circular_prependErr21REQUIRES_VIOLATION, sll_circular_prependErr1REQUIRES_VIOLATION, sll_circular_prependErr12REQUIRES_VIOLATION, sll_circular_prependErr8REQUIRES_VIOLATION, sll_circular_prependErr19REQUIRES_VIOLATION, sll_circular_prependErr18REQUIRES_VIOLATION, sll_circular_prependErr20REQUIRES_VIOLATION, sll_circular_prependErr9REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-19 23:08:14,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:08:14,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1121775757, now seen corresponding path program 1 times [2019-11-19 23:08:14,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:08:14,309 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1419289774] [2019-11-19 23:08:14,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179b2891-995d-41a8-a399-de8494b68949/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:08:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:08:14,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-19 23:08:14,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:08:14,541 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-19 23:08:14,542 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:14,548 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:14,551 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-19 23:08:14,551 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:14,557 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:14,557 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:08:14,557 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-19 23:08:14,675 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:14,675 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2019-11-19 23:08:14,676 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:14,687 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:14,691 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2019-11-19 23:08:14,691 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:14,699 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:14,700 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:14,700 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:27, output treesize:20 [2019-11-19 23:08:14,742 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:08:14,743 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:08:14,843 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-19 23:08:15,020 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-19 23:08:15,020 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:15,021 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:15,023 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:15,031 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:15,031 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:15,034 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:15,036 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:15,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:20,071 WARN L191 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2019-11-19 23:08:20,088 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:20,935 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2019-11-19 23:08:21,495 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:08:21,495 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1419289774] [2019-11-19 23:08:21,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 23:08:21,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2019-11-19 23:08:21,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154201908] [2019-11-19 23:08:21,496 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-19 23:08:21,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:08:21,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-19 23:08:21,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=201, Unknown=1, NotChecked=0, Total=240 [2019-11-19 23:08:21,497 INFO L87 Difference]: Start difference. First operand 122 states and 129 transitions. Second operand 16 states. [2019-11-19 23:08:48,486 WARN L191 SmtUtils]: Spent 10.15 s on a formula simplification that was a NOOP. DAG size: 51 [2019-11-19 23:09:05,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:09:05,201 INFO L93 Difference]: Finished difference Result 141 states and 150 transitions. [2019-11-19 23:09:05,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-19 23:09:05,211 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 31 [2019-11-19 23:09:05,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:09:05,213 INFO L225 Difference]: With dead ends: 141 [2019-11-19 23:09:05,213 INFO L226 Difference]: Without dead ends: 141 [2019-11-19 23:09:05,213 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 33.3s TimeCoverageRelationStatistics Valid=80, Invalid=376, Unknown=6, NotChecked=0, Total=462 [2019-11-19 23:09:05,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-11-19 23:09:05,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 121. [2019-11-19 23:09:05,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-11-19 23:09:05,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 128 transitions. [2019-11-19 23:09:05,228 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 128 transitions. Word has length 31 [2019-11-19 23:09:05,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:09:05,229 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 128 transitions. [2019-11-19 23:09:05,229 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-19 23:09:05,229 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 128 transitions. [2019-11-19 23:09:05,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-19 23:09:05,231 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:09:05,232 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:09:05,432 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:09:05,433 INFO L410 AbstractCegarLoop]: === Iteration 8 === [sll_circular_prependErr5REQUIRES_VIOLATION, sll_circular_prependErr16REQUIRES_VIOLATION, sll_circular_prependErr6REQUIRES_VIOLATION, sll_circular_prependErr7REQUIRES_VIOLATION, sll_circular_prependErr17REQUIRES_VIOLATION, sll_circular_prependErr2REQUIRES_VIOLATION, sll_circular_prependErr3REQUIRES_VIOLATION, sll_circular_prependErr13REQUIRES_VIOLATION, sll_circular_prependErr15REQUIRES_VIOLATION, sll_circular_prependErr14REQUIRES_VIOLATION, sll_circular_prependErr4REQUIRES_VIOLATION, sll_circular_prependErr11REQUIRES_VIOLATION, sll_circular_prependErr10REQUIRES_VIOLATION, sll_circular_prependErr0REQUIRES_VIOLATION, sll_circular_prependErr21REQUIRES_VIOLATION, sll_circular_prependErr1REQUIRES_VIOLATION, sll_circular_prependErr12REQUIRES_VIOLATION, sll_circular_prependErr8REQUIRES_VIOLATION, sll_circular_prependErr19REQUIRES_VIOLATION, sll_circular_prependErr18REQUIRES_VIOLATION, sll_circular_prependErr20REQUIRES_VIOLATION, sll_circular_prependErr9REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr2REQUIRES_VIOLATION, sll_circular_destroyErr3REQUIRES_VIOLATION, sll_circular_destroyErr1REQUIRES_VIOLATION, sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE, sll_circular_destroyErr0REQUIRES_VIOLATION, sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-19 23:09:05,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:09:05,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1086588600, now seen corresponding path program 1 times [2019-11-19 23:09:05,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:09:05,434 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [879468133] [2019-11-19 23:09:05,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179b2891-995d-41a8-a399-de8494b68949/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:09:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:09:05,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-19 23:09:05,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:09:05,778 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-19 23:09:05,778 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:09:05,780 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:09:05,780 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:09:05,780 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-19 23:09:05,980 INFO L343 Elim1Store]: treesize reduction 27, result has 57.1 percent of original size [2019-11-19 23:09:05,981 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 49 [2019-11-19 23:09:05,981 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:09:06,014 INFO L567 ElimStorePlain]: treesize reduction 17, result has 54.1 percent of original size [2019-11-19 23:09:06,015 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-19 23:09:06,015 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:20 [2019-11-19 23:09:06,123 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:09:06,124 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 50 [2019-11-19 23:09:06,124 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:09:06,151 INFO L567 ElimStorePlain]: treesize reduction 28, result has 41.7 percent of original size [2019-11-19 23:09:06,152 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-19 23:09:06,152 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:20 [2019-11-19 23:09:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-19 23:09:06,193 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:09:18,809 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:09:18,810 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Alternating quantifiers not yet supported at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-19 23:09:18,813 INFO L168 Benchmark]: Toolchain (without parser) took 93103.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.1 MB). Free memory was 940.7 MB in the beginning and 997.5 MB in the end (delta: -56.7 MB). Peak memory consumption was 129.4 MB. Max. memory is 11.5 GB. [2019-11-19 23:09:18,813 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:09:18,814 INFO L168 Benchmark]: CACSL2BoogieTranslator took 580.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -188.0 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2019-11-19 23:09:18,814 INFO L168 Benchmark]: Boogie Preprocessor took 82.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:09:18,815 INFO L168 Benchmark]: RCFGBuilder took 920.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 70.9 MB). Peak memory consumption was 70.9 MB. Max. memory is 11.5 GB. [2019-11-19 23:09:18,815 INFO L168 Benchmark]: TraceAbstraction took 91516.64 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 34.6 MB). Free memory was 1.1 GB in the beginning and 997.5 MB in the end (delta: 60.4 MB). Peak memory consumption was 95.0 MB. Max. memory is 11.5 GB. [2019-11-19 23:09:18,817 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 580.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -188.0 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 82.37 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 920.05 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: 70.9 MB). Peak memory consumption was 70.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 91516.64 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 34.6 MB). Free memory was 1.1 GB in the beginning and 997.5 MB in the end (delta: 60.4 MB). Peak memory consumption was 95.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Alternating quantifiers not yet supported: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...